dlls/jscript/parser.y

   1 /*
   2  * Copyright 2008 Jacek Caban for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 %{
  20
  21 #include "jscript.h"
  22 #include "engine.h"
  23
  24 #define YYLEX_PARAM ctx
  25 #define YYPARSE_PARAM ctx
  26
  27 static int parser_error(const char*);
  28 static void set_error(parser_ctx_t*,UINT);
  29 static BOOL explicit_error(parser_ctx_t*,void*,WCHAR);
  30 static BOOL allow_auto_semicolon(parser_ctx_t*);
  31 static void program_parsed(parser_ctx_t*,source_elements_t*);
  32 static source_elements_t *function_body_parsed(parser_ctx_t*,source_elements_t*);
  33
  34 typedef struct _statement_list_t {
  35     statement_t *head;
  36     statement_t *tail;
  37 } statement_list_t;
  38
  39 static literal_t *new_string_literal(parser_ctx_t*,const WCHAR*);
  40 static literal_t *new_null_literal(parser_ctx_t*);
  41
  42 typedef struct _property_list_t {
  43     prop_val_t *head;
  44     prop_val_t *tail;
  45 } property_list_t;
  46
  47 static property_list_t *new_property_list(parser_ctx_t*,literal_t*,expression_t*);
  48 static property_list_t *property_list_add(parser_ctx_t*,property_list_t*,literal_t*,expression_t*);
  49
  50 typedef struct _element_list_t {
  51     array_element_t *head;
  52     array_element_t *tail;
  53 } element_list_t;
  54
  55 static element_list_t *new_element_list(parser_ctx_t*,int,expression_t*);
  56 static element_list_t *element_list_add(parser_ctx_t*,element_list_t*,int,expression_t*);
  57
  58 typedef struct _argument_list_t {
  59     argument_t *head;
  60     argument_t *tail;
  61 } argument_list_t;
  62
  63 static argument_list_t *new_argument_list(parser_ctx_t*,expression_t*);
  64 static argument_list_t *argument_list_add(parser_ctx_t*,argument_list_t*,expression_t*);
  65
  66 typedef struct _case_list_t {
  67     case_clausule_t *head;
  68     case_clausule_t *tail;
  69 } case_list_t;
  70
  71 static catch_block_t *new_catch_block(parser_ctx_t*,const WCHAR*,statement_t*);
  72 static case_clausule_t *new_case_clausule(parser_ctx_t*,expression_t*,statement_list_t*);
  73 static case_list_t *new_case_list(parser_ctx_t*,case_clausule_t*);
  74 static case_list_t *case_list_add(parser_ctx_t*,case_list_t*,case_clausule_t*);
  75 static case_clausule_t *new_case_block(parser_ctx_t*,case_list_t*,case_clausule_t*,case_list_t*);
  76
  77 typedef struct _variable_list_t {
  78     variable_declaration_t *head;
  79     variable_declaration_t *tail;
  80 } variable_list_t;
  81
  82 static variable_declaration_t *new_variable_declaration(parser_ctx_t*,const WCHAR*,expression_t*);
  83 static variable_list_t *new_variable_list(parser_ctx_t*,variable_declaration_t*);
  84 static variable_list_t *variable_list_add(parser_ctx_t*,variable_list_t*,variable_declaration_t*);
  85
  86 static void *new_statement(parser_ctx_t*,statement_type_t,size_t);
  87 static statement_t *new_block_statement(parser_ctx_t*,statement_list_t*);
  88 static statement_t *new_var_statement(parser_ctx_t*,variable_list_t*);
  89 static statement_t *new_expression_statement(parser_ctx_t*,expression_t*);
  90 static statement_t *new_if_statement(parser_ctx_t*,expression_t*,statement_t*,statement_t*);
  91 static statement_t *new_while_statement(parser_ctx_t*,BOOL,expression_t*,statement_t*);
  92 static statement_t *new_for_statement(parser_ctx_t*,variable_list_t*,expression_t*,expression_t*,
  93         expression_t*,statement_t*);
  94 static statement_t *new_forin_statement(parser_ctx_t*,variable_declaration_t*,expression_t*,expression_t*,statement_t*);
  95 static statement_t *new_continue_statement(parser_ctx_t*,const WCHAR*);
  96 static statement_t *new_break_statement(parser_ctx_t*,const WCHAR*);
  97 static statement_t *new_return_statement(parser_ctx_t*,expression_t*);
  98 static statement_t *new_with_statement(parser_ctx_t*,expression_t*,statement_t*);
  99 static statement_t *new_labelled_statement(parser_ctx_t*,const WCHAR*,statement_t*);
 100 static statement_t *new_switch_statement(parser_ctx_t*,expression_t*,case_clausule_t*);
 101 static statement_t *new_throw_statement(parser_ctx_t*,expression_t*);
 102 static statement_t *new_try_statement(parser_ctx_t*,statement_t*,catch_block_t*,statement_t*);
 103
 104 struct statement_list_t {
 105    statement_t *head;
 106    statement_t *tail;
 107 };
 108
 109 static statement_list_t *new_statement_list(parser_ctx_t*,statement_t*);
 110 static statement_list_t *statement_list_add(statement_list_t*,statement_t*);
 111
 112 typedef struct _parameter_list_t {
 113     parameter_t *head;
 114     parameter_t *tail;
 115 } parameter_list_t;
 116
 117 static parameter_list_t *new_parameter_list(parser_ctx_t*,const WCHAR*);
 118 static parameter_list_t *parameter_list_add(parser_ctx_t*,parameter_list_t*,const WCHAR*);
 119
 120 static void push_func(parser_ctx_t*);
 121 static inline void pop_func(parser_ctx_t *ctx)
 122 {
 123     ctx->func_stack = ctx->func_stack->next;
 124 }
 125
 126 static void *new_expression(parser_ctx_t *ctx,expression_type_t,size_t);
 127 static expression_t *new_function_expression(parser_ctx_t*,const WCHAR*,parameter_list_t*,
 128         source_elements_t*,const WCHAR*,DWORD);
 129 static expression_t *new_binary_expression(parser_ctx_t*,expression_type_t,expression_t*,expression_t*);
 130 static expression_t *new_unary_expression(parser_ctx_t*,expression_type_t,expression_t*);
 131 static expression_t *new_conditional_expression(parser_ctx_t*,expression_t*,expression_t*,expression_t*);
 132 static expression_t *new_member_expression(parser_ctx_t*,expression_t*,const WCHAR*);
 133 static expression_t *new_new_expression(parser_ctx_t*,expression_t*,argument_list_t*);
 134 static expression_t *new_call_expression(parser_ctx_t*,expression_t*,argument_list_t*);
 135 static expression_t *new_identifier_expression(parser_ctx_t*,const WCHAR*);
 136 static expression_t *new_literal_expression(parser_ctx_t*,literal_t*);
 137 static expression_t *new_array_literal_expression(parser_ctx_t*,element_list_t*,int);
 138 static expression_t *new_prop_and_value_expression(parser_ctx_t*,property_list_t*);
 139
 140 static source_elements_t *new_source_elements(parser_ctx_t*);
 141 static source_elements_t *source_elements_add_statement(source_elements_t*,statement_t*);
 142
 143 %}
 144
 145 %pure_parser
 146 %start Program
 147
 148 %union {
 149     int                     ival;
 150     const WCHAR             *srcptr;
 151     LPCWSTR                 wstr;
 152     literal_t               *literal;
 153     struct _argument_list_t *argument_list;
 154     case_clausule_t         *case_clausule;
 155     struct _case_list_t     *case_list;
 156     catch_block_t           *catch_block;
 157     struct _element_list_t  *element_list;
 158     expression_t            *expr;
 159     const WCHAR            *identifier;
 160     struct _parameter_list_t *parameter_list;
 161     struct _property_list_t *property_list;
 162     source_elements_t       *source_elements;
 163     statement_t             *statement;
 164     struct _statement_list_t *statement_list;
 165     struct _variable_list_t *variable_list;
 166     variable_declaration_t  *variable_declaration;
 167 }
 168
 169 /* keywords */
 170 %token kBREAK kCASE kCATCH kCONTINUE kDEFAULT kDELETE kDO kELSE kIF kFINALLY kFOR kIN
 171 %token kINSTANCEOF kNEW kNULL kRETURN kSWITCH kTHIS kTHROW kTRUE kFALSE kTRY kTYPEOF kVAR kVOID kWHILE kWITH
 172 %token tANDAND tOROR tINC tDEC tHTMLCOMMENT kDIVEQ
