Scanner.lpp.in

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2015  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU Affero General Public License, Version 3 {{{ */
   6 /*
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 %top{
  23 #if defined(__clang__)
  24 #pragma clang diagnostic push
  25 #pragma clang diagnostic ignored "-Wdeprecated-register"
  26 #pragma clang diagnostic ignored "-Wunused-function"
  27 #pragma clang diagnostic ignored "-Wunused-variable"
  28 #else
  29 #pragma GCC diagnostic push
  30 #pragma GCC diagnostic ignored "-Wsign-compare"
  31 #pragma GCC diagnostic ignored "-Wunused-function"
  32 #pragma GCC diagnostic ignored "-Wunused-variable"
  33 #endif
  34 }
  35
  36 %{
  37
  38 #define YYLTYPE CYLocation
  39 #include "Parser.hpp"
  40 typedef cy::parser::token tk;
  41
  42 #include "Highlight.hpp"
  43
  44 #define YY_EXTRA_TYPE CYDriver *
  45
  46 #define F(value, highlight) do { \
  47     yyextra->newline_ = yyextra->last_; \
  48     yyextra->last_ = false; \
  49     yyextra->next_ = false; \
  50     BEGIN(yyextra->template_.top() ? DivOrTemplateTail : Div); \
  51     yylval->highlight_ = highlight; \
  52     return value; \
  53 } while (false)
  54
  55 #define P yyextra->pool_
  56 #define A new(P)
  57 #define Y P.strmemdup(yytext, yyleng)
  58
  59 #define I(type, Type, value, highlight) do { \
  60     yylval->semantic_.type ## _ = A CY ## Type; \
  61     F(value, highlight); \
  62 } while (false)
  63
  64 #define N \
  65     if (yyextra->last_ && yyextra->next_) { \
  66         yyextra->last_ = false; \
  67         F(tk::NewLine, hi::Nothing); \
  68     }
  69
  70 #define V(more) { \
  71     if (const char *nl = reinterpret_cast<const char *>(memchr(yytext, '\n', yyleng))) { \
  72         unsigned lines(0); \
  73         size_t left; \
  74         do { \
  75             ++lines; \
  76             left = yyleng - (nl - yytext) - 1; \
  77             nl = reinterpret_cast<const char *>(memchr(nl + 1, '\n', left)); \
  78         } while (nl != NULL); \
  79         yylloc->step(); \
  80         yylloc->end.lines(lines); \
  81         yylloc->end.columns(left); \
  82         more \
  83     } else L \
  84 }
  85
  86 #define R yylloc->end.columns(yyleng);
  87 #define L yylloc->step(); R
  88
  89 #define H(value, highlight) do { \
  90     if (yyextra->highlight_) \
  91         F(value, highlight); \
  92 } while (false)
  93
  94 #define M \
  95     H(tk::Comment, hi::Comment);
  96
  97 #define E(message) { \
  98     CYDriver::Error error; \
  99     error.location_ = *yylloc; \
 100     error.message_ = "syntax error, " message; \
 101     yyextra->errors_.push_back(error); \
 102     yyterminate(); \
 103 }
 104
 105 int X(char c) {
 106     if (c >= '0' && c <= '9')
 107         return c - '0';
 108     if (c >= 'a' && c <= 'f')
 109         return c - 'a' + 10;
 110     if (c >= 'A' && c <= 'F')
 111         return c - 'A' + 10;
 112     return -1;
 113 }
 114
 115 template <typename Type_>
 116 static void U(Type_ &local, unsigned point) {
 117     if (false) {
 118     } else if (point < 0x000080) {
 119         *local++ = point;
 120     } else if (point < 0x000800) {
 121         *local++ = 0xc0 | point >> 0x06 & 0x1f;
 122         goto one;
 123     } else if (point < 0x010000) {
 124         *local++ = 0xe0 | point >> 0x0c & 0x0f;
 125         goto two;
 126     } else if (point < 0x110000) {
 127         *local++ = 0xf0 | point >> 0x12 & 0x07;
 128         *local++ = 0x80 | point >> 0x0c & 0x3f;
 129       two:
 130         *local++ = 0x80 | point >> 0x06 & 0x3f;
 131       one:
 132         *local++ = 0x80 | point >> 0x00 & 0x3f;
 133     } else _assert(false);
 134 }
 135
 136 static void U(char *&local, const char *text, yy_size_t &i) {
 137     unsigned point;
 138
 139     char next(text[++i]);
 140     if (next != '{') {
 141         point = X(text[i + 0]) << 12 | X(text[i + 1]) << 8 | X(text[i + 2]) << 4 | X(text[i + 3]);
 142         i += 3;
 143     } else {
 144         point = 0;
 145         for (;;) {
 146             next = text[++i];
 147             if (next == '}')
 148                 break;
 149             point = (point << 4) | X(next);
 150         }
 151     }
 152
 153     U(local, point);
 154 }
 155
 156 #define CYLexBufferPoint(point) do { \
 157     std::back_insert_iterator<std::vector<char> > inserter(yyextra->buffer_); \
 158     U(inserter, point); \
 159 } while (false)
 160
 161 #define CYLexBufferUnit(value) do { \
 162     yyextra->buffer_.push_back(value); \
 163 } while (false)
 164
 165 #define CYLexBufferUnits(data, size) do { \
 166     yyextra->buffer_.insert(yyextra->buffer_.end(), data, data + size); \
 167 } while (false)
 168
 169 #define CYLexBufferStart(condition) do { \
 170     yyextra->buffer_.clear(); \
 171     yy_push_state(condition, yyscanner); \
 172 } while (false)
 173
 174 #define CYLexBufferEnd(type, Type, value, highlight) do { \
 175     yy_pop_state(yyscanner); \
 176     I(type, Type(P.strmemdup(yyextra->buffer_.data(), yyextra->buffer_.size()), yyextra->buffer_.size()), value, highlight); \
 177 } while (false)
 178
 179 #define YY_INPUT(data, value, size) { \
 180     if (yyextra->data_.eof()) \
 181         value = YY_NULL; \
 182     else { \
 183         yyextra->data_.read(data, size); \
 184         size_t copy(yyextra->data_.gcount()); \
 185         value = copy == 0 ? YY_NULL : copy; \
 186     } \
 187 }
 188
 189 %}
 190
 191 %option prefix="cy"
