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| 1 /* |
| 2 * Copyright 2016 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 |
| 8 #ifndef SKSL_TOKEN |
| 9 #define SKSL_TOKEN |
| 10 |
| 11 #include "SkSLPosition.h" |
| 12 #include "SkSLUtil.h" |
| 13 |
| 14 namespace SkSL { |
| 15 |
| 16 /** |
| 17 * Represents a lexical analysis token. Token is generally only used during the
parse process, but |
| 18 * Token::Kind is also used to represent operator kinds. |
| 19 */ |
| 20 struct Token { |
| 21 enum Kind { |
| 22 END_OF_FILE, |
| 23 IDENTIFIER, |
| 24 INT_LITERAL, |
| 25 FLOAT_LITERAL, |
| 26 TRUE_LITERAL, |
| 27 FALSE_LITERAL, |
| 28 LPAREN, |
| 29 RPAREN, |
| 30 LBRACE, |
| 31 RBRACE, |
| 32 LBRACKET, |
| 33 RBRACKET, |
| 34 DOT, |
| 35 COMMA, |
| 36 PLUSPLUS, |
| 37 MINUSMINUS, |
| 38 PLUS, |
| 39 MINUS, |
| 40 STAR, |
| 41 SLASH, |
| 42 PERCENT, |
| 43 SHL, |
| 44 SHR, |
| 45 BITWISEOR, |
| 46 BITWISEXOR, |
| 47 BITWISEAND, |
| 48 LOGICALOR, |
| 49 LOGICALXOR, |
| 50 LOGICALAND, |
| 51 NOT, |
| 52 QUESTION, |
| 53 COLON, |
| 54 EQ, |
| 55 EQEQ, |
| 56 NEQ, |
| 57 GT, |
| 58 LT, |
| 59 GTEQ, |
| 60 LTEQ, |
| 61 PLUSEQ, |
| 62 MINUSEQ, |
| 63 STAREQ, |
| 64 SLASHEQ, |
| 65 PERCENTEQ, |
| 66 SHLEQ, |
| 67 SHREQ, |
| 68 BITWISEOREQ, |
| 69 BITWISEXOREQ, |
| 70 BITWISEANDEQ, |
| 71 LOGICALOREQ, |
| 72 LOGICALXOREQ, |
| 73 LOGICALANDEQ, |
| 74 SEMICOLON, |
| 75 IF, |
| 76 ELSE, |
| 77 FOR, |
| 78 WHILE, |
| 79 DO, |
| 80 RETURN, |
| 81 BREAK, |
| 82 CONTINUE, |
| 83 DISCARD, |
| 84 IN, |
| 85 OUT, |
| 86 INOUT, |
| 87 CONST, |
| 88 LOWP, |
| 89 MEDIUMP, |
| 90 HIGHP, |
| 91 UNIFORM, |
| 92 STRUCT, |
| 93 LAYOUT, |
| 94 DIRECTIVE, |
| 95 PRECISION, |
| 96 INVALID_TOKEN |
| 97 }; |
| 98 |
| 99 static std::string OperatorName(Kind kind) { |
| 100 switch (kind) { |
| 101 case Token::PLUS: return "+"; |
| 102 case Token::MINUS: return "-"; |
| 103 case Token::STAR: return "*"; |
| 104 case Token::SLASH: return "/"; |
| 105 case Token::PERCENT: return "%"; |
| 106 case Token::SHL: return "<<"; |
| 107 case Token::SHR: return ">>"; |
| 108 case Token::LOGICALAND: return "&&"; |
| 109 case Token::LOGICALOR: return "||"; |
| 110 case Token::LOGICALXOR: return "^^"; |
| 111 case Token::BITWISEAND: return "&"; |
| 112 case Token::BITWISEOR: return "|"; |
| 113 case Token::BITWISEXOR: return "^"; |
| 114 case Token::EQ: return "="; |
| 115 case Token::EQEQ: return "=="; |
| 116 case Token::NEQ: return "!="; |
| 117 case Token::LT: return "<"; |
| 118 case Token::GT: return ">"; |
| 119 case Token::LTEQ: return "<="; |
| 120 case Token::GTEQ: return ">="; |
| 121 case Token::PLUSEQ: return "+="; |
| 122 case Token::MINUSEQ: return "-="; |
| 123 case Token::STAREQ: return "*="; |
| 124 case Token::SLASHEQ: return "/="; |
| 125 case Token::PERCENTEQ: return "%="; |
| 126 case Token::SHLEQ: return "<<="; |
| 127 case Token::SHREQ: return ">>="; |
| 128 case Token::LOGICALANDEQ: return "&&="; |
| 129 case Token::LOGICALOREQ: return "||="; |
| 130 case Token::LOGICALXOREQ: return "^^="; |
| 131 case Token::BITWISEANDEQ: return "&="; |
| 132 case Token::BITWISEOREQ: return "|="; |
| 133 case Token::BITWISEXOREQ: return "^="; |
| 134 case Token::PLUSPLUS: return "++"; |
| 135 case Token::MINUSMINUS: return "--"; |
| 136 case Token::NOT: return "!"; |
| 137 default: |
| 138 ABORT("unsupported operator: %d\n", kind); |
| 139 } |
| 140 } |
| 141 |
| 142 Token() { |
| 143 } |
| 144 |
| 145 Token(Position position, Kind kind, std::string text) |
| 146 : fPosition(position) |
| 147 , fKind(kind) |
| 148 , fText(std::move(text)) {} |
| 149 |
| 150 Position fPosition; |
| 151 Kind fKind; |
| 152 std::string fText; |
| 153 }; |
| 154 |
| 155 } // namespace |
| 156 #endif |
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Chromium Code Reviews
Issue 1984363002:
initial checkin of SkSL compiler (Closed)
Base URL: https://skia.googlesource.com/skia@master