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     yyextra->no_.Class = false; \
  50     yyextra->no_.Function = false; \
  51     yyextra->no_.NewLine = false; \
  52     yyextra->no_.OpenBrace = false; \
  53     yylval->highlight_ = highlight; \
  54     return token; \
  55 } while (false)
  56
  57 #define P yyextra->pool_
  58 #define A new(P)
  59 #define Y P.strmemdup(yytext, yyleng)
  60
  61 #define I(type, Type, value, highlight) do { \
  62     yylval->semantic_.type ## _ = A CY ## Type; \
  63     F(value, highlight); \
  64 } while (false)
  65
  66 #define C \
  67     yyextra->newline_ = yyextra->last_; \
  68     yyextra->last_ = false; \
  69     BEGIN(yyextra->template_.top() ? DivOrTemplateTail : Div);
  70
  71 #define N \
  72     if (yyextra->last_ && yyextra->no_.NewLine) { \
  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     C 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 %option full
 215 %option ecs
 216
 217 U1 [\x00-\x7f]
 218 U0 [\x80-\xbf]
 219 U2 [\xc2-\xdf]
 220 U3 [\xe0-\xef]
 221 U4 [\xf0-\xf4]
 222 UN [\xc0-\xc1\xf5-\xff]
 223
 224 HexDigit [0-9a-fA-F]
 225 LineTerminatorSequence \r?\n|\r|\xe2\x80[\xa8\xa9]
 226 WhiteSpace [\x09\x0b\x0c\x20]|\xc2\xa0|\xef\xbb\xbf
 227 UnicodeEscape \\u({HexDigit}{4}|\{{HexDigit}+\})
 228
 229 @include NotLineTerminator.l
 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 NonTerminator [^\n]
 250 BackslashSequence \\{NonTerminator}
 251 RegularExpressionFirstChar [^\n*\\/]|{BackslashSequence}
 252 RegularExpressionChar [^\n\\/]|{BackslashSequence}
 253 RegularExpressionFlags {UnicodePart}*
 254 RegularExpressionChars {RegularExpressionChar}*
 255 RegularExpressionBody {RegularExpressionFirstChar}{RegularExpressionChars}
 256
 257 @begin E4X
 258 XMLNameStart [a-zA-Z_:]
 259 XMLNamePart [a-zA-Z0-9.-_:]
 260 XMLName {XMLNameStart}{XMLNamePart}*
 261 @end
 262
 263 %x MultiLine
 264
 265 %x LegacySingleString
 266 %x LegacyDoubleString
 267
 268 %x StrictSingleString
 269 %x StrictDoubleString
 270 %x StrictAccentString
 271
 272 %s Div
 273 %s DivOrTemplateTail
 274 %s RegExp
 275 %s RegExpOrTemplateTail
 276
 277 @begin E4X
 278 %x XMLContent
 279 %x XMLTag
 280 @end
 281
 282 %%
 283
 284     /* RegEx {{{ */
 285 <RegExp,RegExpOrTemplateTail>{
 286     \/{RegularExpressionBody}\/{RegularExpressionFlags} L C I(literal, RegEx(Y), tk::RegularExpressionLiteral, hi::Constant);
 287     \/{RegularExpressionBody}\/{RegularExpressionFlags}{UnicodeFail} L E("invalid flags")
 288     \/{RegularExpressionBody}?\\? L E("unterminated regex")
 289 }
 290     /* }}} */
 291     /* Comment {{{ */
 292 #![^\n]* L M
 293 \/\/[^\n]* L M
 294
 295 \/\* L yy_push_state(MultiLine, yyscanner);
 296
 297 <MultiLine>{
 298     \**\*\/ R yy_pop_state(yyscanner); M N
 299     \**{LineTerminatorSequence} yylloc->end.lines(); yyextra->last_ = true;
