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 S(stack) do { \
  56     if (yyextra->stack.size() == 1) \
  57         E("invalid brace") \
  58     yyextra->stack.pop(); \
  59 } while (false)
  60
  61 #define P yyextra->pool_
  62 #define A new(P)
  63 #define Y P.strmemdup(yytext, yyleng)
  64
  65 #define I(type, Type, value, highlight) do { \
  66     yylval->semantic_.type ## _ = A CY ## Type; \
  67     F(value, highlight); \
  68 } while (false)
  69
  70 #define N \
  71     if (yyextra->last_ && yyextra->next_) { \
  72         yyextra->last_ = false; \
  73         F(tk::NewLine, hi::Nothing); \
  74     }
  75
  76 #define V(more) { \
  77     if (const char *nl = reinterpret_cast<const char *>(memchr(yytext, '\n', yyleng))) { \
  78         unsigned lines(0); \
  79         size_t left; \
  80         do { \
  81             ++lines; \
  82             left = yyleng - (nl - yytext) - 1; \
  83             nl = reinterpret_cast<const char *>(memchr(nl + 1, '\n', left)); \
  84         } while (nl != NULL); \
  85         yylloc->step(); \
  86         yylloc->end.Lines(lines); \
  87         yylloc->end.Columns(left); \
  88         more \
  89     } else L \
  90 }
  91
  92 #define R yylloc->end.Columns(yyleng);
  93 #define L yylloc->step(); R
  94
  95 #define H(value, highlight) do { \
  96     if (yyextra->highlight_) \
  97         F(value, highlight); \
  98 } while (false)
  99
 100 #define M \
 101     H(tk::Comment, hi::Comment);
 102
 103 #define E(message) { \
 104     CYDriver::Error error; \
 105     error.location_ = *yylloc; \
 106     error.message_ = "syntax error, " message; \
 107     yyextra->errors_.push_back(error); \
 108     yyterminate(); \
 109 }
 110
 111 int X(char c) {
 112     if (c >= '0' && c <= '9')
 113         return c - '0';
 114     if (c >= 'a' && c <= 'f')
 115         return c - 'a' + 10;
 116     if (c >= 'A' && c <= 'F')
 117         return c - 'A' + 10;
 118     return -1;
 119 }
 120
 121 template <typename Type_>
 122 static void U(Type_ &local, unsigned point) {
 123     if (false) {
 124     } else if (point < 0x000080) {
 125         *local++ = point;
 126     } else if (point < 0x000800) {
 127         *local++ = 0xc0 | point >> 0x06 & 0x1f;
 128         goto one;
 129     } else if (point < 0x010000) {
 130         *local++ = 0xe0 | point >> 0x0c & 0x0f;
 131         goto two;
 132     } else if (point < 0x110000) {
 133         *local++ = 0xf0 | point >> 0x12 & 0x07;
 134         *local++ = 0x80 | point >> 0x0c & 0x3f;
 135       two:
 136         *local++ = 0x80 | point >> 0x06 & 0x3f;
 137       one:
 138         *local++ = 0x80 | point >> 0x00 & 0x3f;
 139     } else _assert(false);
 140 }
 141
 142 static void U(char *&local, const char *text, yy_size_t &i) {
 143     unsigned point;
 144
 145     char next(text[++i]);
 146     if (next != '{') {
 147         point = X(text[i + 0]) << 12 | X(text[i + 1]) << 8 | X(text[i + 2]) << 4 | X(text[i + 3]);
 148         i += 3;
 149     } else {
 150         point = 0;
 151         for (;;) {
 152             next = text[++i];
 153             if (next == '}')
 154                 break;
 155             point = (point << 4) | X(next);
 156         }
 157     }
 158
 159     U(local, point);
 160 }
 161
 162 #define CYLexBufferPoint(point) do { \
 163     std::back_insert_iterator<std::vector<char> > inserter(yyextra->buffer_); \
 164     U(inserter, point); \
 165 } while (false)
 166
 167 #define CYLexBufferUnit(value) do { \
 168     yyextra->buffer_.push_back(value); \
 169 } while (false)
 170
 171 #define CYLexBufferUnits(data, size) do { \
 172     yyextra->buffer_.insert(yyextra->buffer_.end(), data, data + size); \
 173 } while (false)
 174
 175 #define CYLexBufferStart(condition) do { \
 176     yyextra->buffer_.clear(); \
 177     yy_push_state(condition, yyscanner); \
 178 } while (false)
 179
 180 #define CYLexBufferEnd(type, Type, value, highlight) do { \
 181     yy_pop_state(yyscanner); \
 182     I(type, Type(P.strmemdup(yyextra->buffer_.data(), yyextra->buffer_.size()), yyextra->buffer_.size()), value, highlight); \
 183 } while (false)
 184
 185 #define YY_INPUT(data, value, size) { \
 186     if (yyextra->data_.eof()) \
 187         value = YY_NULL; \
 188     else { \
 189         yyextra->data_.read(data, size); \
 190         size_t copy(yyextra->data_.gcount()); \
 191         value = copy == 0 ? YY_NULL : copy; \
 192     } \
 193 }
 194
 195 %}
 196
 197 %option prefix="cy"
