Generate tests
Signed-off-by: Rick Waldron <waldron.rick@gmail.com>
diff --git a/test/language/statements/for-await-of/dstr-const-ary-init-iter-close.js b/test/language/statements/for-await-of/dstr-const-ary-init-iter-close.js
new file mode 100644
index 0000000..0cdcd7e
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-init-iter-close.js
@@ -0,0 +1,74 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-init-iter-close.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Iterator is closed when not exhausted by pattern evaluation (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator,
+ result).
+ [...]
+
+---*/
+var doneCallCount = 0;
+var iter = {};
+iter[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return { value: null, done: false };
+ },
+ return: function() {
+ doneCallCount += 1;
+ return {};
+ }
+ };
+};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [x] of [iter]) {
+ assert.sameValue(doneCallCount, 1);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-init-iter-no-close.js b/test/language/statements/for-await-of/dstr-const-ary-init-iter-no-close.js
new file mode 100644
index 0000000..0e022a7
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-init-iter-no-close.js
@@ -0,0 +1,74 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-init-iter-no-close.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Iterator is not closed when exhausted by pattern evaluation (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator,
+ result).
+ [...]
+
+---*/
+var doneCallCount = 0;
+var iter = {};
+iter[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return { value: null, done: true };
+ },
+ return: function() {
+ doneCallCount += 1;
+ return {};
+ }
+ };
+};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [x] of [iter]) {
+ assert.sameValue(doneCallCount, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-name-iter-val.js b/test/language/statements/for-await-of/dstr-const-ary-name-iter-val.js
new file mode 100644
index 0000000..c3e9393
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-name-iter-val.js
@@ -0,0 +1,73 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-name-iter-val.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: SingleNameBinding with normal value iteration (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ [...]
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set
+ iteratorRecord.[[done]] to true.
+ iii. ReturnIfAbrupt(v).
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [x, y, z] of [[1, 2, 3]]) {
+ assert.sameValue(x, 1);
+ assert.sameValue(y, 2);
+ assert.sameValue(z, 3);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-elem-init.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-elem-init.js
new file mode 100644
index 0000000..38ba661
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-elem-init.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-elem-init.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: BindingElement with array binding pattern and initializer is used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [[x, y, z] = [4, 5, 6]] of [[]]) {
+ assert.sameValue(x, 4);
+ assert.sameValue(y, 5);
+ assert.sameValue(z, 6);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-elem-iter.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-elem-iter.js
new file mode 100644
index 0000000..502dc0e
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-elem-iter.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-elem-iter.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: BindingElement with array binding pattern and initializer is not used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ [...]
+ e. Else,
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [[x, y, z] = [4, 5, 6]] of [[[7, 8, 9]]]) {
+ assert.sameValue(x, 7);
+ assert.sameValue(y, 8);
+ assert.sameValue(z, 9);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-elision-init.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-elision-init.js
new file mode 100644
index 0000000..95e9725
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-elision-init.js
@@ -0,0 +1,72 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-elision-init.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: BindingElement with array binding pattern and initializer is used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+---*/
+var first = 0;
+var second = 0;
+function* g() {
+ first += 1;
+ yield;
+ second += 1;
+};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [[,] = g()] of [[]]) {
+ assert.sameValue(first, 1);
+ assert.sameValue(second, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-elision-iter.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-elision-iter.js
new file mode 100644
index 0000000..5917a84
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-elision-iter.js
@@ -0,0 +1,69 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-elision-iter.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: BindingElement with array binding pattern and initializer is not used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ [...]
+ e. Else,
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+---*/
+var callCount = 0;
+function* g() {
+ callCount += 1;
+};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [[,] = g()] of [[[]]]) {
+ assert.sameValue(callCount, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-empty-init.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-empty-init.js
new file mode 100644
index 0000000..a4f8814
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-empty-init.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-empty-init.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: BindingElement with array binding pattern and initializer is used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+var initCount = 0;
+var iterCount = 0;
+var iter = function*() { iterCount += 1; }();
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [[] = function() { initCount += 1; return iter; }()] of [[]]) {
+ assert.sameValue(initCount, 1);
+ assert.sameValue(iterCount, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-empty-iter.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-empty-iter.js
new file mode 100644
index 0000000..7ac1759
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-empty-iter.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-empty-iter.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: BindingElement with array binding pattern and initializer is not used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ [...]
+ e. Else,
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+var initCount = 0;
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [[] = function() { initCount += 1; }()] of [[[23]]]) {
+ assert.sameValue(initCount, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-rest-init.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-rest-init.js
new file mode 100644
index 0000000..158dc4b
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-rest-init.js
@@ -0,0 +1,69 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-rest-init.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: BindingElement with array binding pattern and initializer is used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+var values = [2, 1, 3];
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [[...x] = values] of [[]]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x[0], 2);
+ assert.sameValue(x[1], 1);
+ assert.sameValue(x[2], 3);
+ assert.sameValue(x.length, 3);
+ assert.notSameValue(x, values);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-rest-iter.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-rest-iter.js
new file mode 100644
index 0000000..eaa606d
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-ary-rest-iter.js
@@ -0,0 +1,72 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-rest-iter.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: BindingElement with array binding pattern and initializer is not used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ [...]
+ e. Else,
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+var values = [2, 1, 3];
+var initCount = 0;
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [[...x] = function() { initCount += 1; }()] of [[values]]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x[0], 2);
+ assert.sameValue(x[1], 1);
+ assert.sameValue(x[2], 3);
+ assert.sameValue(x.length, 3);
+ assert.notSameValue(x, values);
+ assert.sameValue(initCount, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-exhausted.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-exhausted.js
new file mode 100644
index 0000000..13d7a9c
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-exhausted.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-exhausted.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Destructuring initializer with an exhausted iterator (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [x = 23] of [[]]) {
+ assert.sameValue(x, 23);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-fn-name-arrow.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-fn-name-arrow.js
new file mode 100644
index 0000000..acdfe55
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-fn-name-arrow.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-arrow.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: SingleNameBinding does assign name to arrow functions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [arrow = () => {}] of [[]]) {
+ assert.sameValue(arrow.name, 'arrow');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-fn-name-class.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-fn-name-class.js
new file mode 100644
index 0000000..cf6a3e9
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-fn-name-class.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-class.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: SingleNameBinding assigns `name` to "anonymous" classes (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [cls = class {}, xCls = class X {}, xCls2 = class { static name() {} }] of [[]]) {
+ assert.sameValue(cls.name, 'cls');
+ assert.notSameValue(xCls.name, 'xCls');
+ assert.notSameValue(xCls2.name, 'xCls2');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-fn-name-cover.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-fn-name-cover.js
new file mode 100644
index 0000000..723dbda
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-fn-name-cover.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-cover.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: SingleNameBinding does assign name to "anonymous" functions "through" cover grammar (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [cover = (function () {}), xCover = (0, function() {})] of [[]]) {
+ assert.sameValue(cover.name, 'cover');
+ assert.notSameValue(xCover.name, 'xCover');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-fn-name-fn.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-fn-name-fn.js
new file mode 100644
index 0000000..b5bc52d
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-fn-name-fn.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-fn.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: SingleNameBinding assigns name to "anonymous" functions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [fn = function () {}, xFn = function x() {}] of [[]]) {
+ assert.sameValue(fn.name, 'fn');
+ assert.notSameValue(xFn.name, 'xFn');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-fn-name-gen.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-fn-name-gen.js
new file mode 100644
index 0000000..0589c02
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-fn-name-gen.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-gen.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: SingleNameBinding assigns name to "anonymous" generator functions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [gen = function* () {}, xGen = function* x() {}] of [[]]) {
+ assert.sameValue(gen.name, 'gen');
+ assert.notSameValue(xGen.name, 'xGen');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-hole.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-hole.js
new file mode 100644
index 0000000..ef022dc
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-hole.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-hole.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Destructuring initializer with a "hole" (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ SingleNameBinding : BindingIdentifier Initializeropt
+ [...] 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v). 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [x = 23] of [[,]]) {
+ assert.sameValue(x, 23);
+ // another statement
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-skipped.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-skipped.js
new file mode 100644
index 0000000..1663684
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-skipped.js
@@ -0,0 +1,69 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-skipped.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Destructuring initializer is not evaluated when value is not `undefined` (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+var initCount = 0;
+function counter() {
+ initCount += 1;
+}
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [w = counter(), x = counter(), y = counter(), z = counter()] of [[null, 0, false, '']]) {
+ assert.sameValue(w, null);
+ assert.sameValue(x, 0);
+ assert.sameValue(y, false);
+ assert.sameValue(z, '');
+ assert.sameValue(initCount, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-undef.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-undef.js
new file mode 100644
index 0000000..94a40e8
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-init-undef.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-undef.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Destructuring initializer with an undefined value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [x = 23] of [[undefined]]) {
+ assert.sameValue(x, 23);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-iter-complete.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-iter-complete.js
new file mode 100644
index 0000000..3f7bbbb
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-iter-complete.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-complete.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: SingleNameBinding when value iteration completes (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ [...]
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [x] of [[]]) {
+ assert.sameValue(x, undefined);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-iter-done.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-iter-done.js
new file mode 100644
index 0000000..3ccfb53
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-iter-done.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-done.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: SingleNameBinding when value iteration was completed previously (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ [...]
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [_, x] of [[]]) {
+ assert.sameValue(x, undefined);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-iter-val.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-iter-val.js
new file mode 100644
index 0000000..5ee3f98
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-id-iter-val.js
@@ -0,0 +1,73 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-val.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: SingleNameBinding when value iteration was completed previously (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ [...]
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set
+ iteratorRecord.[[done]] to true.
+ iii. ReturnIfAbrupt(v).
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [x, y, z] of [[1, 2, 3]]) {
+ assert.sameValue(x, 1);
+ assert.sameValue(y, 2);
+ assert.sameValue(z, 3);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-obj-id-init.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-obj-id-init.js
new file mode 100644
index 0000000..1748831
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-obj-id-init.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-id-init.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: BindingElement with object binding pattern and initializer is used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [{ x, y, z } = { x: 44, y: 55, z: 66 }] of [[]]) {
+ assert.sameValue(x, 44);
+ assert.sameValue(y, 55);
+ assert.sameValue(z, 66);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-obj-id.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-obj-id.js
new file mode 100644
index 0000000..ed6c4c5
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-obj-id.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-id.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: BindingElement with object binding pattern and initializer is not used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [{ x, y, z } = { x: 44, y: 55, z: 66 }] of [[{ x: 11, y: 22, z: 33 }]]) {
+ assert.sameValue(x, 11);
+ assert.sameValue(y, 22);
+ assert.sameValue(z, 33);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-obj-prop-id-init.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-obj-prop-id-init.js
new file mode 100644
index 0000000..33543c4
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-obj-prop-id-init.js
@@ -0,0 +1,75 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-prop-id-init.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: BindingElement with object binding pattern and initializer is used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [{ u: v, w: x, y: z } = { u: 444, w: 555, y: 666 }] of [[]]) {
+ assert.sameValue(v, 444);
+ assert.sameValue(x, 555);
+ assert.sameValue(z, 666);
+
+ assert.throws(ReferenceError, function() {
+ u;
+ });
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+ assert.throws(ReferenceError, function() {
+ y;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-obj-prop-id.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-obj-prop-id.js
new file mode 100644
index 0000000..f0b2612
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elem-obj-prop-id.js
@@ -0,0 +1,75 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-prop-id.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: BindingElement with object binding pattern and initializer is not used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [{ u: v, w: x, y: z } = { u: 444, w: 555, y: 666 }] of [[{ u: 777, w: 888, y: 999 }]]) {
+ assert.sameValue(v, 777);
+ assert.sameValue(x, 888);
+ assert.sameValue(z, 999);
+
+ assert.throws(ReferenceError, function() {
+ u;
+ });
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+ assert.throws(ReferenceError, function() {
+ y;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elision-exhausted.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elision-exhausted.js
new file mode 100644
index 0000000..090dd4c
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elision-exhausted.js
@@ -0,0 +1,70 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elision-exhausted.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Elision accepts exhausted iterator (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ 2. Return NormalCompletion(empty).