 300     \**{CommentCharacter}|\/ R
 301     \**({UnicodeFail}|\*) R E("invalid comment");
 302     <<EOF>> R E("invalid comment")
 303 }
 304     /* }}} */
 305     /* Element {{{ */
 306 @begin E4X
 307 <RegExp>"<>"      L F(tk::LeftRight, hi::Structure);
 308 <XMLContent>"</>" L F(tk::LeftSlashRight, hi::Structure);
 309
 310 <RegExp,XMLContent>\<!\[CDATA\[(\n|[^[]|\[[^[]|\[\[[^>])*]]> V() F(tk::XMLCDATA, hi::Constant);
 311 <RegExp,XMLContent>\<!--(\n|[^-]|-[^-])*--> V() F(tk::XMLComment, hi::Comment);
 312 <RegExp,XMLContent>\<?(\n|[^?]|\?[^>])*?> V() F(tk::XMLPI, hi::Meta);
 313
 314 <XMLTag>"="  L F(tk::Equal, hi::Structure);
 315 <XMLTag>">"  L F(tk::Right, hi::Structure);
 316 <XMLTag>"/>" L F(tk::SlashRight, hi::Structure);
 317 <XMLTag>"{"  L F(tk::OpenBrace, hi::Structure);
 318
 319 <XMLTag>\"(\n|[^"])*\"|'(\n|[^'])*' V() F(tk::XMLAttributeValue, hi::Constant);
 320 <XMLTag>{XMLName} L F(tk::XMLName, hi::Identifier);
 321 <XMLTag>[ \t\r\n] V() F(tk::XMLWhitespace, hi::Nothing);
 322
 323 <XMLContent>"{"  L F(tk::OpenBrace, hi::Structure);
 324 <XMLContent>"<"  L F(tk::Left, hi::Structure);
 325 <XMLContent>"</" L F(tk::LeftSlash, hi::Structure);
 326 @end
 327     /* }}} */
 328     /* Operator {{{ */
 329 "..."  L C F(tk::PeriodPeriodPeriod, hi::Meta);
 330 ".."   L E("invalid operator")
 331
 332 @begin E4X
 333 "::"   L C F(tk::ColonColon, hi::Operator);
 334 ".."   L C F(tk::PeriodPeriod, hi::Operator);
 335 @end
 336
 337 @begin E4X ObjectiveC
 338 "@"    L C F(tk::At, hi::Operator);
 339 "#"    L C F(tk::Pound, hi::Operator);
 340 @end
 341
 342 "&"    L C F(tk::Ampersand, hi::Operator);
 343 "&&"   L C F(tk::AmpersandAmpersand, hi::Operator);
 344 "&="   L C F(tk::AmpersandEqual, hi::Operator);
 345 "^"    L C F(tk::Carrot, hi::Operator);
 346 "^="   L C F(tk::CarrotEqual, hi::Operator);
 347 "="    L C F(tk::Equal, hi::Operator);
 348 "=="   L C F(tk::EqualEqual, hi::Operator);
 349 "==="  L C F(tk::EqualEqualEqual, hi::Operator);
 350 "=>"   L C F(yyextra->newline_ ? tk::EqualRight_ : tk::EqualRight, hi::Operator);
 351 "!"    L C F(tk::Exclamation, hi::Operator);
 352 "!="   L C F(tk::ExclamationEqual, hi::Operator);
 353 "!=="  L C F(tk::ExclamationEqualEqual, hi::Operator);
 354 "-"    L C F(tk::Hyphen, hi::Operator);
 355 "-="   L C F(tk::HyphenEqual, hi::Operator);
 356 "--"   L C F(yyextra->newline_ ? tk::HyphenHyphen_ : tk::HyphenHyphen, hi::Operator);
 357 "->"   L C F(tk::HyphenRight, hi::Operator);
 358 "<"    L C F(tk::Left, hi::Operator);
 359 "<="   L C F(tk::LeftEqual, hi::Operator);
 360 "<<"   L C F(tk::LeftLeft, hi::Operator);
 361 "<<="  L C F(tk::LeftLeftEqual, hi::Operator);
 362 "%"    L C F(tk::Percent, hi::Operator);
 363 "%="   L C F(tk::PercentEqual, hi::Operator);
 364 "."    L C F(tk::Period, hi::Operator);
 365 "|"    L C F(tk::Pipe, hi::Operator);
