blob: e70ecdaff1af21221c708c0d31bda29c0175cf45 [file] [log] [blame]
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/builtins/builtins-utils.h"
#include "src/builtins/builtins.h"
#include "src/code-factory.h"
#include "src/code-stub-assembler.h"
#include "src/compiler.h"
#include "src/uri.h"
namespace v8 {
namespace internal {
// ES6 section 18.2.6.2 decodeURI (encodedURI)
BUILTIN(GlobalDecodeURI) {
HandleScope scope(isolate);
Handle<String> encoded_uri;
ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
isolate, encoded_uri,
Object::ToString(isolate, args.atOrUndefined(isolate, 1)));
RETURN_RESULT_OR_FAILURE(isolate, Uri::DecodeUri(isolate, encoded_uri));
}
// ES6 section 18.2.6.3 decodeURIComponent (encodedURIComponent)
BUILTIN(GlobalDecodeURIComponent) {
HandleScope scope(isolate);
Handle<String> encoded_uri_component;
ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
isolate, encoded_uri_component,
Object::ToString(isolate, args.atOrUndefined(isolate, 1)));
RETURN_RESULT_OR_FAILURE(
isolate, Uri::DecodeUriComponent(isolate, encoded_uri_component));
}
// ES6 section 18.2.6.4 encodeURI (uri)
BUILTIN(GlobalEncodeURI) {
HandleScope scope(isolate);
Handle<String> uri;
ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
isolate, uri, Object::ToString(isolate, args.atOrUndefined(isolate, 1)));
RETURN_RESULT_OR_FAILURE(isolate, Uri::EncodeUri(isolate, uri));
}
// ES6 section 18.2.6.5 encodeURIComponenet (uriComponent)
BUILTIN(GlobalEncodeURIComponent) {
HandleScope scope(isolate);
Handle<String> uri_component;
ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
isolate, uri_component,
Object::ToString(isolate, args.atOrUndefined(isolate, 1)));
RETURN_RESULT_OR_FAILURE(isolate,
Uri::EncodeUriComponent(isolate, uri_component));
}
// ES6 section B.2.1.1 escape (string)
BUILTIN(GlobalEscape) {
HandleScope scope(isolate);
Handle<String> string;
ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
isolate, string,
Object::ToString(isolate, args.atOrUndefined(isolate, 1)));
RETURN_RESULT_OR_FAILURE(isolate, Uri::Escape(isolate, string));
}
// ES6 section B.2.1.2 unescape (string)
BUILTIN(GlobalUnescape) {
HandleScope scope(isolate);
Handle<String> string;
ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
isolate, string,
Object::ToString(isolate, args.atOrUndefined(isolate, 1)));
RETURN_RESULT_OR_FAILURE(isolate, Uri::Unescape(isolate, string));
}
// ES6 section 18.2.1 eval (x)
BUILTIN(GlobalEval) {
HandleScope scope(isolate);
Handle<Object> x = args.atOrUndefined(isolate, 1);
Handle<JSFunction> target = args.target();
Handle<JSObject> target_global_proxy(target->global_proxy(), isolate);
if (!x->IsString()) return *x;
if (!Builtins::AllowDynamicFunction(isolate, target, target_global_proxy)) {
isolate->CountUsage(v8::Isolate::kFunctionConstructorReturnedUndefined);
return isolate->heap()->undefined_value();
}
Handle<JSFunction> function;
ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
isolate, function,
Compiler::GetFunctionFromString(handle(target->native_context(), isolate),
Handle<String>::cast(x),
NO_PARSE_RESTRICTION, kNoSourcePosition));
RETURN_RESULT_OR_FAILURE(
isolate,
Execution::Call(isolate, function, target_global_proxy, 0, nullptr));
}
// ES6 section 18.2.2 isFinite ( number )
void Builtins::Generate_GlobalIsFinite(compiler::CodeAssemblerState* state) {
typedef CodeStubAssembler::Label Label;
typedef compiler::Node Node;
typedef CodeStubAssembler::Variable Variable;
CodeStubAssembler assembler(state);
Node* context = assembler.Parameter(4);
Label return_true(&assembler), return_false(&assembler);
// We might need to loop once for ToNumber conversion.
Variable var_num(&assembler, MachineRepresentation::kTagged);
Label loop(&assembler, &var_num);
var_num.Bind(assembler.Parameter(1));
assembler.Goto(&loop);
assembler.Bind(&loop);
{
// Load the current {num} value.
Node* num = var_num.value();
// Check if {num} is a Smi or a HeapObject.
assembler.GotoIf(assembler.TaggedIsSmi(num), &return_true);
// Check if {num} is a HeapNumber.
Label if_numisheapnumber(&assembler),
if_numisnotheapnumber(&assembler, Label::kDeferred);
assembler.Branch(assembler.IsHeapNumberMap(assembler.LoadMap(num)),
&if_numisheapnumber, &if_numisnotheapnumber);
assembler.Bind(&if_numisheapnumber);
{
// Check if {num} contains a finite, non-NaN value.
Node* num_value = assembler.LoadHeapNumberValue(num);
assembler.BranchIfFloat64IsNaN(assembler.Float64Sub(num_value, num_value),
&return_false, &return_true);
}
assembler.Bind(&if_numisnotheapnumber);
{
// Need to convert {num} to a Number first.
Callable callable = CodeFactory::NonNumberToNumber(assembler.isolate());
var_num.Bind(assembler.CallStub(callable, context, num));
assembler.Goto(&loop);
}
}
assembler.Bind(&return_true);
assembler.Return(assembler.BooleanConstant(true));
assembler.Bind(&return_false);
assembler.Return(assembler.BooleanConstant(false));
}
// ES6 section 18.2.3 isNaN ( number )
void Builtins::Generate_GlobalIsNaN(compiler::CodeAssemblerState* state) {
typedef CodeStubAssembler::Label Label;
typedef compiler::Node Node;
typedef CodeStubAssembler::Variable Variable;
CodeStubAssembler assembler(state);
Node* context = assembler.Parameter(4);
Label return_true(&assembler), return_false(&assembler);
// We might need to loop once for ToNumber conversion.
Variable var_num(&assembler, MachineRepresentation::kTagged);
Label loop(&assembler, &var_num);
var_num.Bind(assembler.Parameter(1));
assembler.Goto(&loop);
assembler.Bind(&loop);
{
// Load the current {num} value.
Node* num = var_num.value();
// Check if {num} is a Smi or a HeapObject.
assembler.GotoIf(assembler.TaggedIsSmi(num), &return_false);
// Check if {num} is a HeapNumber.
Label if_numisheapnumber(&assembler),
if_numisnotheapnumber(&assembler, Label::kDeferred);
assembler.Branch(assembler.IsHeapNumberMap(assembler.LoadMap(num)),
&if_numisheapnumber, &if_numisnotheapnumber);
assembler.Bind(&if_numisheapnumber);
{
// Check if {num} contains a NaN.
Node* num_value = assembler.LoadHeapNumberValue(num);
assembler.BranchIfFloat64IsNaN(num_value, &return_true, &return_false);
}
assembler.Bind(&if_numisnotheapnumber);
{
// Need to convert {num} to a Number first.
Callable callable = CodeFactory::NonNumberToNumber(assembler.isolate());
var_num.Bind(assembler.CallStub(callable, context, num));
assembler.Goto(&loop);
}
}
assembler.Bind(&return_true);
assembler.Return(assembler.BooleanConstant(true));
assembler.Bind(&return_false);
assembler.Return(assembler.BooleanConstant(false));
}
} // namespace internal
} // namespace v8