 198 %option bison-bridge
 199 %option bison-locations
 200 %option nodefault
 201 %option noyywrap
 202 %option noyylineno
 203 %option nounput
 204 %option nounistd
 205 %option 8bit
 206 %option backup
 207 %option batch
 208 %option never-interactive
 209 %option pointer
 210 %option reentrant
 211 %option stack
 212
 213 U1 [\x00-\x7f]
 214 U0 [\x80-\xbf]
 215 U2 [\xc2-\xdf]
 216 U3 [\xe0-\xef]
 217 U4 [\xf0-\xf4]
 218 UN [\xc0-\xc1\xf5-\xff]
 219
 220 HexDigit [0-9a-fA-F]
 221 LineTerminatorSequence \r?\n|\r|\xe2\x80[\xa8\xa9]
 222 WhiteSpace [\x09\x0b\x0c\x20]|\xc2\xa0|\xef\xbb\xbf
 223 UnicodeEscape \\u({HexDigit}{4}|\{{HexDigit}+\})
 224
 225 @include NotLineTerminator.l
 226 NoneTerminatorCharacter [^\r\n\x80-\xff]|{NotLineTerminator}
 227 RegExCharacter [^/[\\]{-}[\r\n\x80-\xff]|{NotLineTerminator}
 228 RegClsCharacter [^]\\]{-}[\r\n\x80-\xff]|{NotLineTerminator}
 229 CommentCharacter [^*/]{-}[\r\n\x80-\xff]|{NotLineTerminator}
 230 SingleCharacter [^'\\]{-}[\r\n\x80-\xff]|{NotLineTerminator}
 231 DoubleCharacter [^"\\]{-}[\r\n\x80-\xff]|{NotLineTerminator}
 232 PlateCharacter [^$`\\]{-}[\r\n\x80-\xff]|{NotLineTerminator}
 233
 234 @include UnicodeIDStart.l
 235 @include UnicodeIDContinue.l
 236 IdentifierMore [$_]
 237
 238 UnicodeStart {IdentifierMore}|{UnicodeIDStart}
 239 UnicodePart {IdentifierMore}|\xe2\x80[\x8c\x8d]|{UnicodeIDContinue}
 240 UnicodeFail {U2}|{U3}|{U3}{U0}|{U4}|{U4}{U0}|{U4}{U0}{U0}|{UN}|{U0}
 241 UnicodeScrap {UnicodePart}*{UnicodeFail}?
 242
 243 IdentifierStart {UnicodeStart}|{UnicodeEscape}
 244 IdentifierPart {UnicodePart}|{UnicodeEscape}
 245 IdentifierFail {UnicodeFail}|\\(u({HexDigit}{0,3}|\{{HexDigit}*))?
 246 IdentifierScrap {IdentifierPart}*{IdentifierFail}?
 247
 248 RegularExpressionBackslashSequence \\{NoneTerminatorCharacter}
 249 RegularExpressionClassChars ({RegClsCharacter}|{RegularExpressionBackslashSequence})*
 250
 251 @begin E4X
 252 XMLNameStart [a-zA-Z_:]
 253 XMLNamePart [a-zA-Z0-9.-_:]
 254 XMLName {XMLNameStart}{XMLNamePart}*
 255 @end
 256
 257 %x RegularExpression
 258 %x MultiLine
 259
 260 %x LegacySingleString
 261 %x LegacyDoubleString
 262
 263 %x StrictSingleString
 264 %x StrictDoubleString
 265 %x StrictAccentString
 266
 267 %s Div
 268 %s DivOrTemplateTail
 269
 270 @begin E4X
 271 %x XMLContent
 272 %x XMLTag
 273 @end
 274
 275 %%
 276
 277     /* RegEx {{{ */
 278 <RegularExpression>{
 279     \/{UnicodePart}* R CYLexBufferUnits(yytext, yyleng); CYLexBufferEnd(literal, RegEx, tk::RegularExpressionLiteral, hi::Constant);
 280     \/{UnicodePart}*{UnicodeFail} R E("invalid flags")
 281
 282     {RegExCharacter}+ R CYLexBufferUnits(yytext, yyleng);
 283     {RegExCharacter}*{UnicodeFail} R E("invalid character");
 284
 285     {RegularExpressionBackslashSequence} R CYLexBufferUnits(yytext, yyleng);
 286     \\{UnicodeFail}? R E("invalid escape")
 287
 288     "["{RegularExpressionClassChars}"]" R CYLexBufferUnits(yytext, yyleng);
 289     "["{RegularExpressionClassChars}\\? R E("invalid class");