+
+---*/
+var iter = function*() {}();
+iter.next();
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [,] of [iter]) {
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-elision.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elision.js
new file mode 100644
index 0000000..b88a7fa
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-elision.js
@@ -0,0 +1,79 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elision.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Elision advances iterator (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ 2. Return NormalCompletion(empty).
+
+---*/
+var first = 0;
+var second = 0;
+function* g() {
+ first += 1;
+ yield;
+ second += 1;
+};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [,] of [g()]) {
+ assert.sameValue(first, 1);
+ assert.sameValue(second, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-empty.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-empty.js
new file mode 100644
index 0000000..1a28eed
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-empty.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-empty.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: No iteration occurs for an "empty" array binding pattern (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ ]
+
+ 1. Return NormalCompletion(empty).
+
+---*/
+var iterations = 0;
+var iter = function*() {
+ iterations += 1;
+}();
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [] of [iter]) {
+ assert.sameValue(iterations, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-ary-elem.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-ary-elem.js
new file mode 100644
index 0000000..c0d24ba
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-ary-elem.js
@@ -0,0 +1,86 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-ary-elem.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Rest element containing an array BindingElementList pattern (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ [...]
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set
+ iteratorRecord.[[done]] to true.
+ iii. ReturnIfAbrupt(v).
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [...[x, y, z]] of [[3, 4, 5]]) {
+ assert.sameValue(x, 3);
+ assert.sameValue(y, 4);
+ assert.sameValue(z, 5);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-ary-elision.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-ary-elision.js
new file mode 100644
index 0000000..fc9f361
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-ary-elision.js
@@ -0,0 +1,92 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-ary-elision.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Rest element containing an elision (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ 2. Return NormalCompletion(empty).
+
+---*/
+var first = 0;
+var second = 0;
+function* g() {
+ first += 1;
+ yield;
+ second += 1;
+};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [...[,]] of [g()]) {
+ assert.sameValue(first, 1);
+ assert.sameValue(second, 1);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-ary-empty.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-ary-empty.js
new file mode 100644
index 0000000..b266f8c
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-ary-empty.js
@@ -0,0 +1,75 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-ary-empty.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Rest element containing an "empty" array pattern (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ ]
+
+ 1. Return NormalCompletion(empty).
+
+---*/
+var iterations = 0;
+var iter = function*() {
+ iterations += 1;
+}();
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [...[]] of [iter]) {
+ assert.sameValue(iterations, 1);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-ary-rest.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-ary-rest.js
new file mode 100644
index 0000000..a268c26
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-ary-rest.js
@@ -0,0 +1,71 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-ary-rest.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Rest element containing a rest element (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+---*/
+var values = [1, 2, 3];
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [...[...x]] of [values]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x.length, 3);
+ assert.sameValue(x[0], 1);
+ assert.sameValue(x[1], 2);
+ assert.sameValue(x[2], 3);
+ assert.notSameValue(x, values);
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-id-elision.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-id-elision.js
new file mode 100644
index 0000000..5c642a1
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-id-elision.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-elision.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Rest element following elision elements (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ ArrayBindingPattern : [ Elisionopt BindingRestElement ]
+ 1. If Elision is present, then
+ a. Let status be the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with
+ iteratorRecord as the argument.
+ b. ReturnIfAbrupt(status).
+ 2. Return the result of performing IteratorBindingInitialization for
+ BindingRestElement with iteratorRecord and environment as arguments.
+---*/
+var values = [1, 2, 3, 4, 5];
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [ , , ...x] of [values]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x.length, 3);
+ assert.sameValue(x[0], 3);
+ assert.sameValue(x[1], 4);
+ assert.sameValue(x[2], 5);
+ assert.notSameValue(x, values);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-id-exhausted.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-id-exhausted.js
new file mode 100644
index 0000000..c61d284
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-id-exhausted.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-exhausted.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: RestElement applied to an exhausted iterator (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. If environment is undefined, return PutValue(lhs, A).
+ ii. Return InitializeReferencedBinding(lhs, A).
+
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [, , ...x] of [[1, 2]]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x.length, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-id.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-id.js
new file mode 100644
index 0000000..2b7a894
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-id.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Lone rest element (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ [...] 3. Let A be ArrayCreate(0). [...] 5. Repeat
+ [...]
+ f. Let status be CreateDataProperty(A, ToString (n), nextValue).
+ [...]
+---*/
+var values = [1, 2, 3];
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [...x] of [values]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x.length, 3);
+ assert.sameValue(x[0], 1);
+ assert.sameValue(x[1], 2);
+ assert.sameValue(x[2], 3);
+ assert.notSameValue(x, values);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-init-ary.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-init-ary.js
new file mode 100644
index 0000000..e576efe
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-init-ary.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-init-ary.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Reset element (nested array pattern) does not support initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+negative:
+ phase: early
+ type: SyntaxError
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [...[ x ] = []] of [[]]) {
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-init-id.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-init-id.js
new file mode 100644
index 0000000..1d9a0d2
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-init-id.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-init-id.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Reset element (identifier) does not support initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+negative:
+ phase: early
+ type: SyntaxError
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [...x = []] of [[]]) {
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-init-obj.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-init-obj.js
new file mode 100644
index 0000000..f22b3fd
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-init-obj.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-init-obj.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Reset element (nested object pattern) does not support initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+negative:
+ phase: early
+ type: SyntaxError
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [...{ x } = []] of [[]]) {
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-not-final-ary.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-not-final-ary.js
new file mode 100644
index 0000000..67a80bb
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-not-final-ary.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-not-final-ary.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Rest element (array binding pattern) may not be followed by any element (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+negative:
+ phase: early
+ type: SyntaxError
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [...[x], y] of [[1, 2, 3]]) {
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-not-final-id.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-not-final-id.js
new file mode 100644
index 0000000..23e2aad
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-not-final-id.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-not-final-id.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Rest element (identifier) may not be followed by any element (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+negative:
+ phase: early
+ type: SyntaxError
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [...x, y] of [[1, 2, 3]]) {
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-not-final-obj.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-not-final-obj.js
new file mode 100644
index 0000000..d8a224f
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-not-final-obj.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-not-final-obj.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Rest element (object binding pattern) may not be followed by any element (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+negative:
+ phase: early
+ type: SyntaxError
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [...{ x }, y] of [[1, 2, 3]]) {
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-obj-id.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-obj-id.js
new file mode 100644
index 0000000..35d5174
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-obj-id.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-obj-id.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Rest element containing an object binding pattern (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [...{ length }] of [[1, 2, 3]]) {
+ assert.sameValue(length, 3);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-obj-prop-id.js b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-obj-prop-id.js
new file mode 100644
index 0000000..9070c78
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-ary-ptrn-rest-obj-prop-id.js
@@ -0,0 +1,72 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-obj-prop-id.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Rest element containing an object binding pattern (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const [...{ 0: v, 1: w, 2: x, 3: y, length: z }] of [[7, 8, 9]]) {
+ assert.sameValue(v, 7);
+ assert.sameValue(w, 8);
+ assert.sameValue(x, 9);
+ assert.sameValue(y, undefined);
+ assert.sameValue(z, 3);
+
+ assert.throws(ReferenceError, function() {
+ length;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-empty.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-empty.js
new file mode 100644
index 0000000..159c097
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-empty.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-empty.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: No property access occurs for an "empty" object binding pattern (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ Runtime Semantics: BindingInitialization
+
+ ObjectBindingPattern : { }
+
+ 1. Return NormalCompletion(empty).
+---*/
+var accessCount = 0;
+var obj = Object.defineProperty({}, 'attr', {
+ get: function() {
+ accessCount += 1;
+ }
+});
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const {} of [obj]) {
+ assert.sameValue(accessCount, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-init-fn-name-arrow.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-init-fn-name-arrow.js
new file mode 100644
index 0000000..3ac3212
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-init-fn-name-arrow.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-arrow.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: SingleNameBinding assigns `name` to arrow functions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const { arrow = () => {} } of [{}]) {
+ assert.sameValue(arrow.name, 'arrow');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-init-fn-name-class.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-init-fn-name-class.js
new file mode 100644
index 0000000..66b8e59
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-init-fn-name-class.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-class.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: SingleNameBinding assigns `name` to "anonymous" classes (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const { cls = class {}, xCls = class X {}, xCls2 = class { static name() {} } } of [{}]) {
+ assert.sameValue(cls.name, 'cls');
+ assert.notSameValue(xCls.name, 'xCls');
+ assert.notSameValue(xCls2.name, 'xCls2');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-init-fn-name-cover.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-init-fn-name-cover.js
new file mode 100644
index 0000000..364d03b
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-init-fn-name-cover.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-cover.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: SingleNameBinding assigns `name` to "anonymous" functions "through" cover grammar (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const { cover = (function () {}), xCover = (0, function() {}) } of [{}]) {
+ assert.sameValue(cover.name, 'cover');
+ assert.notSameValue(xCover.name, 'xCover');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-init-fn-name-fn.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-init-fn-name-fn.js
new file mode 100644
index 0000000..375c243
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-init-fn-name-fn.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-fn.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: SingleNameBinding assigns name to "anonymous" functions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const { fn = function () {}, xFn = function x() {} } of [{}]) {
+ assert.sameValue(fn.name, 'fn');
+ assert.notSameValue(xFn.name, 'xFn');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-init-fn-name-gen.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-init-fn-name-gen.js
new file mode 100644
index 0000000..d30692d
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-init-fn-name-gen.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-gen.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: SingleNameBinding assigns name to "anonymous" generator functions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const { gen = function* () {}, xGen = function* x() {} } of [{}]) {
+ assert.sameValue(gen.name, 'gen');
+ assert.notSameValue(xGen.name, 'xGen');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-init-skipped.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-init-skipped.js
new file mode 100644
index 0000000..33bf584
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-init-skipped.js
@@ -0,0 +1,68 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-skipped.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Destructuring initializer is not evaluated when value is not `undefined` (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ [...]
