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 #include "parser.h"
  24
  25 #include "wine/debug.h"
  26
  27 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
  28
  29 static int parser_error(parser_ctx_t*,const char*);
  30 static void set_error(parser_ctx_t*,UINT);
  31 static BOOL explicit_error(parser_ctx_t*,void*,WCHAR);
  32 static BOOL allow_auto_semicolon(parser_ctx_t*);
  33 static void program_parsed(parser_ctx_t*,source_elements_t*);
  34
  35 typedef struct _statement_list_t {
  36     statement_t *head;
  37     statement_t *tail;
  38 } statement_list_t;
  39
  40 static literal_t *new_string_literal(parser_ctx_t*,const WCHAR*);
  41 static literal_t *new_null_literal(parser_ctx_t*);
  42
  43 typedef struct _property_list_t {
  44     prop_val_t *head;
  45     prop_val_t *tail;
  46 } property_list_t;
  47
  48 static property_list_t *new_property_list(parser_ctx_t*,literal_t*,expression_t*);
  49 static property_list_t *property_list_add(parser_ctx_t*,property_list_t*,literal_t*,expression_t*);
  50
  51 typedef struct _element_list_t {
  52     array_element_t *head;
  53     array_element_t *tail;
  54 } element_list_t;
  55
  56 static element_list_t *new_element_list(parser_ctx_t*,int,expression_t*);
  57 static element_list_t *element_list_add(parser_ctx_t*,element_list_t*,int,expression_t*);
  58
  59 typedef struct _argument_list_t {
  60     argument_t *head;
  61     argument_t *tail;
  62 } argument_list_t;
  63
  64 static argument_list_t *new_argument_list(parser_ctx_t*,expression_t*);
  65 static argument_list_t *argument_list_add(parser_ctx_t*,argument_list_t*,expression_t*);
  66
  67 typedef struct _case_list_t {
  68     case_clausule_t *head;
  69     case_clausule_t *tail;
  70 } case_list_t;
  71
  72 static catch_block_t *new_catch_block(parser_ctx_t*,const WCHAR*,statement_t*);
  73 static case_clausule_t *new_case_clausule(parser_ctx_t*,expression_t*,statement_list_t*);
  74 static case_list_t *new_case_list(parser_ctx_t*,case_clausule_t*);
  75 static case_list_t *case_list_add(parser_ctx_t*,case_list_t*,case_clausule_t*);
  76 static case_clausule_t *new_case_block(parser_ctx_t*,case_list_t*,case_clausule_t*,case_list_t*);
  77
  78 typedef struct _variable_list_t {
  79     variable_declaration_t *head;
  80     variable_declaration_t *tail;
  81 } variable_list_t;
  82
  83 static variable_declaration_t *new_variable_declaration(parser_ctx_t*,const WCHAR*,expression_t*);
  84 static variable_list_t *new_variable_list(parser_ctx_t*,variable_declaration_t*);
  85 static variable_list_t *variable_list_add(parser_ctx_t*,variable_list_t*,variable_declaration_t*);
  86
  87 static void *new_statement(parser_ctx_t*,statement_type_t,size_t);
  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_expression_statement(parser_ctx_t*,expression_t*);
  91 static statement_t *new_if_statement(parser_ctx_t*,expression_t*,statement_t*,statement_t*);
  92 static statement_t *new_while_statement(parser_ctx_t*,BOOL,expression_t*,statement_t*);
  93 static statement_t *new_for_statement(parser_ctx_t*,variable_list_t*,expression_t*,expression_t*,
  94         expression_t*,statement_t*);
  95 static statement_t *new_forin_statement(parser_ctx_t*,variable_declaration_t*,expression_t*,expression_t*,statement_t*);
  96 static statement_t *new_continue_statement(parser_ctx_t*,const WCHAR*);
