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| 1 /* |
| 2 |
| 3 This file is IGNORED during the build process! |
| 4 |
| 5 As this file is updated so infrequently and flex is not universally pres
ent on build machines, |
| 6 the lex.sksl.c file must be manually regenerated if you make any changes
to this file. Just run: |
| 7 |
| 8 flex sksl.flex |
| 9 |
| 10 */ |
| 11 |
| 12 %option prefix="sksl" |
| 13 %option yylineno |
| 14 %option never-interactive |
| 15 %option nounistd |
| 16 |
| 17 %{ |
| 18 // generated from sksl.flex |
| 19 // NOT AUTOGENERATED DURING THE BUILD, you must manually run flex on sksl.flex t
o regenerate this |
| 20 // file |
| 21 %} |
| 22 |
| 23 DIGIT [0-9] |
| 24 LETTER [a-zA-Z_$] |
| 25 |
| 26 %% |
| 27 |
| 28 {DIGIT}*"."{DIGIT}+([eE][+-]?{DIGIT}+)? { return SkSL::Token::FLOAT_LITERAL; } |
| 29 |
| 30 {DIGIT}+"."{DIGIT}*([eE][+-]?{DIGIT}+)? { return SkSL::Token::FLOAT_LITERAL; } |
| 31 |
| 32 {DIGIT}+([eE][+-]?{DIGIT}+) { return SkSL::Token::FLOAT_LITERAL; } |
| 33 |
| 34 {DIGIT}+ { return SkSL::Token::INT_LITERAL; } |
| 35 |
| 36 true { return SkSL::Token::TRUE_LITERAL; } |
| 37 |
| 38 false { return SkSL::Token::FALSE_LITERAL; } |
| 39 |
| 40 if { return SkSL::Token::IF; } |
| 41 |
| 42 else { return SkSL::Token::ELSE; } |
| 43 |
| 44 for { return SkSL::Token::FOR; } |
| 45 |
| 46 while { return SkSL::Token::WHILE; } |
| 47 |
| 48 do { return SkSL::Token::DO; } |
| 49 |
| 50 break { return SkSL::Token::BREAK; } |
| 51 |
| 52 continue { return SkSL::Token::CONTINUE; } |
| 53 |
| 54 discard { return SkSL::Token::DISCARD; } |
| 55 |
| 56 return { return SkSL::Token::RETURN; } |
| 57 |
| 58 in { return SkSL::Token::IN; } |
| 59 |
| 60 out { return SkSL::Token::OUT; } |
| 61 |
| 62 inout { return SkSL::Token::INOUT; } |
| 63 |
| 64 uniform { return SkSL::Token::UNIFORM; } |
| 65 |
| 66 const { return SkSL::Token::CONST; } |
| 67 |
| 68 lowp { return SkSL::Token::LOWP; } |
| 69 |
| 70 mediump { return SkSL::Token::MEDIUMP; } |
| 71 |
| 72 highp { return SkSL::Token::HIGHP; } |
| 73 |
| 74 struct { return SkSL::Token::STRUCT; } |
| 75 |
| 76 layout { return SkSL::Token::LAYOUT; } |
| 77 |
| 78 precision { return SkSL::Token::PRECISION; } |
| 79 |
| 80 {LETTER}({DIGIT}|{LETTER})* { return SkSL::Token::IDENTIFIER; } |
| 81 |
| 82 "#"{LETTER}({DIGIT}|{LETTER})* { return SkSL::Token::DIRECTIVE; } |
| 83 |
| 84 "(" { return SkSL::Token::LPAREN; } |
| 85 |
| 86 ")" { return SkSL::Token::RPAREN; } |
| 87 |
| 88 "{" { return SkSL::Token::LBRACE; } |
| 89 |
| 90 "}" { return SkSL::Token::RBRACE; } |
| 91 |
| 92 "[" { return SkSL::Token::LBRACKET; } |