 290     "["{RegularExpressionClassChars}\\?{UnicodeFail} R E("invalid character");
 291     "["{RegularExpressionClassChars}\\?{LineTerminatorSequence} R E("invalid newline");
 292
 293     (\\|{RegExCharacter}+)?{LineTerminatorSequence} R E("invalid newline");
 294     <<EOF>> R E("unterminated regex")
 295 }
 296     /* }}} */
 297     /* Comment {{{ */
 298 #![^\n]* L M
 299 \/\/[^\n]* L M
 300
 301 \/\* L yy_push_state(MultiLine, yyscanner);
 302
 303 <MultiLine>{
 304     \**\*\/ R yy_pop_state(yyscanner); M N
 305     \**{LineTerminatorSequence} yylloc->end.Lines(); yyextra->last_ = true;
 306     \**{CommentCharacter}|\/ R
 307     \**({UnicodeFail}|\*) R E("invalid comment");
 308     <<EOF>> R E("invalid comment")
 309 }
 310     /* }}} */
 311     /* Element {{{ */
 312 @begin E4X
 313 <RegExp>"<>"      L F(tk::LeftRight, hi::Structure);
 314 <XMLContent>"</>" L F(tk::LeftSlashRight, hi::Structure);
 315
 316 <RegExp,XMLContent>\<!\[CDATA\[(\n|[^[]|\[[^[]|\[\[[^>])*]]> V() F(tk::XMLCDATA, hi::Constant);
 317 <RegExp,XMLContent>\<!--(\n|[^-]|-[^-])*--> V() F(tk::XMLComment, hi::Comment);
 318 <RegExp,XMLContent>\<?(\n|[^?]|\?[^>])*?> V() F(tk::XMLPI, hi::Meta);
 319
 320 <XMLTag>"="  L F(tk::Equal, hi::Structure);
 321 <XMLTag>">"  L F(tk::Right, hi::Structure);
 322 <XMLTag>"/>" L F(tk::SlashRight, hi::Structure);
 323 <XMLTag>"{"  L F(tk::OpenBrace, hi::Structure);
 324
 325 <XMLTag>\"(\n|[^"])*\"|'(\n|[^'])*' V() F(tk::XMLAttributeValue, hi::Constant);
 326 <XMLTag>{XMLName} L F(tk::XMLName, hi::Identifier);
 327 <XMLTag>[ \t\r\n] V() F(tk::XMLWhitespace, hi::Nothing);
 328
 329 <XMLContent>"{"  L F(tk::OpenBrace, hi::Structure);
 330 <XMLContent>"<"  L F(tk::Left, hi::Structure);
 331 <XMLContent>"</" L F(tk::LeftSlash, hi::Structure);
 332 @end
 333     /* }}} */
 334     /* Operator {{{ */
 335 "..."  L F(tk::PeriodPeriodPeriod, hi::Meta);
 336 ".."   L E("invalid operator")
 337
 338 @begin E4X
 339 "::"   L F(tk::ColonColon, hi::Operator);
 340 ".."   L F(tk::PeriodPeriod, hi::Operator);
 341 @end
 342
 343 @begin E4X ObjectiveC
 344 "@"    L F(tk::At, hi::Operator);
 345 "#"    L F(tk::Pound, hi::Operator);
 346 @end
 347
 348 "&"    L F(tk::Ampersand, hi::Operator);
 349 "&&"   L F(tk::AmpersandAmpersand, hi::Operator);
 350 "&="   L F(tk::AmpersandEqual, hi::Operator);
 351 "^"    L F(tk::Carrot, hi::Operator);
 352 "^="   L F(tk::CarrotEqual, hi::Operator);
 353 "="    L F(tk::Equal, hi::Operator);
 354 "=="   L F(tk::EqualEqual, hi::Operator);
 355 "==="  L F(tk::EqualEqualEqual, hi::Operator);
 356 "=>"   L F(yyextra->newline_ ? tk::EqualRight_ : tk::EqualRight, hi::Operator);
 357 "!"    L F(tk::Exclamation, hi::Operator);
 358 "!="   L F(tk::ExclamationEqual, hi::Operator);
 359 "!=="  L F(tk::ExclamationEqualEqual, hi::Operator);
 360 "-"    L F(tk::Hyphen, hi::Operator);
 361 "-="   L F(tk::HyphenEqual, hi::Operator);
 362 "--"   L F(yyextra->newline_ ? tk::HyphenHyphen_ : tk::HyphenHyphen, hi::Operator);