 366 "|="   L C F(tk::PipeEqual, hi::Operator);
 367 "||"   L C F(tk::PipePipe, hi::Operator);
 368 "+"    L C F(tk::Plus, hi::Operator);
 369 "+="   L C F(tk::PlusEqual, hi::Operator);
 370 "++"   L C F(yyextra->newline_ ? tk::PlusPlus_ : tk::PlusPlus, hi::Operator);
 371 ">"    L C F(tk::Right, hi::Operator);
 372 ">="   L C F(tk::RightEqual, hi::Operator);
 373 ">>"   L C F(tk::RightRight, hi::Operator);
 374 ">>="  L C F(tk::RightRightEqual, hi::Operator);
 375 ">>>"  L C F(tk::RightRightRight, hi::Operator);
 376 ">>>=" L C F(tk::RightRightRightEqual, hi::Operator);
 377 "*"    L C F(tk::Star, hi::Operator);
 378 "*="   L C F(tk::StarEqual, hi::Operator);
 379 "~"    L C F(tk::Tilde, hi::Operator);
 380
 381 <Div,DivOrTemplateTail>"/"  L C F(tk::Slash, hi::Operator);
 382 <Div,DivOrTemplateTail>"/=" L C F(tk::SlashEqual, hi::Operator);
 383
 384 ":"    L C F(tk::Colon, hi::Structure);
 385 ","    L C F(tk::Comma, hi::Structure);
 386 "?"    L C F(tk::Question, hi::Structure);
 387 ";"    L C F(tk::SemiColon, hi::Structure);
 388
 389 "("    L C F(tk::OpenParen, hi::Structure);
 390 ")"    L C F(tk::CloseParen, hi::Structure);
 391
 392 "{"    L yyextra->template_.push(false); C F(yyextra->no_.OpenBrace ? tk::OpenBrace__ : yyextra->newline_ ? tk::OpenBrace_ : tk::OpenBrace, hi::Structure);
 393 <Div,RegExp>"}" L yyextra->template_.pop(); C F(tk::CloseBrace, hi::Structure);
 394
 395 "["    L C F(tk::OpenBracket, hi::Structure);
 396 "]"    L C F(tk::CloseBracket, hi::Structure);
 397     /* }}} */
 398     /* Keyword {{{ */
 399 "@error"          L C F(tk::At_error_, hi::Error);
 400
 401 @begin Java
 402 "@class"          L C F(tk::At_class_, hi::Meta);
 403 @end
 404
 405 @begin C
 406 "@encode"         L C F(tk::At_encode_, hi::Meta);
 407 @end
 408
 409 @begin ObjectiveC
 410 "@end"            L C F(tk::At_end_, hi::Meta);
 411 "@false"          L C F(tk::At_false_, hi::Constant);
 412 "@implementation" L C F(tk::At_implementation_, hi::Meta);
 413 "@import"         L C F(tk::At_import_, hi::Special);
 414 "@NO"             L C F(tk::At_NO_, hi::Constant);
 415 "@null"           L C F(tk::At_null_, hi::Constant);
 416 "@selector"       L C F(tk::At_selector_, hi::Meta);
 417 "@true"           L C F(tk::At_true_, hi::Constant);
 418 "@YES"            L C F(tk::At_YES_, hi::Constant);
 419 @end
 420
 421 @({UnicodeStart}{UnicodeScrap}|{UnicodeFail}) L E("invalid keyword")
 422     /* }}} */
 423     /* Highlight {{{ */
 424 "undefined"       L C F(tk::_undefined_, hi::Operator);
 425
 426 @begin ObjectiveC
 427 "bool"            L C F(tk::_bool_, hi::Type);
 428 "BOOL"            L C F(tk::_BOOL_, hi::Type);
 429 "id"              L C F(tk::_id_, hi::Type);
 430 "nil"             L C F(tk::_nil_, hi::Constant);
 431 "NULL"            L C F(tk::_NULL_, hi::Constant);