 173
 174 %token <srcptr> kFUNCTION '}'
 175
 176 /* tokens */
 177 %token <identifier> tIdentifier
 178 %token <ival> tAssignOper tEqOper tShiftOper tRelOper
 179 %token <literal> tNumericLiteral tBooleanLiteral
 180 %token <wstr> tStringLiteral
 181 %token tEOF
 182
 183 %type <source_elements> SourceElements
 184 %type <source_elements> FunctionBody
 185 %type <statement> Statement
 186 %type <statement> Block
 187 %type <statement> VariableStatement
 188 %type <statement> EmptyStatement
 189 %type <statement> ExpressionStatement
 190 %type <statement> IfStatement
 191 %type <statement> IterationStatement
 192 %type <statement> ContinueStatement
 193 %type <statement> BreakStatement
 194 %type <statement> ReturnStatement
 195 %type <statement> WithStatement
 196 %type <statement> LabelledStatement
 197 %type <statement> SwitchStatement
 198 %type <statement> ThrowStatement
 199 %type <statement> TryStatement
 200 %type <statement> Finally
 201 %type <statement_list> StatementList StatementList_opt
 202 %type <parameter_list> FormalParameterList FormalParameterList_opt
 203 %type <expr> Expression Expression_opt Expression_err
 204 %type <expr> ExpressionNoIn ExpressionNoIn_opt
 205 %type <expr> FunctionExpression
 206 %type <expr> AssignmentExpression AssignmentExpressionNoIn
 207 %type <expr> ConditionalExpression ConditionalExpressionNoIn
 208 %type <expr> LeftHandSideExpression
 209 %type <expr> LogicalORExpression LogicalORExpressionNoIn
 210 %type <expr> LogicalANDExpression LogicalANDExpressionNoIn
 211 %type <expr> BitwiseORExpression BitwiseORExpressionNoIn
 212 %type <expr> BitwiseXORExpression BitwiseXORExpressionNoIn
 213 %type <expr> BitwiseANDExpression BitwiseANDExpressionNoIn
 214 %type <expr> EqualityExpression EqualityExpressionNoIn
 215 %type <expr> RelationalExpression RelationalExpressionNoIn
 216 %type <expr> ShiftExpression
 217 %type <expr> AdditiveExpression
 218 %type <expr> MultiplicativeExpression
 219 %type <expr> Initialiser_opt Initialiser
 220 %type <expr> InitialiserNoIn_opt InitialiserNoIn
 221 %type <expr> UnaryExpression
 222 %type <expr> PostfixExpression
 223 %type <expr> NewExpression
 224 %type <expr> CallExpression
 225 %type <expr> MemberExpression
 226 %type <expr> PrimaryExpression
 227 %type <identifier> Identifier_opt
 228 %type <variable_list> VariableDeclarationList
 229 %type <variable_list> VariableDeclarationListNoIn
 230 %type <variable_declaration> VariableDeclaration
 231 %type <variable_declaration> VariableDeclarationNoIn
 232 %type <case_list> CaseClausules CaseClausules_opt
 233 %type <case_clausule> CaseClausule DefaultClausule CaseBlock
 234 %type <catch_block> Catch
 235 %type <argument_list> Arguments
 236 %type <argument_list> ArgumentList
 237 %type <literal> Literal
 238 %type <expr> ArrayLiteral
 239 %type <expr> ObjectLiteral
 240 %type <ival> Elision Elision_opt
 241 %type <element_list> ElementList
 242 %type <property_list> PropertyNameAndValueList
 243 %type <literal> PropertyName
 244 %type <literal> BooleanLiteral
 245 %type <srcptr> KFunction
 246 %type <ival> AssignOper
 247
 248 %nonassoc LOWER_THAN_ELSE
 249 %nonassoc kELSE
 250
 251 %%
 252
 253 /* ECMA-262 3rd Edition    14 */
 254 Program
 255        : SourceElements HtmlComment tEOF
 256                                 { program_parsed(ctx, $1); }
 257
 258 HtmlComment
 259         : tHTMLCOMMENT          {}
 260         | /* empty */           {}
 261
 262 /* ECMA-262 3rd Edition    14 */
 263 SourceElements
 264         : /* empty */           { $$ = new_source_elements(ctx); }
 265         | SourceElements Statement
 266                                 { $$ = source_elements_add_statement($1, $2); }
 267
 268 /* ECMA-262 3rd Edition    13 */
 269 FunctionExpression
 270         : KFunction Identifier_opt left_bracket FormalParameterList_opt right_bracket '{' FunctionBody '}'
 271                                 { $$ = new_function_expression(ctx, $2, $4, $7, $1, $8-$1+1); }
 272
 273 KFunction
 274         : kFUNCTION             { push_func(ctx); $$ = $1; }
 275
 276 /* ECMA-262 3rd Edition    13 */
 277 FunctionBody
 278         : SourceElements        { $$ = function_body_parsed(ctx, $1); }
 279
 280 /* ECMA-262 3rd Edition    13 */
 281 FormalParameterList
 282         : tIdentifier           { $$ = new_parameter_list(ctx, $1); }
 283         | FormalParameterList ',' tIdentifier
 284                                 { $$ = parameter_list_add(ctx, $1, $3); }
 285
 286 /* ECMA-262 3rd Edition    13 */
 287 FormalParameterList_opt
 288         : /* empty */           { $$ = NULL; }
 289         | FormalParameterList   { $$ = $1; }
 290
 291 /* ECMA-262 3rd Edition    12 */
 292 Statement
 293         : Block                 { $$ = $1; }
 294         | VariableStatement     { $$ = $1; }
 295         | EmptyStatement        { $$ = $1; }
 296         | FunctionExpression    { $$ = new_statement(ctx, STAT_EMPTY, 0); }
 297         | ExpressionStatement   { $$ = $1; }
 298         | IfStatement           { $$ = $1; }
 299         | IterationStatement    { $$ = $1; }
 300         | ContinueStatement     { $$ = $1; }
 301         | BreakStatement        { $$ = $1; }
 302         | ReturnStatement       { $$ = $1; }
 303         | WithStatement         { $$ = $1; }
 304         | LabelledStatement     { $$ = $1; }
 305         | SwitchStatement       { $$ = $1; }
 306         | ThrowStatement        { $$ = $1; }
 307         | TryStatement          { $$ = $1; }
 308
 309 /* ECMA-262 3rd Edition    12.2 */
 310 StatementList
 311         : Statement             { $$ = new_statement_list(ctx, $1); }
 312         | StatementList Statement
 313                                 { $$ = statement_list_add($1, $2); }
 314
 315 /* ECMA-262 3rd Edition    12.2 */
 316 StatementList_opt
 317         : /* empty */           { $$ = NULL; }
 318         | StatementList         { $$ = $1; }
 319
 320 /* ECMA-262 3rd Edition    12.1 */
 321 Block
 322         : '{' StatementList '}' { $$ = new_block_statement(ctx, $2); }
 323         | '{' '}'               { $$ = new_block_statement(ctx, NULL); }
 324
 325 /* ECMA-262 3rd Edition    12.2 */
 326 VariableStatement
 327         : kVAR VariableDeclarationList semicolon_opt
 328                                 { $$ = new_var_statement(ctx, $2); }
 329
 330 /* ECMA-262 3rd Edition    12.2 */
 331 VariableDeclarationList
 332         : VariableDeclaration   { $$ = new_variable_list(ctx, $1); }
 333         | VariableDeclarationList ',' VariableDeclaration
 334                                 { $$ = variable_list_add(ctx, $1, $3); }
 335
 336 /* ECMA-262 3rd Edition    12.2 */
 337 VariableDeclarationListNoIn
 338         : VariableDeclarationNoIn
 339                                 { $$ = new_variable_list(ctx, $1); }
 340         | VariableDeclarationListNoIn ',' VariableDeclarationNoIn
 341                                 { $$ = variable_list_add(ctx, $1, $3); }
 342
 343 /* ECMA-262 3rd Edition    12.2 */
 344 VariableDeclaration
 345         : tIdentifier Initialiser_opt
 346                                 { $$ = new_variable_declaration(ctx, $1, $2); }
 347
 348 /* ECMA-262 3rd Edition    12.2 */
 349 VariableDeclarationNoIn
 350         : tIdentifier InitialiserNoIn_opt
 351                                 { $$ = new_variable_declaration(ctx, $1, $2); }
 352
 353 /* ECMA-262 3rd Edition    12.2 */
 354 Initialiser_opt
 355         : /* empty */           { $$ = NULL; }