+---*/
+var initCount = 0;
+function counter() {
+ initCount += 1;
+}
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const { w = counter(), x = counter(), y = counter(), z = counter() } of [{ w: null, x: 0, y: false, z: '' }]) {
+ assert.sameValue(w, null);
+ assert.sameValue(x, 0);
+ assert.sameValue(y, false);
+ assert.sameValue(z, '');
+ assert.sameValue(initCount, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-trailing-comma.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-trailing-comma.js
new file mode 100644
index 0000000..26b8147
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-id-trailing-comma.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-trailing-comma.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Trailing comma is allowed following BindingPropertyList (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+
+ ObjectBindingPattern[Yield] :
+ { }
+ { BindingPropertyList[?Yield] }
+ { BindingPropertyList[?Yield] , }
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const { x, } of [{ x: 23 }]) {
+ assert.sameValue(x, 23);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-ary-init.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-ary-init.js
new file mode 100644
index 0000000..24325bf
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-ary-init.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary-init.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Object binding pattern with "nested" array binding pattern using initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const { w: [x, y, z] = [4, 5, 6] } of [{}]) {
+ assert.sameValue(x, 4);
+ assert.sameValue(y, 5);
+ assert.sameValue(z, 6);
+
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-ary-trailing-comma.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-ary-trailing-comma.js
new file mode 100644
index 0000000..5832e64
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-ary-trailing-comma.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary-trailing-comma.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Trailing comma is allowed following BindingPropertyList (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+
+ ObjectBindingPattern[Yield] :
+ { }
+ { BindingPropertyList[?Yield] }
+ { BindingPropertyList[?Yield] , }
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const { x: [y], } of [{ x: [45] }]) {
+ assert.sameValue(y,45);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-ary.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-ary.js
new file mode 100644
index 0000000..70d919d
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-ary.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Object binding pattern with "nested" array binding pattern not using initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const { w: [x, y, z] = [4, 5, 6] } of [{ w: [7, undefined, ] }]) {
+ assert.sameValue(x, 7);
+ assert.sameValue(y, undefined);
+ assert.sameValue(z, undefined);
+
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-id-init-skipped.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-id-init-skipped.js
new file mode 100644
index 0000000..9ff7cf8
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-id-init-skipped.js
@@ -0,0 +1,80 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init-skipped.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Destructuring initializer is not evaluated when value is not `undefined` (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+---*/
+var initCount = 0;
+function counter() {
+ initCount += 1;
+}
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const { s: t = counter(), u: v = counter(), w: x = counter(), y: z = counter() } of [{ s: null, u: 0, w: false, y: '' }]) {
+ assert.sameValue(t, null);
+ assert.sameValue(v, 0);
+ assert.sameValue(x, false);
+ assert.sameValue(z, '');
+ assert.sameValue(initCount, 0);
+
+ assert.throws(ReferenceError, function() {
+ s;
+ });
+ assert.throws(ReferenceError, function() {
+ u;
+ });
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+ assert.throws(ReferenceError, function() {
+ y;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-id-init.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-id-init.js
new file mode 100644
index 0000000..4d0b610
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-id-init.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Binding as specified via property name, identifier, and initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const { x: y = 33 } of [{ }]) {
+ assert.sameValue(y, 33);
+ assert.throws(ReferenceError, function() {
+ x;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-id-trailing-comma.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-id-trailing-comma.js
new file mode 100644
index 0000000..9f95bac
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-id-trailing-comma.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-trailing-comma.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Trailing comma is allowed following BindingPropertyList (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+
+ ObjectBindingPattern[Yield] :
+ { }
+ { BindingPropertyList[?Yield] }
+ { BindingPropertyList[?Yield] , }
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const { x: y, } of [{ x: 23 }]) {
+ assert.sameValue(y, 23);
+
+ assert.throws(ReferenceError, function() {
+ x;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-id.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-id.js
new file mode 100644
index 0000000..3b0b5b8
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-id.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Binding as specified via property name and identifier (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const { x: y } of [{ x: 23 }]) {
+ assert.sameValue(y, 23);
+ assert.throws(ReferenceError, function() {
+ x;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-obj-init.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-obj-init.js
new file mode 100644
index 0000000..64dd06a
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-obj-init.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj-init.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Object binding pattern with "nested" object binding pattern using initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const { w: { x, y, z } = { x: 4, y: 5, z: 6 } } of [{ w: undefined }]) {
+ assert.sameValue(x, 4);
+ assert.sameValue(y, 5);
+ assert.sameValue(z, 6);
+
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-obj.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-obj.js
new file mode 100644
index 0000000..7ac8672
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-prop-obj.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Object binding pattern with "nested" object binding pattern not using initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const { w: { x, y, z } = { x: 4, y: 5, z: 6 } } of [{ w: { x: undefined, z: 7 } }]) {
+ assert.sameValue(x, undefined);
+ assert.sameValue(y, undefined);
+ assert.sameValue(z, 7);
+
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-rest-getter.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-rest-getter.js
new file mode 100644
index 0000000..a288c61
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-rest-getter.js
@@ -0,0 +1,59 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-getter.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Getter is called when obj is being deconstructed to a rest Object (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [object-rest, destructuring-binding, async-iteration]
+flags: [generated, async]
+includes: [propertyHelper.js]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+---*/
+var count = 0;
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const {...x} of [{ get v() { count++; return 2; } }]) {
+ assert.sameValue(x.v, 2);
+ assert.sameValue(count, 1);
+
+ verifyEnumerable(x, "v");
+ verifyWritable(x, "v");
+ verifyConfigurable(x, "v");
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-rest-nested-obj.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-rest-nested-obj.js
new file mode 100644
index 0000000..9db1fc1
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-rest-nested-obj.js
@@ -0,0 +1,56 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-nested-obj.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: When DestructuringAssignmentTarget is an object literal, it should be parsed parsed as a DestructuringAssignmentPattern and evaluated as a destructuring assignment. (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [object-rest, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+---*/
+var obj = {a: 3, b: 4};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const {a, b, ...{c, e}} of [{a: 1, b: 2, c: 3, d: 4, e: 5}]) {
+ assert.sameValue(a, 1);
+ assert.sameValue(b, 2);
+ assert.sameValue(c, 3);
+ assert.sameValue(e, 5);
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-rest-obj-nested-rest.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-rest-obj-nested-rest.js
new file mode 100644
index 0000000..1618465
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-rest-obj-nested-rest.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-obj-nested-rest.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: When DestructuringAssignmentTarget is an object literal, it should be parsed parsed as a DestructuringAssignmentPattern and evaluated as a destructuring assignment and object rest desconstruction is allowed in that case. (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [object-rest, destructuring-binding, async-iteration]
+flags: [generated, async]
+includes: [propertyHelper.js]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const {a, b, ...{c, ...rest}} of [{a: 1, b: 2, c: 3, d: 4, e: 5}]) {
+ assert.sameValue(a, 1);
+ assert.sameValue(b, 2);
+ assert.sameValue(c, 3);
+
+ assert.sameValue(rest.d, 4);
+ assert.sameValue(rest.e, 5);
+
+ verifyEnumerable(rest, "d");
+ verifyWritable(rest, "d");
+ verifyConfigurable(rest, "d");
+
+ verifyEnumerable(rest, "e");
+ verifyWritable(rest, "e");
+ verifyConfigurable(rest, "e");
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-rest-obj-own-property.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-rest-obj-own-property.js
new file mode 100644
index 0000000..31fd5f8
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-rest-obj-own-property.js
@@ -0,0 +1,57 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-obj-own-property.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Rest object contains just soruce object's own properties (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [object-rest, destructuring-binding, async-iteration]
+flags: [generated, async]
+includes: [propertyHelper.js]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+---*/
+var o = Object.create({ x: 1, y: 2 });
+o.z = 3;
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const { x, ...{y , z} } of [o]) {
+ assert.sameValue(x, 1);
+ assert.sameValue(y, undefined);
+ assert.sameValue(z, 3);
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-rest-skip-non-enumerable.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-rest-skip-non-enumerable.js
new file mode 100644
index 0000000..bee075b
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-rest-skip-non-enumerable.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-skip-non-enumerable.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Rest object doesn't contain non-enumerable properties (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [object-rest, destructuring-binding, async-iteration]
+flags: [generated, async]
+includes: [propertyHelper.js]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+---*/
+var o = {a: 3, b: 4};
+Object.defineProperty(o, "x", { value: 4, enumerable: false });
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const {...rest} of [o]) {
+ assert.sameValue(rest.a, 3);
+ assert.sameValue(rest.b, 4);
+ assert.sameValue(rest.x, undefined);
+
+ verifyEnumerable(rest, "a");
+ verifyWritable(rest, "a");
+ verifyConfigurable(rest, "a");
+
+ verifyEnumerable(rest, "b");
+ verifyWritable(rest, "b");
+ verifyConfigurable(rest, "b");
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-const-obj-ptrn-rest-val-obj.js b/test/language/statements/for-await-of/dstr-const-obj-ptrn-rest-val-obj.js
new file mode 100644
index 0000000..1ddb8d0
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-const-obj-ptrn-rest-val-obj.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-val-obj.case
+// - src/dstr-binding/default/for-await-of-const.template
+/*---
+description: Rest object contains just unextracted data (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [object-rest, destructuring-binding, async-iteration]
+flags: [generated, async]
+includes: [propertyHelper.js]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (const {a, b, ...rest} of [{x: 1, y: 2, a: 5, b: 3}]) {
+ assert.sameValue(rest.x, 1);
+ assert.sameValue(rest.y, 2);
+ assert.sameValue(rest.a, undefined);
+ assert.sameValue(rest.b, undefined);
+
+ verifyEnumerable(rest, "x");
+ verifyWritable(rest, "x");
+ verifyConfigurable(rest, "x");
+
+ verifyEnumerable(rest, "y");
+ verifyWritable(rest, "y");
+ verifyConfigurable(rest, "y");
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
diff --git a/test/language/statements/for-await-of/dstr-let-ary-init-iter-close.js b/test/language/statements/for-await-of/dstr-let-ary-init-iter-close.js
new file mode 100644
index 0000000..d3bc7e6
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-init-iter-close.js
@@ -0,0 +1,74 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-init-iter-close.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Iterator is closed when not exhausted by pattern evaluation (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator,
+ result).
+ [...]
+
+---*/
+var doneCallCount = 0;
+var iter = {};
+iter[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return { value: null, done: false };
+ },
+ return: function() {
+ doneCallCount += 1;
+ return {};
+ }
+ };
+};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [x] of [iter]) {
+ assert.sameValue(doneCallCount, 1);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-init-iter-no-close.js b/test/language/statements/for-await-of/dstr-let-ary-init-iter-no-close.js
new file mode 100644
index 0000000..7800783
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-init-iter-no-close.js
@@ -0,0 +1,74 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-init-iter-no-close.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Iterator is not closed when exhausted by pattern evaluation (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator,
+ result).
+ [...]
+
+---*/
+var doneCallCount = 0;
+var iter = {};
+iter[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return { value: null, done: true };
+ },
+ return: function() {
+ doneCallCount += 1;
+ return {};
+ }
+ };
+};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [x] of [iter]) {
+ assert.sameValue(doneCallCount, 0);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-name-iter-val.js b/test/language/statements/for-await-of/dstr-let-ary-name-iter-val.js
new file mode 100644
index 0000000..29f3d5d
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-name-iter-val.js
@@ -0,0 +1,73 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-name-iter-val.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: SingleNameBinding with normal value iteration (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ [...]
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set
+ iteratorRecord.[[done]] to true.
+ iii. ReturnIfAbrupt(v).
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [x, y, z] of [[1, 2, 3]]) {
+ assert.sameValue(x, 1);
+ assert.sameValue(y, 2);
+ assert.sameValue(z, 3);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-elem-init.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-elem-init.js
new file mode 100644
index 0000000..a796fe5
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-elem-init.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-elem-init.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: BindingElement with array binding pattern and initializer is used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [[x, y, z] = [4, 5, 6]] of [[]]) {
+ assert.sameValue(x, 4);
+ assert.sameValue(y, 5);
+ assert.sameValue(z, 6);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-elem-iter.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-elem-iter.js
new file mode 100644
index 0000000..d909bf2
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-elem-iter.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-elem-iter.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: BindingElement with array binding pattern and initializer is not used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ [...]
+ e. Else,
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [[x, y, z] = [4, 5, 6]] of [[[7, 8, 9]]]) {
+ assert.sameValue(x, 7);
+ assert.sameValue(y, 8);
+ assert.sameValue(z, 9);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-elision-init.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-elision-init.js
new file mode 100644
index 0000000..c59dadf
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-elision-init.js
@@ -0,0 +1,72 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-elision-init.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: BindingElement with array binding pattern and initializer is used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+---*/
+var first = 0;
+var second = 0;
+function* g() {
+ first += 1;
+ yield;
+ second += 1;
+};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [[,] = g()] of [[]]) {
+ assert.sameValue(first, 1);
+ assert.sameValue(second, 0);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-elision-iter.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-elision-iter.js
new file mode 100644
index 0000000..511ea92
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-elision-iter.js
@@ -0,0 +1,69 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-elision-iter.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: BindingElement with array binding pattern and initializer is not used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ [...]
+ e. Else,
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+---*/
+var callCount = 0;
+function* g() {
+ callCount += 1;
+};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [[,] = g()] of [[[]]]) {
+ assert.sameValue(callCount, 0);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-empty-init.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-empty-init.js
new file mode 100644
index 0000000..a9529ac
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-empty-init.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-empty-init.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: BindingElement with array binding pattern and initializer is used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+var initCount = 0;
+var iterCount = 0;
+var iter = function*() { iterCount += 1; }();
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [[] = function() { initCount += 1; return iter; }()] of [[]]) {
+ assert.sameValue(initCount, 1);
+ assert.sameValue(iterCount, 0);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-empty-iter.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-empty-iter.js
new file mode 100644
index 0000000..ff238e9
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-empty-iter.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-empty-iter.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: BindingElement with array binding pattern and initializer is not used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ [...]