 192 %option bison-bridge
 193 %option bison-locations
 194 %option nodefault
 195 %option noyywrap
 196 %option noyylineno
 197 %option nounput
 198 %option nounistd
 199 %option 8bit
 200 %option backup
 201 %option batch
 202 %option never-interactive
 203 %option pointer
 204 %option reentrant
 205 %option stack
 206
 207 U1 [\x00-\x7f]
 208 U0 [\x80-\xbf]
 209 U2 [\xc2-\xdf]
 210 U3 [\xe0-\xef]
 211 U4 [\xf0-\xf4]
 212 UN [\xc0-\xc1\xf5-\xff]
 213
 214 HexDigit [0-9a-fA-F]
 215 LineTerminatorSequence \r?\n|\r|\xe2\x80[\xa8\xa9]
 216 WhiteSpace [\x09\x0b\x0c\x20]|\xc2\xa0|\xef\xbb\xbf
 217 UnicodeEscape \\u({HexDigit}{4}|\{{HexDigit}+\})
 218
 219 @include NotLineTerminator.l
 220 NoneTerminatorCharacter [^\r\n\x80-\xff]|{NotLineTerminator}
 221 RegExCharacter [^/[\\]{-}[\r\n\x80-\xff]|{NotLineTerminator}
 222 RegClsCharacter [^]\\]{-}[\r\n\x80-\xff]|{NotLineTerminator}
 223 CommentCharacter [^*/]{-}[\r\n\x80-\xff]|{NotLineTerminator}
 224 SingleCharacter [^'\\]{-}[\r\n\x80-\xff]|{NotLineTerminator}
 225 DoubleCharacter [^"\\]{-}[\r\n\x80-\xff]|{NotLineTerminator}
 226 PlateCharacter [^$`\\]{-}[\r\n\x80-\xff]|{NotLineTerminator}
 227
 228 @include UnicodeIDStart.l
 229 @include UnicodeIDContinue.l
 230 IdentifierMore [$_]
 231
 232 UnicodeStart {IdentifierMore}|{UnicodeIDStart}
 233 UnicodePart {IdentifierMore}|\xe2\x80[\x8c\x8d]|{UnicodeIDContinue}
 234 UnicodeFail {U2}|{U3}|{U3}{U0}|{U4}|{U4}{U0}|{U4}{U0}{U0}|{UN}|{U0}
 235 UnicodeScrap {UnicodePart}*{UnicodeFail}?
 236
 237 IdentifierStart {UnicodeStart}|{UnicodeEscape}
 238 IdentifierPart {UnicodePart}|{UnicodeEscape}
 239 IdentifierFail {UnicodeFail}|\\(u({HexDigit}{0,3}|\{{HexDigit}*))?
 240 IdentifierScrap {IdentifierPart}*{IdentifierFail}?
 241
 242 RegularExpressionBackslashSequence \\{NoneTerminatorCharacter}
 243 RegularExpressionClassChars ({RegClsCharacter}|{RegularExpressionBackslashSequence})*
 244
 245 @begin E4X
 246 XMLNameStart [a-zA-Z_:]
 247 XMLNamePart [a-zA-Z0-9.-_:]
 248 XMLName {XMLNameStart}{XMLNamePart}*
 249 @end
 250
 251 %x RegularExpression
 252 %x MultiLine
 253
 254 %x LegacySingleString
 255 %x LegacyDoubleString
 256
 257 %x StrictSingleString
 258 %x StrictDoubleString
 259 %x StrictAccentString
 260
 261 %s Div
 262 %s DivOrTemplateTail
 263 %s RegExp
 264 %s RegExpOrTemplateTail
 265
 266 @begin E4X
 267 %x XMLContent
 268 %x XMLTag
 269 @end
 270
 271 %%
 272
 273     /* RegEx {{{ */
 274 <RegExp,RegExpOrTemplateTail>\/ L CYLexBufferStart(RegularExpression); CYLexBufferUnit('/');
 275
 276 <RegularExpression>{
 277     \/{UnicodePart}* R CYLexBufferUnits(yytext, yyleng); CYLexBufferEnd(literal, RegEx, tk::RegularExpressionLiteral, hi::Constant);
 278     \/{UnicodePart}*{UnicodeFail} R E("invalid flags")
 279
 280     {RegExCharacter}+ R CYLexBufferUnits(yytext, yyleng);
 281     {RegExCharacter}*{UnicodeFail} R E("invalid character");
 282
 283     {RegularExpressionBackslashSequence} R CYLexBufferUnits(yytext, yyleng);
 284     \\{UnicodeFail}? R E("invalid escape")
