kc3-lang/angle/src/compiler/preprocessor/MacroExpander.h

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• Hash : acf2f3ad
  Author :
  Date : 2017-11-21T19:22:44
  

  Apply Chromium style fixes.
  
  This addresses several minor code quality issues that are validated
  in Chromium, but not yet applied to ANGLE:
  
  * constructors and destructors must be defined out-of-line
  * auto is not allowed for simple pointer types
  * use override everywhere instead of virtual
  * virtual functions must also be defined out-of-line
  
  Slightly reduces binary size for me (~2k on Win, 150k on Linux).
  
  Bug: angleproject:1569
  Change-Id: I073ca3365188caf5f29fb28d9eb207903c1843e6
  Reviewed-on: https://chromium-review.googlesource.com/779959
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/compiler/preprocessor/MacroExpander.h

• //
  // Copyright (c) 2012 The ANGLE 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.
  //
  
  #ifndef COMPILER_PREPROCESSOR_MACROEXPANDER_H_
  #define COMPILER_PREPROCESSOR_MACROEXPANDER_H_
  
  #include <memory>
  #include <vector>
  
  #include "compiler/preprocessor/Lexer.h"
  #include "compiler/preprocessor/Macro.h"
  
  namespace pp
  {
  
  class Diagnostics;
  struct SourceLocation;
  
  class MacroExpander : public Lexer
  {
    public:
      MacroExpander(Lexer *lexer,
                    MacroSet *macroSet,
                    Diagnostics *diagnostics,
                    int allowedMacroExpansionDepth);
      ~MacroExpander() override;
  
      void lex(Token *token) override;
  
    private:
      void getToken(Token *token);
      void ungetToken(const Token &token);
      bool isNextTokenLeftParen();
  
      bool pushMacro(std::shared_ptr<Macro> macro, const Token &identifier);
      void popMacro();
  
      bool expandMacro(const Macro &macro, const Token &identifier, std::vector<Token> *replacements);
  
      typedef std::vector<Token> MacroArg;
      bool collectMacroArgs(const Macro &macro,
                            const Token &identifier,
                            std::vector<MacroArg> *args,
                            SourceLocation *closingParenthesisLocation);
      void replaceMacroParams(const Macro &macro,
                              const std::vector<MacroArg> &args,
                              std::vector<Token> *replacements);
  
      struct MacroContext
      {
          MacroContext();
          ~MacroContext();
          bool empty() const;
          const Token &get();
          void unget();
  
          std::shared_ptr<Macro> macro;
          std::size_t index;
          std::vector<Token> replacements;
      };
  
      Lexer *mLexer;
      MacroSet *mMacroSet;
      Diagnostics *mDiagnostics;
  
      std::unique_ptr<Token> mReserveToken;
      std::vector<MacroContext *> mContextStack;
      size_t mTotalTokensInContexts;
  
      int mAllowedMacroExpansionDepth;
  
      bool mDeferReenablingMacros;
      std::vector<std::shared_ptr<Macro>> mMacrosToReenable;
  
      class ScopedMacroReenabler;
  };
  
  }  // namespace pp
  
  #endif  // COMPILER_PREPROCESSOR_MACROEXPANDER_H_
  

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