1 // Copyright 2011 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef V8_PARSING_REWRITER_H_ 6 #define V8_PARSING_REWRITER_H_ 7 8 namespace v8 { 9 namespace internal { 10 11 class AstValueFactory; 12 class DoExpression; 13 class ParseInfo; 14 class Parser; 15 16 class Rewriter { 17 public: 18 // Rewrite top-level code (ECMA 262 "programs") so as to conservatively 19 // include an assignment of the value of the last statement in the code to 20 // a compiler-generated temporary variable wherever needed. 21 // 22 // Assumes code has been parsed and scopes have been analyzed. Mutates the 23 // AST, so the AST should not continue to be used in the case of failure. 24 static bool Rewrite(ParseInfo* info); 25 26 // Rewrite a list of statements, using the same rules as a top-level program, 27 // to ensure identical behaviour of completion result. 28 static bool Rewrite(Parser* parser, DoExpression* expr, 29 AstValueFactory* factory); 30 }; 31 32 33 } // namespace internal 34 } // namespace v8 35 36 #endif // V8_PARSING_REWRITER_H_ 37