 285
 286     "["{RegularExpressionClassChars}"]" R CYLexBufferUnits(yytext, yyleng);
 287     "["{RegularExpressionClassChars}\\? R E("invalid class");
 288     "["{RegularExpressionClassChars}\\?{UnicodeFail} R E("invalid character");
 289     "["{RegularExpressionClassChars}\\?{LineTerminatorSequence} R E("invalid newline");
 290
 291     (\\|{RegExCharacter}+)?{LineTerminatorSequence} R E("invalid newline");
 292     <<EOF>> R E("unterminated regex")
 293 }
 294     /* }}} */
 295     /* Comment {{{ */
 296 #![^\n]* L M
 297 \/\/[^\n]* L M
 298
 299 \/\* L yy_push_state(MultiLine, yyscanner);
 300
 301 <MultiLine>{
 302     \**\*\/ R yy_pop_state(yyscanner); M N
 303     \**{LineTerminatorSequence} yylloc->end.lines(); yyextra->last_ = true;
 304     \**{CommentCharacter}|\/ R
 305     \**({UnicodeFail}|\*) R E("invalid comment");
 306     <<EOF>> R E("invalid comment")
 307 }
 308     /* }}} */
 309     /* Element {{{ */
 310 @begin E4X
 311 <RegExp>"<>"      L F(tk::LeftRight, hi::Structure);
 312 <XMLContent>"</>" L F(tk::LeftSlashRight, hi::Structure);
 313
 314 <RegExp,XMLContent>\<!\[CDATA\[(\n|[^[]|\[[^[]|\[\[[^>])*]]> V() F(tk::XMLCDATA, hi::Constant);
 315 <RegExp,XMLContent>\<!--(\n|[^-]|-[^-])*--> V() F(tk::XMLComment, hi::Comment);
 316 <RegExp,XMLContent>\<?(\n|[^?]|\?[^>])*?> V() F(tk::XMLPI, hi::Meta);
 317
 318 <XMLTag>"="  L F(tk::Equal, hi::Structure);
 319 <XMLTag>">"  L F(tk::Right, hi::Structure);
 320 <XMLTag>"/>" L F(tk::SlashRight, hi::Structure);
 321 <XMLTag>"{"  L F(tk::OpenBrace, hi::Structure);
 322
 323 <XMLTag>\"(\n|[^"])*\"|'(\n|[^'])*' V() F(tk::XMLAttributeValue, hi::Constant);
 324 <XMLTag>{XMLName} L F(tk::XMLName, hi::Identifier);
 325 <XMLTag>[ \t\r\n] V() F(tk::XMLWhitespace, hi::Nothing);
 326
 327 <XMLContent>"{"  L F(tk::OpenBrace, hi::Structure);
 328 <XMLContent>"<"  L F(tk::Left, hi::Structure);
 329 <XMLContent>"</" L F(tk::LeftSlash, hi::Structure);
 330 @end
 331     /* }}} */
 332     /* Operator {{{ */
 333 "..."  L F(tk::PeriodPeriodPeriod, hi::Meta);
 334 ".."   L E("invalid operator")
 335
 336 @begin E4X
 337 "::"   L F(tk::ColonColon, hi::Operator);
 338 ".."   L F(tk::PeriodPeriod, hi::Operator);
 339 @end
 340
 341 @begin E4X ObjectiveC
 342 "@"    L F(tk::At, hi::Operator);
 343 "#"    L F(tk::Pound, hi::Operator);
 344 @end
 345
 346 "&"    L F(tk::Ampersand, hi::Operator);
 347 "&&"   L F(tk::AmpersandAmpersand, hi::Operator);
 348 "&="   L F(tk::AmpersandEqual, hi::Operator);
 349 "^"    L F(tk::Carrot, hi::Operator);
 350 "^="   L F(tk::CarrotEqual, hi::Operator);
 351 "="    L F(tk::Equal, hi::Operator);
 352 "=="   L F(tk::EqualEqual, hi::Operator);
 353 "==="  L F(tk::EqualEqualEqual, hi::Operator);
 354 "=>"   L F(yyextra->newline_ ? tk::EqualRight_ : tk::EqualRight, hi::Operator);
 355 "!"    L F(tk::Exclamation, hi::Operator);
 356 "!="   L F(tk::ExclamationEqual, hi::Operator);
 357 "!=="  L F(tk::ExclamationEqualEqual, hi::Operator);