 356         | Initialiser           { $$ = $1; }
 357
 358 /* ECMA-262 3rd Edition    12.2 */
 359 Initialiser
 360         : '=' AssignmentExpression
 361                                 { $$ = $2; }
 362
 363 /* ECMA-262 3rd Edition    12.2 */
 364 InitialiserNoIn_opt
 365         : /* empty */           { $$ = NULL; }
 366         | InitialiserNoIn       { $$ = $1; }
 367
 368 /* ECMA-262 3rd Edition    12.2 */
 369 InitialiserNoIn
 370         : '=' AssignmentExpressionNoIn
 371                                 { $$ = $2; }
 372
 373 /* ECMA-262 3rd Edition    12.3 */
 374 EmptyStatement
 375         : ';'                   { $$ = new_statement(ctx, STAT_EMPTY, 0); }
 376
 377 /* ECMA-262 3rd Edition    12.4 */
 378 ExpressionStatement
 379         : Expression semicolon_opt
 380                                 { $$ = new_expression_statement(ctx, $1); }
 381
 382 /* ECMA-262 3rd Edition    12.5 */
 383 IfStatement
 384         : kIF left_bracket Expression_err right_bracket Statement kELSE Statement
 385                                 { $$ = new_if_statement(ctx, $3, $5, $7); }
 386         | kIF left_bracket Expression_err right_bracket Statement %prec LOWER_THAN_ELSE
 387                                 { $$ = new_if_statement(ctx, $3, $5, NULL); }
 388
 389 /* ECMA-262 3rd Edition    12.6 */
 390 IterationStatement
 391         : kDO Statement kWHILE left_bracket Expression_err right_bracket semicolon_opt
 392                                 { $$ = new_while_statement(ctx, TRUE, $5, $2); }
 393         | kWHILE left_bracket Expression_err right_bracket Statement
 394                                 { $$ = new_while_statement(ctx, FALSE, $3, $5); }
 395         | kFOR left_bracket ExpressionNoIn_opt
 396                                 { if(!explicit_error(ctx, $3, ';')) YYABORT; }
 397         semicolon  Expression_opt
 398                                 { if(!explicit_error(ctx, $6, ';')) YYABORT; }
 399         semicolon Expression_opt right_bracket Statement
 400                                 { $$ = new_for_statement(ctx, NULL, $3, $6, $9, $11); }
 401         | kFOR left_bracket kVAR VariableDeclarationListNoIn
 402                                 { if(!explicit_error(ctx, $4, ';')) YYABORT; }
 403         semicolon Expression_opt
 404                                 { if(!explicit_error(ctx, $7, ';')) YYABORT; }
 405         semicolon Expression_opt right_bracket Statement
 406                                 { $$ = new_for_statement(ctx, $4, NULL, $7, $10, $12); }
 407         | kFOR left_bracket LeftHandSideExpression kIN Expression_err right_bracket Statement
 408                                 { $$ = new_forin_statement(ctx, NULL, $3, $5, $7); }
 409         | kFOR left_bracket kVAR VariableDeclarationNoIn kIN Expression_err right_bracket Statement
 410                                 { $$ = new_forin_statement(ctx, $4, NULL, $6, $8); }
 411
 412 /* ECMA-262 3rd Edition    12.7 */
 413 ContinueStatement
 414         : kCONTINUE /* NONL */ Identifier_opt semicolon_opt
 415                                 { $$ = new_continue_statement(ctx, $2); }
 416
 417 /* ECMA-262 3rd Edition    12.8 */
 418 BreakStatement
 419         : kBREAK /* NONL */ Identifier_opt semicolon_opt
 420                                 { $$ = new_break_statement(ctx, $2); }
 421
 422 /* ECMA-262 3rd Edition    12.9 */
 423 ReturnStatement
 424         : kRETURN /* NONL */ Expression_opt semicolon_opt
 425                                 { $$ = new_return_statement(ctx, $2); }
 426
 427 /* ECMA-262 3rd Edition    12.10 */
 428 WithStatement
 429         : kWITH left_bracket Expression right_bracket Statement
 430                                 { $$ = new_with_statement(ctx, $3, $5); }
 431
 432 /* ECMA-262 3rd Edition    12.12 */
 433 LabelledStatement
 434         : tIdentifier ':' Statement
 435                                 { $$ = new_labelled_statement(ctx, $1, $3); }
 436
 437 /* ECMA-262 3rd Edition    12.11 */
 438 SwitchStatement
 439         : kSWITCH left_bracket Expression right_bracket CaseBlock
 440                                 { $$ = new_switch_statement(ctx, $3, $5); }
 441
 442 /* ECMA-262 3rd Edition    12.11 */
 443 CaseBlock
 444         : '{' CaseClausules_opt '}'
 445                                  { $$ = new_case_block(ctx, $2, NULL, NULL); }
 446         | '{' CaseClausules_opt DefaultClausule CaseClausules_opt '}'
 447                                  { $$ = new_case_block(ctx, $2, $3, $4); }
 448
 449 /* ECMA-262 3rd Edition    12.11 */
 450 CaseClausules_opt
 451         : /* empty */            { $$ = NULL; }
 452         | CaseClausules          { $$ = $1; }
 453
 454 /* ECMA-262 3rd Edition    12.11 */
 455 CaseClausules
 456         : CaseClausule           { $$ = new_case_list(ctx, $1); }
 457         | CaseClausules CaseClausule
 458                                  { $$ = case_list_add(ctx, $1, $2); }
 459
 460 /* ECMA-262 3rd Edition    12.11 */
 461 CaseClausule
 462         : kCASE Expression ':' StatementList_opt
 463                                  { $$ = new_case_clausule(ctx, $2, $4); }
 464
 465 /* ECMA-262 3rd Edition    12.11 */
 466 DefaultClausule
 467         : kDEFAULT ':' StatementList_opt
 468                                  { $$ = new_case_clausule(ctx, NULL, $3); }
 469
 470 /* ECMA-262 3rd Edition    12.13 */
 471 ThrowStatement
 472         : kTHROW /* NONL */ Expression semicolon_opt
 473                                 { $$ = new_throw_statement(ctx, $2); }
 474
 475 /* ECMA-262 3rd Edition    12.14 */
 476 TryStatement
 477         : kTRY Block Catch      { $$ = new_try_statement(ctx, $2, $3, NULL); }
 478         | kTRY Block Finally    { $$ = new_try_statement(ctx, $2, NULL, $3); }
 479         | kTRY Block Catch Finally
 480                                 { $$ = new_try_statement(ctx, $2, $3, $4); }
 481
 482 /* ECMA-262 3rd Edition    12.14 */
 483 Catch
 484         : kCATCH left_bracket tIdentifier right_bracket Block
 485                                 { $$ = new_catch_block(ctx, $3, $5); }
 486
 487 /* ECMA-262 3rd Edition    12.14 */
 488 Finally
 489         : kFINALLY Block        { $$ = $2; }
 490
 491 /* ECMA-262 3rd Edition    11.14 */
 492 Expression_opt
 493         : /* empty */           { $$ = NULL; }
 494         | Expression            { $$ = $1; }
 495
 496 Expression_err
 497         : Expression            { $$ = $1; }
 498         | error                 { set_error(ctx, JS_E_SYNTAX); YYABORT; }
 499
 500 /* ECMA-262 3rd Edition    11.14 */
 501 Expression
 502         : AssignmentExpression  { $$ = $1; }
 503         | Expression ',' AssignmentExpression
 504                                 { $$ = new_binary_expression(ctx, EXPR_COMMA, $1, $3); }
 505
 506 /* ECMA-262 3rd Edition    11.14 */
 507 ExpressionNoIn_opt
 508         : /* empty */           { $$ = NULL; }
 509         | ExpressionNoIn        { $$ = $1; }
 510
 511 /* ECMA-262 3rd Edition    11.14 */
 512 ExpressionNoIn
 513         : AssignmentExpressionNoIn
 514                                 { $$ = $1; }
 515         | ExpressionNoIn ',' AssignmentExpressionNoIn
 516                                 { $$ = new_binary_expression(ctx, EXPR_COMMA, $1, $3); }
 517
 518 AssignOper
 519         : tAssignOper           { $$ = $1; }
 520         | kDIVEQ                { $$ = EXPR_ASSIGNDIV; }
 521
 522 /* ECMA-262 3rd Edition    11.13 */
 523 AssignmentExpression
 524         : ConditionalExpression { $$ = $1; }
