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 static literal_t *new_undefined_literal(parser_ctx_t*);
  42 static literal_t *new_boolean_literal(parser_ctx_t*,VARIANT_BOOL);
  43
  44 typedef struct _property_list_t {
  45     prop_val_t *head;
  46     prop_val_t *tail;
  47 } property_list_t;
  48
  49 static property_list_t *new_property_list(parser_ctx_t*,literal_t*,expression_t*);
  50 static property_list_t *property_list_add(parser_ctx_t*,property_list_t*,literal_t*,expression_t*);
  51
  52 typedef struct _element_list_t {
  53     array_element_t *head;
  54     array_element_t *tail;
  55 } element_list_t;
  56
  57 static element_list_t *new_element_list(parser_ctx_t*,int,expression_t*);
  58 static element_list_t *element_list_add(parser_ctx_t*,element_list_t*,int,expression_t*);
  59
  60 typedef struct _argument_list_t {
  61     argument_t *head;
  62     argument_t *tail;
  63 } argument_list_t;
  64
  65 static argument_list_t *new_argument_list(parser_ctx_t*,expression_t*);
  66 static argument_list_t *argument_list_add(parser_ctx_t*,argument_list_t*,expression_t*);
  67
  68 typedef struct _case_list_t {
  69     case_clausule_t *head;
  70     case_clausule_t *tail;
  71 } case_list_t;
  72
  73 static catch_block_t *new_catch_block(parser_ctx_t*,const WCHAR*,statement_t*);
  74 static case_clausule_t *new_case_clausule(parser_ctx_t*,expression_t*,statement_list_t*);
  75 static case_list_t *new_case_list(parser_ctx_t*,case_clausule_t*);
  76 static case_list_t *case_list_add(parser_ctx_t*,case_list_t*,case_clausule_t*);
  77 static case_clausule_t *new_case_block(parser_ctx_t*,case_list_t*,case_clausule_t*,case_list_t*);
  78
  79 typedef struct _variable_list_t {
  80     variable_declaration_t *head;
  81     variable_declaration_t *tail;
  82 } variable_list_t;
  83
  84 static variable_declaration_t *new_variable_declaration(parser_ctx_t*,const WCHAR*,expression_t*);
  85 static variable_list_t *new_variable_list(parser_ctx_t*,variable_declaration_t*);
  86 static variable_list_t *variable_list_add(parser_ctx_t*,variable_list_t*,variable_declaration_t*);
  87
  88 static statement_t *new_block_statement(parser_ctx_t*,statement_list_t*);
  89 static statement_t *new_var_statement(parser_ctx_t*,variable_list_t*);
  90 static statement_t *new_empty_statement(parser_ctx_t*);
  91 static statement_t *new_expression_statement(parser_ctx_t*,expression_t*);
  92 static statement_t *new_if_statement(parser_ctx_t*,expression_t*,statement_t*,statement_t*);
  93 static statement_t *new_while_statement(parser_ctx_t*,BOOL,expression_t*,statement_t*);
  94 static statement_t *new_for_statement(parser_ctx_t*,variable_list_t*,expression_t*,expression_t*,
  95         expression_t*,statement_t*);
  96 static statement_t *new_forin_statement(parser_ctx_t*,variable_declaration_t*,expression_t*,expression_t*,statement_t*);
  97 static statement_t *new_continue_statement(parser_ctx_t*,const WCHAR*);
  98 static statement_t *new_break_statement(parser_ctx_t*,const WCHAR*);
  99 static statement_t *new_return_statement(parser_ctx_t*,expression_t*);
 100 static statement_t *new_with_statement(parser_ctx_t*,expression_t*,statement_t*);
 101 static statement_t *new_labelled_statement(parser_ctx_t*,const WCHAR*,statement_t*);
 102 static statement_t *new_switch_statement(parser_ctx_t*,expression_t*,case_clausule_t*);
 103 static statement_t *new_throw_statement(parser_ctx_t*,expression_t*);
 104 static statement_t *new_try_statement(parser_ctx_t*,statement_t*,catch_block_t*,statement_t*);
 105
 106 struct statement_list_t {
 107    statement_t *head;
 108    statement_t *tail;
 109 };
 110
 111 static statement_list_t *new_statement_list(parser_ctx_t*,statement_t*);
 112 static statement_list_t *statement_list_add(statement_list_t*,statement_t*);
 113
 114 typedef struct _parameter_list_t {
 115     parameter_t *head;
 116     parameter_t *tail;
 117 } parameter_list_t;
 118
 119 static parameter_list_t *new_parameter_list(parser_ctx_t*,const WCHAR*);
 120 static parameter_list_t *parameter_list_add(parser_ctx_t*,parameter_list_t*,const WCHAR*);
 121
 122 static void push_func(parser_ctx_t*);
 123 static inline void pop_func(parser_ctx_t *ctx)
 124 {
 125     ctx->func_stack = ctx->func_stack->next;
 126 }
 127
 128 static expression_t *new_function_expression(parser_ctx_t*,const WCHAR*,parameter_list_t*,
 129         source_elements_t*,const WCHAR*,DWORD);
 130 static expression_t *new_binary_expression(parser_ctx_t*,expression_type_t,expression_t*,expression_t*);
 131 static expression_t *new_unary_expression(parser_ctx_t*,expression_type_t,expression_t*);
 132 static expression_t *new_conditional_expression(parser_ctx_t*,expression_t*,expression_t*,expression_t*);
 133 static expression_t *new_array_expression(parser_ctx_t*,expression_t*,expression_t*);
 134 static expression_t *new_member_expression(parser_ctx_t*,expression_t*,const WCHAR*);
 135 static expression_t *new_new_expression(parser_ctx_t*,expression_t*,argument_list_t*);
 136 static expression_t *new_call_expression(parser_ctx_t*,expression_t*,argument_list_t*);
 137 static expression_t *new_this_expression(parser_ctx_t*);
 138 static expression_t *new_identifier_expression(parser_ctx_t*,const WCHAR*);
 139 static expression_t *new_literal_expression(parser_ctx_t*,literal_t*);
 140 static expression_t *new_array_literal_expression(parser_ctx_t*,element_list_t*,int);
 141 static expression_t *new_prop_and_value_expression(parser_ctx_t*,property_list_t*);
 142
 143 static source_elements_t *new_source_elements(parser_ctx_t*);
 144 static source_elements_t *source_elements_add_statement(source_elements_t*,statement_t*);
 145
 146 %}
 147
 148 %pure_parser
 149 %start Program
 150
 151 %union {
 152     int                     ival;
 153     const WCHAR             *srcptr;
 154     LPCWSTR                 wstr;
 155     literal_t               *literal;
 156     struct _argument_list_t *argument_list;
 157     case_clausule_t         *case_clausule;
 158     struct _case_list_t     *case_list;
 159     catch_block_t           *catch_block;
 160     struct _element_list_t  *element_list;
 161     expression_t            *expr;
 162     const WCHAR            *identifier;
 163     struct _parameter_list_t *parameter_list;
 164     struct _property_list_t *property_list;
 165     source_elements_t       *source_elements;
 166     statement_t             *statement;
 167     struct _statement_list_t *statement_list;
 168     struct _variable_list_t *variable_list;
 169     variable_declaration_t  *variable_declaration;
 170 }
 171
 172 /* keywords */
 173 %token kBREAK kCASE kCATCH kCONTINUE kDEFAULT kDELETE kDO kELSE kIF kFINALLY kFOR kIN
 174 %token kINSTANCEOF kNEW kNULL kUNDEFINED kRETURN kSWITCH kTHIS kTHROW kTRUE kFALSE kTRY kTYPEOF kVAR kVOID kWHILE kWITH
 175 %token tANDAND tOROR tINC tDEC tHTMLCOMMENT kDIVEQ
 176
 177 %token <srcptr> kFUNCTION '}'
 178
 179 /* tokens */
 180 %token <identifier> tIdentifier
 181 %token <ival> tAssignOper tEqOper tShiftOper tRelOper
 182 %token <literal> tNumericLiteral
 183 %token <wstr> tStringLiteral
 184
 185 %type <source_elements> SourceElements
 186 %type <source_elements> FunctionBody
 187 %type <statement> Statement
 188 %type <statement> Block
 189 %type <statement> VariableStatement
 190 %type <statement> EmptyStatement
 191 %type <statement> ExpressionStatement
 192 %type <statement> IfStatement
 193 %type <statement> IterationStatement
 194 %type <statement> ContinueStatement
 195 %type <statement> BreakStatement
 196 %type <statement> ReturnStatement
 197 %type <statement> WithStatement
 198 %type <statement> LabelledStatement
 199 %type <statement> SwitchStatement
 200 %type <statement> ThrowStatement
 201 %type <statement> TryStatement