+ e. Else,
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+var initCount = 0;
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [[] = function() { initCount += 1; }()] of [[[23]]]) {
+ assert.sameValue(initCount, 0);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-rest-init.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-rest-init.js
new file mode 100644
index 0000000..7fb6991
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-rest-init.js
@@ -0,0 +1,69 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-rest-init.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: BindingElement with array binding pattern and initializer is used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+var values = [2, 1, 3];
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [[...x] = values] of [[]]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x[0], 2);
+ assert.sameValue(x[1], 1);
+ assert.sameValue(x[2], 3);
+ assert.sameValue(x.length, 3);
+ assert.notSameValue(x, values);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-rest-iter.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-rest-iter.js
new file mode 100644
index 0000000..c759223
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-ary-rest-iter.js
@@ -0,0 +1,72 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-rest-iter.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: BindingElement with array binding pattern and initializer is not used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ [...]
+ e. Else,
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+var values = [2, 1, 3];
+var initCount = 0;
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [[...x] = function() { initCount += 1; }()] of [[values]]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x[0], 2);
+ assert.sameValue(x[1], 1);
+ assert.sameValue(x[2], 3);
+ assert.sameValue(x.length, 3);
+ assert.notSameValue(x, values);
+ assert.sameValue(initCount, 0);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-exhausted.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-exhausted.js
new file mode 100644
index 0000000..8c017d3
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-exhausted.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-exhausted.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Destructuring initializer with an exhausted iterator (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [x = 23] of [[]]) {
+ assert.sameValue(x, 23);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-fn-name-arrow.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-fn-name-arrow.js
new file mode 100644
index 0000000..18bbd62
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-fn-name-arrow.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-arrow.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: SingleNameBinding does assign name to arrow functions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [arrow = () => {}] of [[]]) {
+ assert.sameValue(arrow.name, 'arrow');
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-fn-name-class.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-fn-name-class.js
new file mode 100644
index 0000000..587debe
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-fn-name-class.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-class.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: SingleNameBinding assigns `name` to "anonymous" classes (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [cls = class {}, xCls = class X {}, xCls2 = class { static name() {} }] of [[]]) {
+ assert.sameValue(cls.name, 'cls');
+ assert.notSameValue(xCls.name, 'xCls');
+ assert.notSameValue(xCls2.name, 'xCls2');
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-fn-name-cover.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-fn-name-cover.js
new file mode 100644
index 0000000..07fb4a8
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-fn-name-cover.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-cover.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: SingleNameBinding does assign name to "anonymous" functions "through" cover grammar (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [cover = (function () {}), xCover = (0, function() {})] of [[]]) {
+ assert.sameValue(cover.name, 'cover');
+ assert.notSameValue(xCover.name, 'xCover');
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-fn-name-fn.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-fn-name-fn.js
new file mode 100644
index 0000000..f367c0a
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-fn-name-fn.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-fn.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: SingleNameBinding assigns name to "anonymous" functions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [fn = function () {}, xFn = function x() {}] of [[]]) {
+ assert.sameValue(fn.name, 'fn');
+ assert.notSameValue(xFn.name, 'xFn');
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-fn-name-gen.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-fn-name-gen.js
new file mode 100644
index 0000000..e577679
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-fn-name-gen.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-gen.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: SingleNameBinding assigns name to "anonymous" generator functions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [gen = function* () {}, xGen = function* x() {}] of [[]]) {
+ assert.sameValue(gen.name, 'gen');
+ assert.notSameValue(xGen.name, 'xGen');
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-hole.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-hole.js
new file mode 100644
index 0000000..e8dbc85
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-hole.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-hole.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Destructuring initializer with a "hole" (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ SingleNameBinding : BindingIdentifier Initializeropt
+ [...] 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v). 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [x = 23] of [[,]]) {
+ assert.sameValue(x, 23);
+ // another statement
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-skipped.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-skipped.js
new file mode 100644
index 0000000..2294e7e
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-skipped.js
@@ -0,0 +1,69 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-skipped.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Destructuring initializer is not evaluated when value is not `undefined` (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+var initCount = 0;
+function counter() {
+ initCount += 1;
+}
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [w = counter(), x = counter(), y = counter(), z = counter()] of [[null, 0, false, '']]) {
+ assert.sameValue(w, null);
+ assert.sameValue(x, 0);
+ assert.sameValue(y, false);
+ assert.sameValue(z, '');
+ assert.sameValue(initCount, 0);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-undef.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-undef.js
new file mode 100644
index 0000000..f4b17d0
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-init-undef.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-undef.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Destructuring initializer with an undefined value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [x = 23] of [[undefined]]) {
+ assert.sameValue(x, 23);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-iter-complete.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-iter-complete.js
new file mode 100644
index 0000000..7ad43e8
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-iter-complete.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-complete.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: SingleNameBinding when value iteration completes (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ [...]
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [x] of [[]]) {
+ assert.sameValue(x, undefined);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-iter-done.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-iter-done.js
new file mode 100644
index 0000000..4ed38c0
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-iter-done.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-done.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: SingleNameBinding when value iteration was completed previously (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ [...]
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [_, x] of [[]]) {
+ assert.sameValue(x, undefined);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-iter-val.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-iter-val.js
new file mode 100644
index 0000000..be5214f
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-id-iter-val.js
@@ -0,0 +1,73 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-val.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: SingleNameBinding when value iteration was completed previously (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ [...]
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set
+ iteratorRecord.[[done]] to true.
+ iii. ReturnIfAbrupt(v).
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [x, y, z] of [[1, 2, 3]]) {
+ assert.sameValue(x, 1);
+ assert.sameValue(y, 2);
+ assert.sameValue(z, 3);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-obj-id-init.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-obj-id-init.js
new file mode 100644
index 0000000..c6e3b19
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-obj-id-init.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-id-init.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: BindingElement with object binding pattern and initializer is used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [{ x, y, z } = { x: 44, y: 55, z: 66 }] of [[]]) {
+ assert.sameValue(x, 44);
+ assert.sameValue(y, 55);
+ assert.sameValue(z, 66);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-obj-id.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-obj-id.js
new file mode 100644
index 0000000..2c9648b
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-obj-id.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-id.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: BindingElement with object binding pattern and initializer is not used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [{ x, y, z } = { x: 44, y: 55, z: 66 }] of [[{ x: 11, y: 22, z: 33 }]]) {
+ assert.sameValue(x, 11);
+ assert.sameValue(y, 22);
+ assert.sameValue(z, 33);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-obj-prop-id-init.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-obj-prop-id-init.js
new file mode 100644
index 0000000..1a7369d
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-obj-prop-id-init.js
@@ -0,0 +1,75 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-prop-id-init.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: BindingElement with object binding pattern and initializer is used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [{ u: v, w: x, y: z } = { u: 444, w: 555, y: 666 }] of [[]]) {
+ assert.sameValue(v, 444);
+ assert.sameValue(x, 555);
+ assert.sameValue(z, 666);
+
+ assert.throws(ReferenceError, function() {
+ u;
+ });
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+ assert.throws(ReferenceError, function() {
+ y;
+ });
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-obj-prop-id.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-obj-prop-id.js
new file mode 100644
index 0000000..a02dcb8
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elem-obj-prop-id.js
@@ -0,0 +1,75 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-prop-id.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: BindingElement with object binding pattern and initializer is not used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [{ u: v, w: x, y: z } = { u: 444, w: 555, y: 666 }] of [[{ u: 777, w: 888, y: 999 }]]) {
+ assert.sameValue(v, 777);
+ assert.sameValue(x, 888);
+ assert.sameValue(z, 999);
+
+ assert.throws(ReferenceError, function() {
+ u;
+ });
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+ assert.throws(ReferenceError, function() {
+ y;
+ });
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elision-exhausted.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elision-exhausted.js
new file mode 100644
index 0000000..3bb106a
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elision-exhausted.js
@@ -0,0 +1,70 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elision-exhausted.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Elision accepts exhausted iterator (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ 2. Return NormalCompletion(empty).
+
+---*/
+var iter = function*() {}();
+iter.next();
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [,] of [iter]) {
+
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-elision.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elision.js
new file mode 100644
index 0000000..2c762c8
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-elision.js
@@ -0,0 +1,79 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elision.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Elision advances iterator (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ 2. Return NormalCompletion(empty).
+
+---*/
+var first = 0;
+var second = 0;
+function* g() {
+ first += 1;
+ yield;
+ second += 1;
+};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [,] of [g()]) {
+ assert.sameValue(first, 1);
+ assert.sameValue(second, 0);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-empty.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-empty.js
new file mode 100644
index 0000000..db5621f
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-empty.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-empty.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: No iteration occurs for an "empty" array binding pattern (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ ]
+
+ 1. Return NormalCompletion(empty).
+
+---*/
+var iterations = 0;
+var iter = function*() {
+ iterations += 1;
+}();
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [] of [iter]) {
+ assert.sameValue(iterations, 0);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-ary-elem.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-ary-elem.js
new file mode 100644
index 0000000..0b9fe75
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-ary-elem.js
@@ -0,0 +1,86 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-ary-elem.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Rest element containing an array BindingElementList pattern (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ [...]
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set
+ iteratorRecord.[[done]] to true.
+ iii. ReturnIfAbrupt(v).
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [...[x, y, z]] of [[3, 4, 5]]) {
+ assert.sameValue(x, 3);
+ assert.sameValue(y, 4);
+ assert.sameValue(z, 5);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-ary-elision.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-ary-elision.js
new file mode 100644
index 0000000..d83f6ce
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-ary-elision.js
@@ -0,0 +1,92 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-ary-elision.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Rest element containing an elision (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ 2. Return NormalCompletion(empty).
+
+---*/
+var first = 0;
+var second = 0;
+function* g() {
+ first += 1;
+ yield;
+ second += 1;
+};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [...[,]] of [g()]) {
+ assert.sameValue(first, 1);
+ assert.sameValue(second, 1);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-ary-empty.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-ary-empty.js
new file mode 100644
index 0000000..e6c16d7
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-ary-empty.js
@@ -0,0 +1,75 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-ary-empty.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Rest element containing an "empty" array pattern (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ ]
+
+ 1. Return NormalCompletion(empty).
+
+---*/
+var iterations = 0;
+var iter = function*() {
+ iterations += 1;
+}();
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [...[]] of [iter]) {
+ assert.sameValue(iterations, 1);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-ary-rest.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-ary-rest.js
new file mode 100644
index 0000000..1f108ef
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-ary-rest.js
@@ -0,0 +1,71 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-ary-rest.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Rest element containing a rest element (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+---*/
+var values = [1, 2, 3];
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [...[...x]] of [values]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x.length, 3);
+ assert.sameValue(x[0], 1);
+ assert.sameValue(x[1], 2);
+ assert.sameValue(x[2], 3);
+ assert.notSameValue(x, values);
+
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-id-elision.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-id-elision.js
new file mode 100644
index 0000000..a5dbcf4
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-id-elision.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-elision.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Rest element following elision elements (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ ArrayBindingPattern : [ Elisionopt BindingRestElement ]
+ 1. If Elision is present, then
+ a. Let status be the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with
+ iteratorRecord as the argument.
+ b. ReturnIfAbrupt(status).
+ 2. Return the result of performing IteratorBindingInitialization for
+ BindingRestElement with iteratorRecord and environment as arguments.
+---*/
+var values = [1, 2, 3, 4, 5];
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [ , , ...x] of [values]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x.length, 3);
+ assert.sameValue(x[0], 3);
+ assert.sameValue(x[1], 4);
+ assert.sameValue(x[2], 5);
+ assert.notSameValue(x, values);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-id-exhausted.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-id-exhausted.js
new file mode 100644
index 0000000..b079deb
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-id-exhausted.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-exhausted.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: RestElement applied to an exhausted iterator (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. If environment is undefined, return PutValue(lhs, A).
+ ii. Return InitializeReferencedBinding(lhs, A).
+
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [, , ...x] of [[1, 2]]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x.length, 0);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-id.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-id.js
new file mode 100644
index 0000000..a80b553
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-id.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Lone rest element (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ [...] 3. Let A be ArrayCreate(0). [...] 5. Repeat
+ [...]
+ f. Let status be CreateDataProperty(A, ToString (n), nextValue).
+ [...]