 525         | LeftHandSideExpression '=' AssignmentExpression
 526                                 { $$ = new_binary_expression(ctx, EXPR_ASSIGN, $1, $3); }
 527         | LeftHandSideExpression AssignOper AssignmentExpression
 528                                 { $$ = new_binary_expression(ctx, $2, $1, $3); }
 529
 530 /* ECMA-262 3rd Edition    11.13 */
 531 AssignmentExpressionNoIn
 532         : ConditionalExpressionNoIn
 533                                 { $$ = $1; }
 534         | LeftHandSideExpression '=' AssignmentExpressionNoIn
 535                                 { $$ = new_binary_expression(ctx, EXPR_ASSIGN, $1, $3); }
 536         | LeftHandSideExpression AssignOper AssignmentExpressionNoIn
 537                                 { $$ = new_binary_expression(ctx, $2, $1, $3); }
 538
 539 /* ECMA-262 3rd Edition    11.12 */
 540 ConditionalExpression
 541         : LogicalORExpression   { $$ = $1; }
 542         | LogicalORExpression '?' AssignmentExpression ':' AssignmentExpression
 543                                 { $$ = new_conditional_expression(ctx, $1, $3, $5); }
 544
 545 /* ECMA-262 3rd Edition    11.12 */
 546 ConditionalExpressionNoIn
 547         : LogicalORExpressionNoIn
 548                                 { $$ = $1; }
 549         | LogicalORExpressionNoIn '?' AssignmentExpressionNoIn ':' AssignmentExpressionNoIn
 550                                 { $$ = new_conditional_expression(ctx, $1, $3, $5); }
 551
 552 /* ECMA-262 3rd Edition    11.11 */
 553 LogicalORExpression
 554         : LogicalANDExpression  { $$ = $1; }
 555         | LogicalORExpression tOROR LogicalANDExpression
 556                                 { $$ = new_binary_expression(ctx, EXPR_OR, $1, $3); }
 557
 558 /* ECMA-262 3rd Edition    11.11 */
 559 LogicalORExpressionNoIn
 560         : LogicalANDExpressionNoIn
 561                                 { $$ = $1; }
 562         | LogicalORExpressionNoIn tOROR LogicalANDExpressionNoIn
 563                                 { $$ = new_binary_expression(ctx, EXPR_OR, $1, $3); }
 564
 565 /* ECMA-262 3rd Edition    11.11 */
 566 LogicalANDExpression
 567         : BitwiseORExpression   { $$ = $1; }
 568         | LogicalANDExpression tANDAND BitwiseORExpression
 569                                 { $$ = new_binary_expression(ctx, EXPR_AND, $1, $3); }
 570
 571 /* ECMA-262 3rd Edition    11.11 */
 572 LogicalANDExpressionNoIn
 573         : BitwiseORExpressionNoIn
 574                                 { $$ = $1; }
 575         | LogicalANDExpressionNoIn tANDAND BitwiseORExpressionNoIn
 576                                 { $$ = new_binary_expression(ctx, EXPR_AND, $1, $3); }
 577
 578 /* ECMA-262 3rd Edition    11.10 */
 579 BitwiseORExpression
 580         : BitwiseXORExpression   { $$ = $1; }
 581         | BitwiseORExpression '|' BitwiseXORExpression
 582                                 { $$ = new_binary_expression(ctx, EXPR_BOR, $1, $3); }
 583
 584 /* ECMA-262 3rd Edition    11.10 */
 585 BitwiseORExpressionNoIn
 586         : BitwiseXORExpressionNoIn
 587                                 { $$ = $1; }
 588         | BitwiseORExpressionNoIn '|' BitwiseXORExpressionNoIn
 589                                 { $$ = new_binary_expression(ctx, EXPR_BOR, $1, $3); }
 590
 591 /* ECMA-262 3rd Edition    11.10 */
 592 BitwiseXORExpression
 593         : BitwiseANDExpression  { $$ = $1; }
 594         | BitwiseXORExpression '^' BitwiseANDExpression
 595                                 { $$ = new_binary_expression(ctx, EXPR_BXOR, $1, $3); }
 596
 597 /* ECMA-262 3rd Edition    11.10 */
 598 BitwiseXORExpressionNoIn
 599         : BitwiseANDExpressionNoIn
 600                                 { $$ = $1; }
 601         | BitwiseXORExpressionNoIn '^' BitwiseANDExpressionNoIn
 602                                 { $$ = new_binary_expression(ctx, EXPR_BXOR, $1, $3); }
 603
 604 /* ECMA-262 3rd Edition    11.10 */
 605 BitwiseANDExpression
 606         : EqualityExpression    { $$ = $1; }
 607         | BitwiseANDExpression '&' EqualityExpression
 608                                 { $$ = new_binary_expression(ctx, EXPR_BAND, $1, $3); }
 609
 610 /* ECMA-262 3rd Edition    11.10 */
 611 BitwiseANDExpressionNoIn
 612         : EqualityExpressionNoIn
 613                                 { $$ = $1; }
 614         | BitwiseANDExpressionNoIn '&' EqualityExpressionNoIn
 615                                 { $$ = new_binary_expression(ctx, EXPR_BAND, $1, $3); }
 616
 617 /* ECMA-262 3rd Edition    11.9 */
 618 EqualityExpression
 619         : RelationalExpression  { $$ = $1; }
 620         | EqualityExpression tEqOper RelationalExpression
 621                                 { $$ = new_binary_expression(ctx, $2, $1, $3); }
 622
 623 /* ECMA-262 3rd Edition    11.9 */
 624 EqualityExpressionNoIn
 625         : RelationalExpressionNoIn  { $$ = $1; }
 626         | EqualityExpressionNoIn tEqOper RelationalExpressionNoIn
 627                                 { $$ = new_binary_expression(ctx, $2, $1, $3); }
 628
 629 /* ECMA-262 3rd Edition    11.8 */
 630 RelationalExpression
 631         : ShiftExpression       { $$ = $1; }
 632         | RelationalExpression tRelOper ShiftExpression
 633                                 { $$ = new_binary_expression(ctx, $2, $1, $3); }
 634         | RelationalExpression kINSTANCEOF ShiftExpression
 635                                 { $$ = new_binary_expression(ctx, EXPR_INSTANCEOF, $1, $3); }
 636         | RelationalExpression kIN ShiftExpression
 637                                 { $$ = new_binary_expression(ctx, EXPR_IN, $1, $3); }
 638
 639 /* ECMA-262 3rd Edition    11.8 */
 640 RelationalExpressionNoIn
 641         : ShiftExpression       { $$ = $1; }
 642         | RelationalExpressionNoIn tRelOper ShiftExpression
 643                                 { $$ = new_binary_expression(ctx, $2, $1, $3); }
 644         | RelationalExpressionNoIn kINSTANCEOF ShiftExpression
 645                                 { $$ = new_binary_expression(ctx, EXPR_INSTANCEOF, $1, $3); }
 646
 647 /* ECMA-262 3rd Edition    11.7 */
 648 ShiftExpression
 649         : AdditiveExpression    { $$ = $1; }
 650         | ShiftExpression tShiftOper AdditiveExpression
 651                                 { $$ = new_binary_expression(ctx, $2, $1, $3); }
 652
 653 /* ECMA-262 3rd Edition    11.6 */
 654 AdditiveExpression
 655         : MultiplicativeExpression
 656                                 { $$ = $1; }
 657         | AdditiveExpression '+' MultiplicativeExpression
 658                                 { $$ = new_binary_expression(ctx, EXPR_ADD, $1, $3); }
 659         | AdditiveExpression '-' MultiplicativeExpression
 660                                 { $$ = new_binary_expression(ctx, EXPR_SUB, $1, $3); }
 661
 662 /* ECMA-262 3rd Edition    11.5 */
 663 MultiplicativeExpression
 664         : UnaryExpression       { $$ = $1; }
 665         | MultiplicativeExpression '*' UnaryExpression
 666                                 { $$ = new_binary_expression(ctx, EXPR_MUL, $1, $3); }
 667         | MultiplicativeExpression '/' UnaryExpression
 668                                 { $$ = new_binary_expression(ctx, EXPR_DIV, $1, $3); }
 669         | MultiplicativeExpression '%' UnaryExpression
 670                                 { $$ = new_binary_expression(ctx, EXPR_MOD, $1, $3); }
 671
 672 /* ECMA-262 3rd Edition    11.4 */
 673 UnaryExpression
 674         : PostfixExpression     { $$ = $1; }
 675         | kDELETE UnaryExpression