  97 static statement_t *new_break_statement(parser_ctx_t*,const WCHAR*);
  98 static statement_t *new_return_statement(parser_ctx_t*,expression_t*);
  99 static statement_t *new_with_statement(parser_ctx_t*,expression_t*,statement_t*);
 100 static statement_t *new_labelled_statement(parser_ctx_t*,const WCHAR*,statement_t*);
 101 static statement_t *new_switch_statement(parser_ctx_t*,expression_t*,case_clausule_t*);
 102 static statement_t *new_throw_statement(parser_ctx_t*,expression_t*);
 103 static statement_t *new_try_statement(parser_ctx_t*,statement_t*,catch_block_t*,statement_t*);
 104
 105 struct statement_list_t {
 106    statement_t *head;
 107    statement_t *tail;
 108 };
 109
 110 static statement_list_t *new_statement_list(parser_ctx_t*,statement_t*);
 111 static statement_list_t *statement_list_add(statement_list_t*,statement_t*);
 112
 113 typedef struct _parameter_list_t {
 114     parameter_t *head;
 115     parameter_t *tail;
 116 } parameter_list_t;
 117
 118 static parameter_list_t *new_parameter_list(parser_ctx_t*,const WCHAR*);
 119 static parameter_list_t *parameter_list_add(parser_ctx_t*,parameter_list_t*,const WCHAR*);
 120
 121 static void *new_expression(parser_ctx_t *ctx,expression_type_t,size_t);
 122 static expression_t *new_function_expression(parser_ctx_t*,const WCHAR*,parameter_list_t*,
 123         source_elements_t*,const WCHAR*,const WCHAR*,DWORD);
 124 static expression_t *new_binary_expression(parser_ctx_t*,expression_type_t,expression_t*,expression_t*);
 125 static expression_t *new_unary_expression(parser_ctx_t*,expression_type_t,expression_t*);
 126 static expression_t *new_conditional_expression(parser_ctx_t*,expression_t*,expression_t*,expression_t*);
 127 static expression_t *new_member_expression(parser_ctx_t*,expression_t*,const WCHAR*);
 128 static expression_t *new_new_expression(parser_ctx_t*,expression_t*,argument_list_t*);
 129 static expression_t *new_call_expression(parser_ctx_t*,expression_t*,argument_list_t*);
 130 static expression_t *new_identifier_expression(parser_ctx_t*,const WCHAR*);
 131 static expression_t *new_literal_expression(parser_ctx_t*,literal_t*);
 132 static expression_t *new_array_literal_expression(parser_ctx_t*,element_list_t*,int);
 133 static expression_t *new_prop_and_value_expression(parser_ctx_t*,property_list_t*);
 134
 135 static source_elements_t *new_source_elements(parser_ctx_t*);
 136 static source_elements_t *source_elements_add_statement(source_elements_t*,statement_t*);
 137
 138 %}
 139
 140 %lex-param { parser_ctx_t *ctx }
 141 %parse-param { parser_ctx_t *ctx }
 142 %pure-parser
 143 %start Program
 144
 145 %union {
 146     int                     ival;
 147     const WCHAR             *srcptr;
 148     LPCWSTR                 wstr;
 149     literal_t               *literal;
 150     struct _argument_list_t *argument_list;
 151     case_clausule_t         *case_clausule;
 152     struct _case_list_t     *case_list;
 153     catch_block_t           *catch_block;
 154     struct _element_list_t  *element_list;
 155     expression_t            *expr;
 156     const WCHAR            *identifier;
 157     struct _parameter_list_t *parameter_list;
 158     struct _property_list_t *property_list;
 159     source_elements_t       *source_elements;
 160     statement_t             *statement;
 161     struct _statement_list_t *statement_list;
 162     struct _variable_list_t *variable_list;