 202 %type <statement> Finally
 203 %type <statement_list> StatementList StatementList_opt
 204 %type <parameter_list> FormalParameterList FormalParameterList_opt
 205 %type <expr> Expression Expression_opt Expression_err
 206 %type <expr> ExpressionNoIn ExpressionNoIn_opt
 207 %type <expr> FunctionExpression
 208 %type <expr> AssignmentExpression AssignmentExpressionNoIn
 209 %type <expr> ConditionalExpression ConditionalExpressionNoIn
 210 %type <expr> LeftHandSideExpression
 211 %type <expr> LogicalORExpression LogicalORExpressionNoIn
 212 %type <expr> LogicalANDExpression LogicalANDExpressionNoIn
 213 %type <expr> BitwiseORExpression BitwiseORExpressionNoIn
 214 %type <expr> BitwiseXORExpression BitwiseXORExpressionNoIn
 215 %type <expr> BitwiseANDExpression BitwiseANDExpressionNoIn
 216 %type <expr> EqualityExpression EqualityExpressionNoIn
 217 %type <expr> RelationalExpression RelationalExpressionNoIn
 218 %type <expr> ShiftExpression
 219 %type <expr> AdditiveExpression
 220 %type <expr> MultiplicativeExpression
 221 %type <expr> Initialiser_opt Initialiser
 222 %type <expr> InitialiserNoIn_opt InitialiserNoIn
 223 %type <expr> UnaryExpression
 224 %type <expr> PostfixExpression
 225 %type <expr> NewExpression
 226 %type <expr> CallExpression
 227 %type <expr> MemberExpression
 228 %type <expr> PrimaryExpression
 229 %type <identifier> Identifier_opt
 230 %type <variable_list> VariableDeclarationList
 231 %type <variable_list> VariableDeclarationListNoIn
 232 %type <variable_declaration> VariableDeclaration
 233 %type <variable_declaration> VariableDeclarationNoIn
 234 %type <case_list> CaseClausules CaseClausules_opt
 235 %type <case_clausule> CaseClausule DefaultClausule CaseBlock
 236 %type <catch_block> Catch
 237 %type <argument_list> Arguments
 238 %type <argument_list> ArgumentList
 239 %type <literal> Literal
 240 %type <expr> ArrayLiteral
 241 %type <expr> ObjectLiteral
 242 %type <ival> Elision Elision_opt
 243 %type <element_list> ElementList
 244 %type <property_list> PropertyNameAndValueList
 245 %type <literal> PropertyName
 246 %type <literal> BooleanLiteral
 247 %type <srcptr> KFunction
 248 %type <ival> AssignOper
 249
 250 %nonassoc LOWER_THAN_ELSE
 251 %nonassoc kELSE
 252
 253 %%
 254
 255 /* ECMA-262 3rd Edition    14 */
 256 Program
 257        : SourceElements HtmlComment
 258                                 { program_parsed(ctx, $1); }
 259
 260 HtmlComment
 261         : tHTMLCOMMENT          {}
 262         | /* empty */           {}
 263
 264 /* ECMA-262 3rd Edition    14 */
 265 SourceElements
 266         : /* empty */           { $$ = new_source_elements(ctx); }
 267         | SourceElements Statement
 268                                 { $$ = source_elements_add_statement($1, $2); }
 269
 270 /* ECMA-262 3rd Edition    13 */
 271 FunctionExpression
 272         : KFunction Identifier_opt left_bracket FormalParameterList_opt right_bracket '{' FunctionBody '}'
 273                                 { $$ = new_function_expression(ctx, $2, $4, $7, $1, $8-$1+1); }
 274
 275 KFunction
 276         : kFUNCTION             { push_func(ctx); $$ = $1; }
 277
 278 /* ECMA-262 3rd Edition    13 */
 279 FunctionBody
 280         : SourceElements        { $$ = function_body_parsed(ctx, $1); }
 281
 282 /* ECMA-262 3rd Edition    13 */
 283 FormalParameterList
 284         : tIdentifier           { $$ = new_parameter_list(ctx, $1); }
 285         | FormalParameterList ',' tIdentifier
 286                                 { $$ = parameter_list_add(ctx, $1, $3); }
 287
 288 /* ECMA-262 3rd Edition    13 */
 289 FormalParameterList_opt
 290         : /* empty */           { $$ = NULL; }
 291         | FormalParameterList   { $$ = $1; }
 292
 293 /* ECMA-262 3rd Edition    12 */
 294 Statement
 295         : Block                 { $$ = $1; }
 296         | VariableStatement     { $$ = $1; }
 297         | EmptyStatement        { $$ = $1; }
 298         | FunctionExpression    { $$ = new_empty_statement(ctx); } /* FIXME: return NULL */
 299         | ExpressionStatement   { $$ = $1; }
 300         | IfStatement           { $$ = $1; }
 301         | IterationStatement    { $$ = $1; }
 302         | ContinueStatement     { $$ = $1; }
 303         | BreakStatement        { $$ = $1; }
 304         | ReturnStatement       { $$ = $1; }
 305         | WithStatement         { $$ = $1; }
 306         | LabelledStatement     { $$ = $1; }
 307         | SwitchStatement       { $$ = $1; }
 308         | ThrowStatement        { $$ = $1; }
 309         | TryStatement          { $$ = $1; }
 310
 311 /* ECMA-262 3rd Edition    12.2 */
 312 StatementList
 313         : Statement             { $$ = new_statement_list(ctx, $1); }
 314         | StatementList Statement
 315                                 { $$ = statement_list_add($1, $2); }
 316
 317 /* ECMA-262 3rd Edition    12.2 */
 318 StatementList_opt
 319         : /* empty */           { $$ = NULL; }
 320         | StatementList         { $$ = $1; }
 321
 322 /* ECMA-262 3rd Edition    12.1 */
 323 Block
 324         : '{' StatementList '}' { $$ = new_block_statement(ctx, $2); }
 325         | '{' '}'               { $$ = new_block_statement(ctx, NULL); }
 326
 327 /* ECMA-262 3rd Edition    12.2 */
 328 VariableStatement
 329         : kVAR VariableDeclarationList semicolon_opt
 330                                 { $$ = new_var_statement(ctx, $2); }
 331
 332 /* ECMA-262 3rd Edition    12.2 */
 333 VariableDeclarationList
 334         : VariableDeclaration   { $$ = new_variable_list(ctx, $1); }
 335         | VariableDeclarationList ',' VariableDeclaration
 336                                 { $$ = variable_list_add(ctx, $1, $3); }
 337
 338 /* ECMA-262 3rd Edition    12.2 */
 339 VariableDeclarationListNoIn
 340         : VariableDeclarationNoIn
 341                                 { $$ = new_variable_list(ctx, $1); }
 342         | VariableDeclarationListNoIn ',' VariableDeclarationNoIn
 343                                 { $$ = variable_list_add(ctx, $1, $3); }
 344
 345 /* ECMA-262 3rd Edition    12.2 */
 346 VariableDeclaration
 347         : tIdentifier Initialiser_opt
 348                                 { $$ = new_variable_declaration(ctx, $1, $2); }
 349
 350 /* ECMA-262 3rd Edition    12.2 */
 351 VariableDeclarationNoIn
 352         : tIdentifier InitialiserNoIn_opt
 353                                 { $$ = new_variable_declaration(ctx, $1, $2); }
 354
 355 /* ECMA-262 3rd Edition    12.2 */
 356 Initialiser_opt
 357         : /* empty */           { $$ = NULL; }
 358         | Initialiser           { $$ = $1; }
 359
 360 /* ECMA-262 3rd Edition    12.2 */
 361 Initialiser
 362         : '=' AssignmentExpression
 363                                 { $$ = $2; }
 364
 365 /* ECMA-262 3rd Edition    12.2 */
 366 InitialiserNoIn_opt
 367         : /* empty */           { $$ = NULL; }
 368         | InitialiserNoIn       { $$ = $1; }
 369
 370 /* ECMA-262 3rd Edition    12.2 */
 371 InitialiserNoIn
 372         : '=' AssignmentExpressionNoIn
 373                                 { $$ = $2; }
 374
 375 /* ECMA-262 3rd Edition    12.3 */
 376 EmptyStatement
 377         : ';'                   { $$ = new_empty_statement(ctx); }
 378
 379 /* ECMA-262 3rd Edition    12.4 */
 380 ExpressionStatement
 381         : Expression semicolon_opt
 382                                 { $$ = new_expression_statement(ctx, $1); }
 383
 384 /* ECMA-262 3rd Edition    12.5 */
 385 IfStatement
 386         : kIF left_bracket Expression_err right_bracket Statement kELSE Statement
 387                                 { $$ = new_if_statement(ctx, $3, $5, $7); }
 388         | kIF left_bracket Expression_err right_bracket Statement %prec LOWER_THAN_ELSE
 389                                 { $$ = new_if_statement(ctx, $3, $5, NULL); }
