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 /* XXX: supposedly I will be screwed on very very long multi-line comments and need to replace these with a manual lexer. http://websrv.cs.fsu.edu/~engelen/courses/COP5621/Pr2.pdf */
  23
  24 %{
  25
  26 #if defined(__clang__)
  27 #pragma clang diagnostic push
  28 #pragma clang diagnostic ignored "-Wunknown-pragmas"
  29 #pragma clang diagnostic ignored "-Wdeprecated-register"
  30 #endif
  31
  32 #define YYLTYPE CYLocation
  33 #include "Cycript.tab.hh"
  34 typedef cy::parser::token tk;
  35
  36 #include "Highlight.hpp"
  37
  38 #define YY_EXTRA_TYPE CYDriver *
  39
  40 // do /not/ fold token to the return: this is a macro and the ordering is dependent
  41 #define F(value, highlight) do { \
  42     int token(value); \
  43 @begin ObjectiveC
  44     yyextra->no_.AtImplementation = false; \
  45 @end
  46     yyextra->no_.Function = false; \
  47     yyextra->no_.OpenBrace = false; \
  48     yylval->highlight_ = highlight; \
  49     return token; \
  50 } while (false)
  51
  52 #define A new($pool)
  53 #define Y $pool.strmemdup(yytext, yyleng)
  54
  55 #define I(type, Type, value, highlight) do { \
  56     yylval->type ## _ = A CY ## Type; \
  57     F(value, highlight); \
  58 } while (false)
  59
  60 #define T yylval->newline_ = yyextra->state_ == CYNewLine; BEGIN(Div);
  61 #define C T yyextra->state_ = CYClear;
  62 #define R T yyextra->state_ = CYRestricted;
  63
  64 #define N \
  65     if (yyextra->state_ != CYNewLine) { \
  66         if (yyextra->state_ != CYRestricted) \
  67             yyextra->state_ = CYNewLine; \
  68         else { \
  69             yyextra->state_ = CYClear; \
  70             F(tk::NewLine, hi::Nothing); \
  71         } \
  72     }
  73
  74 #define V(more) { \
  75     if (const char *nl = reinterpret_cast<const char *>(memchr(yytext, '\n', yyleng))) { \
  76         unsigned lines(0); \
  77         size_t left; \
  78         do { \
  79             ++lines; \
  80             left = yyleng - (nl - yytext) - 1; \
  81             nl = reinterpret_cast<const char *>(memchr(nl + 1, '\n', left)); \
  82         } while (nl != NULL); \
  83         yylloc->step(); \
  84         yylloc->end.lines(lines); \
  85         yylloc->end.columns(left); \
  86         more \
  87     } else L \
  88 }
  89
  90 #define L { \
  91     yylloc->step(); \
  92     yylloc->end.columns(yyleng); \
  93 }
  94
  95 #define M { \
  96     if (yyextra->commented_) { \
  97         I(comment, Comment(Y), tk::Comment, hi::Comment); \
  98     } \
  99 }
 100
 101 #define E(message) { \
 102     CYDriver::Error error; \
 103     error.location_ = *yylloc; \
 104     error.message_ = "syntax error, " message; \
 105     yyextra->errors_.push_back(error); \
 106     yyterminate(); \
 107 }
 108
 109 int H(char c) {
 110     if (c >= '0' && c <= '9')
 111         return c - '0';
 112     if (c >= 'a' && c <= 'f')
 113         return c - 'a' + 10;
 114     if (c >= 'A' && c <= 'F')
 115         return c - 'A' + 10;
 116     return -1;
 117 }
 118
 119 #define YY_INPUT(data, value, size) { \
 120     if (yyextra->data_.eof()) \
 121         value = YY_NULL; \
 122     else { \
 123         yyextra->data_.read(data, size); \
 124         size_t copy(yyextra->data_.gcount()); \
 125         value = copy == 0 ? YY_NULL : copy; \
 126     } \
 127 }
 128