 163     variable_declaration_t  *variable_declaration;
 164 }
 165
 166 /* keywords */
 167 %token <identifier> kBREAK kCASE kCATCH kCONTINUE kDEFAULT kDELETE kDO kELSE kFUNCTION kIF kFINALLY kFOR kIN
 168 %token <identifier> kINSTANCEOF kNEW kNULL kRETURN kSWITCH kTHIS kTHROW kTRUE kFALSE kTRY kTYPEOF kVAR kVOID kWHILE kWITH
 169 %token tANDAND tOROR tINC tDEC tHTMLCOMMENT kDIVEQ kDCOL
 170
 171 %token <srcptr> '}'
 172
 173 /* tokens */
 174 %token <identifier> tIdentifier
 175 %token <ival> tAssignOper tEqOper tShiftOper tRelOper
 176 %token <literal> tNumericLiteral tBooleanLiteral
 177 %token <wstr> tStringLiteral
 178 %token tEOF
 179
 180 %type <source_elements> SourceElements
 181 %type <source_elements> FunctionBody
 182 %type <statement> Statement
 183 %type <statement> Block
 184 %type <statement> VariableStatement
 185 %type <statement> EmptyStatement
 186 %type <statement> ExpressionStatement
 187 %type <statement> IfStatement
 188 %type <statement> IterationStatement
 189 %type <statement> ContinueStatement
 190 %type <statement> BreakStatement
 191 %type <statement> ReturnStatement
 192 %type <statement> WithStatement
 193 %type <statement> LabelledStatement
 194 %type <statement> SwitchStatement
 195 %type <statement> ThrowStatement
 196 %type <statement> TryStatement
 197 %type <statement> Finally
 198 %type <statement_list> StatementList StatementList_opt
 199 %type <parameter_list> FormalParameterList FormalParameterList_opt
 200 %type <expr> Expression Expression_opt Expression_err
 201 %type <expr> ExpressionNoIn ExpressionNoIn_opt
 202 %type <expr> FunctionExpression
 203 %type <expr> AssignmentExpression AssignmentExpressionNoIn
 204 %type <expr> ConditionalExpression ConditionalExpressionNoIn
 205 %type <expr> LeftHandSideExpression
 206 %type <expr> LogicalORExpression LogicalORExpressionNoIn
 207 %type <expr> LogicalANDExpression LogicalANDExpressionNoIn
 208 %type <expr> BitwiseORExpression BitwiseORExpressionNoIn
 209 %type <expr> BitwiseXORExpression BitwiseXORExpressionNoIn
 210 %type <expr> BitwiseANDExpression BitwiseANDExpressionNoIn
 211 %type <expr> EqualityExpression EqualityExpressionNoIn
 212 %type <expr> RelationalExpression RelationalExpressionNoIn
 213 %type <expr> ShiftExpression
 214 %type <expr> AdditiveExpression
 215 %type <expr> MultiplicativeExpression
 216 %type <expr> Initialiser_opt Initialiser
 217 %type <expr> InitialiserNoIn_opt InitialiserNoIn
 218 %type <expr> UnaryExpression
 219 %type <expr> PostfixExpression
 220 %type <expr> NewExpression
 221 %type <expr> CallExpression
 222 %type <expr> MemberExpression
 223 %type <expr> PrimaryExpression
 224 %type <identifier> Identifier_opt
 225 %type <variable_list> VariableDeclarationList
 226 %type <variable_list> VariableDeclarationListNoIn
 227 %type <variable_declaration> VariableDeclaration
 228 %type <variable_declaration> VariableDeclarationNoIn
 229 %type <case_list> CaseClausules CaseClausules_opt
 230 %type <case_clausule> CaseClausule DefaultClausule CaseBlock
 231 %type <catch_block> Catch
 232 %type <argument_list> Arguments
 233 %type <argument_list> ArgumentList
 234 %type <literal> Literal
 235 %type <expr> ArrayLiteral
 236 %type <expr> ObjectLiteral
 237 %type <ival> Elision Elision_opt
 238 %type <element_list> ElementList
 239 %type <property_list> PropertyNameAndValueList
 240 %type <literal> PropertyName