 363 "->"   L F(tk::HyphenRight, hi::Operator);
 364 "<"    L F(tk::Left, hi::Operator);
 365 "<="   L F(tk::LeftEqual, hi::Operator);
 366 "<<"   L F(tk::LeftLeft, hi::Operator);
 367 "<<="  L F(tk::LeftLeftEqual, hi::Operator);
 368 "%"    L F(tk::Percent, hi::Operator);
 369 "%="   L F(tk::PercentEqual, hi::Operator);
 370 "."    L F(tk::Period, hi::Operator);
 371 "|"    L F(tk::Pipe, hi::Operator);
 372 "|="   L F(tk::PipeEqual, hi::Operator);
 373 "||"   L F(tk::PipePipe, hi::Operator);
 374 "+"    L F(tk::Plus, hi::Operator);
 375 "+="   L F(tk::PlusEqual, hi::Operator);
 376 "++"   L F(yyextra->newline_ ? tk::PlusPlus_ : tk::PlusPlus, hi::Operator);
 377 ">"    L F(tk::Right, hi::Operator);
 378 ">="   L F(tk::RightEqual, hi::Operator);
 379 ">>"   L F(tk::RightRight, hi::Operator);
 380 ">>="  L F(tk::RightRightEqual, hi::Operator);
 381 ">>>"  L F(tk::RightRightRight, hi::Operator);
 382 ">>>=" L F(tk::RightRightRightEqual, hi::Operator);
 383 "*"    L F(tk::Star, hi::Operator);
 384 "*="   L F(tk::StarEqual, hi::Operator);
 385 "~"    L F(tk::Tilde, hi::Operator);
 386
 387 "/"  L F(tk::Slash, hi::Operator);
 388 "/=" L F(tk::SlashEqual, hi::Operator);
 389
 390 ":"    L F(tk::Colon, hi::Structure);
 391 ","    L F(tk::Comma, hi::Structure);
 392 "?"    L F(tk::Question, hi::Structure);
 393 ";"    L F(tk::SemiColon, hi::Structure);
 394
 395 "("    L F(tk::OpenParen, hi::Structure);
 396 ")"    L F(tk::CloseParen, hi::Structure);
 397
 398 "{"    L yyextra->template_.push(false); F(yyextra->newline_ ? tk::OpenBrace_ : tk::OpenBrace, hi::Structure);
 399 <Div>"}" L S(template_); F(tk::CloseBrace, hi::Structure);
 400
 401 "["    L F(tk::OpenBracket, hi::Structure);
 402 "]"    L F(tk::CloseBracket, hi::Structure);
 403     /* }}} */
 404     /* Keyword {{{ */
 405 "@error"          L F(tk::At_error_, hi::Error);
 406
 407 @begin Java
 408 "@class"          L F(tk::At_class_, hi::Meta);
 409 @end
 410
 411 @begin C
 412 "@encode"         L F(tk::At_encode_, hi::Meta);
 413 @end
 414
 415 @begin ObjectiveC
 416 "@end"            L F(tk::At_end_, hi::Meta);
 417 "@false"          L F(tk::At_false_, hi::Constant);
 418 "@implementation" L F(tk::At_implementation_, hi::Meta);
 419 "@import"         L F(tk::At_import_, hi::Special);
 420 "@NO"             L F(tk::At_NO_, hi::Constant);
 421 "@null"           L F(tk::At_null_, hi::Constant);
 422 "@selector"       L F(tk::At_selector_, hi::Meta);
 423 "@true"           L F(tk::At_true_, hi::Constant);
 424 "@YES"            L F(tk::At_YES_, hi::Constant);
 425 @end
 426
 427 @({UnicodeStart}{UnicodeScrap}|{UnicodeFail}) L E("invalid keyword")
 428     /* }}} */
 429     /* Highlight {{{ */
 430 "undefined"       L F(tk::_undefined_, hi::Operator);
 431
 432 @begin ObjectiveC
 433 "bool"            L F(tk::_bool_, hi::Type);
 434 "BOOL"            L F(tk::_BOOL_, hi::Type);
 435 "id"              L F(tk::_id_, hi::Type);
 436 "nil"             L F(tk::_nil_, hi::Constant);