 432 "SEL"             L C F(tk::_SEL_, hi::Type);
 433 @end
 434     /* }}} */
 435     /* Reserved {{{ */
 436 "abstract"        L C /*FII*/ F(tk::_abstract_, hi::Meta);
 437 "await"           L C /*II?*/ F(tk::_await_, hi::Meta);
 438 "boolean"         L C /*FII*/ F(tk::_boolean_, hi::Type);
 439 "break"           L C /*KKK*/ F(tk::_break_, hi::Control);
 440 "byte"            L C /*FII*/ F(tk::_byte_, hi::Type);
 441 "case"            L C /*KKK*/ F(tk::_case_, hi::Control);
 442 "catch"           L C /*KKK*/ F(tk::_catch_, hi::Control);
 443 "char"            L C /*FII*/ F(tk::_char_, hi::Type);
 444 "class"           L C /*FFK*/ F(yyextra->no_.Class ? tk::_class__ : tk::_class_, hi::Meta);
 445 "const"           L C /*FFK*/ F(tk::_const_, hi::Meta);
 446 "continue"        L C /*KKK*/ F(tk::_continue_, hi::Control);
 447 "debugger"        L C /*FKK*/ F(tk::_debugger_, hi::Meta);
 448 "default"         L C /*KKK*/ F(tk::_default_, hi::Control);
 449 "delete"          L C /*KKK*/ F(tk::_delete_, hi::Operator);
 450 "do"              L C /*KKK*/ F(tk::_do_, hi::Control);
 451 "double"          L C /*FII*/ F(tk::_double_, hi::Type);
 452 "else"            L C /*KKK*/ F(tk::_else_, hi::Control);
 453 "enum"            L C /*FFF*/ F(tk::_enum_, hi::Meta);
 454 "export"          L C /*FFK*/ F(tk::_export_, hi::Meta);
 455 "extends"         L C /*FFK*/ F(tk::_extends_, hi::Meta);
 456 "false"           L C /*LLL*/ F(tk::_false_, hi::Constant);
 457 "final"           L C /*FII*/ F(tk::_final_, hi::Meta);
 458 "finally"         L C /*KKK*/ F(tk::_finally_, hi::Control);
 459 "float"           L C /*FII*/ F(tk::_float_, hi::Type);
 460 "for"             L C /*KKK*/ F(tk::_for_, hi::Control);
 461 "function"        L C /*KKK*/ F(yyextra->no_.Function ? tk::_function__ : tk::_function_, hi::Meta);
 462 "goto"            L C /*FII*/ F(tk::_goto_, hi::Control);
 463 "if"              L C /*KKK*/ F(tk::_if_, hi::Control);
 464 "implements"      L C /*FSS*/ F(tk::_implements_, hi::Meta);
 465 "import"          L C /*FFK*/ F(tk::_import_, hi::Meta);
 466 "in"              L C /*KKK*/ F(yyextra->in_.top() ? tk::_in__ : tk::_in_, hi::Operator);
 467 "instanceof"      L C /*KKK*/ F(tk::_instanceof_, hi::Operator);
 468 "int"             L C /*FII*/ F(tk::_int_, hi::Type);
 469 "interface"       L C /*FSS*/ F(tk::_interface_, hi::Meta);
 470 "let"             L C /*IS?*/ F(tk::_let_, hi::Meta);
 471 "long"            L C /*FII*/ F(tk::_long_, hi::Type);
 472 "native"          L C /*FII*/ F(tk::_native_, hi::Meta);
 473 "new"             L C /*KKK*/ F(tk::_new_, hi::Operator);
 474 "null"            L C /*LLL*/ F(tk::_null_, hi::Constant);
 475 "package"         L C /*FSS*/ F(tk::_package_, hi::Meta);
 476 "private"         L C /*FSS*/ F(tk::_private_, hi::Meta);
 477 "protected"       L C /*FSS*/ F(tk::_protected_, hi::Meta);