 676                                 { $$ = new_unary_expression(ctx, EXPR_DELETE, $2); }
 677         | kVOID UnaryExpression { $$ = new_unary_expression(ctx, EXPR_VOID, $2); }
 678         | kTYPEOF UnaryExpression
 679                                 { $$ = new_unary_expression(ctx, EXPR_TYPEOF, $2); }
 680         | tINC UnaryExpression  { $$ = new_unary_expression(ctx, EXPR_PREINC, $2); }
 681         | tDEC UnaryExpression  { $$ = new_unary_expression(ctx, EXPR_PREDEC, $2); }
 682         | '+' UnaryExpression   { $$ = new_unary_expression(ctx, EXPR_PLUS, $2); }
 683         | '-' UnaryExpression   { $$ = new_unary_expression(ctx, EXPR_MINUS, $2); }
 684         | '~' UnaryExpression   { $$ = new_unary_expression(ctx, EXPR_BITNEG, $2); }
 685         | '!' UnaryExpression   { $$ = new_unary_expression(ctx, EXPR_LOGNEG, $2); }
 686
 687 /* ECMA-262 3rd Edition    11.2 */
 688 PostfixExpression
 689         : LeftHandSideExpression
 690                                 { $$ = $1; }
 691         | LeftHandSideExpression /* NONL */ tINC
 692                                 { $$ = new_unary_expression(ctx, EXPR_POSTINC, $1); }
 693         | LeftHandSideExpression /* NONL */ tDEC
 694                                 { $$ = new_unary_expression(ctx, EXPR_POSTDEC, $1); }
 695
 696
 697 /* ECMA-262 3rd Edition    11.2 */
 698 LeftHandSideExpression
 699         : NewExpression         { $$ = $1; }
 700         | CallExpression        { $$ = $1; }
 701
 702 /* ECMA-262 3rd Edition    11.2 */
 703 NewExpression
 704         : MemberExpression      { $$ = $1; }
 705         | kNEW NewExpression    { $$ = new_new_expression(ctx, $2, NULL); }
 706
 707 /* ECMA-262 3rd Edition    11.2 */
 708 MemberExpression
 709         : PrimaryExpression     { $$ = $1; }
 710         | FunctionExpression    { $$ = $1; }
 711         | MemberExpression '[' Expression ']'
 712                                 { $$ = new_binary_expression(ctx, EXPR_ARRAY, $1, $3); }
 713         | MemberExpression '.' tIdentifier
 714                                 { $$ = new_member_expression(ctx, $1, $3); }
 715         | kNEW MemberExpression Arguments
 716                                 { $$ = new_new_expression(ctx, $2, $3); }
 717
 718 /* ECMA-262 3rd Edition    11.2 */
 719 CallExpression
 720         : MemberExpression Arguments
 721                                 { $$ = new_call_expression(ctx, $1, $2); }
 722         | CallExpression Arguments
 723                                 { $$ = new_call_expression(ctx, $1, $2); }
 724         | CallExpression '[' Expression ']'
 725                                 { $$ = new_binary_expression(ctx, EXPR_ARRAY, $1, $3); }
 726         | CallExpression '.' tIdentifier
 727                                 { $$ = new_member_expression(ctx, $1, $3); }
 728
 729 /* ECMA-262 3rd Edition    11.2 */
 730 Arguments
 731         : '(' ')'               { $$ = NULL; }
 732         | '(' ArgumentList ')'  { $$ = $2; }
 733
 734 /* ECMA-262 3rd Edition    11.2 */
 735 ArgumentList
 736         : AssignmentExpression  { $$ = new_argument_list(ctx, $1); }
 737         | ArgumentList ',' AssignmentExpression
 738                                 { $$ = argument_list_add(ctx, $1, $3); }
 739
 740 /* ECMA-262 3rd Edition    11.1 */
 741 PrimaryExpression
 742         : kTHIS                 { $$ = new_expression(ctx, EXPR_THIS, 0); }
 743         | tIdentifier           { $$ = new_identifier_expression(ctx, $1); }
 744         | Literal               { $$ = new_literal_expression(ctx, $1); }
 745         | ArrayLiteral          { $$ = $1; }
 746         | ObjectLiteral         { $$ = $1; }
 747         | '(' Expression ')'    { $$ = $2; }
 748
 749 /* ECMA-262 3rd Edition    11.1.4 */
 750 ArrayLiteral
 751         : '[' ']'               { $$ = new_array_literal_expression(ctx, NULL, 0); }
 752         | '[' Elision ']'       { $$ = new_array_literal_expression(ctx, NULL, $2+1); }
 753         | '[' ElementList ']'   { $$ = new_array_literal_expression(ctx, $2, 0); }
 754         | '[' ElementList ',' Elision_opt ']'
 755                                 { $$ = new_array_literal_expression(ctx, $2, $4+1); }
 756
 757 /* ECMA-262 3rd Edition    11.1.4 */
 758 ElementList
 759         : Elision_opt AssignmentExpression
 760                                 { $$ = new_element_list(ctx, $1, $2); }
 761         | ElementList ',' Elision_opt AssignmentExpression
 762                                 { $$ = element_list_add(ctx, $1, $3, $4); }
 763
 764 /* ECMA-262 3rd Edition    11.1.4 */
 765 Elision
 766         : ','                   { $$ = 1; }
 767         | Elision ','           { $$ = $1 + 1; }
 768
 769 /* ECMA-262 3rd Edition    11.1.4 */
 770 Elision_opt
 771         : /* empty */           { $$ = 0; }
 772         | Elision               { $$ = $1; }
 773
 774 /* ECMA-262 3rd Edition    11.1.5 */
 775 ObjectLiteral
 776         : '{' '}'               { $$ = new_prop_and_value_expression(ctx, NULL); }
 777         | '{' PropertyNameAndValueList '}'
 778                                 { $$ = new_prop_and_value_expression(ctx, $2); }
 779
 780 /* ECMA-262 3rd Edition    11.1.5 */
 781 PropertyNameAndValueList
 782         : PropertyName ':' AssignmentExpression
 783                                 { $$ = new_property_list(ctx, $1, $3); }
 784         | PropertyNameAndValueList ',' PropertyName ':' AssignmentExpression
 785                                 { $$ = property_list_add(ctx, $1, $3, $5); }
 786
 787 /* ECMA-262 3rd Edition    11.1.5 */
 788 PropertyName
 789         : tIdentifier           { $$ = new_string_literal(ctx, $1); }
 790         | tStringLiteral        { $$ = new_string_literal(ctx, $1); }
 791         | tNumericLiteral       { $$ = $1; }
 792
 793 /* ECMA-262 3rd Edition    7.6 */
 794 Identifier_opt
 795         : /* empty*/            { $$ = NULL; }
 796         | tIdentifier           { $$ = $1; }
 797
 798 /* ECMA-262 3rd Edition    7.8 */
 799 Literal
 800         : kNULL                 { $$ = new_null_literal(ctx); }
 801         | BooleanLiteral        { $$ = $1; }
 802         | tNumericLiteral       { $$ = $1; }
 803         | tStringLiteral        { $$ = new_string_literal(ctx, $1); }
 804         | '/'                   { $$ = parse_regexp(ctx);
 805                                   if(!$$) YYABORT; }
 806         | kDIVEQ                { $$ = parse_regexp(ctx);
 807                                   if(!$$) YYABORT; }
 808
 809 /* ECMA-262 3rd Edition    7.8.2 */
 810 BooleanLiteral
 811         : kTRUE                 { $$ = new_boolean_literal(ctx, VARIANT_TRUE); }
 812         | kFALSE                { $$ = new_boolean_literal(ctx, VARIANT_FALSE); }
 813         | tBooleanLiteral       { $$ = $1; }
 814
 815 semicolon_opt
 816         : ';'
 817         | error                 { if(!allow_auto_semicolon(ctx)) {YYABORT;} }
 818
 819 left_bracket
 820         : '('
 821         | error                 { set_error(ctx, JS_E_MISSING_LBRACKET); YYABORT; }
 822
 823 right_bracket
 824         : ')'
 825         | error                 { set_error(ctx, JS_E_MISSING_RBRACKET); YYABORT; }
 826
 827 semicolon
 828         : ';'
 829         | error                 { set_error(ctx, JS_E_MISSING_SEMICOLON); YYABORT; }
 830
 831 %%
 832
 833 static BOOL allow_auto_semicolon(parser_ctx_t *ctx)
 834 {
 835     return ctx->nl || ctx->ptr == ctx->end || *(ctx->ptr-1) == '}';
 836 }
 837
 838 static void *new_statement(parser_ctx_t *ctx, statement_type_t type, size_t size)
