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