 478 "public"          L C /*FSS*/ F(tk::_public_, hi::Meta);
 479 "return"          L C /*KKK*/ F(tk::_return_, hi::Control);
 480 "short"           L C /*FII*/ F(tk::_short_, hi::Type);
 481 "static"          L C /*FS?*/ F(tk::_static_, hi::Meta);
 482 "super"           L C /*FFK*/ F(tk::_super_, hi::Constant);
 483 "switch"          L C /*KKK*/ F(tk::_switch_, hi::Control);
 484 "synchronized"    L C /*FII*/ F(tk::_synchronized_, hi::Meta);
 485 "this"            L C /*KKK*/ F(tk::_this_, hi::Constant);
 486 "throw"           L C /*KKK*/ F(tk::_throw_, hi::Control);
 487 "throws"          L C /*FII*/ F(tk::_throws_, hi::Meta);
 488 "transient"       L C /*FII*/ F(tk::_transient_, hi::Meta);
 489 "true"            L C /*LLL*/ F(tk::_true_, hi::Constant);
 490 "try"             L C /*KKK*/ F(tk::_try_, hi::Control);
 491 "typeof"          L C /*KKK*/ F(tk::_typeof_, hi::Operator);
 492 "var"             L C /*KKK*/ F(tk::_var_, hi::Meta);
 493 "void"            L C /*KKK*/ F(tk::_void_, hi::Operator);
 494 "volatile"        L C /*FII*/ F(tk::_volatile_, hi::Meta);
 495 "while"           L C /*KKK*/ F(tk::_while_, hi::Control);
 496 "with"            L C /*KKK*/ F(tk::_with_, hi::Control);
 497 "yield"           L C /*IS?*/ F(tk::_yield_, hi::Control);
 498
 499 "auto"            L C F(tk::_auto_, hi::Meta);
 500 "each"            L C F(tk::_each_, hi::Control);
 501 "of"              L C F(tk::_of_, hi::Operator);
 502
 503 @begin C
 504 "extern"          L C F(tk::_extern_, hi::Type);
 505 "signed"          L C F(tk::_signed_, hi::Type);
 506 "typedef"         L C F(tk::_typedef_, hi::Meta);
 507 "unsigned"        L C F(tk::_unsigned_, hi::Type);
 508 @end
 509
 510 @begin ObjectiveC
 511 "NO"              L C F(tk::_NO_, hi::Constant);
 512 "YES"             L C F(tk::_YES_, hi::Constant);
 513 @end
 514
 515 @begin E4X
 516 "namespace"       L C F(tk::_namespace_, hi::Meta);
 517 "xml"             L C F(tk::_xml_, hi::Meta);
 518 @end
 519     /* }}} */
 520     /* Identifier {{{ */
 521 {UnicodeStart}{UnicodePart}* L C I(identifier, Identifier(Y), tk::Identifier_, hi::Identifier);
 522
 523 {IdentifierStart}{IdentifierPart}* L C {
 524     char *value(A char[yyleng + 1]);
 525     char *local(value);
 526
 527     for (yy_size_t i(0), e(yyleng); i != e; ++i) {
 528         char next(yytext[i]);
 529         if (next != '\\')
 530             *local++ = next;
 531         else
 532             U(local, yytext, ++i);
 533     }
 534
 535     *local = '\0';
 536     I(identifier, Identifier(value), tk::Identifier_, hi::Identifier);
 537 }
 538
 539 ({IdentifierStart}{IdentifierPart}*)?{IdentifierFail} L E("invalid identifier")
 540     /* }}} */
 541     /* Number {{{ */
 542 0[0-7]+ L C I(number, Number(strtoull(yytext + 1, NULL, 8)), tk::NumericLiteral, hi::Constant);