 839 {
 840     statement_t *stat;
 841
 842     stat = parser_alloc(ctx, size ? size : sizeof(*stat));
 843     if(!stat)
 844         return NULL;
 845
 846     stat->type = type;
 847     stat->next = NULL;
 848
 849     return stat;
 850 }
 851
 852 static literal_t *new_string_literal(parser_ctx_t *ctx, const WCHAR *str)
 853 {
 854     literal_t *ret = parser_alloc(ctx, sizeof(literal_t));
 855
 856     ret->type = LT_STRING;
 857     ret->u.wstr = str;
 858
 859     return ret;
 860 }
 861
 862 static literal_t *new_null_literal(parser_ctx_t *ctx)
 863 {
 864     literal_t *ret = parser_alloc(ctx, sizeof(literal_t));
 865
 866     ret->type = LT_NULL;
 867
 868     return ret;
 869 }
 870
 871 static prop_val_t *new_prop_val(parser_ctx_t *ctx, literal_t *name, expression_t *value)
 872 {
 873     prop_val_t *ret = parser_alloc(ctx, sizeof(prop_val_t));
 874
 875     ret->name = name;
 876     ret->value = value;
 877     ret->next = NULL;
 878
 879     return ret;
 880 }
 881
 882 static property_list_t *new_property_list(parser_ctx_t *ctx, literal_t *name, expression_t *value)
 883 {
 884     property_list_t *ret = parser_alloc_tmp(ctx, sizeof(property_list_t));
 885
 886     ret->head = ret->tail = new_prop_val(ctx, name, value);
 887
 888     return ret;
 889 }
 890
 891 static property_list_t *property_list_add(parser_ctx_t *ctx, property_list_t *list, literal_t *name, expression_t *value)
 892 {
 893     list->tail = list->tail->next = new_prop_val(ctx, name, value);
 894
 895     return list;
 896 }
 897
 898 static array_element_t *new_array_element(parser_ctx_t *ctx, int elision, expression_t *expr)
 899 {
 900     array_element_t *ret = parser_alloc(ctx, sizeof(array_element_t));
 901
 902     ret->elision = elision;
 903     ret->expr = expr;
 904     ret->next = NULL;
 905
 906     return ret;
 907 }
 908
 909 static element_list_t *new_element_list(parser_ctx_t *ctx, int elision, expression_t *expr)
 910 {
 911     element_list_t *ret = parser_alloc_tmp(ctx, sizeof(element_list_t));
 912
 913     ret->head = ret->tail = new_array_element(ctx, elision, expr);
 914
 915     return ret;
 916 }
 917
 918 static element_list_t *element_list_add(parser_ctx_t *ctx, element_list_t *list, int elision, expression_t *expr)
 919 {
 920     list->tail = list->tail->next = new_array_element(ctx, elision, expr);
 921
 922     return list;
 923 }
 924
 925 static argument_t *new_argument(parser_ctx_t *ctx, expression_t *expr)
 926 {
 927     argument_t *ret = parser_alloc(ctx, sizeof(argument_t));
 928
 929     ret->expr = expr;
 930     ret->next = NULL;
 931
 932     return ret;
 933 }
 934
 935 static argument_list_t *new_argument_list(parser_ctx_t *ctx, expression_t *expr)
 936 {
 937     argument_list_t *ret = parser_alloc_tmp(ctx, sizeof(argument_list_t));
 938
 939     ret->head = ret->tail = new_argument(ctx, expr);
 940
 941     return ret;
 942 }
 943
 944 static argument_list_t *argument_list_add(parser_ctx_t *ctx, argument_list_t *list, expression_t *expr)
 945 {
 946     list->tail = list->tail->next = new_argument(ctx, expr);
 947
 948     return list;
 949 }
 950
 951 static catch_block_t *new_catch_block(parser_ctx_t *ctx, const WCHAR *identifier, statement_t *statement)
 952 {
 953     catch_block_t *ret = parser_alloc(ctx, sizeof(catch_block_t));
 954
 955     ret->identifier = identifier;
 956     ret->statement = statement;
 957
 958     return ret;
 959 }
 960
 961 static case_clausule_t *new_case_clausule(parser_ctx_t *ctx, expression_t *expr, statement_list_t *stat_list)
 962 {
 963     case_clausule_t *ret = parser_alloc(ctx, sizeof(case_clausule_t));
 964
 965     ret->expr = expr;
 966     ret->stat = stat_list ? stat_list->head : NULL;
 967     ret->next = NULL;
 968
 969     return ret;
 970 }
 971
 972 static case_list_t *new_case_list(parser_ctx_t *ctx, case_clausule_t *case_clausule)
 973 {
 974     case_list_t *ret = parser_alloc_tmp(ctx, sizeof(case_list_t));
 975
 976     ret->head = ret->tail = case_clausule;
 977
 978     return ret;
 979 }
 980
 981 static case_list_t *case_list_add(parser_ctx_t *ctx, case_list_t *list, case_clausule_t *case_clausule)
 982 {
 983     list->tail = list->tail->next = case_clausule;
 984
 985     return list;
 986 }
 987
 988 static case_clausule_t *new_case_block(parser_ctx_t *ctx, case_list_t *case_list1,
 989         case_clausule_t *default_clausule, case_list_t *case_list2)
 990 {
 991     case_clausule_t *ret = NULL, *iter = NULL, *iter2;
 992     statement_t *stat = NULL;
 993
 994     if(case_list1) {
 995         ret = case_list1->head;
 996         iter = case_list1->tail;
 997     }
 998
 999     if(default_clausule) {
1000         if(ret)
1001             iter = iter->next = default_clausule;
1002         else
1003             ret = iter = default_clausule;
1004     }
1005
1006     if(case_list2) {
1007         if(ret)
1008             iter->next = case_list2->head;
1009         else
1010             ret = case_list2->head;
1011     }
1012
1013     if(!ret)
1014         return NULL;
1015
1016     for(iter = ret; iter; iter = iter->next) {
1017         for(iter2 = iter; iter2 && !iter2->stat; iter2 = iter2->next);
1018         if(!iter2)
1019             break;
1020
1021         while(iter != iter2) {
1022             iter->stat = iter2->stat;
1023             iter = iter->next;
1024         }
1025
1026         if(stat) {
1027             while(stat->next)
1028                 stat = stat->next;
1029             stat->next = iter->stat;
1030         }else {
1031             stat = iter->stat;
1032         }
1033     }
1034
1035     return ret;
1036 }
1037
1038 static statement_t *new_block_statement(parser_ctx_t *ctx, statement_list_t *list)
1039 {
1040     block_statement_t *ret;
1041
1042     ret = new_statement(ctx, STAT_BLOCK, sizeof(*ret));
1043     if(!ret)
1044         return NULL;
1045
1046     ret->stat_list = list ? list->head : NULL;
1047
1048     return &ret->stat;
1049 }
1050
1051 static variable_declaration_t *new_variable_declaration(parser_ctx_t *ctx, const WCHAR *identifier, expression_t *expr)
1052 {
1053     variable_declaration_t *ret = parser_alloc(ctx, sizeof(variable_declaration_t));
1054     var_list_t *var_list = parser_alloc(ctx, sizeof(var_list_t));
1055
1056     ret->identifier = identifier;
1057     ret->expr = expr;
1058     ret->next = NULL;
1059
1060     var_list->identifier = identifier;
1061     var_list->next = NULL;
1062
1063     if(ctx->func_stack->var_tail)
1064         ctx->func_stack->var_tail = ctx->func_stack->var_tail->next = var_list;
1065     else
1066         ctx->func_stack->var_head = ctx->func_stack->var_tail = var_list;
1067
1068     return ret;
1069 }
1070
1071 static variable_list_t *new_variable_list(parser_ctx_t *ctx, variable_declaration_t *decl)
1072 {
1073     variable_list_t *ret = parser_alloc_tmp(ctx, sizeof(variable_list_t));
1074
1075     ret->head = ret->tail = decl;
1076
1077     return ret;
1078 }
1079
1080 static variable_list_t *variable_list_add(parser_ctx_t *ctx, variable_list_t *list, variable_declaration_t *decl)
1081 {
1082     list->tail = list->tail->next = decl;
1083
1084     return list;
1085 }
1086
1087 static statement_t *new_var_statement(parser_ctx_t *ctx, variable_list_t *variable_list)
1088 {
1089     var_statement_t *ret;
1090
1091     ret = new_statement(ctx, STAT_VAR, sizeof(*ret));
1092     if(!ret)
1093         return NULL;
1094
1095     ret->variable_list = variable_list->head;
1096