 437 "NULL"            L F(tk::_NULL_, hi::Constant);
 438 "SEL"             L F(tk::_SEL_, hi::Type);
 439 @end
 440     /* }}} */
 441     /* Reserved {{{ */
 442 "abstract"        L /*FII*/ F(tk::_abstract_, hi::Meta);
 443 "await"           L /*II?*/ F(tk::_await_, hi::Meta);
 444 "boolean"         L /*FII*/ F(tk::_boolean_, hi::Type);
 445 "break"           L /*KKK*/ F(tk::_break_, hi::Control);
 446 "byte"            L /*FII*/ F(tk::_byte_, hi::Type);
 447 "case"            L /*KKK*/ F(tk::_case_, hi::Control);
 448 "catch"           L /*KKK*/ F(tk::_catch_, hi::Control);
 449 "char"            L /*FII*/ F(tk::_char_, hi::Type);
 450 "class"           L /*FFK*/ F(tk::_class_, hi::Meta);
 451 "const"           L /*FFK*/ F(tk::_const_, hi::Meta);
 452 "constructor"     L /*III*/ F(tk::_constructor_, hi::Special);
 453 "continue"        L /*KKK*/ F(tk::_continue_, hi::Control);
 454 "debugger"        L /*FKK*/ F(tk::_debugger_, hi::Meta);
 455 "default"         L /*KKK*/ F(tk::_default_, hi::Control);
 456 "delete"          L /*KKK*/ F(tk::_delete_, hi::Operator);
 457 "do"              L /*KKK*/ F(tk::_do_, hi::Control);
 458 "double"          L /*FII*/ F(tk::_double_, hi::Type);
 459 "else"            L /*KKK*/ F(tk::_else_, hi::Control);
 460 "enum"            L /*FFF*/ F(tk::_enum_, hi::Meta);
 461 "export"          L /*FFK*/ F(tk::_export_, hi::Meta);
 462 "extends"         L /*FFK*/ F(tk::_extends_, hi::Meta);
 463 "false"           L /*LLL*/ F(tk::_false_, hi::Constant);
 464 "final"           L /*FII*/ F(tk::_final_, hi::Meta);
 465 "finally"         L /*KKK*/ F(tk::_finally_, hi::Control);
 466 "float"           L /*FII*/ F(tk::_float_, hi::Type);
 467 "for"             L /*KKK*/ F(tk::_for_, hi::Control);
 468 "from"            L /*III*/ F(tk::_from_, hi::Meta);
 469 "function"        L /*KKK*/ F(tk::_function_, hi::Meta);
 470 "goto"            L /*FII*/ F(tk::_goto_, hi::Control);
 471 "get"             L /*III*/ F(tk::_get_, hi::Meta);
 472 "if"              L /*KKK*/ F(tk::_if_, hi::Control);
 473 "implements"      L /*FSS*/ F(tk::_implements_, hi::Meta);
 474 "import"          L /*FFK*/ F(tk::_import_, hi::Meta);
 475 "in"              L /*KKK*/ F(yyextra->in_.top() ? tk::_in__ : tk::_in_, hi::Operator);
 476 "instanceof"      L /*KKK*/ F(tk::_instanceof_, hi::Operator);
 477 "int"             L /*FII*/ F(tk::_int_, hi::Type);
 478 "interface"       L /*FSS*/ F(tk::_interface_, hi::Meta);
 479 "let"             L /*IS?*/ F(tk::_let_, hi::Meta);
 480 "long"            L /*FII*/ F(tk::_long_, hi::Type);
 481 "native"          L /*FII*/ F(tk::_native_, hi::Meta);
 482 "new"             L /*KKK*/ F(tk::_new_, hi::Operator);
 483 "null"            L /*LLL*/ F(tk::_null_, hi::Constant);
 484 "package"         L /*FSS*/ F(tk::_package_, hi::Meta);
 485 "private"         L /*FSS*/ F(tk::_private_, hi::Meta);
 486 "protected"       L /*FSS*/ F(tk::_protected_, hi::Meta);
 487 "prototype"       L /*III*/ F(tk::_prototype_, hi::Special);