+---*/
+var values = [1, 2, 3];
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [...x] of [values]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x.length, 3);
+ assert.sameValue(x[0], 1);
+ assert.sameValue(x[1], 2);
+ assert.sameValue(x[2], 3);
+ assert.notSameValue(x, values);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-init-ary.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-init-ary.js
new file mode 100644
index 0000000..4c55b2a
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-init-ary.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-init-ary.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Reset element (nested array pattern) does not support initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+negative:
+ phase: early
+ type: SyntaxError
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [...[ x ] = []] of [[]]) {
+
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-init-id.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-init-id.js
new file mode 100644
index 0000000..cadd61f
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-init-id.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-init-id.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Reset element (identifier) does not support initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+negative:
+ phase: early
+ type: SyntaxError
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [...x = []] of [[]]) {
+
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-init-obj.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-init-obj.js
new file mode 100644
index 0000000..59778af
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-init-obj.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-init-obj.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Reset element (nested object pattern) does not support initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+negative:
+ phase: early
+ type: SyntaxError
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [...{ x } = []] of [[]]) {
+
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-not-final-ary.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-not-final-ary.js
new file mode 100644
index 0000000..bc8943c
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-not-final-ary.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-not-final-ary.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Rest element (array binding pattern) may not be followed by any element (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+negative:
+ phase: early
+ type: SyntaxError
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [...[x], y] of [[1, 2, 3]]) {
+
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-not-final-id.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-not-final-id.js
new file mode 100644
index 0000000..23e75d3
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-not-final-id.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-not-final-id.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Rest element (identifier) may not be followed by any element (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+negative:
+ phase: early
+ type: SyntaxError
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [...x, y] of [[1, 2, 3]]) {
+
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-not-final-obj.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-not-final-obj.js
new file mode 100644
index 0000000..2a3103c
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-not-final-obj.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-not-final-obj.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Rest element (object binding pattern) may not be followed by any element (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+negative:
+ phase: early
+ type: SyntaxError
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [...{ x }, y] of [[1, 2, 3]]) {
+
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-obj-id.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-obj-id.js
new file mode 100644
index 0000000..d9c4170
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-obj-id.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-obj-id.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Rest element containing an object binding pattern (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [...{ length }] of [[1, 2, 3]]) {
+ assert.sameValue(length, 3);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-obj-prop-id.js b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-obj-prop-id.js
new file mode 100644
index 0000000..989ecd1
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-ary-ptrn-rest-obj-prop-id.js
@@ -0,0 +1,72 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-obj-prop-id.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Rest element containing an object binding pattern (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let [...{ 0: v, 1: w, 2: x, 3: y, length: z }] of [[7, 8, 9]]) {
+ assert.sameValue(v, 7);
+ assert.sameValue(w, 8);
+ assert.sameValue(x, 9);
+ assert.sameValue(y, undefined);
+ assert.sameValue(z, 3);
+
+ assert.throws(ReferenceError, function() {
+ length;
+ });
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-empty.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-empty.js
new file mode 100644
index 0000000..72ba298
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-empty.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-empty.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: No property access occurs for an "empty" object binding pattern (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ Runtime Semantics: BindingInitialization
+
+ ObjectBindingPattern : { }
+
+ 1. Return NormalCompletion(empty).
+---*/
+var accessCount = 0;
+var obj = Object.defineProperty({}, 'attr', {
+ get: function() {
+ accessCount += 1;
+ }
+});
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let {} of [obj]) {
+ assert.sameValue(accessCount, 0);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-init-fn-name-arrow.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-init-fn-name-arrow.js
new file mode 100644
index 0000000..fbd3d2a
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-init-fn-name-arrow.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-arrow.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: SingleNameBinding assigns `name` to arrow functions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let { arrow = () => {} } of [{}]) {
+ assert.sameValue(arrow.name, 'arrow');
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-init-fn-name-class.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-init-fn-name-class.js
new file mode 100644
index 0000000..f453a1e
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-init-fn-name-class.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-class.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: SingleNameBinding assigns `name` to "anonymous" classes (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let { cls = class {}, xCls = class X {}, xCls2 = class { static name() {} } } of [{}]) {
+ assert.sameValue(cls.name, 'cls');
+ assert.notSameValue(xCls.name, 'xCls');
+ assert.notSameValue(xCls2.name, 'xCls2');
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-init-fn-name-cover.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-init-fn-name-cover.js
new file mode 100644
index 0000000..65153fc
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-init-fn-name-cover.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-cover.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: SingleNameBinding assigns `name` to "anonymous" functions "through" cover grammar (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let { cover = (function () {}), xCover = (0, function() {}) } of [{}]) {
+ assert.sameValue(cover.name, 'cover');
+ assert.notSameValue(xCover.name, 'xCover');
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-init-fn-name-fn.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-init-fn-name-fn.js
new file mode 100644
index 0000000..4f1d903
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-init-fn-name-fn.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-fn.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: SingleNameBinding assigns name to "anonymous" functions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let { fn = function () {}, xFn = function x() {} } of [{}]) {
+ assert.sameValue(fn.name, 'fn');
+ assert.notSameValue(xFn.name, 'xFn');
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-init-fn-name-gen.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-init-fn-name-gen.js
new file mode 100644
index 0000000..0a9a6a3
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-init-fn-name-gen.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-gen.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: SingleNameBinding assigns name to "anonymous" generator functions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let { gen = function* () {}, xGen = function* x() {} } of [{}]) {
+ assert.sameValue(gen.name, 'gen');
+ assert.notSameValue(xGen.name, 'xGen');
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-init-skipped.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-init-skipped.js
new file mode 100644
index 0000000..9666799
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-init-skipped.js
@@ -0,0 +1,68 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-skipped.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Destructuring initializer is not evaluated when value is not `undefined` (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ [...]
+---*/
+var initCount = 0;
+function counter() {
+ initCount += 1;
+}
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let { w = counter(), x = counter(), y = counter(), z = counter() } of [{ w: null, x: 0, y: false, z: '' }]) {
+ assert.sameValue(w, null);
+ assert.sameValue(x, 0);
+ assert.sameValue(y, false);
+ assert.sameValue(z, '');
+ assert.sameValue(initCount, 0);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-trailing-comma.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-trailing-comma.js
new file mode 100644
index 0000000..4dc8138
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-id-trailing-comma.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-trailing-comma.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Trailing comma is allowed following BindingPropertyList (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+
+ ObjectBindingPattern[Yield] :
+ { }
+ { BindingPropertyList[?Yield] }
+ { BindingPropertyList[?Yield] , }
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let { x, } of [{ x: 23 }]) {
+ assert.sameValue(x, 23);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-ary-init.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-ary-init.js
new file mode 100644
index 0000000..1a157b4
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-ary-init.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary-init.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Object binding pattern with "nested" array binding pattern using initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let { w: [x, y, z] = [4, 5, 6] } of [{}]) {
+ assert.sameValue(x, 4);
+ assert.sameValue(y, 5);
+ assert.sameValue(z, 6);
+
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-ary-trailing-comma.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-ary-trailing-comma.js
new file mode 100644
index 0000000..82111fe
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-ary-trailing-comma.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary-trailing-comma.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Trailing comma is allowed following BindingPropertyList (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+
+ ObjectBindingPattern[Yield] :
+ { }
+ { BindingPropertyList[?Yield] }
+ { BindingPropertyList[?Yield] , }
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let { x: [y], } of [{ x: [45] }]) {
+ assert.sameValue(y,45);
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-ary.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-ary.js
new file mode 100644
index 0000000..978c19d
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-ary.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Object binding pattern with "nested" array binding pattern not using initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let { w: [x, y, z] = [4, 5, 6] } of [{ w: [7, undefined, ] }]) {
+ assert.sameValue(x, 7);
+ assert.sameValue(y, undefined);
+ assert.sameValue(z, undefined);
+
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-id-init-skipped.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-id-init-skipped.js
new file mode 100644
index 0000000..113cf71
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-id-init-skipped.js
@@ -0,0 +1,80 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init-skipped.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Destructuring initializer is not evaluated when value is not `undefined` (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+---*/
+var initCount = 0;
+function counter() {
+ initCount += 1;
+}
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let { s: t = counter(), u: v = counter(), w: x = counter(), y: z = counter() } of [{ s: null, u: 0, w: false, y: '' }]) {
+ assert.sameValue(t, null);
+ assert.sameValue(v, 0);
+ assert.sameValue(x, false);
+ assert.sameValue(z, '');
+ assert.sameValue(initCount, 0);
+
+ assert.throws(ReferenceError, function() {
+ s;
+ });
+ assert.throws(ReferenceError, function() {
+ u;
+ });
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+ assert.throws(ReferenceError, function() {
+ y;
+ });
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-id-init.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-id-init.js
new file mode 100644
index 0000000..b05bbc4
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-id-init.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Binding as specified via property name, identifier, and initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let { x: y = 33 } of [{ }]) {
+ assert.sameValue(y, 33);
+ assert.throws(ReferenceError, function() {
+ x;
+ });
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-id-trailing-comma.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-id-trailing-comma.js
new file mode 100644
index 0000000..5be32da
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-id-trailing-comma.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-trailing-comma.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Trailing comma is allowed following BindingPropertyList (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+
+ ObjectBindingPattern[Yield] :
+ { }
+ { BindingPropertyList[?Yield] }
+ { BindingPropertyList[?Yield] , }
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let { x: y, } of [{ x: 23 }]) {
+ assert.sameValue(y, 23);
+
+ assert.throws(ReferenceError, function() {
+ x;
+ });
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-id.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-id.js
new file mode 100644
index 0000000..50997f5
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-id.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Binding as specified via property name and identifier (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let { x: y } of [{ x: 23 }]) {
+ assert.sameValue(y, 23);
+ assert.throws(ReferenceError, function() {
+ x;
+ });
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-obj-init.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-obj-init.js
new file mode 100644
index 0000000..2f5397c
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-obj-init.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj-init.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Object binding pattern with "nested" object binding pattern using initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let { w: { x, y, z } = { x: 4, y: 5, z: 6 } } of [{ w: undefined }]) {
+ assert.sameValue(x, 4);
+ assert.sameValue(y, 5);
+ assert.sameValue(z, 6);
+
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-obj.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-obj.js
new file mode 100644
index 0000000..46c3e0a
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-prop-obj.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Object binding pattern with "nested" object binding pattern not using initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let { w: { x, y, z } = { x: 4, y: 5, z: 6 } } of [{ w: { x: undefined, z: 7 } }]) {
+ assert.sameValue(x, undefined);
+ assert.sameValue(y, undefined);
+ assert.sameValue(z, 7);
+
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-rest-getter.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-rest-getter.js
new file mode 100644
index 0000000..69fbb9e
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-rest-getter.js
@@ -0,0 +1,59 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-getter.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Getter is called when obj is being deconstructed to a rest Object (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [object-rest, destructuring-binding, async-iteration]
+flags: [generated, async]
+includes: [propertyHelper.js]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+---*/
+var count = 0;
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let {...x} of [{ get v() { count++; return 2; } }]) {
+ assert.sameValue(x.v, 2);
+ assert.sameValue(count, 1);
+
+ verifyEnumerable(x, "v");
+ verifyWritable(x, "v");
+ verifyConfigurable(x, "v");
+
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-rest-nested-obj.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-rest-nested-obj.js
new file mode 100644
index 0000000..d4b0f33
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-rest-nested-obj.js
@@ -0,0 +1,56 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-nested-obj.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: When DestructuringAssignmentTarget is an object literal, it should be parsed parsed as a DestructuringAssignmentPattern and evaluated as a destructuring assignment. (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [object-rest, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+---*/
+var obj = {a: 3, b: 4};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let {a, b, ...{c, e}} of [{a: 1, b: 2, c: 3, d: 4, e: 5}]) {
+ assert.sameValue(a, 1);
+ assert.sameValue(b, 2);
+ assert.sameValue(c, 3);
+ assert.sameValue(e, 5);
+
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-rest-obj-nested-rest.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-rest-obj-nested-rest.js
new file mode 100644
index 0000000..8783dad
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-rest-obj-nested-rest.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-obj-nested-rest.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: When DestructuringAssignmentTarget is an object literal, it should be parsed parsed as a DestructuringAssignmentPattern and evaluated as a destructuring assignment and object rest desconstruction is allowed in that case. (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [object-rest, destructuring-binding, async-iteration]
+flags: [generated, async]
+includes: [propertyHelper.js]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let {a, b, ...{c, ...rest}} of [{a: 1, b: 2, c: 3, d: 4, e: 5}]) {
+ assert.sameValue(a, 1);
+ assert.sameValue(b, 2);
+ assert.sameValue(c, 3);
+
+ assert.sameValue(rest.d, 4);
+ assert.sameValue(rest.e, 5);
+
+ verifyEnumerable(rest, "d");
+ verifyWritable(rest, "d");
+ verifyConfigurable(rest, "d");
+
+ verifyEnumerable(rest, "e");
+ verifyWritable(rest, "e");
+ verifyConfigurable(rest, "e");
+
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-rest-obj-own-property.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-rest-obj-own-property.js
new file mode 100644
index 0000000..0c417b5
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-rest-obj-own-property.js
@@ -0,0 +1,57 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-obj-own-property.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Rest object contains just soruce object's own properties (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [object-rest, destructuring-binding, async-iteration]
+flags: [generated, async]
+includes: [propertyHelper.js]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+---*/
+var o = Object.create({ x: 1, y: 2 });
+o.z = 3;
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let { x, ...{y , z} } of [o]) {
+ assert.sameValue(x, 1);
+ assert.sameValue(y, undefined);
+ assert.sameValue(z, 3);
+
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-rest-skip-non-enumerable.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-rest-skip-non-enumerable.js
new file mode 100644
index 0000000..9083521
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-rest-skip-non-enumerable.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-skip-non-enumerable.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Rest object doesn't contain non-enumerable properties (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [object-rest, destructuring-binding, async-iteration]
+flags: [generated, async]
+includes: [propertyHelper.js]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+---*/
+var o = {a: 3, b: 4};
+Object.defineProperty(o, "x", { value: 4, enumerable: false });
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let {...rest} of [o]) {
+ assert.sameValue(rest.a, 3);
+ assert.sameValue(rest.b, 4);
+ assert.sameValue(rest.x, undefined);
+
+ verifyEnumerable(rest, "a");
+ verifyWritable(rest, "a");
+ verifyConfigurable(rest, "a");
+
+ verifyEnumerable(rest, "b");
+ verifyWritable(rest, "b");
+ verifyConfigurable(rest, "b");
+
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-let-obj-ptrn-rest-val-obj.js b/test/language/statements/for-await-of/dstr-let-obj-ptrn-rest-val-obj.js
new file mode 100644
index 0000000..c418f18
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-let-obj-ptrn-rest-val-obj.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-val-obj.case
+// - src/dstr-binding/default/for-await-of-let.template
+/*---
+description: Rest object contains just unextracted data (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [object-rest, destructuring-binding, async-iteration]
+flags: [generated, async]
+includes: [propertyHelper.js]
+info: |
+ IterationStatement :
+ for await ( ForDeclaration of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
+ lexicalBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ [...]