1097     return &ret->stat;
1098 }
1099
1100 static statement_t *new_expression_statement(parser_ctx_t *ctx, expression_t *expr)
1101 {
1102     expression_statement_t *ret;
1103
1104     ret = new_statement(ctx, STAT_EXPR, sizeof(*ret));
1105     if(!ret)
1106         return NULL;
1107
1108     ret->expr = expr;
1109
1110     return &ret->stat;
1111 }
1112
1113 static statement_t *new_if_statement(parser_ctx_t *ctx, expression_t *expr, statement_t *if_stat, statement_t *else_stat)
1114 {
1115     if_statement_t *ret;
1116
1117     ret = new_statement(ctx, STAT_IF, sizeof(*ret));
1118     if(!ret)
1119         return NULL;
1120
1121     ret->expr = expr;
1122     ret->if_stat = if_stat;
1123     ret->else_stat = else_stat;
1124
1125     return &ret->stat;
1126 }
1127
1128 static statement_t *new_while_statement(parser_ctx_t *ctx, BOOL dowhile, expression_t *expr, statement_t *stat)
1129 {
1130     while_statement_t *ret;
1131
1132     ret = new_statement(ctx, STAT_WHILE, sizeof(*ret));
1133     if(!ret)
1134         return NULL;
1135
1136     ret->do_while = dowhile;
1137     ret->expr = expr;
1138     ret->statement = stat;
1139
1140     return &ret->stat;
1141 }
1142
1143 static statement_t *new_for_statement(parser_ctx_t *ctx, variable_list_t *variable_list, expression_t *begin_expr,
1144         expression_t *expr, expression_t *end_expr, statement_t *statement)
1145 {
1146     for_statement_t *ret;
1147
1148     ret = new_statement(ctx, STAT_FOR, sizeof(*ret));
1149     if(!ret)
1150         return NULL;
1151
1152     ret->variable_list = variable_list ? variable_list->head : NULL;
1153     ret->begin_expr = begin_expr;
1154     ret->expr = expr;
1155     ret->end_expr = end_expr;
1156     ret->statement = statement;
1157
1158     return &ret->stat;
1159 }
1160
1161 static statement_t *new_forin_statement(parser_ctx_t *ctx, variable_declaration_t *variable, expression_t *expr,
1162         expression_t *in_expr, statement_t *statement)
1163 {
1164     forin_statement_t *ret;
1165
1166     ret = new_statement(ctx, STAT_FORIN, sizeof(*ret));
1167     if(!ret)
1168         return NULL;
1169
1170     ret->variable = variable;
1171     ret->expr = expr;
1172     ret->in_expr = in_expr;
1173     ret->statement = statement;
1174
1175     return &ret->stat;
1176 }
1177
1178 static statement_t *new_continue_statement(parser_ctx_t *ctx, const WCHAR *identifier)
1179 {
1180     branch_statement_t *ret;
1181
1182     ret = new_statement(ctx, STAT_CONTINUE, sizeof(*ret));
1183     if(!ret)
1184         return NULL;
1185
1186     ret->identifier = identifier;
1187
1188     return &ret->stat;
1189 }
1190
1191 static statement_t *new_break_statement(parser_ctx_t *ctx, const WCHAR *identifier)
1192 {
1193     branch_statement_t *ret;
1194
1195     ret = new_statement(ctx, STAT_BREAK, sizeof(*ret));
1196     if(!ret)
1197         return NULL;
1198
1199     ret->identifier = identifier;
1200
1201     return &ret->stat;
1202 }
1203
1204 static statement_t *new_return_statement(parser_ctx_t *ctx, expression_t *expr)
1205 {
1206     expression_statement_t *ret;
1207
1208     ret = new_statement(ctx, STAT_RETURN, sizeof(*ret));
1209     if(!ret)
1210         return NULL;
1211
1212     ret->expr = expr;
1213
1214     return &ret->stat;
1215 }
1216
1217 static statement_t *new_with_statement(parser_ctx_t *ctx, expression_t *expr, statement_t *statement)
1218 {
1219     with_statement_t *ret;
1220
1221     ret = new_statement(ctx, STAT_WITH, sizeof(*ret));
1222     if(!ret)
1223         return NULL;
1224
1225     ret->expr = expr;
1226     ret->statement = statement;
1227
1228     return &ret->stat;
1229 }
1230
1231 static statement_t *new_labelled_statement(parser_ctx_t *ctx, const WCHAR *identifier, statement_t *statement)
1232 {
1233     labelled_statement_t *ret;
1234
1235     ret = new_statement(ctx, STAT_LABEL, sizeof(*ret));
1236     if(!ret)
1237         return NULL;
1238
1239     ret->identifier = identifier;
1240     ret->statement = statement;
1241
1242     return &ret->stat;
1243 }
1244
1245 static statement_t *new_switch_statement(parser_ctx_t *ctx, expression_t *expr, case_clausule_t *case_list)
1246 {
1247     switch_statement_t *ret;
1248
1249     ret = new_statement(ctx, STAT_SWITCH, sizeof(*ret));
1250     if(!ret)
1251         return NULL;
1252
1253     ret->expr = expr;
1254     ret->case_list = case_list;
1255
1256     return &ret->stat;
1257 }
1258
1259 static statement_t *new_throw_statement(parser_ctx_t *ctx, expression_t *expr)
1260 {
1261     expression_statement_t *ret;
1262
1263     ret = new_statement(ctx, STAT_THROW, sizeof(*ret));
1264     if(!ret)
1265         return NULL;
1266
1267     ret->expr = expr;
1268
1269     return &ret->stat;
1270 }
1271
1272 static statement_t *new_try_statement(parser_ctx_t *ctx, statement_t *try_statement,
1273        catch_block_t *catch_block, statement_t *finally_statement)
1274 {
1275     try_statement_t *ret;
1276
1277     ret = new_statement(ctx, STAT_TRY, sizeof(*ret));
1278     if(!ret)
1279         return NULL;
1280
1281     ret->try_statement = try_statement;
1282     ret->catch_block = catch_block;
1283     ret->finally_statement = finally_statement;
1284
1285     return &ret->stat;
1286 }
1287
1288 static parameter_t *new_parameter(parser_ctx_t *ctx, const WCHAR *identifier)
1289 {
1290     parameter_t *ret = parser_alloc(ctx, sizeof(parameter_t));
1291
1292     ret->identifier = identifier;
1293     ret->next = NULL;
1294
1295     return ret;
1296 }
1297
1298 static parameter_list_t *new_parameter_list(parser_ctx_t *ctx, const WCHAR *identifier)
1299 {
1300     parameter_list_t *ret = parser_alloc_tmp(ctx, sizeof(parameter_list_t));
1301
1302     ret->head = ret->tail = new_parameter(ctx, identifier);
1303
1304     return ret;
1305 }
1306
1307 static parameter_list_t *parameter_list_add(parser_ctx_t *ctx, parameter_list_t *list, const WCHAR *identifier)
1308 {
1309     list->tail = list->tail->next = new_parameter(ctx, identifier);
1310
1311     return list;
1312 }
1313
1314 static expression_t *new_function_expression(parser_ctx_t *ctx, const WCHAR *identifier,
1315        parameter_list_t *parameter_list, source_elements_t *source_elements, const WCHAR *src_str, DWORD src_len)
1316 {
1317     function_expression_t *ret = new_expression(ctx, EXPR_FUNC, sizeof(*ret));
1318
1319     ret->identifier = identifier;
1320     ret->parameter_list = parameter_list ? parameter_list->head : NULL;
1321     ret->source_elements = source_elements;
1322     ret->src_str = src_str;
1323     ret->src_len = src_len;
1324
1325     if(ret->identifier) {
1326         function_declaration_t *decl = parser_alloc(ctx, sizeof(function_declaration_t));
1327
1328         decl->expr = ret;
1329         decl->next = NULL;
1330
1331         if(ctx->func_stack->func_tail)
1332             ctx->func_stack->func_tail = ctx->func_stack->func_tail->next = decl;
1333         else
1334             ctx->func_stack->func_head = ctx->func_stack->func_tail = decl;
1335     }
1336
1337     return &ret->expr;
1338 }
1339
1340 static void *new_expression(parser_ctx_t *ctx, expression_type_t type, size_t size)
1341 {
1342     expression_t *ret = parser_alloc(ctx, size ? size : sizeof(*ret));
1343
1344     ret->type = type;
1345
1346     return ret;
1347 }
1348
1349 static expression_t *new_binary_expression(parser_ctx_t *ctx, expression_type_t type,
1350        expression_t *expression1, expression_t *expression2)
1351 {