 390
 391 /* ECMA-262 3rd Edition    12.6 */
 392 IterationStatement
 393         : kDO Statement kWHILE left_bracket Expression_err right_bracket semicolon_opt
 394                                 { $$ = new_while_statement(ctx, TRUE, $5, $2); }
 395         | kWHILE left_bracket Expression_err right_bracket Statement
 396                                 { $$ = new_while_statement(ctx, FALSE, $3, $5); }
 397         | kFOR left_bracket ExpressionNoIn_opt
 398                                 { if(!explicit_error(ctx, $3, ';')) YYABORT; }
 399         semicolon  Expression_opt
 400                                 { if(!explicit_error(ctx, $6, ';')) YYABORT; }
 401         semicolon Expression_opt right_bracket Statement
 402                                 { $$ = new_for_statement(ctx, NULL, $3, $6, $9, $11); }
 403         | kFOR left_bracket kVAR VariableDeclarationListNoIn
 404                                 { if(!explicit_error(ctx, $4, ';')) YYABORT; }
 405         semicolon Expression_opt
 406                                 { if(!explicit_error(ctx, $7, ';')) YYABORT; }
 407         semicolon Expression_opt right_bracket Statement
 408                                 { $$ = new_for_statement(ctx, $4, NULL, $7, $10, $12); }
 409         | kFOR left_bracket LeftHandSideExpression kIN Expression_err right_bracket Statement
 410                                 { $$ = new_forin_statement(ctx, NULL, $3, $5, $7); }
 411         | kFOR left_bracket kVAR VariableDeclarationNoIn kIN Expression_err right_bracket Statement
 412                                 { $$ = new_forin_statement(ctx, $4, NULL, $6, $8); }
 413
 414 /* ECMA-262 3rd Edition    12.7 */
 415 ContinueStatement
 416         : kCONTINUE /* NONL */ Identifier_opt semicolon_opt
 417                                 { $$ = new_continue_statement(ctx, $2); }
 418
 419 /* ECMA-262 3rd Edition    12.8 */
 420 BreakStatement
 421         : kBREAK /* NONL */ Identifier_opt semicolon_opt
 422                                 { $$ = new_break_statement(ctx, $2); }
 423
 424 /* ECMA-262 3rd Edition    12.9 */
 425 ReturnStatement
 426         : kRETURN /* NONL */ Expression_opt semicolon_opt
 427                                 { $$ = new_return_statement(ctx, $2); }
 428
 429 /* ECMA-262 3rd Edition    12.10 */
 430 WithStatement
 431         : kWITH left_bracket Expression right_bracket Statement
 432                                 { $$ = new_with_statement(ctx, $3, $5); }
 433
 434 /* ECMA-262 3rd Edition    12.12 */
 435 LabelledStatement
 436         : tIdentifier ':' Statement
 437                                 { $$ = new_labelled_statement(ctx, $1, $3); }
 438
 439 /* ECMA-262 3rd Edition    12.11 */
 440 SwitchStatement
 441         : kSWITCH left_bracket Expression right_bracket CaseBlock
 442                                 { $$ = new_switch_statement(ctx, $3, $5); }
 443
 444 /* ECMA-262 3rd Edition    12.11 */
 445 CaseBlock
 446         : '{' CaseClausules_opt '}'
 447                                  { $$ = new_case_block(ctx, $2, NULL, NULL); }
 448         | '{' CaseClausules_opt DefaultClausule CaseClausules_opt '}'
 449                                  { $$ = new_case_block(ctx, $2, $3, $4); }
 450
 451 /* ECMA-262 3rd Edition    12.11 */
 452 CaseClausules_opt
 453         : /* empty */            { $$ = NULL; }
 454         | CaseClausules          { $$ = $1; }
 455
 456 /* ECMA-262 3rd Edition    12.11 */
 457 CaseClausules
 458         : CaseClausule           { $$ = new_case_list(ctx, $1); }
 459         | CaseClausules CaseClausule
 460                                  { $$ = case_list_add(ctx, $1, $2); }
 461
 462 /* ECMA-262 3rd Edition    12.11 */
 463 CaseClausule
 464         : kCASE Expression ':' StatementList_opt
 465                                  { $$ = new_case_clausule(ctx, $2, $4); }
 466
 467 /* ECMA-262 3rd Edition    12.11 */
 468 DefaultClausule
 469         : kDEFAULT ':' StatementList_opt
 470                                  { $$ = new_case_clausule(ctx, NULL, $3); }
 471
 472 /* ECMA-262 3rd Edition    12.13 */
 473 ThrowStatement
 474         : kTHROW /* NONL */ Expression semicolon_opt
 475                                 { $$ = new_throw_statement(ctx, $2); }
 476
 477 /* ECMA-262 3rd Edition    12.14 */
 478 TryStatement
 479         : kTRY Block Catch      { $$ = new_try_statement(ctx, $2, $3, NULL); }
 480         | kTRY Block Finally    { $$ = new_try_statement(ctx, $2, NULL, $3); }
 481         | kTRY Block Catch Finally
 482                                 { $$ = new_try_statement(ctx, $2, $3, $4); }
 483
 484 /* ECMA-262 3rd Edition    12.14 */
 485 Catch
 486         : kCATCH left_bracket tIdentifier right_bracket Block
 487                                 { $$ = new_catch_block(ctx, $3, $5); }
 488
 489 /* ECMA-262 3rd Edition    12.14 */
 490 Finally
 491         : kFINALLY Block        { $$ = $2; }
 492
 493 /* ECMA-262 3rd Edition    11.14 */
 494 Expression_opt
 495         : /* empty */           { $$ = NULL; }
 496         | Expression            { $$ = $1; }
 497
 498 Expression_err
 499         : Expression            { $$ = $1; }
 500         | error                 { set_error(ctx, IDS_SYNTAX_ERROR); YYABORT; }
 501
 502 /* ECMA-262 3rd Edition    11.14 */
 503 Expression
 504         : AssignmentExpression  { $$ = $1; }
 505         | Expression ',' AssignmentExpression
 506                                 { $$ = new_binary_expression(ctx, EXPR_COMMA, $1, $3); }
 507
 508 /* ECMA-262 3rd Edition    11.14 */
 509 ExpressionNoIn_opt
 510         : /* empty */           { $$ = NULL; }
 511         | ExpressionNoIn        { $$ = $1; }
 512
 513 /* ECMA-262 3rd Edition    11.14 */
 514 ExpressionNoIn
 515         : AssignmentExpressionNoIn
 516                                 { $$ = $1; }
 517         | ExpressionNoIn ',' AssignmentExpressionNoIn
 518                                 { $$ = new_binary_expression(ctx, EXPR_COMMA, $1, $3); }
 519
 520 AssignOper
 521         : tAssignOper           { $$ = $1; }
 522         | kDIVEQ                { $$ = EXPR_ASSIGNDIV; }
 523
 524 /* ECMA-262 3rd Edition    11.13 */
 525 AssignmentExpression
 526         : ConditionalExpression { $$ = $1; }
 527         | LeftHandSideExpression '=' AssignmentExpression
 528                                 { $$ = new_binary_expression(ctx, EXPR_ASSIGN, $1, $3); }
 529         | LeftHandSideExpression AssignOper AssignmentExpression
 530                                 { $$ = new_binary_expression(ctx, $2, $1, $3); }
 531
 532 /* ECMA-262 3rd Edition    11.13 */
 533 AssignmentExpressionNoIn
 534         : ConditionalExpressionNoIn
 535                                 { $$ = $1; }
 536         | LeftHandSideExpression '=' AssignmentExpressionNoIn
 537                                 { $$ = new_binary_expression(ctx, EXPR_ASSIGN, $1, $3); }
 538         | LeftHandSideExpression AssignOper AssignmentExpressionNoIn
 539                                 { $$ = new_binary_expression(ctx, $2, $1, $3); }
 540
 541 /* ECMA-262 3rd Edition    11.12 */
 542 ConditionalExpression
 543         : LogicalORExpression   { $$ = $1; }
 544         | LogicalORExpression '?' AssignmentExpression ':' AssignmentExpression
 545                                 { $$ = new_conditional_expression(ctx, $1, $3, $5); }
 546
 547 /* ECMA-262 3rd Edition    11.12 */
 548 ConditionalExpressionNoIn
 549         : LogicalORExpressionNoIn
 550                                 { $$ = $1; }
 551         | LogicalORExpressionNoIn '?' AssignmentExpressionNoIn ':' AssignmentExpressionNoIn
 552                                 { $$ = new_conditional_expression(ctx, $1, $3, $5); }
 553
 554 /* ECMA-262 3rd Edition    11.11 */
 555 LogicalORExpression
 556         : LogicalANDExpression  { $$ = $1; }
