// Copyright 2011 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_PARSING_REWRITER_H_
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#define V8_PARSING_REWRITER_H_
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namespace v8 {
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namespace internal {
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class AstValueFactory;
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class DoExpression;
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class Isolate;
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class ParseInfo;
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class Parser;
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class DeclarationScope;
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class Scope;
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class Rewriter {
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public:
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// Rewrite top-level code (ECMA 262 "programs") so as to conservatively
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// include an assignment of the value of the last statement in the code to
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// a compiler-generated temporary variable wherever needed.
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//
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// Assumes code has been parsed and scopes have been analyzed. Mutates the
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// AST, so the AST should not continue to be used in the case of failure.
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static bool Rewrite(ParseInfo* info);
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// Rewrite a list of statements, using the same rules as a top-level program,
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// to ensure identical behaviour of completion result. The temporary is added
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// to the closure scope of the do-expression, which matches the closure scope
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// of the outer scope (the do-expression itself runs in a block scope, not a
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// closure scope). This closure scope needs to be passed in since the
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// do-expression could have dropped its own block scope.
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static bool Rewrite(Parser* parser, DeclarationScope* closure_scope,
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DoExpression* expr, AstValueFactory* factory);
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};
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} // namespace internal
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} // namespace v8
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#endif // V8_PARSING_REWRITER_H_
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