 543 0[0-9]+ L C I(number, Number(strtoull(yytext + 1, NULL, 10)), tk::NumericLiteral, hi::Constant);
 544
 545 0[xX][0-9a-fA-F]+ L C I(number, Number(strtoull(yytext + 2, NULL, 16)), tk::NumericLiteral, hi::Constant);
 546 0[oO][0-7]+ L C I(number, Number(strtoull(yytext + 2, NULL, 8)), tk::NumericLiteral, hi::Constant);
 547 0[bB][0-1]+ L C I(number, Number(strtoull(yytext + 2, NULL, 2)), tk::NumericLiteral, hi::Constant);
 548
 549 (\.[0-9]+|(0|[1-9][0-9]*)(\.[0-9]*)?)([eE][+-]?[0-9]+)? L C I(number, Number(strtod(yytext, NULL)), tk::NumericLiteral, hi::Constant);
 550 (\.[0-9]+|(0|[1-9][0-9]*)(\.[0-9]*)?)[eE][+-]?{IdentifierScrap} L E("invalid exponent")
 551 (\.?[0-9]|(0|[1-9][0-9]*)\.){IdentifierScrap} L E("invalid number")
 552     /* }}} */
 553     /* String {{{ */
 554 \' L CYLexBufferStart(LegacySingleString);
 555 <LegacySingleString,StrictSingleString>{
 556     \' R CYLexBufferEnd(string, String, tk::StringLiteral, hi::Constant);
 557     {SingleCharacter}+ R CYLexBufferUnits(yytext, yyleng);
 558     {SingleCharacter}*{UnicodeFail} R E("invalid character");
 559     {LineTerminatorSequence} R E("invalid newline");
 560 }
 561
 562 \" L CYLexBufferStart(LegacyDoubleString);
 563 <LegacyDoubleString,StrictDoubleString>{
 564     \" R CYLexBufferEnd(string, String, tk::StringLiteral, hi::Constant);
 565     {DoubleCharacter}+ R CYLexBufferUnits(yytext, yyleng);
 566     {DoubleCharacter}*{UnicodeFail} R E("invalid character");
 567     {LineTerminatorSequence} R E("invalid newline");
 568 }
 569     /* }}} */
 570     /* Template {{{ */
 571 "`" L yyextra->tail_ = false; CYLexBufferStart(StrictAccentString);
 572 <DivOrTemplateTail,RegExpOrTemplateTail>"}" L yyextra->tail_ = true; yyextra->template_.pop(); CYLexBufferStart(StrictAccentString);
 573
 574 <StrictAccentString>{
 575     "`" R CYLexBufferEnd(string, String, yyextra->tail_ ? tk::TemplateTail : tk::NoSubstitutionTemplate, hi::Constant);
 576     "${" R yyextra->template_.push(true); CYLexBufferEnd(string, String, yyextra->tail_ ? tk::TemplateMiddle : tk::TemplateHead, hi::Constant);
 577
 578     "$" R CYLexBufferUnit('$');
 579
 580     {PlateCharacter}+ R CYLexBufferUnits(yytext, yyleng);
 581     {PlateCharacter}*{UnicodeFail} R E("invalid character");
 582     {LineTerminatorSequence} R E("invalid newline");
 583 }
 584     /* }}} */
 585     /* Escapes {{{ */
 586 <LegacySingleString,LegacyDoubleString>{
 587     \\[0-3][0-7][0-7] R CYLexBufferPoint(X(yytext[1]) << 6 | X(yytext[2]) << 3 | X(yytext[3]));
 588     \\[0-7][0-7] R CYLexBufferUnit(X(yytext[1]) << 3 | X(yytext[2]));
 589     \\[0-7] R CYLexBufferUnit(X(yytext[1]));
 590 }
 591
 592 <StrictSingleString,StrictDoubleString,StrictAccentString>{
 593     \\0[0-7] R E("legacy escape");
 594     \\0 R CYLexBufferUnit('\0');
 595 }
 596
 597 <LegacySingleString,LegacyDoubleString,StrictSingleString,StrictDoubleString,StrictAccentString>{