 129 %}
 130
 131 %option prefix="cy"
 132 %option bison-bridge
 133 %option bison-locations
 134 %option nodefault
 135 %option noyywrap
 136 %option noyylineno
 137 %option nounput
 138 %option nounistd
 139 %option 8bit
 140 %option backup
 141 %option batch
 142 %option never-interactive
 143 %option pointer
 144 %option reentrant
 145 %option stack
 146
 147 %option full
 148 %option ecs
 149 %option align
 150
 151 Escape   \\[\\'"bfnrtv]|\\0|\\x[0-9a-fA-F]{2}|\\u[0-9a-fA-F]{4}|\\\n
 152
 153 IdentifierStart [a-zA-Z$_]
 154 IdentifierPart  [a-zA-Z$_0-9]
 155
 156 NonTerminator [^\n]
 157 BackslashSequence \\{NonTerminator}
 158 RegularExpressionFirstChar [^\n*\\/]|{BackslashSequence}
 159 RegularExpressionChar [^\n\\/]|{BackslashSequence}
 160 RegularExpressionFlags {IdentifierPart}*
 161 RegularExpressionChars {RegularExpressionChar}*
 162 RegularExpressionBody {RegularExpressionFirstChar}{RegularExpressionChars}
 163
 164 @begin E4X
 165 XMLNameStart [a-zA-Z_:]
 166 XMLNamePart [a-zA-Z0-9.-_:]
 167 XMLName {XMLNameStart}{XMLNamePart}*
 168 @end
 169
 170 %s Div
 171 %s RegExp
 172
 173 @begin E4X
 174 %x XMLContent
 175 %x XMLTag
 176 @end
 177
 178 %%
 179
 180 <RegExp>\/{RegularExpressionBody}\/{RegularExpressionFlags} L C I(literal, RegEx(Y), tk::RegularExpressionLiteral, hi::Constant);
 181 <RegExp>\/{RegularExpressionBody}?\\? L E("unterminated regex")
 182
 183 #![^\n]* L M
 184
 185 \/\/[^\n]* L M
 186
 187         /* http://ostermiller.org/findcomment.html */
 188         /* XXX: unify these two rules using !? */
 189 \/\*!([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\*+\/ V() C I(comment, Comment(Y), tk::Comment, hi::Comment);
 190 \/\*([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\*+\/ V(N) M
 191 \/\*([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\** V() E("invalid comment")
 192
 193 @begin E4X
 194 <RegExp>"<>"      L F(tk::LeftRight, hi::Structure);
 195 <XMLContent>"</>" L F(tk::LeftSlashRight, hi::Structure);
 196
 197 <RegExp,XMLContent>\<!\[CDATA\[(\n|[^[]|\[[^[]|\[\[[^>])*]]> V() F(tk::XMLCDATA, hi::Constant);
 198 <RegExp,XMLContent>\<!--(\n|[^-]|-[^-])*--> V() F(tk::XMLComment, hi::Comment);
 199 <RegExp,XMLContent>\<?(\n|[^?]|\?[^>])*?> V() F(tk::XMLPI, hi::Meta);
 200
 201 <XMLTag>"="  L F(tk::Equal, hi::Structure);
 202 <XMLTag>">"  L F(tk::Right, hi::Structure);
 203 <XMLTag>"/>" L F(tk::SlashRight, hi::Structure);
 204 <XMLTag>"{"  L F(tk::OpenBrace, hi::Structure);
 205
 206 <XMLTag>\"(\n|[^"])*\"|'(\n|[^'])*' V() F(tk::XMLAttributeValue, hi::Constant);
 207 <XMLTag>{XMLName} L F(tk::XMLName, hi::Identifier);
 208 <XMLTag>[ \t\r\n] V() F(tk::XMLWhitespace, hi::Nothing);
 209
 210 <XMLContent>"{"  L F(tk::OpenBrace, hi::Structure);
 211 <XMLContent>"<"  L F(tk::Left, hi::Structure);
 212 <XMLContent>"</" L F(tk::LeftSlash, hi::Structure);
 213 @end
 214
 215 "..."  L C F(tk::PeriodPeriodPeriod, hi::Meta);
 216 ".."   L E("invalid operator")
 217
 218 @begin E4X
 219 "::"   L C F(tk::ColonColon, hi::Operator);
 220 ".."   L C F(tk::PeriodPeriod, hi::Operator);
 221 @end
 222
 223 @begin E4X ObjectiveC
 224 "@"    L C F(tk::At, hi::Operator);
 225 "#"    L C F(tk::Pound, hi::Operator);
 226 @end
 227
 228 "&"    L C F(tk::Ampersand, hi::Operator);
 229 "&&"   L C F(tk::AmpersandAmpersand, hi::Operator);
 230 "&="   L C F(tk::AmpersandEqual, hi::Operator);