+ iii. Else,
+ 1. Assert: lhsKind is lexicalBinding.
+ 2. Assert: lhs is a ForDeclaration.
+ 3. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and iterationEnv as arguments.
+ [...]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (let {a, b, ...rest} of [{x: 1, y: 2, a: 5, b: 3}]) {
+ assert.sameValue(rest.x, 1);
+ assert.sameValue(rest.y, 2);
+ assert.sameValue(rest.a, undefined);
+ assert.sameValue(rest.b, undefined);
+
+ verifyEnumerable(rest, "x");
+ verifyWritable(rest, "x");
+ verifyConfigurable(rest, "x");
+
+ verifyEnumerable(rest, "y");
+ verifyWritable(rest, "y");
+ verifyConfigurable(rest, "y");
+
+
+ iterCount += 1;
+ }
+}
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-init-iter-close.js b/test/language/statements/for-await-of/dstr-var-ary-init-iter-close.js
new file mode 100644
index 0000000..83f9d62
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-init-iter-close.js
@@ -0,0 +1,72 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-init-iter-close.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Iterator is closed when not exhausted by pattern evaluation (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator,
+ result).
+ [...]
+
+---*/
+var doneCallCount = 0;
+var iter = {};
+iter[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return { value: null, done: false };
+ },
+ return: function() {
+ doneCallCount += 1;
+ return {};
+ }
+ };
+};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [x] of [iter]) {
+ assert.sameValue(doneCallCount, 1);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-init-iter-no-close.js b/test/language/statements/for-await-of/dstr-var-ary-init-iter-no-close.js
new file mode 100644
index 0000000..2db7ca1
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-init-iter-no-close.js
@@ -0,0 +1,72 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-init-iter-no-close.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Iterator is not closed when exhausted by pattern evaluation (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator,
+ result).
+ [...]
+
+---*/
+var doneCallCount = 0;
+var iter = {};
+iter[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return { value: null, done: true };
+ },
+ return: function() {
+ doneCallCount += 1;
+ return {};
+ }
+ };
+};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [x] of [iter]) {
+ assert.sameValue(doneCallCount, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-name-iter-val.js b/test/language/statements/for-await-of/dstr-var-ary-name-iter-val.js
new file mode 100644
index 0000000..e85f8c7
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-name-iter-val.js
@@ -0,0 +1,71 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-name-iter-val.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: SingleNameBinding with normal value iteration (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ [...]
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set
+ iteratorRecord.[[done]] to true.
+ iii. ReturnIfAbrupt(v).
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [x, y, z] of [[1, 2, 3]]) {
+ assert.sameValue(x, 1);
+ assert.sameValue(y, 2);
+ assert.sameValue(z, 3);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-elem-init.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-elem-init.js
new file mode 100644
index 0000000..1e89a5d
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-elem-init.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-elem-init.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: BindingElement with array binding pattern and initializer is used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [[x, y, z] = [4, 5, 6]] of [[]]) {
+ assert.sameValue(x, 4);
+ assert.sameValue(y, 5);
+ assert.sameValue(z, 6);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-elem-iter.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-elem-iter.js
new file mode 100644
index 0000000..10f190f
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-elem-iter.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-elem-iter.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: BindingElement with array binding pattern and initializer is not used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ [...]
+ e. Else,
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [[x, y, z] = [4, 5, 6]] of [[[7, 8, 9]]]) {
+ assert.sameValue(x, 7);
+ assert.sameValue(y, 8);
+ assert.sameValue(z, 9);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-elision-init.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-elision-init.js
new file mode 100644
index 0000000..b9950e5
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-elision-init.js
@@ -0,0 +1,70 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-elision-init.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: BindingElement with array binding pattern and initializer is used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+---*/
+var first = 0;
+var second = 0;
+function* g() {
+ first += 1;
+ yield;
+ second += 1;
+};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [[,] = g()] of [[]]) {
+ assert.sameValue(first, 1);
+ assert.sameValue(second, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-elision-iter.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-elision-iter.js
new file mode 100644
index 0000000..5469c56
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-elision-iter.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-elision-iter.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: BindingElement with array binding pattern and initializer is not used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ [...]
+ e. Else,
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+---*/
+var callCount = 0;
+function* g() {
+ callCount += 1;
+};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [[,] = g()] of [[[]]]) {
+ assert.sameValue(callCount, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-empty-init.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-empty-init.js
new file mode 100644
index 0000000..6004ceb
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-empty-init.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-empty-init.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: BindingElement with array binding pattern and initializer is used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+var initCount = 0;
+var iterCount = 0;
+var iter = function*() { iterCount += 1; }();
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [[] = function() { initCount += 1; return iter; }()] of [[]]) {
+ assert.sameValue(initCount, 1);
+ assert.sameValue(iterCount, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-empty-iter.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-empty-iter.js
new file mode 100644
index 0000000..f2e74a1
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-empty-iter.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-empty-iter.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: BindingElement with array binding pattern and initializer is not used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ [...]
+ e. Else,
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+var initCount = 0;
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [[] = function() { initCount += 1; }()] of [[[23]]]) {
+ assert.sameValue(initCount, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-rest-init.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-rest-init.js
new file mode 100644
index 0000000..0287efd
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-rest-init.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-rest-init.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: BindingElement with array binding pattern and initializer is used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+var values = [2, 1, 3];
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [[...x] = values] of [[]]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x[0], 2);
+ assert.sameValue(x[1], 1);
+ assert.sameValue(x[2], 3);
+ assert.sameValue(x.length, 3);
+ assert.notSameValue(x, values);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-rest-iter.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-rest-iter.js
new file mode 100644
index 0000000..cfbde9b
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-ary-rest-iter.js
@@ -0,0 +1,70 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-rest-iter.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: BindingElement with array binding pattern and initializer is not used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ [...]
+ e. Else,
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+var values = [2, 1, 3];
+var initCount = 0;
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [[...x] = function() { initCount += 1; }()] of [[values]]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x[0], 2);
+ assert.sameValue(x[1], 1);
+ assert.sameValue(x[2], 3);
+ assert.sameValue(x.length, 3);
+ assert.notSameValue(x, values);
+ assert.sameValue(initCount, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-exhausted.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-exhausted.js
new file mode 100644
index 0000000..300332b
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-exhausted.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-exhausted.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Destructuring initializer with an exhausted iterator (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [x = 23] of [[]]) {
+ assert.sameValue(x, 23);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-fn-name-arrow.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-fn-name-arrow.js
new file mode 100644
index 0000000..82bc9f2
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-fn-name-arrow.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-arrow.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: SingleNameBinding does assign name to arrow functions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [arrow = () => {}] of [[]]) {
+ assert.sameValue(arrow.name, 'arrow');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-fn-name-class.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-fn-name-class.js
new file mode 100644
index 0000000..cc1ec30
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-fn-name-class.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-class.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: SingleNameBinding assigns `name` to "anonymous" classes (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [cls = class {}, xCls = class X {}, xCls2 = class { static name() {} }] of [[]]) {
+ assert.sameValue(cls.name, 'cls');
+ assert.notSameValue(xCls.name, 'xCls');
+ assert.notSameValue(xCls2.name, 'xCls2');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-fn-name-cover.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-fn-name-cover.js
new file mode 100644
index 0000000..1504281
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-fn-name-cover.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-cover.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: SingleNameBinding does assign name to "anonymous" functions "through" cover grammar (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [cover = (function () {}), xCover = (0, function() {})] of [[]]) {
+ assert.sameValue(cover.name, 'cover');
+ assert.notSameValue(xCover.name, 'xCover');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-fn-name-fn.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-fn-name-fn.js
new file mode 100644
index 0000000..583140e
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-fn-name-fn.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-fn.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: SingleNameBinding assigns name to "anonymous" functions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [fn = function () {}, xFn = function x() {}] of [[]]) {
+ assert.sameValue(fn.name, 'fn');
+ assert.notSameValue(xFn.name, 'xFn');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-fn-name-gen.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-fn-name-gen.js
new file mode 100644
index 0000000..b04fe71
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-fn-name-gen.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-gen.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: SingleNameBinding assigns name to "anonymous" generator functions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [gen = function* () {}, xGen = function* x() {}] of [[]]) {
+ assert.sameValue(gen.name, 'gen');
+ assert.notSameValue(xGen.name, 'xGen');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-hole.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-hole.js
new file mode 100644
index 0000000..b593841
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-hole.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-hole.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Destructuring initializer with a "hole" (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ SingleNameBinding : BindingIdentifier Initializeropt
+ [...] 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v). 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [x = 23] of [[,]]) {
+ assert.sameValue(x, 23);
+ // another statement
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-skipped.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-skipped.js
new file mode 100644
index 0000000..c6a6f37
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-skipped.js
@@ -0,0 +1,67 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-skipped.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Destructuring initializer is not evaluated when value is not `undefined` (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+var initCount = 0;
+function counter() {
+ initCount += 1;
+}
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [w = counter(), x = counter(), y = counter(), z = counter()] of [[null, 0, false, '']]) {
+ assert.sameValue(w, null);
+ assert.sameValue(x, 0);
+ assert.sameValue(y, false);
+ assert.sameValue(z, '');
+ assert.sameValue(initCount, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-undef.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-undef.js
new file mode 100644
index 0000000..4a84ac0
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-init-undef.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-undef.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Destructuring initializer with an undefined value (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [x = 23] of [[undefined]]) {
+ assert.sameValue(x, 23);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-iter-complete.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-iter-complete.js
new file mode 100644
index 0000000..6d887be
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-iter-complete.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-complete.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: SingleNameBinding when value iteration completes (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ [...]