 557         | LogicalORExpression tOROR LogicalANDExpression
 558                                 { $$ = new_binary_expression(ctx, EXPR_OR, $1, $3); }
 559
 560 /* ECMA-262 3rd Edition    11.11 */
 561 LogicalORExpressionNoIn
 562         : LogicalANDExpressionNoIn
 563                                 { $$ = $1; }
 564         | LogicalORExpressionNoIn tOROR LogicalANDExpressionNoIn
 565                                 { $$ = new_binary_expression(ctx, EXPR_OR, $1, $3); }
 566
 567 /* ECMA-262 3rd Edition    11.11 */
 568 LogicalANDExpression
 569         : BitwiseORExpression   { $$ = $1; }
 570         | LogicalANDExpression tANDAND BitwiseORExpression
 571                                 { $$ = new_binary_expression(ctx, EXPR_AND, $1, $3); }
 572
 573 /* ECMA-262 3rd Edition    11.11 */
 574 LogicalANDExpressionNoIn
 575         : BitwiseORExpressionNoIn
 576                                 { $$ = $1; }
 577         | LogicalANDExpressionNoIn tANDAND BitwiseORExpressionNoIn
 578                                 { $$ = new_binary_expression(ctx, EXPR_AND, $1, $3); }
 579
 580 /* ECMA-262 3rd Edition    11.10 */
 581 BitwiseORExpression
 582         : BitwiseXORExpression   { $$ = $1; }
 583         | BitwiseORExpression '|' BitwiseXORExpression
 584                                 { $$ = new_binary_expression(ctx, EXPR_BOR, $1, $3); }
 585
 586 /* ECMA-262 3rd Edition    11.10 */
 587 BitwiseORExpressionNoIn
 588         : BitwiseXORExpressionNoIn
 589                                 { $$ = $1; }
 590         | BitwiseORExpressionNoIn '|' BitwiseXORExpressionNoIn
 591                                 { $$ = new_binary_expression(ctx, EXPR_BOR, $1, $3); }
 592
 593 /* ECMA-262 3rd Edition    11.10 */
 594 BitwiseXORExpression
 595         : BitwiseANDExpression  { $$ = $1; }
 596         | BitwiseXORExpression '^' BitwiseANDExpression
 597                                 { $$ = new_binary_expression(ctx, EXPR_BXOR, $1, $3); }
 598
 599 /* ECMA-262 3rd Edition    11.10 */
 600 BitwiseXORExpressionNoIn
 601         : BitwiseANDExpressionNoIn
 602                                 { $$ = $1; }
 603         | BitwiseXORExpressionNoIn '^' BitwiseANDExpressionNoIn
 604                                 { $$ = new_binary_expression(ctx, EXPR_BXOR, $1, $3); }
 605
 606 /* ECMA-262 3rd Edition    11.10 */
 607 BitwiseANDExpression
 608         : EqualityExpression    { $$ = $1; }
 609         | BitwiseANDExpression '&' EqualityExpression
 610                                 { $$ = new_binary_expression(ctx, EXPR_BAND, $1, $3); }
 611
 612 /* ECMA-262 3rd Edition    11.10 */
 613 BitwiseANDExpressionNoIn
 614         : EqualityExpressionNoIn
 615                                 { $$ = $1; }
 616         | BitwiseANDExpressionNoIn '&' EqualityExpressionNoIn
 617                                 { $$ = new_binary_expression(ctx, EXPR_BAND, $1, $3); }
 618
 619 /* ECMA-262 3rd Edition    11.9 */
 620 EqualityExpression
 621         : RelationalExpression  { $$ = $1; }
 622         | EqualityExpression tEqOper RelationalExpression
 623                                 { $$ = new_binary_expression(ctx, $2, $1, $3); }
 624
 625 /* ECMA-262 3rd Edition    11.9 */
 626 EqualityExpressionNoIn
 627         : RelationalExpressionNoIn  { $$ = $1; }
 628         | EqualityExpressionNoIn tEqOper RelationalExpressionNoIn
 629                                 { $$ = new_binary_expression(ctx, $2, $1, $3); }
 630
 631 /* ECMA-262 3rd Edition    11.8 */
 632 RelationalExpression
 633         : ShiftExpression       { $$ = $1; }
 634         | RelationalExpression tRelOper ShiftExpression
 635                                 { $$ = new_binary_expression(ctx, $2, $1, $3); }
 636         | RelationalExpression kINSTANCEOF ShiftExpression
 637                                 { $$ = new_binary_expression(ctx, EXPR_INSTANCEOF, $1, $3); }
 638         | RelationalExpression kIN ShiftExpression
 639                                 { $$ = new_binary_expression(ctx, EXPR_IN, $1, $3); }
 640
 641 /* ECMA-262 3rd Edition    11.8 */
 642 RelationalExpressionNoIn
 643         : ShiftExpression       { $$ = $1; }
 644         | RelationalExpressionNoIn tRelOper ShiftExpression
 645                                 { $$ = new_binary_expression(ctx, $2, $1, $3); }
 646         | RelationalExpressionNoIn kINSTANCEOF ShiftExpression
 647                                 { $$ = new_binary_expression(ctx, EXPR_INSTANCEOF, $1, $3); }
 648
 649 /* ECMA-262 3rd Edition    11.7 */
 650 ShiftExpression
 651         : AdditiveExpression    { $$ = $1; }
 652         | ShiftExpression tShiftOper AdditiveExpression
 653                                 { $$ = new_binary_expression(ctx, $2, $1, $3); }
 654
 655 /* ECMA-262 3rd Edition    11.6 */
 656 AdditiveExpression
 657         : MultiplicativeExpression
 658                                 { $$ = $1; }
 659         | AdditiveExpression '+' MultiplicativeExpression
 660                                 { $$ = new_binary_expression(ctx, EXPR_ADD, $1, $3); }
 661         | AdditiveExpression '-' MultiplicativeExpression
 662                                 { $$ = new_binary_expression(ctx, EXPR_SUB, $1, $3); }
 663
 664 /* ECMA-262 3rd Edition    11.5 */
 665 MultiplicativeExpression
 666         : UnaryExpression       { $$ = $1; }
 667         | MultiplicativeExpression '*' UnaryExpression
 668                                 { $$ = new_binary_expression(ctx, EXPR_MUL, $1, $3); }
 669         | MultiplicativeExpression '/' UnaryExpression
 670                                 { $$ = new_binary_expression(ctx, EXPR_DIV, $1, $3); }
 671         | MultiplicativeExpression '%' UnaryExpression
 672                                 { $$ = new_binary_expression(ctx, EXPR_MOD, $1, $3); }
 673
 674 /* ECMA-262 3rd Edition    11.4 */
 675 UnaryExpression
 676         : PostfixExpression     { $$ = $1; }
 677         | kDELETE UnaryExpression
 678                                 { $$ = new_unary_expression(ctx, EXPR_DELETE, $2); }
 679         | kVOID UnaryExpression { $$ = new_unary_expression(ctx, EXPR_VOID, $2); }
 680         | kTYPEOF UnaryExpression
 681                                 { $$ = new_unary_expression(ctx, EXPR_TYPEOF, $2); }
 682         | tINC UnaryExpression  { $$ = new_unary_expression(ctx, EXPR_PREINC, $2); }
 683         | tDEC UnaryExpression  { $$ = new_unary_expression(ctx, EXPR_PREDEC, $2); }
 684         | '+' UnaryExpression   { $$ = new_unary_expression(ctx, EXPR_PLUS, $2); }
 685         | '-' UnaryExpression   { $$ = new_unary_expression(ctx, EXPR_MINUS, $2); }
 686         | '~' UnaryExpression   { $$ = new_unary_expression(ctx, EXPR_BITNEG, $2); }
 687         | '!' UnaryExpression   { $$ = new_unary_expression(ctx, EXPR_LOGNEG, $2); }
 688
 689 /* ECMA-262 3rd Edition    11.2 */
 690 PostfixExpression
 691         : LeftHandSideExpression
 692                                 { $$ = $1; }
 693         | LeftHandSideExpression /* NONL */ tINC
 694                                 { $$ = new_unary_expression(ctx, EXPR_POSTINC, $1); }
 695         | LeftHandSideExpression /* NONL */ tDEC
 696                                 { $$ = new_unary_expression(ctx, EXPR_POSTDEC, $1); }
 697
 698
 699 /* ECMA-262 3rd Edition    11.2 */
 700 LeftHandSideExpression
 701         : NewExpression         { $$ = $1; }
 702         | CallExpression        { $$ = $1; }
 703
 704 /* ECMA-262 3rd Edition    11.2 */
 705 NewExpression
 706         : MemberExpression      { $$ = $1; }
 707         | kNEW NewExpression    { $$ = new_new_expression(ctx, $2, NULL); }
 708
 709 /* ECMA-262 3rd Edition    11.2 */
 710 MemberExpression
 711         : PrimaryExpression     { $$ = $1; }
 712         | FunctionExpression    { $$ = $1; }
 713         | MemberExpression '[' Expression ']'
