gfx/angle/src/compiler/preprocessor/MacroExpander.h@141e0f1194b1 (annotated)
gfx/angle/src/compiler/preprocessor/MacroExpander.h
Wed, 31 Dec 2014 07:16:47 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 07:16:47 +0100
- branch
- TOR_BUG_9701
- changeset 3
- 141e0f1194b1
- permissions
- -rw-r--r--
Revert simplistic fix pending revisit of Mozilla integration attempt.
| michael@0 | 1 | // |
| michael@0 | 2 | // Copyright (c) 2012 The ANGLE Project Authors. All rights reserved. |
| michael@0 | 3 | // Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 4 | // found in the LICENSE file. |
| michael@0 | 5 | // |
| michael@0 | 6 | |
| michael@0 | 7 | #ifndef COMPILER_PREPROCESSOR_MACRO_EXPANDER_H_ |
| michael@0 | 8 | #define COMPILER_PREPROCESSOR_MACRO_EXPANDER_H_ |
| michael@0 | 9 | |
| michael@0 | 10 | #include <cassert> |
| michael@0 | 11 | #include <memory> |
| michael@0 | 12 | #include <vector> |
| michael@0 | 13 | |
| michael@0 | 14 | #include "Lexer.h" |
| michael@0 | 15 | #include "Macro.h" |
| michael@0 | 16 | #include "pp_utils.h" |
| michael@0 | 17 | |
| michael@0 | 18 | namespace pp |
| michael@0 | 19 | { |
| michael@0 | 20 | |
| michael@0 | 21 | class Diagnostics; |
| michael@0 | 22 | |
| michael@0 | 23 | class MacroExpander : public Lexer |
| michael@0 | 24 | { |
| michael@0 | 25 | public: |
| michael@0 | 26 | MacroExpander(Lexer* lexer, MacroSet* macroSet, Diagnostics* diagnostics); |
| michael@0 | 27 | virtual ~MacroExpander(); |
| michael@0 | 28 | |
| michael@0 | 29 | virtual void lex(Token* token); |
| michael@0 | 30 | |
| michael@0 | 31 | private: |
| michael@0 | 32 | PP_DISALLOW_COPY_AND_ASSIGN(MacroExpander); |
| michael@0 | 33 | |
| michael@0 | 34 | void getToken(Token* token); |
| michael@0 | 35 | void ungetToken(const Token& token); |
| michael@0 | 36 | bool isNextTokenLeftParen(); |
| michael@0 | 37 | |
| michael@0 | 38 | bool pushMacro(const Macro& macro, const Token& identifier); |
| michael@0 | 39 | void popMacro(); |
| michael@0 | 40 | |
| michael@0 | 41 | bool expandMacro(const Macro& macro, |
| michael@0 | 42 | const Token& identifier, |
| michael@0 | 43 | std::vector<Token>* replacements); |
| michael@0 | 44 | |
| michael@0 | 45 | typedef std::vector<Token> MacroArg; |
| michael@0 | 46 | bool collectMacroArgs(const Macro& macro, |
| michael@0 | 47 | const Token& identifier, |
| michael@0 | 48 | std::vector<MacroArg>* args); |
| michael@0 | 49 | void replaceMacroParams(const Macro& macro, |
| michael@0 | 50 | const std::vector<MacroArg>& args, |
| michael@0 | 51 | std::vector<Token>* replacements); |
| michael@0 | 52 | |
| michael@0 | 53 | struct MacroContext |
| michael@0 | 54 | { |
| michael@0 | 55 | const Macro* macro; |
| michael@0 | 56 | std::size_t index; |
| michael@0 | 57 | std::vector<Token> replacements; |
| michael@0 | 58 | |
| michael@0 | 59 | MacroContext() : macro(0), index(0) { } |
| michael@0 | 60 | bool empty() const { return index == replacements.size(); } |
| michael@0 | 61 | const Token& get() { return replacements[index++]; } |
| michael@0 | 62 | void unget() { assert(index > 0); --index; } |
| michael@0 | 63 | }; |
| michael@0 | 64 | |
| michael@0 | 65 | Lexer* mLexer; |
| michael@0 | 66 | MacroSet* mMacroSet; |
| michael@0 | 67 | Diagnostics* mDiagnostics; |
| michael@0 | 68 | |
| michael@0 | 69 | std::auto_ptr<Token> mReserveToken; |
| michael@0 | 70 | std::vector<MacroContext*> mContextStack; |
| michael@0 | 71 | }; |
| michael@0 | 72 | |
| michael@0 | 73 | } // namespace pp |
| michael@0 | 74 | #endif // COMPILER_PREPROCESSOR_MACRO_EXPANDER_H_ |
| michael@0 | 75 |