| 93 |
| 94 "]" { return SkSL::Token::RBRACKET; } |
| 95 |
| 96 "." { return SkSL::Token::DOT; } |
| 97 |
| 98 "," { return SkSL::Token::COMMA; } |
| 99 |
| 100 "++" { return SkSL::Token::PLUSPLUS; } |
| 101 |
| 102 "--" { return SkSL::Token::MINUSMINUS; } |
| 103 |
| 104 "+" { return SkSL::Token::PLUS; } |
| 105 |
| 106 "-" { return SkSL::Token::MINUS; } |
| 107 |
| 108 "*" { return SkSL::Token::STAR; } |
| 109 |
| 110 "/" { return SkSL::Token::SLASH; } |
| 111 |
| 112 "%" { return SkSL::Token::PERCENT; } |
| 113 |
| 114 "<<" { return SkSL::Token::SHL; } |
| 115 |
| 116 ">>" { return SkSL::Token::SHR; } |
| 117 |
| 118 "|" { return SkSL::Token::BITWISEOR; } |
| 119 |
| 120 "^" { return SkSL::Token::BITWISEXOR; } |
| 121 |
| 122 "&" { return SkSL::Token::BITWISEAND; } |
| 123 |
| 124 "||" { return SkSL::Token::LOGICALOR; } |
| 125 |
| 126 "^^" { return SkSL::Token::LOGICALXOR; } |
| 127 |
| 128 "&&" { return SkSL::Token::LOGICALAND; } |
| 129 |
| 130 "!" { return SkSL::Token::NOT; } |
| 131 |
| 132 "?" { return SkSL::Token::QUESTION; } |
| 133 |
| 134 ":" { return SkSL::Token::COLON; } |
| 135 |
| 136 "=" { return SkSL::Token::EQ; } |
| 137 |
| 138 "==" { return SkSL::Token::EQEQ; } |
| 139 |
| 140 "!=" { return SkSL::Token::NEQ; } |
| 141 |
| 142 ">" { return SkSL::Token::GT; } |
| 143 |
| 144 "<" { return SkSL::Token::LT; } |
| 145 |
| 146 ">=" { return SkSL::Token::GTEQ; } |
| 147 |
| 148 "<=" { return SkSL::Token::LTEQ; } |
| 149 |
| 150 "+=" { return SkSL::Token::PLUSEQ; } |
| 151 |
| 152 "-=" { return SkSL::Token::MINUSEQ; } |
| 153 |
| 154 "*=" { return SkSL::Token::STAREQ; } |
| 155 |
| 156 "/=" { return SkSL::Token::SLASHEQ; } |
| 157 |
| 158 "%=" { return SkSL::Token::PERCENTEQ; } |
| 159 |
| 160 "<<=" { return SkSL::Token::SHLEQ; } |
| 161 |
| 162 ">>=" { return SkSL::Token::SHREQ; } |
| 163 |
| 164 "|=" { return SkSL::Token::BITWISEOREQ; } |
| 165 |
| 166 "^=" { return SkSL::Token::BITWISEXOREQ; } |
| 167 |
| 168 "&=" { return SkSL::Token::BITWISEANDEQ; } |
| 169 |
| 170 "||=" { return SkSL::Token::LOGICALOREQ; } |
| 171 |
| 172 "^^=" { return SkSL::Token::LOGICALXOREQ; } |
| 173 |
| 174 "&&=" { return SkSL::Token::LOGICALANDEQ; } |
| 175 |
| 176 ";" { return SkSL::Token::SEMICOLON; } |
| 177 |
| 178 "//".* /* line comment */ |
| 179 |
| 180 "/*"([^*]|"*"[^/])*"*/" /* block comment */ |
| 181 |
| 182 [ \t\r\n]+ /* whitespace */ |
| 183 |
| 184 . { return SkSL::Token::INVALID_TOKEN; } |
| 185 |
| 186 %% |
| 187 |
| 188 int skslwrap() { |
| 189 return 1; // terminate |
| 190 } |
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