 358 "-"    L F(tk::Hyphen, hi::Operator);
 359 "-="   L F(tk::HyphenEqual, hi::Operator);
 360 "--"   L F(yyextra->newline_ ? tk::HyphenHyphen_ : tk::HyphenHyphen, hi::Operator);
 361 "->"   L F(tk::HyphenRight, hi::Operator);
 362 "<"    L F(tk::Left, hi::Operator);
 363 "<="   L F(tk::LeftEqual, hi::Operator);
 364 "<<"   L F(tk::LeftLeft, hi::Operator);
 365 "<<="  L F(tk::LeftLeftEqual, hi::Operator);
 366 "%"    L F(tk::Percent, hi::Operator);
 367 "%="   L F(tk::PercentEqual, hi::Operator);
 368 "."    L F(tk::Period, hi::Operator);
 369 "|"    L F(tk::Pipe, hi::Operator);
 370 "|="   L F(tk::PipeEqual, hi::Operator);
 371 "||"   L F(tk::PipePipe, hi::Operator);
 372 "+"    L F(tk::Plus, hi::Operator);
 373 "+="   L F(tk::PlusEqual, hi::Operator);
 374 "++"   L F(yyextra->newline_ ? tk::PlusPlus_ : tk::PlusPlus, hi::Operator);
 375 ">"    L F(tk::Right, hi::Operator);
 376 ">="   L F(tk::RightEqual, hi::Operator);
 377 ">>"   L F(tk::RightRight, hi::Operator);
 378 ">>="  L F(tk::RightRightEqual, hi::Operator);
 379 ">>>"  L F(tk::RightRightRight, hi::Operator);
 380 ">>>=" L F(tk::RightRightRightEqual, hi::Operator);
 381 "*"    L F(tk::Star, hi::Operator);
 382 "*="   L F(tk::StarEqual, hi::Operator);
 383 "~"    L F(tk::Tilde, hi::Operator);
 384
 385 <Div,DivOrTemplateTail>"/"  L F(tk::Slash, hi::Operator);
 386 <Div,DivOrTemplateTail>"/=" L F(tk::SlashEqual, hi::Operator);
 387
 388 ":"    L F(tk::Colon, hi::Structure);
 389 ","    L F(tk::Comma, hi::Structure);
 390 "?"    L F(tk::Question, hi::Structure);
 391 ";"    L F(tk::SemiColon, hi::Structure);
 392
 393 "("    L F(tk::OpenParen, hi::Structure);
 394 ")"    L F(tk::CloseParen, hi::Structure);
 395
 396 "{"    L yyextra->template_.push(false); F(yyextra->newline_ ? tk::OpenBrace_ : tk::OpenBrace, hi::Structure);
 397 <Div,RegExp>"}" L yyextra->template_.pop(); F(tk::CloseBrace, hi::Structure);
 398
 399 "["    L F(tk::OpenBracket, hi::Structure);
 400 "]"    L F(tk::CloseBracket, hi::Structure);
 401     /* }}} */
 402     /* Keyword {{{ */
 403 "@error"          L F(tk::At_error_, hi::Error);
 404
 405 @begin Java
 406 "@class"          L F(tk::At_class_, hi::Meta);
 407 @end
 408
 409 @begin C
 410 "@encode"         L F(tk::At_encode_, hi::Meta);
 411 @end
 412
 413 @begin ObjectiveC
 414 "@end"            L F(tk::At_end_, hi::Meta);
 415 "@false"          L F(tk::At_false_, hi::Constant);
 416 "@implementation" L F(tk::At_implementation_, hi::Meta);
 417 "@import"         L F(tk::At_import_, hi::Special);
 418 "@NO"             L F(tk::At_NO_, hi::Constant);
 419 "@null"           L F(tk::At_null_, hi::Constant);
 420 "@selector"       L F(tk::At_selector_, hi::Meta);
 421 "@true"           L F(tk::At_true_, hi::Constant);
 422 "@YES"            L F(tk::At_YES_, hi::Constant);
 423 @end
 424
 425 @({UnicodeStart}{UnicodeScrap}|{UnicodeFail}) L E("invalid keyword")
 426     /* }}} */
 427     /* Highlight {{{ */
 428 "undefined"       L F(tk::_undefined_, hi::Operator);
 429
