| // |
| // Copyright (C) 2016 Google, Inc. |
| // |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions |
| // are met: |
| // |
| // Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // |
| // Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // |
| // Neither the name of Google, Inc., nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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| // BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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| // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| // ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| // POSSIBILITY OF SUCH DAMAGE. |
| // |
| |
| // |
| // This holds context specific to the HLSL scanner, which |
| // sits between the preprocessor scanner and HLSL parser. |
| // |
| |
| #ifndef HLSLSCANCONTEXT_H_ |
| #define HLSLSCANCONTEXT_H_ |
| |
| #include "../glslang/MachineIndependent/ParseHelper.h" |
| #include "hlslTokens.h" |
| |
| namespace glslang { |
| |
| class TPpContext; |
| class TPpToken; |
| |
| |
| // |
| // Everything needed to fully describe a token. |
| // |
| struct HlslToken { |
| HlslToken() : string(nullptr) { loc.init(); } |
| TSourceLoc loc; // location of token in the source |
| EHlslTokenClass tokenClass; // what kind of token it is |
| union { // what data the token holds |
| glslang::TString *string; // for identifiers |
| int i; // for literals |
| unsigned int u; |
| bool b; |
| double d; |
| }; |
| }; |
| |
| // |
| // The state of scanning and translating raw tokens to slightly richer |
| // semantics, like knowing if an identifier is an existing symbol, or |
| // user-defined type. |
| // |
| class HlslScanContext { |
| public: |
| HlslScanContext(TParseContextBase& parseContext, TPpContext& ppContext) |
| : parseContext(parseContext), ppContext(ppContext) { } |
| virtual ~HlslScanContext() { } |
| |
| static void fillInKeywordMap(); |
| static void deleteKeywordMap(); |
| |
| void tokenize(HlslToken&); |
| glslang::TBuiltInVariable mapSemantic(const char*); |
| |
| protected: |
| HlslScanContext(HlslScanContext&); |
| HlslScanContext& operator=(HlslScanContext&); |
| |
| EHlslTokenClass tokenizeClass(HlslToken&); |
| EHlslTokenClass tokenizeIdentifier(); |
| EHlslTokenClass identifierOrType(); |
| EHlslTokenClass reservedWord(); |
| EHlslTokenClass identifierOrReserved(bool reserved); |
| EHlslTokenClass nonreservedKeyword(int version); |
| |
| TParseContextBase& parseContext; |
| TPpContext& ppContext; |
| TSourceLoc loc; |
| TPpToken* ppToken; |
| HlslToken* parserToken; |
| |
| const char* tokenText; |
| EHlslTokenClass keyword; |
| }; |
| |
| } // end namespace glslang |
| |
| #endif // HLSLSCANCONTEXT_H_ |