 231 "^"    L C F(tk::Carrot, hi::Operator);
 232 "^="   L C F(tk::CarrotEqual, hi::Operator);
 233 "="    L C F(tk::Equal, hi::Operator);
 234 "=="   L C F(tk::EqualEqual, hi::Operator);
 235 "==="  L C F(tk::EqualEqualEqual, hi::Operator);
 236 "=>"   L C F(tk::EqualRight, hi::Operator);
 237 "!"    L C F(tk::Exclamation, hi::Operator);
 238 "!="   L C F(tk::ExclamationEqual, hi::Operator);
 239 "!=="  L C F(tk::ExclamationEqualEqual, hi::Operator);
 240 "-"    L C F(tk::Hyphen, hi::Operator);
 241 "-="   L C F(tk::HyphenEqual, hi::Operator);
 242 "--"   L C F(yylval->newline_ ? tk::HyphenHyphen_ : tk::HyphenHyphen, hi::Operator);
 243 "->"   L C F(tk::HyphenRight, hi::Operator);
 244 "<"    L C F(tk::Left, hi::Operator);
 245 "<="   L C F(tk::LeftEqual, hi::Operator);
 246 "<<"   L C F(tk::LeftLeft, hi::Operator);
 247 "<<="  L C F(tk::LeftLeftEqual, hi::Operator);
 248 "%"    L C F(tk::Percent, hi::Operator);
 249 "%="   L C F(tk::PercentEqual, hi::Operator);
 250 "."    L C F(tk::Period, hi::Operator);
 251 "|"    L C F(tk::Pipe, hi::Operator);
 252 "|="   L C F(tk::PipeEqual, hi::Operator);
 253 "||"   L C F(tk::PipePipe, hi::Operator);
 254 "+"    L C F(tk::Plus, hi::Operator);
 255 "+="   L C F(tk::PlusEqual, hi::Operator);
 256 "++"   L C F(yylval->newline_ ? tk::PlusPlus_ : tk::PlusPlus, hi::Operator);
 257 ">"    L C F(tk::Right, hi::Operator);
 258 ">="   L C F(tk::RightEqual, hi::Operator);
 259 ">>"   L C F(tk::RightRight, hi::Operator);
 260 ">>="  L C F(tk::RightRightEqual, hi::Operator);
 261 ">>>"  L C F(tk::RightRightRight, hi::Operator);
 262 ">>>=" L C F(tk::RightRightRightEqual, hi::Operator);
 263 "*"    L C F(tk::Star, hi::Operator);
 264 "*="   L C F(tk::StarEqual, hi::Operator);
 265 "~"    L C F(tk::Tilde, hi::Operator);
 266
 267 <Div>"/"  L C F(tk::Slash, hi::Operator);
 268 <Div>"/=" L C F(tk::SlashEqual, hi::Operator);
 269
 270 ":"    L C F(tk::Colon, hi::Structure);
 271 ","    L C F(tk::Comma, hi::Structure);
 272 "?"    L C F(tk::Question, hi::Structure);
 273 ";"    L C F(tk::SemiColon, hi::Structure);
 274
 275 "("    L C F(tk::OpenParen, hi::Structure);
 276 ")"    L C F(tk::CloseParen, hi::Structure);
 277
 278 "{"    L C F(yyextra->no_.OpenBrace ? tk::OpenBrace__ : yylval->newline_ ? tk::OpenBrace_ : tk::OpenBrace, hi::Structure);
 279 "}"    L C F(tk::CloseBrace, hi::Structure);
 280
 281 "["    L C F(tk::OpenBracket, hi::Structure);
 282 "]"    L C F(tk::CloseBracket, hi::Structure);
 283
 284 "@error"          L C F(tk::AtError, hi::Error);
 285
 286 @begin Java
 287 "@class"          L C F(tk::AtClass, hi::Meta);
 288 @end
 289
 290 @begin C
 291 "typedef"         L C I(identifier, Identifier("typedef"), tk::Typedef, hi::Meta);
 292 "unsigned"        L C I(identifier, Identifier("unsigned"), tk::Unsigned, hi::Type);
 293 "signed"          L C I(identifier, Identifier("signed"), tk::Signed, hi::Type);
 294 "extern"          L C I(identifier, Identifier("extern"), tk::Extern, hi::Type);
 295 @end
 296
 297 @begin C
 298 "@encode"         L C F(tk::AtEncode, hi::Meta);
 299 @end
 300
 301 @begin ObjectiveC
 302 "@end"            L C F(tk::AtEnd, hi::Meta);
 303 "@implementation" L C F(yyextra->no_.AtImplementation ? tk::AtImplementation_ : tk::AtImplementation, hi::Meta);
 304 "@import"         L C F(tk::AtImport, hi::Special);
 305 "@selector"       L C F(tk::AtSelector, hi::Meta);
 306