 241 %type <literal> BooleanLiteral
 242 %type <srcptr> KFunction
 243 %type <ival> AssignOper
 244 %type <identifier> IdentifierName ReservedAsIdentifier
 245
 246 %nonassoc LOWER_THAN_ELSE
 247 %nonassoc kELSE
 248
 249 %%
 250
 251 /* ECMA-262 3rd Edition    14 */
 252 Program
 253        : SourceElements HtmlComment tEOF
 254                                 { program_parsed(ctx, $1); }
 255
 256 HtmlComment
 257         : tHTMLCOMMENT          {}
 258         | /* empty */           {}
 259
 260 /* ECMA-262 3rd Edition    14 */
 261 SourceElements
 262         : /* empty */           { $$ = new_source_elements(ctx); }
 263         | SourceElements Statement
 264                                 { $$ = source_elements_add_statement($1, $2); }
 265
 266 /* ECMA-262 3rd Edition    13 */
 267 FunctionExpression
 268         : KFunction left_bracket FormalParameterList_opt right_bracket '{' FunctionBody '}'
 269                                 { $$ = new_function_expression(ctx, NULL, $3, $6, NULL, $1, $7-$1+1); }
 270         | KFunction tIdentifier left_bracket FormalParameterList_opt right_bracket '{' FunctionBody '}'
 271                                 { $$ = new_function_expression(ctx, $2, $4, $7, NULL, $1, $8-$1+1); }
 272         | KFunction tIdentifier kDCOL tIdentifier left_bracket FormalParameterList_opt right_bracket '{' FunctionBody '}'
 273                                 { $$ = new_function_expression(ctx, $4, $6, $9, $2, $1, $10-$1+1); }
 274
 275 KFunction
 276         : kFUNCTION             { $$ = ctx->ptr - 8; }
 277
 278 /* ECMA-262 3rd Edition    13 */
 279 FunctionBody
 280         : SourceElements        { $$ = $1; }
 281
 282 /* ECMA-262 3rd Edition    13 */
 283 FormalParameterList
 284         : tIdentifier           { $$ = 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    { $$ = new_expression_statement(ctx, $1); }
 299         | ExpressionStatement   { $$ = $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_statement(ctx, STAT_EMPTY, 0); }
 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, JS_E_SYNTAX); 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_binary_expression(ctx, EXPR_ARRAY, $1, $3); }
 715         | MemberExpression '.' IdentifierName
 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                                 { $$ = new_binary_expression(ctx, EXPR_ARRAY, $1, $3); }
 728         | CallExpression '.' IdentifierName
 729                                 { $$ = 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                 { $$ = new_expression(ctx, EXPR_THIS, 0); }
 745         | tIdentifier           { $$ = 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         : IdentifierName        { $$ = new_string_literal(ctx, $1); }
 792         | tStringLiteral        { $$ = new_string_literal(ctx, $1); }
 793         | tNumericLiteral       { $$ = $1; }
 794
 795 /* ECMA-262 3rd Edition    7.6 */
 796 Identifier_opt
 797         : /* empty*/            { $$ = NULL; }
 798         | tIdentifier           { $$ = $1; }
 799
 800 /* ECMA-262 5.1 Edition    7.6 */
 801 IdentifierName
 802         : tIdentifier           { $$ = $1; }
 803         | ReservedAsIdentifier
 804         {
 805             if(ctx->script->version < SCRIPTLANGUAGEVERSION_ES5) {
 806                 WARN("%s keyword used as an identifier in legacy mode.\n",
 807                      debugstr_w($1));
 808                 YYABORT;
