vladislavbelov
ffc4a56b9f
Fixes #6846 Differential Revision: https://code.wildfiregames.com/D5185 This was SVN commit r27965.
63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
/* Copyright (C) 2021 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef INCLUDED_PREPROCESSORWRAPPER
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#define INCLUDED_PREPROCESSORWRAPPER
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#include "ps/CStr.h"
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#include "third_party/ogre3d_preprocessor/OgreGLSLPreprocessor.h"
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#include <functional>
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#include <unordered_map>
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class CShaderDefines;
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/**
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* Convenience wrapper around CPreprocessor.
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*/
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class CPreprocessorWrapper
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{
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public:
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using IncludeRetrieverCallback = std::function<bool(const CStr&, CStr& out)>;
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CPreprocessorWrapper();
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CPreprocessorWrapper(const IncludeRetrieverCallback& includeCallback);
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void AddDefine(const char* name, const char* value);
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void AddDefines(const CShaderDefines& defines);
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bool TestConditional(const CStr& expr);
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// Find all #include directives in the input and replace them by
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// by a file content from the directive's argument. Parsing is strict
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// and simple. The directive will be expanded in comments and multiline
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// strings.
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CStr ResolveIncludes(const CStr& source);
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CStr Preprocess(const CStr& input);
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static void PyrogenesisShaderError(int iLine, const char* iError, const Ogre::CPreprocessor::Token* iToken);
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private:
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Ogre::CPreprocessor m_Preprocessor;
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IncludeRetrieverCallback m_IncludeCallback;
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std::unordered_map<CStr, CStr> m_IncludeCache;
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};
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#endif // INCLUDED_PREPROCESSORWRAPPER
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