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [x] of [[]]) {
+ assert.sameValue(x, undefined);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-iter-done.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-iter-done.js
new file mode 100644
index 0000000..8c97c0e
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-iter-done.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-done.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: SingleNameBinding when value iteration was completed previously (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ [...]
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [_, x] of [[]]) {
+ assert.sameValue(x, undefined);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-iter-val.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-iter-val.js
new file mode 100644
index 0000000..7c67a0c
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-id-iter-val.js
@@ -0,0 +1,71 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-val.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: SingleNameBinding when value iteration was completed previously (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ [...]
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set
+ iteratorRecord.[[done]] to true.
+ iii. ReturnIfAbrupt(v).
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [x, y, z] of [[1, 2, 3]]) {
+ assert.sameValue(x, 1);
+ assert.sameValue(y, 2);
+ assert.sameValue(z, 3);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-obj-id-init.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-obj-id-init.js
new file mode 100644
index 0000000..6ce4e84
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-obj-id-init.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-id-init.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: BindingElement with object binding pattern and initializer is used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [{ x, y, z } = { x: 44, y: 55, z: 66 }] of [[]]) {
+ assert.sameValue(x, 44);
+ assert.sameValue(y, 55);
+ assert.sameValue(z, 66);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-obj-id.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-obj-id.js
new file mode 100644
index 0000000..0d5d04d
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-obj-id.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-id.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: BindingElement with object binding pattern and initializer is not used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [{ x, y, z } = { x: 44, y: 55, z: 66 }] of [[{ x: 11, y: 22, z: 33 }]]) {
+ assert.sameValue(x, 11);
+ assert.sameValue(y, 22);
+ assert.sameValue(z, 33);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-obj-prop-id-init.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-obj-prop-id-init.js
new file mode 100644
index 0000000..27372cd
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-obj-prop-id-init.js
@@ -0,0 +1,73 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-prop-id-init.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: BindingElement with object binding pattern and initializer is used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [{ u: v, w: x, y: z } = { u: 444, w: 555, y: 666 }] of [[]]) {
+ assert.sameValue(v, 444);
+ assert.sameValue(x, 555);
+ assert.sameValue(z, 666);
+
+ assert.throws(ReferenceError, function() {
+ u;
+ });
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+ assert.throws(ReferenceError, function() {
+ y;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-obj-prop-id.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-obj-prop-id.js
new file mode 100644
index 0000000..4d9c70d
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elem-obj-prop-id.js
@@ -0,0 +1,73 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-prop-id.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: BindingElement with object binding pattern and initializer is not used (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [{ u: v, w: x, y: z } = { u: 444, w: 555, y: 666 }] of [[{ u: 777, w: 888, y: 999 }]]) {
+ assert.sameValue(v, 777);
+ assert.sameValue(x, 888);
+ assert.sameValue(z, 999);
+
+ assert.throws(ReferenceError, function() {
+ u;
+ });
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+ assert.throws(ReferenceError, function() {
+ y;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elision-exhausted.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elision-exhausted.js
new file mode 100644
index 0000000..cae0ba7
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elision-exhausted.js
@@ -0,0 +1,68 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elision-exhausted.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Elision accepts exhausted iterator (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ 2. Return NormalCompletion(empty).
+
+---*/
+var iter = function*() {}();
+iter.next();
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [,] of [iter]) {
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-elision.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elision.js
new file mode 100644
index 0000000..aa36cec
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-elision.js
@@ -0,0 +1,77 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elision.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Elision advances iterator (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ 2. Return NormalCompletion(empty).
+
+---*/
+var first = 0;
+var second = 0;
+function* g() {
+ first += 1;
+ yield;
+ second += 1;
+};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [,] of [g()]) {
+ assert.sameValue(first, 1);
+ assert.sameValue(second, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-empty.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-empty.js
new file mode 100644
index 0000000..f06399c
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-empty.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-empty.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: No iteration occurs for an "empty" array binding pattern (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ ]
+
+ 1. Return NormalCompletion(empty).
+
+---*/
+var iterations = 0;
+var iter = function*() {
+ iterations += 1;
+}();
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [] of [iter]) {
+ assert.sameValue(iterations, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-ary-elem.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-ary-elem.js
new file mode 100644
index 0000000..55a2061
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-ary-elem.js
@@ -0,0 +1,84 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-ary-elem.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Rest element containing an array BindingElementList pattern (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ [...]
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set
+ iteratorRecord.[[done]] to true.
+ iii. ReturnIfAbrupt(v).
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [...[x, y, z]] of [[3, 4, 5]]) {
+ assert.sameValue(x, 3);
+ assert.sameValue(y, 4);
+ assert.sameValue(z, 5);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-ary-elision.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-ary-elision.js
new file mode 100644
index 0000000..6709c68
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-ary-elision.js
@@ -0,0 +1,90 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-ary-elision.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Rest element containing an elision (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ 2. Return NormalCompletion(empty).
+
+---*/
+var first = 0;
+var second = 0;
+function* g() {
+ first += 1;
+ yield;
+ second += 1;
+};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [...[,]] of [g()]) {
+ assert.sameValue(first, 1);
+ assert.sameValue(second, 1);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-ary-empty.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-ary-empty.js
new file mode 100644
index 0000000..ad91032
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-ary-empty.js
@@ -0,0 +1,73 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-ary-empty.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Rest element containing an "empty" array pattern (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [generators, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ ]
+
+ 1. Return NormalCompletion(empty).
+
+---*/
+var iterations = 0;
+var iter = function*() {
+ iterations += 1;
+}();
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [...[]] of [iter]) {
+ assert.sameValue(iterations, 1);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-ary-rest.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-ary-rest.js
new file mode 100644
index 0000000..2789821
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-ary-rest.js
@@ -0,0 +1,69 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-ary-rest.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Rest element containing a rest element (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+---*/
+var values = [1, 2, 3];
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [...[...x]] of [values]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x.length, 3);
+ assert.sameValue(x[0], 1);
+ assert.sameValue(x[1], 2);
+ assert.sameValue(x[2], 3);
+ assert.notSameValue(x, values);
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-id-elision.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-id-elision.js
new file mode 100644
index 0000000..9034397
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-id-elision.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-elision.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Rest element following elision elements (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ ArrayBindingPattern : [ Elisionopt BindingRestElement ]
+ 1. If Elision is present, then
+ a. Let status be the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with
+ iteratorRecord as the argument.
+ b. ReturnIfAbrupt(status).
+ 2. Return the result of performing IteratorBindingInitialization for
+ BindingRestElement with iteratorRecord and environment as arguments.
+---*/
+var values = [1, 2, 3, 4, 5];
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [ , , ...x] of [values]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x.length, 3);
+ assert.sameValue(x[0], 3);
+ assert.sameValue(x[1], 4);
+ assert.sameValue(x[2], 5);
+ assert.notSameValue(x, values);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-id-exhausted.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-id-exhausted.js
new file mode 100644
index 0000000..3f137a3
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-id-exhausted.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-exhausted.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: RestElement applied to an exhausted iterator (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [Symbol.iterator, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. If environment is undefined, return PutValue(lhs, A).
+ ii. Return InitializeReferencedBinding(lhs, A).
+
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [, , ...x] of [[1, 2]]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x.length, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-id.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-id.js
new file mode 100644
index 0000000..dc61d9c
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-id.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Lone rest element (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ [...] 3. Let A be ArrayCreate(0). [...] 5. Repeat
+ [...]
+ f. Let status be CreateDataProperty(A, ToString (n), nextValue).
+ [...]
+---*/
+var values = [1, 2, 3];
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [...x] of [values]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x.length, 3);
+ assert.sameValue(x[0], 1);
+ assert.sameValue(x[1], 2);
+ assert.sameValue(x[2], 3);
+ assert.notSameValue(x, values);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-init-ary.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-init-ary.js
new file mode 100644
index 0000000..373064f
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-init-ary.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-init-ary.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Reset element (nested array pattern) does not support initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+negative:
+ phase: early
+ type: SyntaxError
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [...[ x ] = []] of [[]]) {
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-init-id.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-init-id.js
new file mode 100644
index 0000000..62ea35a
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-init-id.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-init-id.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Reset element (identifier) does not support initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+negative:
+ phase: early
+ type: SyntaxError
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [...x = []] of [[]]) {
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-init-obj.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-init-obj.js
new file mode 100644
index 0000000..329f588
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-init-obj.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-init-obj.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Reset element (nested object pattern) does not support initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+negative:
+ phase: early
+ type: SyntaxError
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [...{ x } = []] of [[]]) {
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-not-final-ary.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-not-final-ary.js
new file mode 100644
index 0000000..6fe2393
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-not-final-ary.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-not-final-ary.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Rest element (array binding pattern) may not be followed by any element (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+negative:
+ phase: early
+ type: SyntaxError
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [...[x], y] of [[1, 2, 3]]) {
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-not-final-id.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-not-final-id.js
new file mode 100644
index 0000000..cd554a9
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-not-final-id.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-not-final-id.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Rest element (identifier) may not be followed by any element (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+negative:
+ phase: early
+ type: SyntaxError
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [...x, y] of [[1, 2, 3]]) {
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-not-final-obj.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-not-final-obj.js
new file mode 100644
index 0000000..7694f4d
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-not-final-obj.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-not-final-obj.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Rest element (object binding pattern) may not be followed by any element (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+negative:
+ phase: early
+ type: SyntaxError
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [...{ x }, y] of [[1, 2, 3]]) {
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-obj-id.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-obj-id.js
new file mode 100644
index 0000000..74ef0ae
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-obj-id.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-obj-id.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Rest element containing an object binding pattern (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [...{ length }] of [[1, 2, 3]]) {
+ assert.sameValue(length, 3);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-obj-prop-id.js b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-obj-prop-id.js
new file mode 100644
index 0000000..f902325
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-ary-ptrn-rest-obj-prop-id.js
@@ -0,0 +1,70 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-obj-prop-id.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Rest element containing an object binding pattern (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var [...{ 0: v, 1: w, 2: x, 3: y, length: z }] of [[7, 8, 9]]) {
+ assert.sameValue(v, 7);
+ assert.sameValue(w, 8);
+ assert.sameValue(x, 9);
+ assert.sameValue(y, undefined);
+ assert.sameValue(z, 3);
+
+ assert.throws(ReferenceError, function() {
+ length;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-empty.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-empty.js
new file mode 100644
index 0000000..016cad8
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-empty.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-empty.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: No property access occurs for an "empty" object binding pattern (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ Runtime Semantics: BindingInitialization
+
+ ObjectBindingPattern : { }
+
+ 1. Return NormalCompletion(empty).
+---*/
+var accessCount = 0;
+var obj = Object.defineProperty({}, 'attr', {
+ get: function() {
+ accessCount += 1;
+ }
+});
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var {} of [obj]) {
+ assert.sameValue(accessCount, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-init-fn-name-arrow.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-init-fn-name-arrow.js
new file mode 100644
index 0000000..12d1044
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-init-fn-name-arrow.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-arrow.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: SingleNameBinding assigns `name` to arrow functions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var { arrow = () => {} } of [{}]) {
+ assert.sameValue(arrow.name, 'arrow');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-init-fn-name-class.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-init-fn-name-class.js
new file mode 100644
index 0000000..32cfb32
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-init-fn-name-class.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-class.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: SingleNameBinding assigns `name` to "anonymous" classes (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var { cls = class {}, xCls = class X {}, xCls2 = class { static name() {} } } of [{}]) {
+ assert.sameValue(cls.name, 'cls');
+ assert.notSameValue(xCls.name, 'xCls');
+ assert.notSameValue(xCls2.name, 'xCls2');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-init-fn-name-cover.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-init-fn-name-cover.js
new file mode 100644
index 0000000..cd939d7
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-init-fn-name-cover.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-cover.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: SingleNameBinding assigns `name` to "anonymous" functions "through" cover grammar (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var { cover = (function () {}), xCover = (0, function() {}) } of [{}]) {
+ assert.sameValue(cover.name, 'cover');
+ assert.notSameValue(xCover.name, 'xCover');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-init-fn-name-fn.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-init-fn-name-fn.js
new file mode 100644
index 0000000..4760fff
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-init-fn-name-fn.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-fn.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: SingleNameBinding assigns name to "anonymous" functions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var { fn = function () {}, xFn = function x() {} } of [{}]) {
+ assert.sameValue(fn.name, 'fn');
+ assert.notSameValue(xFn.name, 'xFn');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-init-fn-name-gen.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-init-fn-name-gen.js
new file mode 100644
index 0000000..2753014
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-init-fn-name-gen.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-gen.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: SingleNameBinding assigns name to "anonymous" generator functions (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var { gen = function* () {}, xGen = function* x() {} } of [{}]) {
+ assert.sameValue(gen.name, 'gen');
+ assert.notSameValue(xGen.name, 'xGen');
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-init-skipped.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-init-skipped.js
new file mode 100644
index 0000000..7390d76
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-init-skipped.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-skipped.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Destructuring initializer is not evaluated when value is not `undefined` (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ [...]
