blob: d0b1191a9f4e0ae6c173d261ceeeb975dd7108bb [file] [log] [blame]
// Copyright 2011 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.
namespace v8 {
namespace internal {
class AstValueFactory;
class DoExpression;
class Isolate;
class ParseInfo;
class Parser;
class DeclarationScope;
class Scope;
class Rewriter {
// Rewrite top-level code (ECMA 262 "programs") so as to conservatively
// include an assignment of the value of the last statement in the code to
// a compiler-generated temporary variable wherever needed.
// Assumes code has been parsed and scopes have been analyzed. Mutates the
// AST, so the AST should not continue to be used in the case of failure.
static bool Rewrite(ParseInfo* info);
// Rewrite a list of statements, using the same rules as a top-level program,
// to ensure identical behaviour of completion result. The temporary is added
// to the closure scope of the do-expression, which matches the closure scope
// of the outer scope (the do-expression itself runs in a block scope, not a
// closure scope). This closure scope needs to be passed in since the
// do-expression could have dropped its own block scope.
static bool Rewrite(Parser* parser, DeclarationScope* closure_scope,
DoExpression* expr, AstValueFactory* factory);
} // namespace internal
} // namespace v8