 430 @begin ObjectiveC
 431 "bool"            L F(tk::_bool_, hi::Type);
 432 "BOOL"            L F(tk::_BOOL_, hi::Type);
 433 "id"              L F(tk::_id_, hi::Type);
 434 "nil"             L F(tk::_nil_, hi::Constant);
 435 "NULL"            L F(tk::_NULL_, hi::Constant);
 436 "SEL"             L F(tk::_SEL_, hi::Type);
 437 @end
 438     /* }}} */
 439     /* Reserved {{{ */
 440 "abstract"        L /*FII*/ F(tk::_abstract_, hi::Meta);
 441 "await"           L /*II?*/ F(tk::_await_, hi::Meta);
 442 "boolean"         L /*FII*/ F(tk::_boolean_, hi::Type);
 443 "break"           L /*KKK*/ F(tk::_break_, hi::Control);
 444 "byte"            L /*FII*/ F(tk::_byte_, hi::Type);
 445 "case"            L /*KKK*/ F(tk::_case_, hi::Control);
 446 "catch"           L /*KKK*/ F(tk::_catch_, hi::Control);
 447 "char"            L /*FII*/ F(tk::_char_, hi::Type);
 448 "class"           L /*FFK*/ F(tk::_class_, hi::Meta);
 449 "const"           L /*FFK*/ F(tk::_const_, hi::Meta);
 450 "continue"        L /*KKK*/ F(tk::_continue_, hi::Control);
 451 "debugger"        L /*FKK*/ F(tk::_debugger_, hi::Meta);
 452 "default"         L /*KKK*/ F(tk::_default_, hi::Control);
 453 "delete"          L /*KKK*/ F(tk::_delete_, hi::Operator);
 454 "do"              L /*KKK*/ F(tk::_do_, hi::Control);
 455 "double"          L /*FII*/ F(tk::_double_, hi::Type);
 456 "else"            L /*KKK*/ F(tk::_else_, hi::Control);
 457 "enum"            L /*FFF*/ F(tk::_enum_, hi::Meta);
 458 "export"          L /*FFK*/ F(tk::_export_, hi::Meta);
 459 "extends"         L /*FFK*/ F(tk::_extends_, hi::Meta);
 460 "false"           L /*LLL*/ F(tk::_false_, hi::Constant);
 461 "final"           L /*FII*/ F(tk::_final_, hi::Meta);
 462 "finally"         L /*KKK*/ F(tk::_finally_, hi::Control);
 463 "float"           L /*FII*/ F(tk::_float_, hi::Type);
 464 "for"             L /*KKK*/ F(tk::_for_, hi::Control);
 465 "from"            L /*III*/ F(tk::_from_, hi::Meta);
 466 "function"        L /*KKK*/ F(tk::_function_, hi::Meta);
 467 "goto"            L /*FII*/ F(tk::_goto_, hi::Control);
 468 "get"             L /*III*/ F(tk::_get_, hi::Meta);
 469 "if"              L /*KKK*/ F(tk::_if_, hi::Control);
 470 "implements"      L /*FSS*/ F(tk::_implements_, hi::Meta);
 471 "import"          L /*FFK*/ F(tk::_import_, hi::Meta);
 472 "in"              L /*KKK*/ F(yyextra->in_.top() ? tk::_in__ : tk::_in_, hi::Operator);
 473 "instanceof"      L /*KKK*/ F(tk::_instanceof_, hi::Operator);
 474 "int"             L /*FII*/ F(tk::_int_, hi::Type);
 475 "interface"       L /*FSS*/ F(tk::_interface_, hi::Meta);
 476 "let"             L /*IS?*/ F(tk::_let_, hi::Meta);
 477 "long"            L /*FII*/ F(tk::_long_, hi::Type);
 478 "native"          L /*FII*/ F(tk::_native_, hi::Meta);
 479 "new"             L /*KKK*/ F(tk::_new_, hi::Operator);
 480 "null"            L /*LLL*/ F(tk::_null_, hi::Constant);
 481 "package"         L /*FSS*/ F(tk::_package_, hi::Meta);
 482 "private"         L /*FSS*/ F(tk::_private_, hi::Meta);