+---*/
+var initCount = 0;
+function counter() {
+ initCount += 1;
+}
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var { w = counter(), x = counter(), y = counter(), z = counter() } of [{ w: null, x: 0, y: false, z: '' }]) {
+ assert.sameValue(w, null);
+ assert.sameValue(x, 0);
+ assert.sameValue(y, false);
+ assert.sameValue(z, '');
+ assert.sameValue(initCount, 0);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-trailing-comma.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-trailing-comma.js
new file mode 100644
index 0000000..78c420c
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-id-trailing-comma.js
@@ -0,0 +1,56 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-trailing-comma.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Trailing comma is allowed following BindingPropertyList (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+
+ ObjectBindingPattern[Yield] :
+ { }
+ { BindingPropertyList[?Yield] }
+ { BindingPropertyList[?Yield] , }
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var { x, } of [{ x: 23 }]) {
+ assert.sameValue(x, 23);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-ary-init.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-ary-init.js
new file mode 100644
index 0000000..be19e57
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-ary-init.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary-init.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Object binding pattern with "nested" array binding pattern using initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var { w: [x, y, z] = [4, 5, 6] } of [{}]) {
+ assert.sameValue(x, 4);
+ assert.sameValue(y, 5);
+ assert.sameValue(z, 6);
+
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-ary-trailing-comma.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-ary-trailing-comma.js
new file mode 100644
index 0000000..372cdf5
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-ary-trailing-comma.js
@@ -0,0 +1,56 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary-trailing-comma.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Trailing comma is allowed following BindingPropertyList (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+
+ ObjectBindingPattern[Yield] :
+ { }
+ { BindingPropertyList[?Yield] }
+ { BindingPropertyList[?Yield] , }
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var { x: [y], } of [{ x: [45] }]) {
+ assert.sameValue(y,45);
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-ary.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-ary.js
new file mode 100644
index 0000000..327f4e2
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-ary.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Object binding pattern with "nested" array binding pattern not using initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var { w: [x, y, z] = [4, 5, 6] } of [{ w: [7, undefined, ] }]) {
+ assert.sameValue(x, 7);
+ assert.sameValue(y, undefined);
+ assert.sameValue(z, undefined);
+
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-id-init-skipped.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-id-init-skipped.js
new file mode 100644
index 0000000..ff715cb
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-id-init-skipped.js
@@ -0,0 +1,78 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init-skipped.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Destructuring initializer is not evaluated when value is not `undefined` (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+---*/
+var initCount = 0;
+function counter() {
+ initCount += 1;
+}
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var { s: t = counter(), u: v = counter(), w: x = counter(), y: z = counter() } of [{ s: null, u: 0, w: false, y: '' }]) {
+ assert.sameValue(t, null);
+ assert.sameValue(v, 0);
+ assert.sameValue(x, false);
+ assert.sameValue(z, '');
+ assert.sameValue(initCount, 0);
+
+ assert.throws(ReferenceError, function() {
+ s;
+ });
+ assert.throws(ReferenceError, function() {
+ u;
+ });
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+ assert.throws(ReferenceError, function() {
+ y;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-id-init.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-id-init.js
new file mode 100644
index 0000000..506e774
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-id-init.js
@@ -0,0 +1,59 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Binding as specified via property name, identifier, and initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var { x: y = 33 } of [{ }]) {
+ assert.sameValue(y, 33);
+ assert.throws(ReferenceError, function() {
+ x;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-id-trailing-comma.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-id-trailing-comma.js
new file mode 100644
index 0000000..85de17c
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-id-trailing-comma.js
@@ -0,0 +1,60 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-trailing-comma.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Trailing comma is allowed following BindingPropertyList (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3 Destructuring Binding Patterns
+
+ ObjectBindingPattern[Yield] :
+ { }
+ { BindingPropertyList[?Yield] }
+ { BindingPropertyList[?Yield] , }
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var { x: y, } of [{ x: 23 }]) {
+ assert.sameValue(y, 23);
+
+ assert.throws(ReferenceError, function() {
+ x;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-id.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-id.js
new file mode 100644
index 0000000..3c6327c
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-id.js
@@ -0,0 +1,59 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Binding as specified via property name and identifier (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var { x: y } of [{ x: 23 }]) {
+ assert.sameValue(y, 23);
+ assert.throws(ReferenceError, function() {
+ x;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-obj-init.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-obj-init.js
new file mode 100644
index 0000000..6646adb
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-obj-init.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj-init.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Object binding pattern with "nested" object binding pattern using initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var { w: { x, y, z } = { x: 4, y: 5, z: 6 } } of [{ w: undefined }]) {
+ assert.sameValue(x, 4);
+ assert.sameValue(y, 5);
+ assert.sameValue(z, 6);
+
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-obj.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-obj.js
new file mode 100644
index 0000000..2c3c0ce
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-prop-obj.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Object binding pattern with "nested" object binding pattern not using initializer (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var { w: { x, y, z } = { x: 4, y: 5, z: 6 } } of [{ w: { x: undefined, z: 7 } }]) {
+ assert.sameValue(x, undefined);
+ assert.sameValue(y, undefined);
+ assert.sameValue(z, 7);
+
+ assert.throws(ReferenceError, function() {
+ w;
+ });
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-getter.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-getter.js
new file mode 100644
index 0000000..a052d41
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-getter.js
@@ -0,0 +1,57 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-getter.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Getter is called when obj is being deconstructed to a rest Object (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [object-rest, destructuring-binding, async-iteration]
+flags: [generated, async]
+includes: [propertyHelper.js]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+---*/
+var count = 0;
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var {...x} of [{ get v() { count++; return 2; } }]) {
+ assert.sameValue(x.v, 2);
+ assert.sameValue(count, 1);
+
+ verifyEnumerable(x, "v");
+ verifyWritable(x, "v");
+ verifyConfigurable(x, "v");
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-nested-obj.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-nested-obj.js
new file mode 100644
index 0000000..869599f
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-nested-obj.js
@@ -0,0 +1,54 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-nested-obj.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: When DestructuringAssignmentTarget is an object literal, it should be parsed parsed as a DestructuringAssignmentPattern and evaluated as a destructuring assignment. (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [object-rest, destructuring-binding, async-iteration]
+flags: [generated, async]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+---*/
+var obj = {a: 3, b: 4};
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var {a, b, ...{c, e}} of [{a: 1, b: 2, c: 3, d: 4, e: 5}]) {
+ assert.sameValue(a, 1);
+ assert.sameValue(b, 2);
+ assert.sameValue(c, 3);
+ assert.sameValue(e, 5);
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-obj-nested-rest.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-obj-nested-rest.js
new file mode 100644
index 0000000..bb13ba9
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-obj-nested-rest.js
@@ -0,0 +1,64 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-obj-nested-rest.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: When DestructuringAssignmentTarget is an object literal, it should be parsed parsed as a DestructuringAssignmentPattern and evaluated as a destructuring assignment and object rest desconstruction is allowed in that case. (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [object-rest, destructuring-binding, async-iteration]
+flags: [generated, async]
+includes: [propertyHelper.js]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var {a, b, ...{c, ...rest}} of [{a: 1, b: 2, c: 3, d: 4, e: 5}]) {
+ assert.sameValue(a, 1);
+ assert.sameValue(b, 2);
+ assert.sameValue(c, 3);
+
+ assert.sameValue(rest.d, 4);
+ assert.sameValue(rest.e, 5);
+
+ verifyEnumerable(rest, "d");
+ verifyWritable(rest, "d");
+ verifyConfigurable(rest, "d");
+
+ verifyEnumerable(rest, "e");
+ verifyWritable(rest, "e");
+ verifyConfigurable(rest, "e");
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-obj-own-property.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-obj-own-property.js
new file mode 100644
index 0000000..753d928
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-obj-own-property.js
@@ -0,0 +1,55 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-obj-own-property.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Rest object contains just soruce object's own properties (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [object-rest, destructuring-binding, async-iteration]
+flags: [generated, async]
+includes: [propertyHelper.js]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+---*/
+var o = Object.create({ x: 1, y: 2 });
+o.z = 3;
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var { x, ...{y , z} } of [o]) {
+ assert.sameValue(x, 1);
+ assert.sameValue(y, undefined);
+ assert.sameValue(z, 3);
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-skip-non-enumerable.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-skip-non-enumerable.js
new file mode 100644
index 0000000..152d002
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-skip-non-enumerable.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-skip-non-enumerable.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Rest object doesn't contain non-enumerable properties (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [object-rest, destructuring-binding, async-iteration]
+flags: [generated, async]
+includes: [propertyHelper.js]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+---*/
+var o = {a: 3, b: 4};
+Object.defineProperty(o, "x", { value: 4, enumerable: false });
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var {...rest} of [o]) {
+ assert.sameValue(rest.a, 3);
+ assert.sameValue(rest.b, 4);
+ assert.sameValue(rest.x, undefined);
+
+ verifyEnumerable(rest, "a");
+ verifyWritable(rest, "a");
+ verifyConfigurable(rest, "a");
+
+ verifyEnumerable(rest, "b");
+ verifyWritable(rest, "b");
+ verifyConfigurable(rest, "b");
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
diff --git a/test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-val-obj.js b/test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-val-obj.js
new file mode 100644
index 0000000..cc58bcc
--- /dev/null
+++ b/test/language/statements/for-await-of/dstr-var-obj-ptrn-rest-val-obj.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-val-obj.case
+// - src/dstr-binding/default/for-await-of-var.template
+/*---
+description: Rest object contains just unextracted data (for-await-of statement)
+esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
+features: [object-rest, destructuring-binding, async-iteration]
+flags: [generated, async]
+includes: [propertyHelper.js]
+info: |
+ IterationStatement :
+ for await ( var ForBinding of AssignmentExpression ) Statement
+
+ [...]
+ 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
+ varBinding, labelSet, async).
+
+ 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
+
+ [...]
+ 3. Let destructuring be IsDestructuring of lhs.
+ [...]
+ 5. Repeat
+ [...]
+ h. If destructuring is false, then
+ [...]
+ i. Else
+ i. If lhsKind is assignment, then
+ [...]
+ ii. Else if lhsKind is varBinding, then
+ 1. Assert: lhs is a ForBinding.
+ 2. Let status be the result of performing BindingInitialization
+ for lhs passing nextValue and undefined as the arguments.
+ [...]
+---*/
+
+var iterCount = 0;
+
+async function fn() {
+ for await (var {a, b, ...rest} of [{x: 1, y: 2, a: 5, b: 3}]) {
+ assert.sameValue(rest.x, 1);
+ assert.sameValue(rest.y, 2);
+ assert.sameValue(rest.a, undefined);
+ assert.sameValue(rest.b, undefined);
+
+ verifyEnumerable(rest, "x");
+ verifyWritable(rest, "x");
+ verifyConfigurable(rest, "x");
+
+ verifyEnumerable(rest, "y");
+ verifyWritable(rest, "y");
+ verifyConfigurable(rest, "y");
+
+
+ iterCount += 1;
+ }
+}
+
+fn()
+ .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
+ .then($DONE, $DONE);
+