 714                                 { $$ = new_array_expression(ctx, $1, $3); }
 715         | MemberExpression '.' tIdentifier
 716                                 { $$ = new_member_expression(ctx, $1, $3); }
 717         | kNEW MemberExpression Arguments
 718                                 { $$ = new_new_expression(ctx, $2, $3); }
 719
 720 /* ECMA-262 3rd Edition    11.2 */
 721 CallExpression
 722         : MemberExpression Arguments
 723                                 { $$ = new_call_expression(ctx, $1, $2); }
 724         | CallExpression Arguments
 725                                 { $$ = new_call_expression(ctx, $1, $2); }
 726         | CallExpression '[' Expression ']'
 727                                 { $$ = new_array_expression(ctx, $1, $3); }
 728         | CallExpression '.' tIdentifier
 729                                 { $$ = new_member_expression(ctx, $1, $3); }
 730
 731 /* ECMA-262 3rd Edition    11.2 */
 732 Arguments
 733         : '(' ')'               { $$ = NULL; }
 734         | '(' ArgumentList ')'  { $$ = $2; }
 735
 736 /* ECMA-262 3rd Edition    11.2 */
 737 ArgumentList
 738         : AssignmentExpression  { $$ = new_argument_list(ctx, $1); }
 739         | ArgumentList ',' AssignmentExpression
 740                                 { $$ = argument_list_add(ctx, $1, $3); }
 741
 742 /* ECMA-262 3rd Edition    11.1 */
 743 PrimaryExpression
 744         : kTHIS                 { $$ = new_this_expression(ctx); }
 745         | tIdentifier           { $$ = new_identifier_expression(ctx, $1); }
 746         | Literal               { $$ = new_literal_expression(ctx, $1); }
 747         | ArrayLiteral          { $$ = $1; }
 748         | ObjectLiteral         { $$ = $1; }
 749         | '(' Expression ')'    { $$ = $2; }
 750
 751 /* ECMA-262 3rd Edition    11.1.4 */
 752 ArrayLiteral
 753         : '[' ']'               { $$ = new_array_literal_expression(ctx, NULL, 0); }
 754         | '[' Elision ']'       { $$ = new_array_literal_expression(ctx, NULL, $2+1); }
 755         | '[' ElementList ']'   { $$ = new_array_literal_expression(ctx, $2, 0); }
 756         | '[' ElementList ',' Elision_opt ']'
 757                                 { $$ = new_array_literal_expression(ctx, $2, $4+1); }
 758
 759 /* ECMA-262 3rd Edition    11.1.4 */
 760 ElementList
 761         : Elision_opt AssignmentExpression
 762                                 { $$ = new_element_list(ctx, $1, $2); }
 763         | ElementList ',' Elision_opt AssignmentExpression
 764                                 { $$ = element_list_add(ctx, $1, $3, $4); }
 765
 766 /* ECMA-262 3rd Edition    11.1.4 */
 767 Elision
 768         : ','                   { $$ = 1; }
 769         | Elision ','           { $$ = $1 + 1; }
 770
 771 /* ECMA-262 3rd Edition    11.1.4 */
 772 Elision_opt
 773         : /* empty */           { $$ = 0; }
 774         | Elision               { $$ = $1; }
 775
 776 /* ECMA-262 3rd Edition    11.1.5 */
 777 ObjectLiteral
 778         : '{' '}'               { $$ = new_prop_and_value_expression(ctx, NULL); }
 779         | '{' PropertyNameAndValueList '}'
 780                                 { $$ = new_prop_and_value_expression(ctx, $2); }
 781
 782 /* ECMA-262 3rd Edition    11.1.5 */
 783 PropertyNameAndValueList
 784         : PropertyName ':' AssignmentExpression
 785                                 { $$ = new_property_list(ctx, $1, $3); }
 786         | PropertyNameAndValueList ',' PropertyName ':' AssignmentExpression
 787                                 { $$ = property_list_add(ctx, $1, $3, $5); }
 788
 789 /* ECMA-262 3rd Edition    11.1.5 */
 790 PropertyName
 791         : tIdentifier           { $$ = new_string_literal(ctx, $1); }
 792         | tStringLiteral        { $$ = new_string_literal(ctx, $1); }
 793         | tNumericLiteral       { $$ = $1; }
 794
 795 /* ECMA-262 3rd Edition    7.6 */
 796 Identifier_opt
 797         : /* empty*/            { $$ = NULL; }
 798         | tIdentifier           { $$ = $1; }
 799
 800 /* ECMA-262 3rd Edition    7.8 */
 801 Literal
 802         : kNULL                 { $$ = new_null_literal(ctx); }
 803         | kUNDEFINED            { $$ = new_undefined_literal(ctx); }
 804         | BooleanLiteral        { $$ = $1; }
 805         | tNumericLiteral       { $$ = $1; }
 806         | tStringLiteral        { $$ = new_string_literal(ctx, $1); }
 807         | '/'                   { $$ = parse_regexp(ctx);
 808                                   if(!$$) YYABORT; }
 809         | kDIVEQ                { $$ = parse_regexp(ctx);
 810                                   if(!$$) YYABORT; }
 811
 812 /* ECMA-262 3rd Edition    7.8.2 */
 813 BooleanLiteral
 814         : kTRUE                 { $$ = new_boolean_literal(ctx, VARIANT_TRUE); }
 815         | kFALSE                { $$ = new_boolean_literal(ctx, VARIANT_FALSE); }
 816
 817 semicolon_opt
 818         : ';'
 819         | error                 { if(!allow_auto_semicolon(ctx)) {YYABORT;} }
 820
 821 left_bracket
 822         : '('
 823         | error                 { set_error(ctx, IDS_LBRACKET); YYABORT; }
 824
 825 right_bracket
 826         : ')'
 827         | error                 { set_error(ctx, IDS_RBRACKET); YYABORT; }
 828
 829 semicolon
 830         : ';'
 831         | error                 { set_error(ctx, IDS_SEMICOLON); YYABORT; }
 832
 833 %%
 834
 835 static BOOL allow_auto_semicolon(parser_ctx_t *ctx)
 836 {
 837     return ctx->nl || ctx->ptr == ctx->end || *(ctx->ptr-1) == '}';
 838 }
 839
 840 static literal_t *new_string_literal(parser_ctx_t *ctx, const WCHAR *str)
 841 {
 842     literal_t *ret = parser_alloc(ctx, sizeof(literal_t));
 843
 844     ret->vt = VT_BSTR;
 845     ret->u.wstr = str;
 846
 847     return ret;
 848 }
 849
 850 static literal_t *new_null_literal(parser_ctx_t *ctx)
 851 {
 852     literal_t *ret = parser_alloc(ctx, sizeof(literal_t));
 853
 854     ret->vt = VT_NULL;
 855
 856     return ret;
 857 }
 858
 859 static literal_t *new_undefined_literal(parser_ctx_t *ctx)
 860 {
 861     literal_t *ret = parser_alloc(ctx, sizeof(literal_t));
 862
 863     ret->vt = VT_EMPTY;
 864
 865     return ret;
 866 }
 867
 868 static literal_t *new_boolean_literal(parser_ctx_t *ctx, VARIANT_BOOL bval)
 869 {
 870     literal_t *ret = parser_alloc(ctx, sizeof(literal_t));
 871
 872     ret->vt = VT_BOOL;
 873     ret->u.bval = bval;
 874
 875     return ret;
 876 }
 877
 878 static prop_val_t *new_prop_val(parser_ctx_t *ctx, literal_t *name, expression_t *value)
 879 {
 880     prop_val_t *ret = parser_alloc(ctx, sizeof(prop_val_t));
 881
 882     ret->name = name;
 883     ret->value = value;
 884     ret->next = NULL;
 885
 886     return ret;
 887 }
 888
 889 static property_list_t *new_property_list(parser_ctx_t *ctx, literal_t *name, expression_t *value)
 890 {
 891     property_list_t *ret = parser_alloc_tmp(ctx, sizeof(property_list_t));
 892
 893     ret->head = ret->tail = new_prop_val(ctx, name, value);
 894
 895     return ret;
 896 }
 897
 898 static property_list_t *property_list_add(parser_ctx_t *ctx, property_list_t *list, literal_t *name, expression_t *value)
 899 {
 900     list->tail = list->tail->next = new_prop_val(ctx, name, value);
 901
 902     return list;
 903 }
 904
 905 static array_element_t *new_array_element(parser_ctx_t *ctx, int elision, expression_t *expr)
 906 {
 907     array_element_t *ret = parser_alloc(ctx, sizeof(array_element_t));
 908
 909     ret->elision = elision;
 910     ret->expr = expr;
 911     ret->next = NULL;
 912
 913     return ret;
 914 }
 915
 916 static element_list_t *new_element_list(parser_ctx_t *ctx, int elision, expression_t *expr)
 917 {
 918     element_list_t *ret = parser_alloc_tmp(ctx, sizeof(element_list_t));
 919