 809             }
 810             $$ = $1;
 811         }
 812
 813 ReservedAsIdentifier
 814         : kBREAK                { $$ = $1; }
 815         | kCASE                 { $$ = $1; }
 816         | kCATCH                { $$ = $1; }
 817         | kCONTINUE             { $$ = $1; }
 818         | kDEFAULT              { $$ = $1; }
 819         | kDELETE               { $$ = $1; }
 820         | kDO                   { $$ = $1; }
 821         | kELSE                 { $$ = $1; }
 822         | kFALSE                { $$ = $1; }
 823         | kFINALLY              { $$ = $1; }
 824         | kFOR                  { $$ = $1; }
 825         | kFUNCTION             { $$ = $1; }
 826         | kIF                   { $$ = $1; }
 827         | kIN                   { $$ = $1; }
 828         | kINSTANCEOF           { $$ = $1; }
 829         | kNEW                  { $$ = $1; }
 830         | kNULL                 { $$ = $1; }
 831         | kRETURN               { $$ = $1; }
 832         | kSWITCH               { $$ = $1; }
 833         | kTHIS                 { $$ = $1; }
 834         | kTHROW                { $$ = $1; }
 835         | kTRUE                 { $$ = $1; }
 836         | kTRY                  { $$ = $1; }
 837         | kTYPEOF               { $$ = $1; }
 838         | kVAR                  { $$ = $1; }
 839         | kVOID                 { $$ = $1; }
 840         | kWHILE                { $$ = $1; }
 841         | kWITH                 { $$ = $1; }
 842
 843 /* ECMA-262 3rd Edition    7.8 */
 844 Literal
 845         : kNULL                 { $$ = new_null_literal(ctx); }
 846         | BooleanLiteral        { $$ = $1; }
 847         | tNumericLiteral       { $$ = $1; }
 848         | tStringLiteral        { $$ = new_string_literal(ctx, $1); }
 849         | '/'                   { $$ = parse_regexp(ctx);
 850                                   if(!$$) YYABORT; }
 851         | kDIVEQ                { $$ = parse_regexp(ctx);
 852                                   if(!$$) YYABORT; }
 853
 854 /* ECMA-262 3rd Edition    7.8.2 */
 855 BooleanLiteral
 856         : kTRUE                 { $$ = new_boolean_literal(ctx, VARIANT_TRUE); }
 857         | kFALSE                { $$ = new_boolean_literal(ctx, VARIANT_FALSE); }
 858         | tBooleanLiteral       { $$ = $1; }
 859
 860 semicolon_opt
 861         : ';'
 862         | error                 { if(!allow_auto_semicolon(ctx)) {YYABORT;} }
 863
 864 left_bracket
 865         : '('
 866         | error                 { set_error(ctx, JS_E_MISSING_LBRACKET); YYABORT; }
 867
 868 right_bracket
 869         : ')'
 870         | error                 { set_error(ctx, JS_E_MISSING_RBRACKET); YYABORT; }
 871
 872 semicolon
 873         : ';'
 874         | error                 { set_error(ctx, JS_E_MISSING_SEMICOLON); YYABORT; }
 875
 876 %%
 877
 878 static BOOL allow_auto_semicolon(parser_ctx_t *ctx)
 879 {
 880     return ctx->nl || ctx->ptr == ctx->end || *(ctx->ptr-1) == '}';
 881 }
 882
 883 static void *new_statement(parser_ctx_t *ctx, statement_type_t type, size_t size)
 884 {
 885     statement_t *stat;
 886
 887     stat = parser_alloc(ctx, size ? size : sizeof(*stat));
 888     if(!stat)
 889         return NULL;
 890
 891     stat->type = type;
 892     stat->next = NULL;
 893
 894     return stat;
 895 }
 896
 897 static literal_t *new_string_literal(parser_ctx_t *ctx, const WCHAR *str)
