Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 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_ |