 920     ret->head = ret->tail = new_array_element(ctx, elision, expr);
 921
 922     return ret;
 923 }
 924
 925 static element_list_t *element_list_add(parser_ctx_t *ctx, element_list_t *list, int elision, expression_t *expr)
 926 {
 927     list->tail = list->tail->next = new_array_element(ctx, elision, expr);
 928
 929     return list;
 930 }
 931
 932 static argument_t *new_argument(parser_ctx_t *ctx, expression_t *expr)
 933 {
 934     argument_t *ret = parser_alloc(ctx, sizeof(argument_t));
 935
 936     ret->expr = expr;
 937     ret->next = NULL;
 938
 939     return ret;
 940 }
 941
 942 static argument_list_t *new_argument_list(parser_ctx_t *ctx, expression_t *expr)
 943 {
 944     argument_list_t *ret = parser_alloc_tmp(ctx, sizeof(argument_list_t));
 945
 946     ret->head = ret->tail = new_argument(ctx, expr);
 947
 948     return ret;
 949 }
 950
 951 static argument_list_t *argument_list_add(parser_ctx_t *ctx, argument_list_t *list, expression_t *expr)
 952 {
 953     list->tail = list->tail->next = new_argument(ctx, expr);
 954
 955     return list;
 956 }
 957
 958 static catch_block_t *new_catch_block(parser_ctx_t *ctx, const WCHAR *identifier, statement_t *statement)
 959 {
 960     catch_block_t *ret = parser_alloc(ctx, sizeof(catch_block_t));
 961
 962     ret->identifier = identifier;
 963     ret->statement = statement;
 964
 965     return ret;
 966 }
 967
 968 static case_clausule_t *new_case_clausule(parser_ctx_t *ctx, expression_t *expr, statement_list_t *stat_list)
 969 {
 970     case_clausule_t *ret = parser_alloc(ctx, sizeof(case_clausule_t));
 971
 972     ret->expr = expr;
 973     ret->stat = stat_list ? stat_list->head : NULL;
 974     ret->next = NULL;
 975
 976     return ret;
 977 }
 978
 979 static case_list_t *new_case_list(parser_ctx_t *ctx, case_clausule_t *case_clausule)
 980 {
 981     case_list_t *ret = parser_alloc_tmp(ctx, sizeof(case_list_t));
 982
 983     ret->head = ret->tail = case_clausule;
 984
 985     return ret;
 986 }
 987
 988 static case_list_t *case_list_add(parser_ctx_t *ctx, case_list_t *list, case_clausule_t *case_clausule)
 989 {
 990     list->tail = list->tail->next = case_clausule;
 991
 992     return list;
 993 }
 994
 995 static case_clausule_t *new_case_block(parser_ctx_t *ctx, case_list_t *case_list1,
 996         case_clausule_t *default_clausule, case_list_t *case_list2)
 997 {
 998     case_clausule_t *ret = NULL, *iter = NULL, *iter2;
 999     statement_t *stat = NULL;
1000
1001     if(case_list1) {
1002         ret = case_list1->head;
1003         iter = case_list1->tail;
1004     }
1005
1006     if(default_clausule) {
1007         if(ret)
1008             iter = iter->next = default_clausule;
1009         else
1010             ret = iter = default_clausule;
1011     }
1012
1013     if(case_list2) {
1014         if(ret)
1015             iter->next = case_list2->head;
1016         else
1017             ret = case_list2->head;
1018     }
1019
1020     if(!ret)
1021         return NULL;
1022
1023     for(iter = ret; iter; iter = iter->next) {
1024         for(iter2 = iter; iter2 && !iter2->stat; iter2 = iter2->next);
1025         if(!iter2)
1026             break;
1027
1028         while(iter != iter2) {
1029             iter->stat = iter2->stat;
1030             iter = iter->next;
1031         }
1032
1033         if(stat) {
1034             while(stat->next)
1035                 stat = stat->next;
1036             stat->next = iter->stat;
1037         }else {
1038             stat = iter->stat;
1039         }
1040     }
1041
1042     return ret;
1043 }
1044
1045 static statement_t *new_block_statement(parser_ctx_t *ctx, statement_list_t *list)
1046 {
1047     block_statement_t *ret = parser_alloc(ctx, sizeof(block_statement_t));
1048
1049     ret->stat.eval = block_statement_eval;
1050     ret->stat.next = NULL;
1051     ret->stat_list = list ? list->head : NULL;
1052
1053     return &ret->stat;
1054 }
1055
1056 static variable_declaration_t *new_variable_declaration(parser_ctx_t *ctx, const WCHAR *identifier, expression_t *expr)
1057 {
1058     variable_declaration_t *ret = parser_alloc(ctx, sizeof(variable_declaration_t));
1059     var_list_t *var_list = parser_alloc(ctx, sizeof(var_list_t));
1060
1061     ret->identifier = identifier;
1062     ret->expr = expr;
1063     ret->next = NULL;
1064
1065     var_list->identifier = identifier;
1066     var_list->next = NULL;
1067
1068     if(ctx->func_stack->var_tail)
1069         ctx->func_stack->var_tail = ctx->func_stack->var_tail->next = var_list;
1070     else
1071         ctx->func_stack->var_head = ctx->func_stack->var_tail = var_list;
1072
1073     return ret;
1074 }
1075
1076 static variable_list_t *new_variable_list(parser_ctx_t *ctx, variable_declaration_t *decl)
1077 {
1078     variable_list_t *ret = parser_alloc_tmp(ctx, sizeof(variable_list_t));
1079
1080     ret->head = ret->tail = decl;
1081
1082     return ret;
1083 }
1084
1085 static variable_list_t *variable_list_add(parser_ctx_t *ctx, variable_list_t *list, variable_declaration_t *decl)
1086 {
1087     list->tail = list->tail->next = decl;
1088
1089     return list;
1090 }
1091
1092 static statement_t *new_var_statement(parser_ctx_t *ctx, variable_list_t *variable_list)
1093 {
1094     var_statement_t *ret = parser_alloc(ctx, sizeof(var_statement_t));
1095
1096     ret->stat.eval = var_statement_eval;
1097     ret->stat.next = NULL;
1098     ret->variable_list = variable_list->head;
1099
1100     return &ret->stat;
1101 }
1102
1103 static statement_t *new_empty_statement(parser_ctx_t *ctx)
1104 {
1105     statement_t *ret = parser_alloc(ctx, sizeof(statement_t));
1106
1107     ret->eval = empty_statement_eval;
1108     ret->next = NULL;
1109
1110     return ret;
1111 }
1112
1113 static statement_t *new_expression_statement(parser_ctx_t *ctx, expression_t *expr)
1114 {
1115     expression_statement_t *ret = parser_alloc(ctx, sizeof(expression_statement_t));
1116
1117     ret->stat.eval = expression_statement_eval;
1118     ret->stat.next = NULL;
1119     ret->expr = expr;
1120
1121     return &ret->stat;
1122 }
1123
1124 static statement_t *new_if_statement(parser_ctx_t *ctx, expression_t *expr, statement_t *if_stat, statement_t *else_stat)
1125 {
1126     if_statement_t *ret = parser_alloc(ctx, sizeof(if_statement_t));
1127
1128     ret->stat.eval = if_statement_eval;
1129     ret->stat.next = NULL;
1130     ret->expr = expr;
1131     ret->if_stat = if_stat;
1132     ret->else_stat = else_stat;
1133
1134     return &ret->stat;
1135 }
1136
1137 static statement_t *new_while_statement(parser_ctx_t *ctx, BOOL dowhile, expression_t *expr, statement_t *stat)
1138 {
1139     while_statement_t *ret = parser_alloc(ctx, sizeof(while_statement_t));
1140
1141     ret->stat.eval = while_statement_eval;
1142     ret->stat.next = NULL;
1143     ret->do_while = dowhile;
1144     ret->expr = expr;
1145     ret->statement = stat;
1146
1147     return &ret->stat;
1148 }
1149
1150 static statement_t *new_for_statement(parser_ctx_t *ctx, variable_list_t *variable_list, expression_t *begin_expr,
1151         expression_t *expr, expression_t *end_expr, statement_t *statement)
1152 {
1153     for_statement_t *ret = parser_alloc(ctx, sizeof(for_statement_t));
1154
1155     ret->stat.eval = for_statement_eval;
1156     ret->stat.next = NULL;
1157     ret->variable_list = variable_list ? variable_list->head : NULL;
1158     ret->begin_expr = begin_expr;
1159     ret->expr = expr;
1160     ret->end_expr = end_expr;
1161     ret->statement = statement;
1162
1163     return &ret->stat;
1164 }
1165
1166 static statement_t *new_forin_statement(parser_ctx_t *ctx, variable_declaration_t *variable, expression_t *expr,
1167         expression_t *in_expr, statement_t *statement)
1168 {