 898 {
 899     literal_t *ret = parser_alloc(ctx, sizeof(literal_t));
 900
 901     ret->type = LT_STRING;
 902     ret->u.wstr = str;
 903
 904     return ret;
 905 }
 906
 907 static literal_t *new_null_literal(parser_ctx_t *ctx)
 908 {
 909     literal_t *ret = parser_alloc(ctx, sizeof(literal_t));
 910
 911     ret->type = LT_NULL;
 912
 913     return ret;
 914 }
 915
 916 static prop_val_t *new_prop_val(parser_ctx_t *ctx, literal_t *name, expression_t *value)
 917 {
 918     prop_val_t *ret = parser_alloc(ctx, sizeof(prop_val_t));
 919
 920     ret->name = name;
 921     ret->value = value;
 922     ret->next = NULL;
 923
 924     return ret;
 925 }
 926
 927 static property_list_t *new_property_list(parser_ctx_t *ctx, literal_t *name, expression_t *value)
 928 {
 929     property_list_t *ret = parser_alloc_tmp(ctx, sizeof(property_list_t));
 930
 931     ret->head = ret->tail = new_prop_val(ctx, name, value);
 932
 933     return ret;
 934 }
 935
 936 static property_list_t *property_list_add(parser_ctx_t *ctx, property_list_t *list, literal_t *name, expression_t *value)
 937 {
 938     list->tail = list->tail->next = new_prop_val(ctx, name, value);
 939
 940     return list;
 941 }
 942
 943 static array_element_t *new_array_element(parser_ctx_t *ctx, int elision, expression_t *expr)
 944 {
 945     array_element_t *ret = parser_alloc(ctx, sizeof(array_element_t));
 946
 947     ret->elision = elision;
 948     ret->expr = expr;
 949     ret->next = NULL;
 950
 951     return ret;
 952 }
 953
 954 static element_list_t *new_element_list(parser_ctx_t *ctx, int elision, expression_t *expr)
 955 {
 956     element_list_t *ret = parser_alloc_tmp(ctx, sizeof(element_list_t));
 957
 958     ret->head = ret->tail = new_array_element(ctx, elision, expr);
 959
 960     return ret;
 961 }
 962
 963 static element_list_t *element_list_add(parser_ctx_t *ctx, element_list_t *list, int elision, expression_t *expr)
 964 {
 965     list->tail = list->tail->next = new_array_element(ctx, elision, expr);
 966
 967     return list;
 968 }
 969
 970 static argument_t *new_argument(parser_ctx_t *ctx, expression_t *expr)
 971 {
 972     argument_t *ret = parser_alloc(ctx, sizeof(argument_t));
 973
 974     ret->expr = expr;
 975     ret->next = NULL;
 976
 977     return ret;
 978 }
 979
 980 static argument_list_t *new_argument_list(parser_ctx_t *ctx, expression_t *expr)
 981 {
 982     argument_list_t *ret = parser_alloc_tmp(ctx, sizeof(argument_list_t));
 983
 984     ret->head = ret->tail = new_argument(ctx, expr);
 985
 986     return ret;
 987 }
 988
 989 static argument_list_t *argument_list_add(parser_ctx_t *ctx, argument_list_t *list, expression_t *expr)
 990 {
 991     list->tail = list->tail->next = new_argument(ctx, expr);
 992
 993     return list;
 994 }
 995
 996 static catch_block_t *new_catch_block(parser_ctx_t *ctx, const WCHAR *identifier, statement_t *statement)
 997 {
 998     catch_block_t *ret = parser_alloc(ctx, sizeof(catch_block_t));
 999
1000     ret->identifier = identifier;
1001     ret->statement = statement;
1002
1003     return ret;
1004 }
1005
1006 static case_clausule_t *new_case_clausule(parser_ctx_t *ctx, expression_t *expr, statement_list_t *stat_list)
1007 {
1008     case_clausule_t *ret = parser_alloc(ctx, sizeof(case_clausule_t));
1009
1010     ret->expr = expr;
1011     ret->stat = stat_list ? stat_list->head : NULL;
