| // |
| // Copyright (c) 2011 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. |
| // |
| |
| #include "Preprocessor.h" |
| |
| #include <sstream> |
| |
| #include "DirectiveParser.h" |
| #include "Macro.h" |
| #include "MacroExpander.h" |
| #include "Token.h" |
| #include "Tokenizer.h" |
| |
| namespace pp |
| { |
| |
| struct PreprocessorImpl |
| { |
| MacroSet macroSet; |
| Tokenizer tokenizer; |
| DirectiveParser directiveParser; |
| MacroExpander macroExpander; |
| |
| PreprocessorImpl(Diagnostics* diagnostics, |
| DirectiveHandler* directiveHandler) : |
| tokenizer(diagnostics), |
| directiveParser(&tokenizer, ¯oSet, diagnostics, directiveHandler), |
| macroExpander(&directiveParser, ¯oSet, diagnostics) |
| { |
| } |
| }; |
| |
| Preprocessor::Preprocessor(Diagnostics* diagnostics, |
| DirectiveHandler* directiveHandler) |
| { |
| mImpl = new PreprocessorImpl(diagnostics, directiveHandler); |
| } |
| |
| Preprocessor::~Preprocessor() |
| { |
| delete mImpl; |
| } |
| |
| bool Preprocessor::init(int count, |
| const char* const string[], |
| const int length[]) |
| { |
| static const int kGLSLVersion = 100; |
| |
| // Add standard pre-defined macros. |
| predefineMacro("__LINE__", 0); |
| predefineMacro("__FILE__", 0); |
| predefineMacro("__VERSION__", kGLSLVersion); |
| predefineMacro("GL_ES", 1); |
| |
| return mImpl->tokenizer.init(count, string, length); |
| } |
| |
| void Preprocessor::predefineMacro(const char* name, int value) |
| { |
| std::stringstream stream; |
| stream << value; |
| |
| Token token; |
| token.type = Token::CONST_INT; |
| token.value = stream.str(); |
| |
| Macro macro; |
| macro.predefined = true; |
| macro.type = Macro::kTypeObj; |
| macro.name = name; |
| macro.replacements.push_back(token); |
| |
| mImpl->macroSet[name] = macro; |
| } |
| |
| void Preprocessor::lex(Token* token) |
| { |
| mImpl->macroExpander.lex(token); |
| } |
| |
| } // namespace pp |
| |