1169     forin_statement_t *ret = parser_alloc(ctx, sizeof(forin_statement_t));
1170
1171     ret->stat.eval = forin_statement_eval;
1172     ret->stat.next = NULL;
1173     ret->variable = variable;
1174     ret->expr = expr;
1175     ret->in_expr = in_expr;
1176     ret->statement = statement;
1177
1178     return &ret->stat;
1179 }
1180
1181 static statement_t *new_continue_statement(parser_ctx_t *ctx, const WCHAR *identifier)
1182 {
1183     branch_statement_t *ret = parser_alloc(ctx, sizeof(branch_statement_t));
1184
1185     ret->stat.eval = continue_statement_eval;
1186     ret->stat.next = NULL;
1187     ret->identifier = identifier;
1188
1189     return &ret->stat;
1190 }
1191
1192 static statement_t *new_break_statement(parser_ctx_t *ctx, const WCHAR *identifier)
1193 {
1194     branch_statement_t *ret = parser_alloc(ctx, sizeof(branch_statement_t));
1195
1196     ret->stat.eval = break_statement_eval;
1197     ret->stat.next = NULL;
1198     ret->identifier = identifier;
1199
1200     return &ret->stat;
1201 }
1202
1203 static statement_t *new_return_statement(parser_ctx_t *ctx, expression_t *expr)
1204 {
1205     expression_statement_t *ret = parser_alloc(ctx, sizeof(expression_statement_t));
1206
1207     ret->stat.eval = return_statement_eval;
1208     ret->stat.next = NULL;
1209     ret->expr = expr;
1210
1211     return &ret->stat;
1212 }
1213
1214 static statement_t *new_with_statement(parser_ctx_t *ctx, expression_t *expr, statement_t *statement)
1215 {
1216     with_statement_t *ret = parser_alloc(ctx, sizeof(with_statement_t));
1217
1218     ret->stat.eval = with_statement_eval;
1219     ret->stat.next = NULL;
1220     ret->expr = expr;
1221     ret->statement = statement;
1222
1223     return &ret->stat;
1224 }
1225
1226 static statement_t *new_labelled_statement(parser_ctx_t *ctx, const WCHAR *identifier, statement_t *statement)
1227 {
1228     labelled_statement_t *ret = parser_alloc(ctx, sizeof(labelled_statement_t));
1229
1230     ret->stat.eval = labelled_statement_eval;
1231     ret->stat.next = NULL;
1232     ret->identifier = identifier;
1233     ret->statement = statement;
1234
1235     return &ret->stat;
1236 }
1237
1238 static statement_t *new_switch_statement(parser_ctx_t *ctx, expression_t *expr, case_clausule_t *case_list)
1239 {
1240     switch_statement_t *ret = parser_alloc(ctx, sizeof(switch_statement_t));
1241
1242     ret->stat.eval = switch_statement_eval;
1243     ret->stat.next = NULL;
1244     ret->expr = expr;
1245     ret->case_list = case_list;
1246
1247     return &ret->stat;
1248 }
1249
1250 static statement_t *new_throw_statement(parser_ctx_t *ctx, expression_t *expr)
1251 {
1252     expression_statement_t *ret = parser_alloc(ctx, sizeof(expression_statement_t));
1253
1254     ret->stat.eval = throw_statement_eval;
1255     ret->stat.next = NULL;
1256     ret->expr = expr;
1257
1258     return &ret->stat;
1259 }
1260
1261 static statement_t *new_try_statement(parser_ctx_t *ctx, statement_t *try_statement,
1262        catch_block_t *catch_block, statement_t *finally_statement)
1263 {
1264     try_statement_t *ret = parser_alloc(ctx, sizeof(try_statement_t));
1265
1266     ret->stat.eval = try_statement_eval;
1267     ret->stat.next = NULL;
1268     ret->try_statement = try_statement;
1269     ret->catch_block = catch_block;
1270     ret->finally_statement = finally_statement;
1271
1272     return &ret->stat;
1273 }
1274
1275 static parameter_t *new_parameter(parser_ctx_t *ctx, const WCHAR *identifier)
1276 {
1277     parameter_t *ret = parser_alloc(ctx, sizeof(parameter_t));
1278
1279     ret->identifier = identifier;
1280     ret->next = NULL;
1281
1282     return ret;
1283 }
1284
1285 static parameter_list_t *new_parameter_list(parser_ctx_t *ctx, const WCHAR *identifier)
1286 {
1287     parameter_list_t *ret = parser_alloc_tmp(ctx, sizeof(parameter_list_t));
1288
1289     ret->head = ret->tail = new_parameter(ctx, identifier);
1290
1291     return ret;
1292 }
1293
1294 static parameter_list_t *parameter_list_add(parser_ctx_t *ctx, parameter_list_t *list, const WCHAR *identifier)
1295 {
1296     list->tail = list->tail->next = new_parameter(ctx, identifier);
1297
1298     return list;
1299 }
1300
1301 static expression_t *new_function_expression(parser_ctx_t *ctx, const WCHAR *identifier,
1302        parameter_list_t *parameter_list, source_elements_t *source_elements, const WCHAR *src_str, DWORD src_len)
1303 {
1304     function_expression_t *ret = parser_alloc(ctx, sizeof(function_expression_t));
1305
1306     ret->expr.eval = function_expression_eval;
1307     ret->identifier = identifier;
1308     ret->parameter_list = parameter_list ? parameter_list->head : NULL;
1309     ret->source_elements = source_elements;
1310     ret->src_str = src_str;
1311     ret->src_len = src_len;
1312
1313     if(ret->identifier) {
1314         function_declaration_t *decl = parser_alloc(ctx, sizeof(function_declaration_t));
1315
1316         decl->expr = ret;
1317         decl->next = NULL;
1318
1319         if(ctx->func_stack->func_tail)
1320             ctx->func_stack->func_tail = ctx->func_stack->func_tail->next = decl;
1321         else
1322             ctx->func_stack->func_head = ctx->func_stack->func_tail = decl;
1323     }
1324
1325     return &ret->expr;
1326 }
1327
1328 static const expression_eval_t expression_eval_table[] = {
1329    comma_expression_eval,
1330    logical_or_expression_eval,
1331    logical_and_expression_eval,
1332    binary_or_expression_eval,
1333    binary_xor_expression_eval,
1334    binary_and_expression_eval,
1335    instanceof_expression_eval,
1336    in_expression_eval,
1337    add_expression_eval,
1338    sub_expression_eval,
1339    mul_expression_eval,
1340    div_expression_eval,
1341    mod_expression_eval,
1342    delete_expression_eval,
1343    void_expression_eval,
1344    typeof_expression_eval,
1345    minus_expression_eval,
1346    plus_expression_eval,
1347    post_increment_expression_eval,
1348    post_decrement_expression_eval,
1349    pre_increment_expression_eval,
1350    pre_decrement_expression_eval,
1351    equal_expression_eval,
1352    equal2_expression_eval,
1353    not_equal_expression_eval,
1354    not_equal2_expression_eval,
1355    less_expression_eval,
1356    lesseq_expression_eval,
1357    greater_expression_eval,
1358    greatereq_expression_eval,
1359    binary_negation_expression_eval,
1360    logical_negation_expression_eval,
1361    left_shift_expression_eval,
1362    right_shift_expression_eval,
1363    right2_shift_expression_eval,
1364    assign_expression_eval,
1365    assign_lshift_expression_eval,
1366    assign_rshift_expression_eval,
1367    assign_rrshift_expression_eval,
1368    assign_add_expression_eval,
1369    assign_sub_expression_eval,
1370    assign_mul_expression_eval,
1371    assign_div_expression_eval,
1372    assign_mod_expression_eval,
1373    assign_and_expression_eval,
1374    assign_or_expression_eval,
1375    assign_xor_expression_eval,
1376 };
1377
1378 static expression_t *new_binary_expression(parser_ctx_t *ctx, expression_type_t type,
1379        expression_t *expression1, expression_t *expression2)
1380 {
1381     binary_expression_t *ret = parser_alloc(ctx, sizeof(binary_expression_t));
1382
1383     ret->expr.eval = expression_eval_table[type];
1384     ret->expression1 = expression1;
1385     ret->expression2 = expression2;
1386
1387     return &ret->expr;
1388 }
1389
1390 static expression_t *new_unary_expression(parser_ctx_t *ctx, expression_type_t type, expression_t *expression)
1391 {
1392     unary_expression_t *ret = parser_alloc(ctx, sizeof(unary_expression_t));
1393
1394     ret->expr.eval = expression_eval_table[type];
1395     ret->expression = expression;
1396
1397     return &ret->expr;
1398 }
1399