 488 "public"          L /*FSS*/ F(tk::_public_, hi::Meta);
 489 "return"          L /*KKK*/ F(yyextra->return_.top() ? tk::_return__ : tk::_return_, hi::Control);
 490 "set"             L /*III*/ F(tk::_set_, hi::Meta);
 491 "short"           L /*FII*/ F(tk::_short_, hi::Type);
 492 "static"          L /*FS?*/ F(tk::_static_, hi::Meta);
 493 "super"           L /*FFK*/ F(yyextra->super_.top() ? tk::_super__ : tk::_super_, hi::Constant);
 494 "switch"          L /*KKK*/ F(tk::_switch_, hi::Control);
 495 "synchronized"    L /*FII*/ F(tk::_synchronized_, hi::Meta);
 496 "this"            L /*KKK*/ F(tk::_this_, hi::Constant);
 497 "throw"           L /*KKK*/ F(tk::_throw_, hi::Control);
 498 "throws"          L /*FII*/ F(tk::_throws_, hi::Meta);
 499 "transient"       L /*FII*/ F(tk::_transient_, hi::Meta);
 500 "true"            L /*LLL*/ F(tk::_true_, hi::Constant);
 501 "try"             L /*KKK*/ F(tk::_try_, hi::Control);
 502 "typeof"          L /*KKK*/ F(tk::_typeof_, hi::Operator);
 503 "var"             L /*KKK*/ F(tk::_var_, hi::Meta);
 504 "void"            L /*KKK*/ F(tk::_void_, hi::Operator);
 505 "volatile"        L /*FII*/ F(tk::_volatile_, hi::Meta);
 506 "while"           L /*KKK*/ F(tk::_while_, hi::Control);
 507 "with"            L /*KKK*/ F(tk::_with_, hi::Control);
 508 "yield"           L /*IS?*/ F(yyextra->yield_.top() ? tk::_yield__ : tk::_yield_, hi::Control);
 509
 510 "auto"            L F(tk::_auto_, hi::Meta);
 511 "each"            L F(tk::_each_, hi::Control);
 512 "of"              L F(tk::_of_, hi::Operator);
 513
 514 @begin C
 515 "extern"          L F(tk::_extern_, hi::Type);
 516 "signed"          L F(tk::_signed_, hi::Type);
 517 "typedef"         L F(tk::_typedef_, hi::Meta);
 518 "unsigned"        L F(tk::_unsigned_, hi::Type);
 519 @end
 520
 521 @begin ObjectiveC
 522 "NO"              L F(tk::_NO_, hi::Constant);
 523 "YES"             L F(tk::_YES_, hi::Constant);
 524 @end
 525
 526 @begin E4X
 527 "namespace"       L F(tk::_namespace_, hi::Meta);
 528 "xml"             L F(tk::_xml_, hi::Meta);
 529 @end
 530     /* }}} */
 531     /* Identifier {{{ */
 532 {UnicodeStart}{UnicodePart}* L I(identifier, Identifier(Y), tk::Identifier_, hi::Identifier);
 533
 534 {IdentifierStart}{IdentifierPart}* L {
 535     char *value(A char[yyleng + 1]);
 536     char *local(value);
 537
 538     for (yy_size_t i(0), e(yyleng); i != e; ++i) {
 539         char next(yytext[i]);
 540         if (next != '\\')
 541             *local++ = next;
 542         else
 543             U(local, yytext, ++i);
 544     }
 545
 546     *local = '\0';
 547     I(identifier, Identifier(value), tk::Identifier_, hi::Identifier);
 548 }
 549
 550 ({IdentifierStart}{IdentifierPart}*)?{IdentifierFail} L E("invalid identifier")
 551     /* }}} */
 552     /* Number {{{ */
 553 0[0-7]+ L I(number, Number(strtoull(yytext + 1, NULL, 8)), tk::NumericLiteral, hi::Constant);