 307 "NULL"         L C I(identifier, Identifier("NULL"), tk::Identifier_, hi::Constant);
 308 "nil"          L C I(identifier, Identifier("nil"), tk::Identifier_, hi::Constant);
 309 "YES"          L C I(identifier, Identifier("YES"), tk::Yes, hi::Constant);
 310 "NO"           L C I(identifier, Identifier("NO"), tk::No, hi::Constant);
 311
 312 "bool"         L C I(identifier, Identifier("bool"), tk::Identifier_, hi::Type);
 313 "BOOL"         L C I(identifier, Identifier("BOOL"), tk::Identifier_, hi::Type);
 314 "id"           L C I(identifier, Identifier("id"), tk::Identifier_, hi::Type);
 315 "SEL"          L C I(identifier, Identifier("SEL"), tk::Identifier_, hi::Type);
 316 @end
 317
 318 "undefined"    L C I(identifier, Identifier("undefined"), tk::Identifier_, hi::Operator);
 319
 320 "false"        L C I(false, False(), tk::False, hi::Constant);
 321 "null"         L C I(null, Null(), tk::Null, hi::Constant);
 322 "true"         L C I(true, True(), tk::True, hi::Constant);
 323
 324 "auto"         L C I(word, Word("auto"), tk::Auto, hi::Meta);
 325 "break"        L R I(word, Word("break"), tk::Break, hi::Control);
 326 "case"         L C I(word, Word("case"), tk::Case, hi::Control);
 327 "catch"        L C I(word, Word("catch"), tk::Catch, hi::Control);
 328 "continue"     L R I(word, Word("continue"), tk::Continue, hi::Control);
 329 "default"      L C I(word, Word("default"), tk::Default, hi::Control);
 330 "delete"       L C I(word, Word("delete"), tk::Delete, hi::Operator);
 331 "do"           L C I(word, Word("do"), tk::Do, hi::Control);
 332 "else"         L C I(word, Word("else"), tk::Else, hi::Control);
 333 "finally"      L C I(word, Word("finally"), tk::Finally, hi::Control);
 334 "for"          L C I(word, Word("for"), tk::For, hi::Control);
 335 "function"     L C I(word, Word("function"), yyextra->no_.Function ? tk::Function_ : tk::Function, hi::Meta);
 336 "if"           L C I(word, Word("if"), tk::If, hi::Control);
 337 "in"           L C I(word, Word("in"), yyextra->in_.top() ? tk::In_ : tk::In, hi::Operator);
 338 "instanceof"   L C I(word, Word("instanceof"), tk::InstanceOf, hi::Operator);
 339 "new"          L C I(word, Word("new"), tk::New, hi::Operator);
 340 "return"       L R I(word, Word("return"), tk::Return, hi::Control);
 341 "switch"       L C I(word, Word("switch"), tk::Switch, hi::Control);
 342 "this"         L C I(this, This(), tk::This, hi::Constant);
 343 "throw"        L R I(word, Word("throw"), tk::Throw, hi::Control);
 344 "try"          L C I(word, Word("try"), tk::Try, hi::Control);
 345 "typeof"       L C I(word, Word("typeof"), tk::TypeOf, hi::Operator);
 346 "var"          L C I(word, Word("var"), tk::Var, hi::Meta);
 347 "void"         L C I(word, Word("void"), tk::Void, hi::Operator);
 348 "while"        L C I(word, Word("while"), tk::While, hi::Control);
 349 "with"         L C I(word, Word("with"), tk::With, hi::Control);
 350
 351 "debugger"     L C I(word, Word("debugger"), tk::Debugger, hi::Meta);
 352
 353 "const"        L C I(word, Word("const"), tk::Const, hi::Meta);
 354
 355 "class"        L C I(word, Word("class"), tk::Class, hi::Meta);
 356 "enum"         L C I(word, Word("enum"), tk::Enum, hi::Meta);
 357 "export"       L C I(word, Word("export"), tk::Export, hi::Meta);
 358 "extends"      L C I(word, Word("extends"), tk::Extends, hi::Meta);
 359 "import"       L C I(word, Word("import"), tk::Import, hi::Meta);