 483 "protected"       L /*FSS*/ F(tk::_protected_, hi::Meta);
 484 "public"          L /*FSS*/ F(tk::_public_, hi::Meta);
 485 "return"          L /*KKK*/ F(yyextra->return_.top() ? tk::_return__ : tk::_return_, hi::Control);
 486 "set"             L /*III*/ F(tk::_set_, hi::Meta);
 487 "short"           L /*FII*/ F(tk::_short_, hi::Type);
 488 "static"          L /*FS?*/ F(tk::_static_, hi::Meta);
 489 "super"           L /*FFK*/ F(tk::_super_, hi::Constant);
 490 "switch"          L /*KKK*/ F(tk::_switch_, hi::Control);
 491 "synchronized"    L /*FII*/ F(tk::_synchronized_, hi::Meta);
 492 "this"            L /*KKK*/ F(tk::_this_, hi::Constant);
 493 "throw"           L /*KKK*/ F(tk::_throw_, hi::Control);
 494 "throws"          L /*FII*/ F(tk::_throws_, hi::Meta);
 495 "transient"       L /*FII*/ F(tk::_transient_, hi::Meta);
 496 "true"            L /*LLL*/ F(tk::_true_, hi::Constant);
 497 "try"             L /*KKK*/ F(tk::_try_, hi::Control);
 498 "typeof"          L /*KKK*/ F(tk::_typeof_, hi::Operator);
 499 "var"             L /*KKK*/ F(tk::_var_, hi::Meta);
 500 "void"            L /*KKK*/ F(tk::_void_, hi::Operator);
 501 "volatile"        L /*FII*/ F(tk::_volatile_, hi::Meta);
 502 "while"           L /*KKK*/ F(tk::_while_, hi::Control);
 503 "with"            L /*KKK*/ F(tk::_with_, hi::Control);
 504 "yield"           L /*IS?*/ F(yyextra->yield_.top() ? tk::_yield__ : tk::_yield_, hi::Control);
 505
 506 "auto"            L F(tk::_auto_, hi::Meta);
 507 "each"            L F(tk::_each_, hi::Control);
 508 "of"              L F(tk::_of_, hi::Operator);
 509
 510 @begin C
 511 "extern"          L F(tk::_extern_, hi::Type);
 512 "signed"          L F(tk::_signed_, hi::Type);
 513 "typedef"         L F(tk::_typedef_, hi::Meta);
 514 "unsigned"        L F(tk::_unsigned_, hi::Type);
 515 @end
 516
 517 @begin ObjectiveC
 518 "NO"              L F(tk::_NO_, hi::Constant);
 519 "YES"             L F(tk::_YES_, hi::Constant);
 520 @end
 521
 522 @begin E4X
 523 "namespace"       L F(tk::_namespace_, hi::Meta);
 524 "xml"             L F(tk::_xml_, hi::Meta);
 525 @end
 526     /* }}} */
 527     /* Identifier {{{ */
 528 {UnicodeStart}{UnicodePart}* L I(identifier, Identifier(Y), tk::Identifier_, hi::Identifier);
 529
 530 {IdentifierStart}{IdentifierPart}* L {
 531     char *value(A char[yyleng + 1]);
 532     char *local(value);
 533
 534     for (yy_size_t i(0), e(yyleng); i != e; ++i) {
 535         char next(yytext[i]);
 536         if (next != '\\')
 537             *local++ = next;
 538         else
 539             U(local, yytext, ++i);
 540     }
 541
 542     *local = '\0';
 543     I(identifier, Identifier(value), tk::Identifier_, hi::Identifier);
 544 }
 545
 546 ({IdentifierStart}{IdentifierPart}*)?{IdentifierFail} L E("invalid identifier")
 547     /* }}} */
 548     /* Number {{{ */
 549 0[0-7]+ L I(number, Number(strtoull(yytext + 1, NULL, 8)), tk::NumericLiteral, hi::Constant);