1400 static expression_t *new_conditional_expression(parser_ctx_t *ctx, expression_t *expression,
1401        expression_t *true_expression, expression_t *false_expression)
1402 {
1403     conditional_expression_t *ret = parser_alloc(ctx, sizeof(conditional_expression_t));
1404
1405     ret->expr.eval = conditional_expression_eval;
1406     ret->expression = expression;
1407     ret->true_expression = true_expression;
1408     ret->false_expression = false_expression;
1409
1410     return &ret->expr;
1411 }
1412
1413 static expression_t *new_array_expression(parser_ctx_t *ctx, expression_t *member_expr, expression_t *expression)
1414 {
1415     array_expression_t *ret = parser_alloc(ctx, sizeof(array_expression_t));
1416
1417     ret->expr.eval = array_expression_eval;
1418     ret->member_expr = member_expr;
1419     ret->expression = expression;
1420
1421     return &ret->expr;
1422 }
1423
1424 static expression_t *new_member_expression(parser_ctx_t *ctx, expression_t *expression, const WCHAR *identifier)
1425 {
1426     member_expression_t *ret = parser_alloc(ctx, sizeof(member_expression_t));
1427
1428     ret->expr.eval = member_expression_eval;
1429     ret->expression = expression;
1430     ret->identifier = identifier;
1431
1432     return &ret->expr;
1433 }
1434
1435 static expression_t *new_new_expression(parser_ctx_t *ctx, expression_t *expression, argument_list_t *argument_list)
1436 {
1437     call_expression_t *ret = parser_alloc(ctx, sizeof(call_expression_t));
1438
1439     ret->expr.eval = new_expression_eval;
1440     ret->expression = expression;
1441     ret->argument_list = argument_list ? argument_list->head : NULL;
1442
1443     return &ret->expr;
1444 }
1445
1446 static expression_t *new_call_expression(parser_ctx_t *ctx, expression_t *expression, argument_list_t *argument_list)
1447 {
1448     call_expression_t *ret = parser_alloc(ctx, sizeof(call_expression_t));
1449
1450     ret->expr.eval = call_expression_eval;
1451     ret->expression = expression;
1452     ret->argument_list = argument_list ? argument_list->head : NULL;
1453
1454     return &ret->expr;
1455 }
1456
1457 static expression_t *new_this_expression(parser_ctx_t *ctx)
1458 {
1459     expression_t *ret = parser_alloc(ctx, sizeof(expression_t));
1460
1461     ret->eval = this_expression_eval;
1462
1463     return ret;
1464 }
1465
1466 static int parser_error(const char *str)
1467 {
1468     return 0;
1469 }
1470
1471 static void set_error(parser_ctx_t *ctx, UINT error)
1472 {
1473     ctx->hres = JSCRIPT_ERROR|error;
1474 }
1475
1476 static BOOL explicit_error(parser_ctx_t *ctx, void *obj, WCHAR next)
1477 {
1478     if(obj || *(ctx->ptr-1)==next) return TRUE;
1479
1480     set_error(ctx, IDS_SYNTAX_ERROR);
1481     return FALSE;
1482 }
1483
1484
1485 static expression_t *new_identifier_expression(parser_ctx_t *ctx, const WCHAR *identifier)
1486 {
1487     identifier_expression_t *ret = parser_alloc(ctx, sizeof(identifier_expression_t));
1488
1489     ret->expr.eval = identifier_expression_eval;
1490     ret->identifier = identifier;
1491
1492     return &ret->expr;
1493 }
1494
1495 static expression_t *new_array_literal_expression(parser_ctx_t *ctx, element_list_t *element_list, int length)
1496 {
1497     array_literal_expression_t *ret = parser_alloc(ctx, sizeof(array_literal_expression_t));
1498
1499     ret->expr.eval = array_literal_expression_eval;
1500     ret->element_list = element_list ? element_list->head : NULL;
1501     ret->length = length;
1502
1503     return &ret->expr;
1504 }
1505
1506 static expression_t *new_prop_and_value_expression(parser_ctx_t *ctx, property_list_t *property_list)
1507 {
1508     property_value_expression_t *ret = parser_alloc(ctx, sizeof(property_value_expression_t));
1509
1510     ret->expr.eval = property_value_expression_eval;
1511     ret->property_list = property_list ? property_list->head : NULL;
1512
1513     return &ret->expr;
1514 }
1515
1516 static expression_t *new_literal_expression(parser_ctx_t *ctx, literal_t *literal)
1517 {
1518     literal_expression_t *ret = parser_alloc(ctx, sizeof(literal_expression_t));
1519
1520     ret->expr.eval = literal_expression_eval;
1521     ret->literal = literal;
1522
1523     return &ret->expr;
1524 }
1525
1526 static source_elements_t *new_source_elements(parser_ctx_t *ctx)
1527 {
1528     source_elements_t *ret = parser_alloc(ctx, sizeof(source_elements_t));
1529
1530     memset(ret, 0, sizeof(*ret));
1531
1532     return ret;
1533 }
1534
1535 static source_elements_t *source_elements_add_statement(source_elements_t *source_elements, statement_t *statement)
1536 {
1537     if(source_elements->statement_tail)
1538         source_elements->statement_tail = source_elements->statement_tail->next = statement;
1539     else
1540         source_elements->statement = source_elements->statement_tail = statement;
1541
1542     return source_elements;
1543 }
1544
1545 static statement_list_t *new_statement_list(parser_ctx_t *ctx, statement_t *statement)
1546 {
1547     statement_list_t *ret =  parser_alloc_tmp(ctx, sizeof(statement_list_t));
1548
1549     ret->head = ret->tail = statement;
1550
1551     return ret;
1552 }
1553
1554 static statement_list_t *statement_list_add(statement_list_t *list, statement_t *statement)
1555 {
1556     list->tail = list->tail->next = statement;
1557
1558     return list;
1559 }
1560
1561 static void push_func(parser_ctx_t *ctx)
1562 {
1563     func_stack_t *new_func = parser_alloc_tmp(ctx, sizeof(func_stack_t));
1564
1565     new_func->func_head = new_func->func_tail = NULL;
1566     new_func->var_head = new_func->var_tail = NULL;
1567
1568     new_func->next = ctx->func_stack;
1569     ctx->func_stack = new_func;
1570 }
1571
1572 static source_elements_t *function_body_parsed(parser_ctx_t *ctx, source_elements_t *source)
1573 {
1574     source->functions = ctx->func_stack->func_head;
1575     source->variables = ctx->func_stack->var_head;
1576     pop_func(ctx);
1577
1578     return source;
1579 }
1580
1581 static void program_parsed(parser_ctx_t *ctx, source_elements_t *source)
1582 {
1583     source->functions = ctx->func_stack->func_head;
1584     source->variables = ctx->func_stack->var_head;
1585     pop_func(ctx);
1586
1587     ctx->source = source;
1588     if(!ctx->lexer_error)
1589         ctx->hres = S_OK;
1590 }
1591
1592 void parser_release(parser_ctx_t *ctx)
1593 {
1594     obj_literal_t *iter;
1595
1596     if(--ctx->ref)
1597         return;
1598
1599     for(iter = ctx->obj_literals; iter; iter = iter->next)
1600         jsdisp_release(iter->obj);
1601
1602     jsheap_free(&ctx->heap);
1603     heap_free(ctx);
1604 }
1605
1606 HRESULT script_parse(script_ctx_t *ctx, const WCHAR *code, const WCHAR *delimiter,
1607         parser_ctx_t **ret)
1608 {
1609     parser_ctx_t *parser_ctx;
1610     jsheap_t *mark;
1611     HRESULT hres;
1612
1613     const WCHAR html_tagW[] = {'<','/','s','c','r','i','p','t','>',0};
1614
1615     parser_ctx = heap_alloc_zero(sizeof(parser_ctx_t));
1616     if(!parser_ctx)
1617         return E_OUTOFMEMORY;
1618
1619     parser_ctx->ref = 1;
1620     parser_ctx->hres = JSCRIPT_ERROR|IDS_SYNTAX_ERROR;
1621     parser_ctx->is_html = delimiter && !strcmpiW(delimiter, html_tagW);
1622
1623     parser_ctx->begin = parser_ctx->ptr = code;
1624     parser_ctx->end = code + strlenW(code);
1625
1626     script_addref(ctx);
1627     parser_ctx->script = ctx;
1628
1629     mark = jsheap_mark(&ctx->tmp_heap);
1630     jsheap_init(&parser_ctx->heap);
1631
1632     push_func(parser_ctx);
1633
1634     parser_parse(parser_ctx);
1635     jsheap_clear(mark);
1636     if(FAILED(parser_ctx->hres)) {
1637         hres = parser_ctx->hres;
1638         parser_release(parser_ctx);
1639         return hres;
1640     }
1641
1642     *ret = parser_ctx;
1643     return S_OK;
1644 }