 598     \\b R CYLexBufferUnit('\b');
 599     \\f R CYLexBufferUnit('\f');
 600     \\n R CYLexBufferUnit('\n');
 601     \\r R CYLexBufferUnit('\r');
 602     \\t R CYLexBufferUnit('\t');
 603     \\v R CYLexBufferUnit('\v');
 604
 605     \\x{HexDigit}{2} R CYLexBufferPoint(X(yytext[2]) << 4 | X(yytext[3]));
 606
 607     \\u{HexDigit}{4} R CYLexBufferPoint(X(yytext[2]) << 12 | X(yytext[3]) << 8 | X(yytext[4]) << 4 | X(yytext[5]));
 608
 609     \\u\{{HexDigit}+\} R {
 610         unsigned point(0);
 611         for (yy_size_t i(3); i != yyleng - 1; ++i)
 612             point = point << 4 | X(yytext[i]);
 613         CYLexBufferPoint(point);
 614     }
 615
 616     \\{LineTerminatorSequence} yylloc->end.lines();
 617     \\(.|{NotLineTerminator}) R CYLexBufferUnits(yytext + 1, yyleng - 1);
 618
 619     \\(x{HexDigit}{0,1}|u({HexDigit}{0,3}|\{{HexDigit}*)|{UnicodeFail})? R E("invalid escape");
 620     <<EOF>> R E("invalid string");
 621 }
 622     /* }}} */
 623
 624 {LineTerminatorSequence} yylloc->step(); yylloc->end.lines(); yyextra->last_ = true; N
 625 {WhiteSpace} L
 626
 627 <<EOF>> if (yyextra->auto_) { yyextra->auto_ = false; F(tk::AutoComplete, hi::Nothing); } L yyterminate();
 628
 629 . L E("invalid character")
 630
 631 %%
 632
 633 void CYDriver::ScannerInit() {
 634     cylex_init(&scanner_);
 635     cyset_extra(this, scanner_);
 636 }
 637
 638 void CYDriver::ScannerDestroy() {
 639     cylex_destroy(scanner_);
 640 }
 641
 642 void CYDriver::SetCondition(Condition condition) {
 643     struct yyguts_t *yyg(reinterpret_cast<struct yyguts_t *>(scanner_));
 644
 645     switch (condition) {
 646         case RegExpCondition:
 647             BEGIN(template_.top() ? RegExpOrTemplateTail : RegExp);
 648             break;
 649 @begin E4X
 650         case XMLContentCondition:
 651             BEGIN(XMLContent);
 652             break;
 653         case XMLTagCondition:
 654             BEGIN(XMLTag);
 655             break;
 656 @end
 657         default:
 658             _assert(false);
 659     }
 660 }
 661
 662 void CYDriver::PushCondition(Condition condition) {
 663     switch (condition) {
 664         case RegExpCondition:
 665             yy_push_state(RegExp, scanner_);
 666             break;
 667 @begin E4X
 668         case XMLContentCondition:
 669             yy_push_state(XMLContent, scanner_);
 670             break;
 671         case XMLTagCondition:
 672             yy_push_state(XMLTag, scanner_);
 673             break;
 674 @end
 675         default:
 676             _assert(false);
 677     }
 678 }
 679
 680 void CYDriver::PopCondition() {
 681     yy_pop_state(scanner_);
 682 }
 683
 684 #if defined(__clang__)
 685 #pragma clang diagnostic pop
 686 #else
 687 // must not pop -Wunused-function
 688 //#pragma GCC diagnostic pop
 689 #endif