1012     ret->next = NULL;
1013
1014     return ret;
1015 }
1016
1017 static case_list_t *new_case_list(parser_ctx_t *ctx, case_clausule_t *case_clausule)
1018 {
1019     case_list_t *ret = parser_alloc_tmp(ctx, sizeof(case_list_t));
1020
1021     ret->head = ret->tail = case_clausule;
1022
1023     return ret;
1024 }
1025
1026 static case_list_t *case_list_add(parser_ctx_t *ctx, case_list_t *list, case_clausule_t *case_clausule)
1027 {
1028     list->tail = list->tail->next = case_clausule;
1029
1030     return list;
1031 }
1032
1033 static case_clausule_t *new_case_block(parser_ctx_t *ctx, case_list_t *case_list1,
1034         case_clausule_t *default_clausule, case_list_t *case_list2)
1035 {
1036     case_clausule_t *ret = NULL, *iter = NULL, *iter2;
1037     statement_t *stat = NULL;
1038
1039     if(case_list1) {
1040         ret = case_list1->head;
1041         iter = case_list1->tail;
1042     }
1043
1044     if(default_clausule) {
1045         if(ret)
1046             iter = iter->next = default_clausule;
1047         else
1048             ret = iter = default_clausule;
1049     }
1050
1051     if(case_list2) {
1052         if(ret)
1053             iter->next = case_list2->head;
1054         else
1055             ret = case_list2->head;
1056     }
1057
1058     if(!ret)
1059         return NULL;
1060
1061     for(iter = ret; iter; iter = iter->next) {
1062         for(iter2 = iter; iter2 && !iter2->stat; iter2 = iter2->next);
1063         if(!iter2)
1064             break;
1065
1066         while(iter != iter2) {
1067             iter->stat = iter2->stat;
1068             iter = iter->next;
1069         }
1070
1071         if(stat) {
1072             while(stat->next)
1073                 stat = stat->next;
1074             stat->next = iter->stat;
1075         }else {
1076             stat = iter->stat;
1077         }
1078     }
1079
1080     return ret;
1081 }
1082
1083 static statement_t *new_block_statement(parser_ctx_t *ctx, statement_list_t *list)
1084 {
1085     block_statement_t *ret;
1086
1087     ret = new_statement(ctx, STAT_BLOCK, sizeof(*ret));
1088     if(!ret)
1089         return NULL;
1090
1091     ret->stat_list = list ? list->head : NULL;
1092
1093     return &ret->stat;
1094 }
1095
1096 static variable_declaration_t *new_variable_declaration(parser_ctx_t *ctx, const WCHAR *identifier, expression_t *expr)
1097 {
1098     variable_declaration_t *ret = parser_alloc(ctx, sizeof(variable_declaration_t));
1099
1100     ret->identifier = identifier;
1101     ret->expr = expr;
1102     ret->next = NULL;
1103     ret->global_next = NULL;
1104
1105     return ret;
1106 }
1107
1108 static variable_list_t *new_variable_list(parser_ctx_t *ctx, variable_declaration_t *decl)
1109 {
1110     variable_list_t *ret = parser_alloc_tmp(ctx, sizeof(variable_list_t));
1111
1112     ret->head = ret->tail = decl;
1113
1114     return ret;
1115 }
1116
1117 static variable_list_t *variable_list_add(parser_ctx_t *ctx, variable_list_t *list, variable_declaration_t *decl)
1118 {
1119     list->tail = list->tail->next = decl;
1120
1121     return list;
1122 }
1123
1124 static statement_t *new_var_statement(parser_ctx_t *ctx, variable_list_t *variable_list)
1125 {
1126     var_statement_t *ret;
1127
1128     ret = new_statement(ctx, STAT_VAR, sizeof(*ret));
1129     if(!ret)
1130         return NULL;
1131
1132     ret->variable_list = variable_list->head;
