1 // 2 // Copyright (C) 2013 LunarG, Inc. 3 // 4 // All rights reserved. 5 // 6 // Redistribution and use in source and binary forms, with or without 7 // modification, are permitted provided that the following conditions 8 // are met: 9 // 10 // Redistributions of source code must retain the above copyright 11 // notice, this list of conditions and the following disclaimer. 12 // 13 // Redistributions in binary form must reproduce the above 14 // copyright notice, this list of conditions and the following 15 // disclaimer in the documentation and/or other materials provided 16 // with the distribution. 17 // 18 // Neither the name of 3Dlabs Inc. Ltd. nor the names of its 19 // contributors may be used to endorse or promote products derived 20 // from this software without specific prior written permission. 21 // 22 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 25 // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 26 // COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 27 // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 28 // BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 29 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 30 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 32 // ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 // POSSIBILITY OF SUCH DAMAGE. 34 // 35 36 // 37 // This holds context specific to the GLSL scanner, which 38 // sits between the preprocessor scanner and parser. 39 // 40 41 #pragma once 42 43 #include "ParseHelper.h" 44 45 namespace glslang { 46 47 class TPpContext; 48 class TPpToken; 49 class TParserToken; 50 51 class TScanContext { 52 public: TScanContext(TParseContextBase & pc)53 explicit TScanContext(TParseContextBase& pc) : 54 parseContext(pc), 55 afterType(false), afterStruct(false), 56 field(false), afterBuffer(false) { } ~TScanContext()57 virtual ~TScanContext() { } 58 59 static void fillInKeywordMap(); 60 static void deleteKeywordMap(); 61 62 int tokenize(TPpContext*, TParserToken&); 63 64 protected: 65 TScanContext(TScanContext&); 66 TScanContext& operator=(TScanContext&); 67 68 int tokenizeIdentifier(); 69 int identifierOrType(); 70 int reservedWord(); 71 int identifierOrReserved(bool reserved); 72 int es30ReservedFromGLSL(int version); 73 int nonreservedKeyword(int esVersion, int nonEsVersion); 74 int precisionKeyword(); 75 int matNxM(); 76 int dMat(); 77 int firstGenerationImage(bool inEs310); 78 int secondGenerationImage(); 79 80 TParseContextBase& parseContext; 81 bool afterType; // true if we've recognized a type, so can only be looking for an identifier 82 bool afterStruct; // true if we've recognized the STRUCT keyword, so can only be looking for an identifier 83 bool field; // true if we're on a field, right after a '.' 84 bool afterBuffer; // true if we've recognized the BUFFER keyword 85 TSourceLoc loc; 86 TParserToken* parserToken; 87 TPpToken* ppToken; 88 89 const char* tokenText; 90 int keyword; 91 }; 92 93 } // end namespace glslang 94