 554 0[0-9]+ L I(number, Number(strtoull(yytext + 1, NULL, 10)), tk::NumericLiteral, hi::Constant);
 555
 556 0[xX][0-9a-fA-F]+ L I(number, Number(strtoull(yytext + 2, NULL, 16)), tk::NumericLiteral, hi::Constant);
 557 0[oO][0-7]+ L I(number, Number(strtoull(yytext + 2, NULL, 8)), tk::NumericLiteral, hi::Constant);
 558 0[bB][0-1]+ L I(number, Number(strtoull(yytext + 2, NULL, 2)), tk::NumericLiteral, hi::Constant);
 559
 560 (\.[0-9]+|(0|[1-9][0-9]*)(\.[0-9]*)?)([eE][+-]?[0-9]+)? L I(number, Number(strtod(yytext, NULL)), tk::NumericLiteral, hi::Constant);
 561 (\.[0-9]+|(0|[1-9][0-9]*)(\.[0-9]*)?)[eE][+-]?{IdentifierScrap} L E("invalid exponent")
 562 (\.?[0-9]|(0|[1-9][0-9]*)\.){IdentifierScrap} L E("invalid number")
 563     /* }}} */
 564     /* String {{{ */
 565 \' L CYLexBufferStart(LegacySingleString);
 566 <LegacySingleString,StrictSingleString>{
 567     \' R CYLexBufferEnd(string, String, tk::StringLiteral, hi::Constant);
 568     {SingleCharacter}+ R CYLexBufferUnits(yytext, yyleng);
 569     {SingleCharacter}*{UnicodeFail} R E("invalid character");
 570     {LineTerminatorSequence} R E("invalid newline");
 571 }
 572
 573 \" L CYLexBufferStart(LegacyDoubleString);
 574 <LegacyDoubleString,StrictDoubleString>{
 575     \" R CYLexBufferEnd(string, String, tk::StringLiteral, hi::Constant);
 576     {DoubleCharacter}+ R CYLexBufferUnits(yytext, yyleng);
 577     {DoubleCharacter}*{UnicodeFail} R E("invalid character");
 578     {LineTerminatorSequence} R E("invalid newline");
 579 }
 580     /* }}} */
 581     /* Template {{{ */
 582 "`" L yyextra->tail_ = false; CYLexBufferStart(StrictAccentString);
 583 <DivOrTemplateTail>"}" L yyextra->tail_ = true; S(template_); CYLexBufferStart(StrictAccentString);
 584
 585 <StrictAccentString>{
 586     "`" R CYLexBufferEnd(string, String, yyextra->tail_ ? tk::TemplateTail : tk::NoSubstitutionTemplate, hi::Constant);
 587     "${" R yyextra->template_.push(true); CYLexBufferEnd(string, String, yyextra->tail_ ? tk::TemplateMiddle : tk::TemplateHead, hi::Constant);
 588
 589     "$" R CYLexBufferUnit('$');
 590
 591     {PlateCharacter}+ R CYLexBufferUnits(yytext, yyleng);
 592     {PlateCharacter}*{UnicodeFail} R E("invalid character");
 593     {LineTerminatorSequence} R E("invalid newline");
 594 }
 595     /* }}} */
 596     /* Escapes {{{ */
 597 <LegacySingleString,LegacyDoubleString>{
 598     \\[0-3][0-7][0-7] R CYLexBufferPoint(X(yytext[1]) << 6 | X(yytext[2]) << 3 | X(yytext[3]));
 599     \\[0-7][0-7] R CYLexBufferUnit(X(yytext[1]) << 3 | X(yytext[2]));
 600     \\[0-7] R CYLexBufferUnit(X(yytext[1]));
 601 }
 602
 603 <StrictSingleString,StrictDoubleString,StrictAccentString>{
 604     \\0[0-7] R E("legacy escape");
 605     \\0 R CYLexBufferUnit('\0');
 606 }
 607
 608 <LegacySingleString,LegacyDoubleString,StrictSingleString,StrictDoubleString,StrictAccentString>{
 609     \\b R CYLexBufferUnit('\b');
 610     \\f R CYLexBufferUnit('\f');
 611     \\n R CYLexBufferUnit('\n');
 612     \\r R CYLexBufferUnit('\r');