 550 0[0-9]+ L I(number, Number(strtoull(yytext + 1, NULL, 10)), tk::NumericLiteral, hi::Constant);
 551
 552 0[xX][0-9a-fA-F]+ L I(number, Number(strtoull(yytext + 2, NULL, 16)), tk::NumericLiteral, hi::Constant);
 553 0[oO][0-7]+ L I(number, Number(strtoull(yytext + 2, NULL, 8)), tk::NumericLiteral, hi::Constant);
 554 0[bB][0-1]+ L I(number, Number(strtoull(yytext + 2, NULL, 2)), tk::NumericLiteral, hi::Constant);
 555
 556 (\.[0-9]+|(0|[1-9][0-9]*)(\.[0-9]*)?)([eE][+-]?[0-9]+)? L I(number, Number(strtod(yytext, NULL)), tk::NumericLiteral, hi::Constant);
 557 (\.[0-9]+|(0|[1-9][0-9]*)(\.[0-9]*)?)[eE][+-]?{IdentifierScrap} L E("invalid exponent")
 558 (\.?[0-9]|(0|[1-9][0-9]*)\.){IdentifierScrap} L E("invalid number")
 559     /* }}} */
 560     /* String {{{ */
 561 \' L CYLexBufferStart(LegacySingleString);
 562 <LegacySingleString,StrictSingleString>{
 563     \' R CYLexBufferEnd(string, String, tk::StringLiteral, hi::Constant);
 564     {SingleCharacter}+ R CYLexBufferUnits(yytext, yyleng);
 565     {SingleCharacter}*{UnicodeFail} R E("invalid character");
 566     {LineTerminatorSequence} R E("invalid newline");
 567 }
 568
 569 \" L CYLexBufferStart(LegacyDoubleString);
 570 <LegacyDoubleString,StrictDoubleString>{
 571     \" R CYLexBufferEnd(string, String, tk::StringLiteral, hi::Constant);
 572     {DoubleCharacter}+ R CYLexBufferUnits(yytext, yyleng);
 573     {DoubleCharacter}*{UnicodeFail} R E("invalid character");
 574     {LineTerminatorSequence} R E("invalid newline");
 575 }
 576     /* }}} */
 577     /* Template {{{ */
 578 "`" L yyextra->tail_ = false; CYLexBufferStart(StrictAccentString);
 579 <DivOrTemplateTail,RegExpOrTemplateTail>"}" L yyextra->tail_ = true; yyextra->template_.pop(); CYLexBufferStart(StrictAccentString);
 580
 581 <StrictAccentString>{
 582     "`" R CYLexBufferEnd(string, String, yyextra->tail_ ? tk::TemplateTail : tk::NoSubstitutionTemplate, hi::Constant);
 583     "${" R yyextra->template_.push(true); CYLexBufferEnd(string, String, yyextra->tail_ ? tk::TemplateMiddle : tk::TemplateHead, hi::Constant);
 584
 585     "$" R CYLexBufferUnit('$');
 586
 587     {PlateCharacter}+ R CYLexBufferUnits(yytext, yyleng);
 588     {PlateCharacter}*{UnicodeFail} R E("invalid character");
 589     {LineTerminatorSequence} R E("invalid newline");
 590 }
 591     /* }}} */
 592     /* Escapes {{{ */
 593 <LegacySingleString,LegacyDoubleString>{
 594     \\[0-3][0-7][0-7] R CYLexBufferPoint(X(yytext[1]) << 6 | X(yytext[2]) << 3 | X(yytext[3]));
 595     \\[0-7][0-7] R CYLexBufferUnit(X(yytext[1]) << 3 | X(yytext[2]));
 596     \\[0-7] R CYLexBufferUnit(X(yytext[1]));
 597 }
 598
 599 <StrictSingleString,StrictDoubleString,StrictAccentString>{
 600     \\0[0-7] R E("legacy escape");
 601     \\0 R CYLexBufferUnit('\0');
 602 }
 603
 604 <LegacySingleString,LegacyDoubleString,StrictSingleString,StrictDoubleString,StrictAccentString>{
 605     \\b R CYLexBufferUnit('\b');
 606     \\f R CYLexBufferUnit('\f');
 607     \\n R CYLexBufferUnit('\n');
