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gerrit-public.fairphone.software / platform / external / skia / f9f451213a3951d8a61568998de2ddbd643f6693 / . / src / sksl / SkSLToken.h
blob: 5c8c2bd2154de208cb2e68850637be8b69b1eb04 [file] [log] [blame]
ethannicholasb3058bd2016-07-01 08:22:01 -0700[diff] [blame]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
14namespace SkSL {
15
ethannicholasf789b382016-08-03 12:43:36 -0700[diff] [blame]16#undef IN
17#undef OUT
18#undef CONST
19
ethannicholasb3058bd2016-07-01 08:22:01 -0700[diff] [blame]20/**
21 * Represents a lexical analysis token. Token is generally only used during the parse process, but
22 * Token::Kind is also used to represent operator kinds.
23 */
24struct Token {
25 enum Kind {
26 END_OF_FILE,
27 IDENTIFIER,
28 INT_LITERAL,
29 FLOAT_LITERAL,
30 TRUE_LITERAL,
31 FALSE_LITERAL,
32 LPAREN,
33 RPAREN,
34 LBRACE,
35 RBRACE,
36 LBRACKET,
37 RBRACKET,
38 DOT,
39 COMMA,
40 PLUSPLUS,
41 MINUSMINUS,
42 PLUS,
43 MINUS,
44 STAR,
45 SLASH,
46 PERCENT,
47 SHL,
48 SHR,
49 BITWISEOR,
50 BITWISEXOR,
51 BITWISEAND,
ethannicholas5961bc92016-10-12 06:39:56 -0700[diff] [blame]52 BITWISENOT,
ethannicholasb3058bd2016-07-01 08:22:01 -0700[diff] [blame]53 LOGICALOR,
54 LOGICALXOR,
55 LOGICALAND,
ethannicholas5961bc92016-10-12 06:39:56 -0700[diff] [blame]56 LOGICALNOT,
ethannicholasb3058bd2016-07-01 08:22:01 -0700[diff] [blame]57 QUESTION,
58 COLON,
59 EQ,
60 EQEQ,
61 NEQ,
62 GT,
63 LT,
64 GTEQ,
65 LTEQ,
66 PLUSEQ,
67 MINUSEQ,
68 STAREQ,
69 SLASHEQ,
70 PERCENTEQ,
71 SHLEQ,
72 SHREQ,
73 BITWISEOREQ,
74 BITWISEXOREQ,
75 BITWISEANDEQ,
76 LOGICALOREQ,
77 LOGICALXOREQ,
78 LOGICALANDEQ,
79 SEMICOLON,
80 IF,
81 ELSE,
82 FOR,
83 WHILE,
84 DO,
85 RETURN,
86 BREAK,
87 CONTINUE,
88 DISCARD,
89 IN,
90 OUT,
91 INOUT,
92 CONST,
93 LOWP,
94 MEDIUMP,
95 HIGHP,
96 UNIFORM,
ethannicholasf789b382016-08-03 12:43:36 -0700[diff] [blame]97 FLAT,
98 NOPERSPECTIVE,
Brian Salomonf9f45122016-11-29 11:59:17 -0500[diff] [blame^]99 READONLY,
100 WRITEONLY,
101 COHERENT,
102 VOLATILE,
103 RESTRICT,
ethannicholasb3058bd2016-07-01 08:22:01 -0700[diff] [blame]104 STRUCT,
105 LAYOUT,
106 DIRECTIVE,
107 PRECISION,
108 INVALID_TOKEN
109 };
110
Ethan Nicholas9e1138d2016-11-21 10:39:35 -0500[diff] [blame]111 static SkString OperatorName(Kind kind) {
ethannicholasb3058bd2016-07-01 08:22:01 -0700[diff] [blame]112 switch (kind) {
Ethan Nicholas9e1138d2016-11-21 10:39:35 -0500[diff] [blame]113 case Token::PLUS: return SkString("+");
114 case Token::MINUS: return SkString("-");
115 case Token::STAR: return SkString("*");
116 case Token::SLASH: return SkString("/");
117 case Token::PERCENT: return SkString("%");
118 case Token::SHL: return SkString("<<");
119 case Token::SHR: return SkString(">>");
120 case Token::LOGICALNOT: return SkString("!");
121 case Token::LOGICALAND: return SkString("&&");
122 case Token::LOGICALOR: return SkString("||");
123 case Token::LOGICALXOR: return SkString("^^");
124 case Token::BITWISENOT: return SkString("~");
125 case Token::BITWISEAND: return SkString("&");
126 case Token::BITWISEOR: return SkString("|");
127 case Token::BITWISEXOR: return SkString("^");
128 case Token::EQ: return SkString("=");
129 case Token::EQEQ: return SkString("==");
130 case Token::NEQ: return SkString("!=");
131 case Token::LT: return SkString("<");
132 case Token::GT: return SkString(">");
133 case Token::LTEQ: return SkString("<=");
134 case Token::GTEQ: return SkString(">=");
135 case Token::PLUSEQ: return SkString("+=");
136 case Token::MINUSEQ: return SkString("-=");
137 case Token::STAREQ: return SkString("*=");
138 case Token::SLASHEQ: return SkString("/=");
139 case Token::PERCENTEQ: return SkString("%=");
140 case Token::SHLEQ: return SkString("<<=");
141 case Token::SHREQ: return SkString(">>=");
142 case Token::LOGICALANDEQ: return SkString("&&=");
143 case Token::LOGICALOREQ: return SkString("||=");
144 case Token::LOGICALXOREQ: return SkString("^^=");
145 case Token::BITWISEANDEQ: return SkString("&=");
146 case Token::BITWISEOREQ: return SkString("|=");
147 case Token::BITWISEXOREQ: return SkString("^=");
148 case Token::PLUSPLUS: return SkString("++");
149 case Token::MINUSMINUS: return SkString("--");
ethannicholasb3058bd2016-07-01 08:22:01 -0700[diff] [blame]150 default:
151 ABORT("unsupported operator: %d\n", kind);
152 }
153 }
154
155 Token() {
156 }
157
Ethan Nicholas9e1138d2016-11-21 10:39:35 -0500[diff] [blame]158 Token(Position position, Kind kind, SkString text)
ethannicholasb3058bd2016-07-01 08:22:01 -0700[diff] [blame]159 : fPosition(position)
160 , fKind(kind)
161 , fText(std::move(text)) {}
162
163 Position fPosition;
164 Kind fKind;
ethannicholas471e8942016-10-28 09:02:46 -0700[diff] [blame]165 // will be the empty string unless the token has variable text content (identifiers, numeric
166 // literals, and directives)
Ethan Nicholas9e1138d2016-11-21 10:39:35 -0500[diff] [blame]167 SkString fText;
ethannicholasb3058bd2016-07-01 08:22:01 -0700[diff] [blame]168};
169
170} // namespace
171#endif