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