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-rw-r--r--src/3rdparty/angle/src/compiler/preprocessor/new/MacroExpander.h75
1 files changed, 75 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/compiler/preprocessor/new/MacroExpander.h b/src/3rdparty/angle/src/compiler/preprocessor/new/MacroExpander.h
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+++ b/src/3rdparty/angle/src/compiler/preprocessor/new/MacroExpander.h
@@ -0,0 +1,75 @@
+//
+// 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_MACRO_EXPANDER_H_
+#define COMPILER_PREPROCESSOR_MACRO_EXPANDER_H_
+
+#include <cassert>
+#include <memory>
+#include <vector>
+
+#include "Lexer.h"
+#include "Macro.h"
+#include "pp_utils.h"
+
+namespace pp
+{
+
+class Diagnostics;
+
+class MacroExpander : public Lexer
+{
+ public:
+ MacroExpander(Lexer* lexer, MacroSet* macroSet, Diagnostics* diagnostics);
+ virtual ~MacroExpander();
+
+ virtual void lex(Token* token);
+
+ private:
+ PP_DISALLOW_COPY_AND_ASSIGN(MacroExpander);
+
+ void getToken(Token* token);
+ void ungetToken(const Token& token);
+ bool isNextTokenLeftParen();
+
+ bool pushMacro(const 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);
+ void replaceMacroParams(const Macro& macro,
+ const std::vector<MacroArg>& args,
+ std::vector<Token>* replacements);
+
+ struct MacroContext
+ {
+ const Macro* macro;
+ size_t index;
+ std::vector<Token> replacements;
+
+ MacroContext() : macro(0), index(0) { }
+ bool empty() const { return index == replacements.size(); }
+ const Token& get() { return replacements[index++]; }
+ void unget() { assert(index > 0); --index; }
+ };
+
+ Lexer* mLexer;
+ MacroSet* mMacroSet;
+ Diagnostics* mDiagnostics;
+
+ std::auto_ptr<Token> mReserveToken;
+ std::vector<MacroContext*> mContextStack;
+};
+
+} // namespace pp
+#endif // COMPILER_PREPROCESSOR_MACRO_EXPANDER_H_
+