 613     \\t R CYLexBufferUnit('\t');
 614     \\v R CYLexBufferUnit('\v');
 615
 616     \\x{HexDigit}{2} R CYLexBufferPoint(X(yytext[2]) << 4 | X(yytext[3]));
 617
 618     \\u{HexDigit}{4} R CYLexBufferPoint(X(yytext[2]) << 12 | X(yytext[3]) << 8 | X(yytext[4]) << 4 | X(yytext[5]));
 619
 620     \\u\{{HexDigit}+\} R {
 621         unsigned point(0);
 622         for (yy_size_t i(3); i != yyleng - 1; ++i)
 623             point = point << 4 | X(yytext[i]);
 624         CYLexBufferPoint(point);
 625     }
 626
 627     \\{LineTerminatorSequence} yylloc->end.Lines();
 628     \\(.|{NotLineTerminator}) R CYLexBufferUnits(yytext + 1, yyleng - 1);
 629
 630     \\(x{HexDigit}{0,1}|u({HexDigit}{0,3}|\{{HexDigit}*)|{UnicodeFail})? R E("invalid escape");
 631     <<EOF>> R E("invalid string");
 632 }
 633     /* }}} */
 634
 635 {LineTerminatorSequence} yylloc->step(); yylloc->end.Lines(); yyextra->last_ = true; N
 636 {WhiteSpace} L
 637
 638 <<EOF>> if (yyextra->auto_) { yyextra->auto_ = false; F(tk::AutoComplete, hi::Nothing); } L yyterminate();
 639
 640 . L E("invalid character")
 641
 642 %%
 643
 644 #undef yyextra
 645 #define yyextra this
 646 #define yyscanner scanner_
 647
 648 void CYDriver::ScannerInit() {
 649     cylex_init(&scanner_);
 650     cyset_extra(this, scanner_);
 651 }
 652
 653 void CYDriver::ScannerDestroy() {
 654     cylex_destroy(scanner_);
 655 }
 656
 657 void CYDriver::SetRegEx(bool equal) {
 658     CYLexBufferStart(RegularExpression);
 659     CYLexBufferUnit('/');
 660     if (equal)
 661         CYLexBufferUnit('=');
 662 }
 663
 664 void CYDriver::SetCondition(Condition condition) {
 665     struct yyguts_t *yyg(reinterpret_cast<struct yyguts_t *>(scanner_));
 666
 667     switch (condition) {
 668 @begin E4X
 669         case XMLContentCondition:
 670             BEGIN(XMLContent);
 671             break;
 672         case XMLTagCondition:
 673             BEGIN(XMLTag);
 674             break;
 675 @end
 676         default:
 677             _assert(false);
 678     }
 679 }
 680
 681 void CYDriver::PushCondition(Condition condition) {
 682     switch (condition) {
 683 @begin E4X
 684         case XMLContentCondition:
 685             yy_push_state(XMLContent, scanner_);
 686             break;
 687         case XMLTagCondition:
 688             yy_push_state(XMLTag, scanner_);
 689             break;
 690 @end
 691         default:
 692             _assert(false);
 693     }
 694 }
 695
 696 void CYDriver::PopCondition() {
 697     yy_pop_state(scanner_);
 698 }
 699
 700 bool CYLexerHighlight(hi::Value &highlight, CYLocation &location, void *scanner) {
 701     YYSTYPE value;
 702     if (cylex(&value, &location, scanner) == 0)
 703         return false;
 704     highlight = value.highlight_;
 705     return true;
 706 }
 707
 708 #if defined(__clang__)
 709 #pragma clang diagnostic pop
 710 #else
 711 // must not pop -Wunused-function
 712 //#pragma GCC diagnostic pop
 713 #endif