 360 "super"        L C I(word, Word("super"), tk::Super, hi::Constant);
 361
 362 "implements"   L C I(identifier, Identifier("implements"), tk::Implements, hi::Meta);
 363 "interface"    L C I(identifier, Identifier("interface"), tk::Interface, hi::Meta);
 364 "package"      L C I(identifier, Identifier("package"), tk::Package, hi::Meta);
 365 "private"      L C I(identifier, Identifier("private"), tk::Private, hi::Meta);
 366 "protected"    L C I(identifier, Identifier("protected"), tk::Protected, hi::Meta);
 367 "public"       L C I(identifier, Identifier("public"), tk::Public, hi::Meta);
 368 "static"       L C I(identifier, Identifier("static"), tk::Static, hi::Meta);
 369
 370 "abstract"     L C I(identifier, Identifier("abstract"), tk::Abstract, hi::Meta);
 371 "boolean"      L C I(identifier, Identifier("boolean"), tk::Boolean, hi::Type);
 372 "byte"         L C I(identifier, Identifier("byte"), tk::Byte, hi::Type);
 373 "char"         L C I(identifier, Identifier("char"), tk::Char, hi::Type);
 374 "double"       L C I(identifier, Identifier("double"), tk::Double, hi::Type);
 375 "final"        L C I(identifier, Identifier("final"), tk::Final, hi::Meta);
 376 "float"        L C I(identifier, Identifier("float"), tk::Float, hi::Type);
 377 "goto"         L C I(identifier, Identifier("goto"), tk::Goto, hi::Control);
 378 "int"          L C I(identifier, Identifier("int"), tk::Int, hi::Type);
 379 "long"         L C I(identifier, Identifier("long"), tk::Long, hi::Type);
 380 "native"       L C I(identifier, Identifier("native"), tk::Native, hi::Meta);
 381 "short"        L C I(identifier, Identifier("short"), tk::Short, hi::Type);
 382 "synchronized" L C I(identifier, Identifier("synchronized"), tk::Synchronized, hi::Meta);
 383 "throws"       L C I(identifier, Identifier("throws"), tk::Throws, hi::Meta);
 384 "transient"    L C I(identifier, Identifier("transient"), tk::Transient, hi::Meta);
 385 "volatile"     L C I(identifier, Identifier("volatile"), tk::Volatile, hi::Meta);
 386
 387 "let"          L C I(identifier, Identifier("let"), tk::Let, hi::Meta);
 388 "yield"        L C I(identifier, Identifier("yield"), tk::Yield, hi::Control);
 389
 390 "each"         L C I(identifier, Identifier("each"), tk::Each, hi::Control);
 391 "of"           L C I(identifier, Identifier("of"), tk::Of, hi::Operator);
 392
 393 @begin E4X
 394 "namespace"    L C I(identifier, Identifier("namespace"), tk::Namespace, hi::Meta);
 395 "xml"          L C I(identifier, Identifier("xml"), tk::XML, hi::Meta);
 396 @end
 397
 398 {IdentifierStart}{IdentifierPart}* L C I(identifier, Identifier(Y), tk::Identifier_, hi::Identifier);
 399
 400
 401 0[xX][0-9a-fA-F]+ L C I(number, Number(strtoull(yytext + 2, NULL, 16)), tk::NumericLiteral, hi::Constant);
 402 0[0-7]+ L C I(number, Number(strtoull(yytext + 1, NULL, 8)), tk::NumericLiteral, hi::Constant);
 403 0[bB][0-1]+ L C I(number, Number(strtoull(yytext + 2, NULL, 2)), tk::NumericLiteral, hi::Constant);
 404
 405 (\.[0-9]+|(0|[1-9][0-9]*)(\.[0-9]*)?)([eE][+-]?[0-9]+)? L C I(number, Number(strtod(yytext, NULL)), tk::NumericLiteral, hi::Constant);
 406 (\.[0-9]+|(0|[1-9][0-9]*)(\.[0-9]*)?)[eE][+-]?{IdentifierPart}* L E("invalid exponent")
 407 (\.?[0-9]|(0|[1-9][0-9]*)\.){IdentifierPart}* L E("invalid number")
 408
 409 \"([^"\\\n]|{Escape})*\"|'([^'\\\n]|{Escape})*' L C {