 608     \\r R CYLexBufferUnit('\r');
 609     \\t R CYLexBufferUnit('\t');
 610     \\v R CYLexBufferUnit('\v');
 611
 612     \\x{HexDigit}{2} R CYLexBufferPoint(X(yytext[2]) << 4 | X(yytext[3]));
 613
 614     \\u{HexDigit}{4} R CYLexBufferPoint(X(yytext[2]) << 12 | X(yytext[3]) << 8 | X(yytext[4]) << 4 | X(yytext[5]));
 615
 616     \\u\{{HexDigit}+\} R {
 617         unsigned point(0);
 618         for (yy_size_t i(3); i != yyleng - 1; ++i)
 619             point = point << 4 | X(yytext[i]);
 620         CYLexBufferPoint(point);
 621     }
 622
 623     \\{LineTerminatorSequence} yylloc->end.lines();
 624     \\(.|{NotLineTerminator}) R CYLexBufferUnits(yytext + 1, yyleng - 1);
 625
 626     \\(x{HexDigit}{0,1}|u({HexDigit}{0,3}|\{{HexDigit}*)|{UnicodeFail})? R E("invalid escape");
 627     <<EOF>> R E("invalid string");
 628 }
 629     /* }}} */
 630
 631 {LineTerminatorSequence} yylloc->step(); yylloc->end.lines(); yyextra->last_ = true; N
 632 {WhiteSpace} L
 633
 634 <<EOF>> if (yyextra->auto_) { yyextra->auto_ = false; F(tk::AutoComplete, hi::Nothing); } L yyterminate();
 635
 636 . L E("invalid character")
 637
 638 %%
 639
 640 void CYDriver::ScannerInit() {
 641     cylex_init(&scanner_);
 642     cyset_extra(this, scanner_);
 643 }
 644
 645 void CYDriver::ScannerDestroy() {
 646     cylex_destroy(scanner_);
 647 }
 648
 649 void CYDriver::SetCondition(Condition condition) {
 650     struct yyguts_t *yyg(reinterpret_cast<struct yyguts_t *>(scanner_));
 651
 652     switch (condition) {
 653         case RegExpCondition:
 654             BEGIN(template_.top() ? RegExpOrTemplateTail : RegExp);
 655             break;
 656 @begin E4X
 657         case XMLContentCondition:
 658             BEGIN(XMLContent);
 659             break;
 660         case XMLTagCondition:
 661             BEGIN(XMLTag);
 662             break;
 663 @end
 664         default:
 665             _assert(false);
 666     }
 667 }
 668
 669 void CYDriver::PushCondition(Condition condition) {
 670     switch (condition) {
 671         case RegExpCondition:
 672             yy_push_state(RegExp, scanner_);
 673             break;
 674 @begin E4X
 675         case XMLContentCondition:
 676             yy_push_state(XMLContent, scanner_);
 677             break;
 678         case XMLTagCondition:
 679             yy_push_state(XMLTag, scanner_);
 680             break;
 681 @end
 682         default:
 683             _assert(false);
 684     }
 685 }
 686
 687 void CYDriver::PopCondition() {
 688     yy_pop_state(scanner_);
 689 }
 690
 691 bool CYLexerHighlight(hi::Value &highlight, CYLocation &location, void *scanner) {
 692     YYSTYPE value;
 693     if (cylex(&value, &location, scanner) == 0)
 694         return false;
 695     highlight = value.highlight_;
 696     return true;
 697 }
 698
 699 #if defined(__clang__)
 700 #pragma clang diagnostic pop
 701 #else
 702 // must not pop -Wunused-function
 703 //#pragma GCC diagnostic pop
 704 #endif