1352     binary_expression_t *ret = new_expression(ctx, type, sizeof(*ret));
1353
1354     ret->expression1 = expression1;
1355     ret->expression2 = expression2;
1356
1357     return &ret->expr;
1358 }
1359
1360 static expression_t *new_unary_expression(parser_ctx_t *ctx, expression_type_t type, expression_t *expression)
1361 {
1362     unary_expression_t *ret = new_expression(ctx, type, sizeof(*ret));
1363
1364     ret->expression = expression;
1365
1366     return &ret->expr;
1367 }
1368
1369 static expression_t *new_conditional_expression(parser_ctx_t *ctx, expression_t *expression,
1370        expression_t *true_expression, expression_t *false_expression)
1371 {
1372     conditional_expression_t *ret = new_expression(ctx, EXPR_COND, sizeof(*ret));
1373
1374     ret->expression = expression;
1375     ret->true_expression = true_expression;
1376     ret->false_expression = false_expression;
1377
1378     return &ret->expr;
1379 }
1380
1381 static expression_t *new_member_expression(parser_ctx_t *ctx, expression_t *expression, const WCHAR *identifier)
1382 {
1383     member_expression_t *ret = new_expression(ctx, EXPR_MEMBER, sizeof(*ret));
1384
1385     ret->expression = expression;
1386     ret->identifier = identifier;
1387
1388     return &ret->expr;
1389 }
1390
1391 static expression_t *new_new_expression(parser_ctx_t *ctx, expression_t *expression, argument_list_t *argument_list)
1392 {
1393     call_expression_t *ret = new_expression(ctx, EXPR_NEW, sizeof(*ret));
1394
1395     ret->expression = expression;
1396     ret->argument_list = argument_list ? argument_list->head : NULL;
1397
1398     return &ret->expr;
1399 }
1400
1401 static expression_t *new_call_expression(parser_ctx_t *ctx, expression_t *expression, argument_list_t *argument_list)
1402 {
1403     call_expression_t *ret = new_expression(ctx, EXPR_CALL, sizeof(*ret));
1404
1405     ret->expression = expression;
1406     ret->argument_list = argument_list ? argument_list->head : NULL;
1407
1408     return &ret->expr;
1409 }
1410
1411 static int parser_error(const char *str)
1412 {
1413     return 0;
1414 }
1415
1416 static void set_error(parser_ctx_t *ctx, UINT error)
1417 {
1418     ctx->hres = error;
1419 }
1420
1421 static BOOL explicit_error(parser_ctx_t *ctx, void *obj, WCHAR next)
1422 {
1423     if(obj || *(ctx->ptr-1)==next) return TRUE;
1424
1425     set_error(ctx, JS_E_SYNTAX);
1426     return FALSE;
1427 }
1428
1429
1430 static expression_t *new_identifier_expression(parser_ctx_t *ctx, const WCHAR *identifier)
1431 {
1432     identifier_expression_t *ret = new_expression(ctx, EXPR_IDENT, sizeof(*ret));
1433
1434     ret->identifier = identifier;
1435
1436     return &ret->expr;
1437 }
1438
1439 static expression_t *new_array_literal_expression(parser_ctx_t *ctx, element_list_t *element_list, int length)
1440 {
1441     array_literal_expression_t *ret = new_expression(ctx, EXPR_ARRAYLIT, sizeof(*ret));
1442
1443     ret->element_list = element_list ? element_list->head : NULL;
1444     ret->length = length;
1445
1446     return &ret->expr;
1447 }
1448
1449 static expression_t *new_prop_and_value_expression(parser_ctx_t *ctx, property_list_t *property_list)
1450 {
1451     property_value_expression_t *ret = new_expression(ctx, EXPR_PROPVAL, sizeof(*ret));
1452
1453     ret->property_list = property_list ? property_list->head : NULL;
1454
1455     return &ret->expr;
1456 }
1457
1458 static expression_t *new_literal_expression(parser_ctx_t *ctx, literal_t *literal)
1459 {
1460     literal_expression_t *ret = new_expression(ctx, EXPR_LITERAL, sizeof(*ret));
1461
1462     ret->literal = literal;
1463
1464     return &ret->expr;
1465 }
1466
1467 static source_elements_t *new_source_elements(parser_ctx_t *ctx)
1468 {
1469     source_elements_t *ret = parser_alloc(ctx, sizeof(source_elements_t));
1470
1471     memset(ret, 0, sizeof(*ret));
1472     ret->instr_off = 0;
1473
1474     return ret;
1475 }
1476
1477 static source_elements_t *source_elements_add_statement(source_elements_t *source_elements, statement_t *statement)
1478 {
1479     if(source_elements->statement_tail)
1480         source_elements->statement_tail = source_elements->statement_tail->next = statement;
1481     else
1482         source_elements->statement = source_elements->statement_tail = statement;
1483
1484     return source_elements;
1485 }
1486
1487 static statement_list_t *new_statement_list(parser_ctx_t *ctx, statement_t *statement)
1488 {
1489     statement_list_t *ret =  parser_alloc_tmp(ctx, sizeof(statement_list_t));
1490
1491     ret->head = ret->tail = statement;
1492
1493     return ret;
1494 }
1495
1496 static statement_list_t *statement_list_add(statement_list_t *list, statement_t *statement)
1497 {
1498     list->tail = list->tail->next = statement;
1499
1500     return list;
1501 }
1502
1503 static void push_func(parser_ctx_t *ctx)
1504 {
1505     func_stack_t *new_func = parser_alloc_tmp(ctx, sizeof(func_stack_t));
1506
1507     new_func->func_head = new_func->func_tail = NULL;
1508     new_func->var_head = new_func->var_tail = NULL;
1509
1510     new_func->next = ctx->func_stack;
1511     ctx->func_stack = new_func;
1512 }
1513
1514 static source_elements_t *function_body_parsed(parser_ctx_t *ctx, source_elements_t *source)
1515 {
1516     source->functions = ctx->func_stack->func_head;
1517     source->variables = ctx->func_stack->var_head;
1518     pop_func(ctx);
1519
1520     return source;
1521 }
1522
1523 static void program_parsed(parser_ctx_t *ctx, source_elements_t *source)
1524 {
1525     source->functions = ctx->func_stack->func_head;
1526     source->variables = ctx->func_stack->var_head;
1527     pop_func(ctx);
1528
1529     ctx->source = source;
1530     if(!ctx->lexer_error)
1531         ctx->hres = S_OK;
1532 }
1533
1534 void parser_release(parser_ctx_t *ctx)
1535 {
1536     if(--ctx->ref)
1537         return;
1538
1539     if(ctx->code)
1540         release_bytecode(ctx->code);
1541     if(ctx->compiler)
1542         release_compiler(ctx->compiler);
1543     script_release(ctx->script);
1544     heap_free(ctx->begin);
1545     jsheap_free(&ctx->heap);
1546     heap_free(ctx);
1547 }
1548
1549 HRESULT script_parse(script_ctx_t *ctx, const WCHAR *code, const WCHAR *delimiter,
1550         parser_ctx_t **ret)
1551 {
1552     parser_ctx_t *parser_ctx;
1553     jsheap_t *mark;
1554     HRESULT hres;
1555
1556     const WCHAR html_tagW[] = {'<','/','s','c','r','i','p','t','>',0};
1557
1558     parser_ctx = heap_alloc_zero(sizeof(parser_ctx_t));
1559     if(!parser_ctx)
1560         return E_OUTOFMEMORY;
1561
1562     parser_ctx->ref = 1;
1563     parser_ctx->hres = JS_E_SYNTAX;
1564     parser_ctx->is_html = delimiter && !strcmpiW(delimiter, html_tagW);
1565
1566     parser_ctx->begin = heap_strdupW(code);
1567     if(!parser_ctx->begin) {
1568         heap_free(parser_ctx);
1569         return E_OUTOFMEMORY;
1570     }
1571
1572     parser_ctx->ptr = parser_ctx->begin;
1573     parser_ctx->end = parser_ctx->begin + strlenW(parser_ctx->begin);
1574
1575     script_addref(ctx);
1576     parser_ctx->script = ctx;
1577
1578     mark = jsheap_mark(&ctx->tmp_heap);
1579     jsheap_init(&parser_ctx->heap);
1580
1581     push_func(parser_ctx);
1582
1583     parser_parse(parser_ctx);
1584     jsheap_clear(mark);
1585     if(FAILED(parser_ctx->hres)) {
1586         hres = parser_ctx->hres;
1587         parser_release(parser_ctx);
1588         return hres;
1589     }
1590
1591     *ret = parser_ctx;
1592     return S_OK;
1593 }