 410     char *value(A char[yyleng]);
 411     char *local(value);
 412
 413     for (yy_size_t i(1), e(yyleng - 1); i != e; ++i) {
 414         char next(yytext[i]);
 415
 416         if (yytext[i] == '\\')
 417             switch (next = yytext[++i]) {
 418                 case '\n': continue;
 419                 case '\\': next = '\\'; break;
 420                 case '\'': next = '\''; break;
 421                 case '"': next = '"'; break;
 422                 case 'b': next = '\b'; break;
 423                 case 'f': next = '\f'; break;
 424                 case 'n': next = '\n'; break;
 425                 case 'r': next = '\r'; break;
 426                 case 't': next = '\t'; break;
 427                 case 'v': next = '\v'; break;
 428                 case '0': next = '\0'; break;
 429
 430                 case 'x':
 431                     next = H(yytext[i + 1]) << 4 | H(yytext[i + 2]);
 432                     i += 2;
 433                 break;
 434             }
 435
 436         *local++ = next;
 437     }
 438
 439     *local = '\0';
 440     I(string, String(value, local - value), tk::StringLiteral, hi::Constant);
 441 }
 442
 443 (\"([^"\\\n]|{Escape})*|'([^'\\\n]|{Escape})*)(\\(x.{0,2}|u.{0,4})?)? L E("invalid escape")
 444
 445 \r?\n|\r|\xe2\x80[\xa8\xa9] yylloc->step(); yylloc->end.lines(); N
 446
 447 [ \t] L
 448
 449 <<EOF>> if (yyextra->auto_) { yyextra->auto_ = false; F(tk::AutoComplete, hi::Nothing); } L yyterminate();
 450
 451 @{IdentifierPart}+|\xe2.|. L E("unknown token")
 452
 453 %%
 454
 455 void CYDriver::ScannerInit() {
 456     cylex_init(&scanner_);
 457     cyset_extra(this, scanner_);
 458 }
 459
 460 void CYDriver::ScannerDestroy() {
 461     cylex_destroy(scanner_);
 462 }
 463
 464 CYDriver::Condition CYDriver::GetCondition() {
 465     switch (yy_top_state(scanner_)) {
 466         case RegExp:
 467             return RegExpCondition;
 468 @begin E4X
 469         case XMLContent:
 470             return XMLContentCondition;
 471         case XMLTag:
 472             return XMLTagCondition;
 473 @end
 474         default:
 475             _assert(false);
 476     }
 477 }
 478
 479 void CYDriver::SetCondition(Condition condition) {
 480     struct yyguts_t *yyg(reinterpret_cast<struct yyguts_t *>(scanner_));
 481
 482     switch (condition) {
 483         case RegExpCondition:
 484             BEGIN(RegExp);
 485             break;
 486 @begin E4X
 487         case XMLContentCondition:
 488             BEGIN(XMLContent);
 489             break;
 490         case XMLTagCondition:
 491             BEGIN(XMLTag);
 492             break;
 493 @end
 494         default:
 495             _assert(false);
 496     }
 497 }
 498
 499 void CYDriver::PushCondition(Condition condition) {
 500     switch (condition) {
 501         case RegExpCondition:
 502             yy_push_state(RegExp, scanner_);
 503             break;
 504 @begin E4X
 505         case XMLContentCondition:
 506             yy_push_state(XMLContent, scanner_);
 507             break;
 508         case XMLTagCondition:
 509             yy_push_state(XMLTag, scanner_);
 510             break;
 511 @end
 512         default:
 513             _assert(false);
 514     }
 515 }
 516
 517 void CYDriver::PopCondition() {
 518     yy_pop_state(scanner_);
 519 }
 520
 521 #if defined(__clang__)
 522 #pragma clang diagnostic pop
 523 #endif