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gerrit-public.fairphone.software / platform / external / skia / e54d4cefb7864a575c01894b2e5e0df16978c6e6 / . / src / sksl / SkSLToken.h
blob: 76a1df7f665fd7ae3edae20f908991b3c33a3564 [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,
ethannicholasb3058bd2016-07-01 08:22:01 -0700[diff] [blame]99 STRUCT,
100 LAYOUT,
101 DIRECTIVE,
102 PRECISION,
103 INVALID_TOKEN
104 };
105
Greg Daniel792d0f12016-11-20 14:53:35 +0000[diff] [blame]106 static std::string OperatorName(Kind kind) {
ethannicholasb3058bd2016-07-01 08:22:01 -0700[diff] [blame]107 switch (kind) {
Greg Daniel792d0f12016-11-20 14:53:35 +0000[diff] [blame]108 case Token::PLUS: return "+";
109 case Token::MINUS: return "-";
110 case Token::STAR: return "*";
111 case Token::SLASH: return "/";
112 case Token::PERCENT: return "%";
113 case Token::SHL: return "<<";
114 case Token::SHR: return ">>";
115 case Token::LOGICALNOT: return "!";
116 case Token::LOGICALAND: return "&&";
117 case Token::LOGICALOR: return "||";
118 case Token::LOGICALXOR: return "^^";
119 case Token::BITWISENOT: return "~";
120 case Token::BITWISEAND: return "&";
121 case Token::BITWISEOR: return "|";
122 case Token::BITWISEXOR: return "^";
123 case Token::EQ: return "=";
124 case Token::EQEQ: return "==";
125 case Token::NEQ: return "!=";
126 case Token::LT: return "<";
127 case Token::GT: return ">";
128 case Token::LTEQ: return "<=";
129 case Token::GTEQ: return ">=";
130 case Token::PLUSEQ: return "+=";
131 case Token::MINUSEQ: return "-=";
132 case Token::STAREQ: return "*=";
133 case Token::SLASHEQ: return "/=";
134 case Token::PERCENTEQ: return "%=";
135 case Token::SHLEQ: return "<<=";
136 case Token::SHREQ: return ">>=";
137 case Token::LOGICALANDEQ: return "&&=";
138 case Token::LOGICALOREQ: return "||=";
139 case Token::LOGICALXOREQ: return "^^=";
140 case Token::BITWISEANDEQ: return "&=";
141 case Token::BITWISEOREQ: return "|=";
142 case Token::BITWISEXOREQ: return "^=";
143 case Token::PLUSPLUS: return "++";
144 case Token::MINUSMINUS: return "--";
ethannicholasb3058bd2016-07-01 08:22:01 -0700[diff] [blame]145 default:
146 ABORT("unsupported operator: %d\n", kind);
147 }
148 }
149
150 Token() {
151 }
152
Greg Daniel792d0f12016-11-20 14:53:35 +0000[diff] [blame]153 Token(Position position, Kind kind, std::string text)
ethannicholasb3058bd2016-07-01 08:22:01 -0700[diff] [blame]154 : fPosition(position)
155 , fKind(kind)
156 , fText(std::move(text)) {}
157
158 Position fPosition;
159 Kind fKind;
ethannicholas471e8942016-10-28 09:02:46 -0700[diff] [blame]160 // will be the empty string unless the token has variable text content (identifiers, numeric
161 // literals, and directives)
Greg Daniel792d0f12016-11-20 14:53:35 +0000[diff] [blame]162 std::string fText;
ethannicholasb3058bd2016-07-01 08:22:01 -0700[diff] [blame]163};
164
165} // namespace
166#endif