1133
1134     return &ret->stat;
1135 }
1136
1137 static statement_t *new_expression_statement(parser_ctx_t *ctx, expression_t *expr)
1138 {
1139     expression_statement_t *ret;
1140
1141     ret = new_statement(ctx, STAT_EXPR, sizeof(*ret));
1142     if(!ret)
1143         return NULL;
1144
1145     ret->expr = expr;
1146
1147     return &ret->stat;
1148 }
1149
1150 static statement_t *new_if_statement(parser_ctx_t *ctx, expression_t *expr, statement_t *if_stat, statement_t *else_stat)
1151 {
1152     if_statement_t *ret;
1153
1154     ret = new_statement(ctx, STAT_IF, sizeof(*ret));
1155     if(!ret)
1156         return NULL;
1157
1158     ret->expr = expr;
1159     ret->if_stat = if_stat;
1160     ret->else_stat = else_stat;
1161
1162     return &ret->stat;
1163 }
1164
1165 static statement_t *new_while_statement(parser_ctx_t *ctx, BOOL dowhile, expression_t *expr, statement_t *stat)
1166 {
1167     while_statement_t *ret;
1168
1169     ret = new_statement(ctx, STAT_WHILE, sizeof(*ret));
1170     if(!ret)
1171         return NULL;
1172
1173     ret->do_while = dowhile;
1174     ret->expr = expr;
1175     ret->statement = stat;
1176
1177     return &ret->stat;
1178 }
1179
1180 static statement_t *new_for_statement(parser_ctx_t *ctx, variable_list_t *variable_list, expression_t *begin_expr,
1181         expression_t *expr, expression_t *end_expr, statement_t *statement)
1182 {
1183     for_statement_t *ret;
1184
1185     ret = new_statement(ctx, STAT_FOR, sizeof(*ret));
1186     if(!ret)
1187         return NULL;
1188
1189     ret->variable_list = variable_list ? variable_list->head : NULL;
1190     ret->begin_expr = begin_expr;
1191     ret->expr = expr;
1192     ret->end_expr = end_expr;
1193     ret->statement = statement;
1194
1195     return &ret->stat;
1196 }
1197
1198 static statement_t *new_forin_statement(parser_ctx_t *ctx, variable_declaration_t *variable, expression_t *expr,
1199         expression_t *in_expr, statement_t *statement)
1200 {
1201     forin_statement_t *ret;
1202
1203     ret = new_statement(ctx, STAT_FORIN, sizeof(*ret));
1204     if(!ret)
1205         return NULL;
1206
1207     ret->variable = variable;
1208     ret->expr = expr;
1209     ret->in_expr = in_expr;
1210     ret->statement = statement;
1211
1212     return &ret->stat;
1213 }
1214
1215 static statement_t *new_continue_statement(parser_ctx_t *ctx, const WCHAR *identifier)
1216 {
1217     branch_statement_t *ret;
1218
1219     ret = new_statement(ctx, STAT_CONTINUE, sizeof(*ret));
1220     if(!ret)
1221         return NULL;
1222
1223     ret->identifier = identifier;
1224
1225     return &ret->stat;
1226 }
1227
1228 static statement_t *new_break_statement(parser_ctx_t *ctx, const WCHAR *identifier)
1229 {
1230     branch_statement_t *ret;
1231
1232     ret = new_statement(ctx, STAT_BREAK, sizeof(*ret));
1233     if(!ret)
1234         return NULL;
1235
1236     ret->identifier = identifier;
1237
1238     return &ret->stat;
1239 }
1240
1241 static statement_t *new_return_statement(parser_ctx_t *ctx, expression_t *expr)
1242 {
1243     expression_statement_t *ret;
1244
1245     ret = new_statement(ctx, STAT_RETURN, sizeof(*ret));
1246     if(!ret)
1247         return NULL;
1248
1249     ret->expr = expr;
1250
1251     return &ret->stat;
1252 }
1253
1254 static statement_t *new_with_statement(parser_ctx_t *ctx, expression_t *expr, statement_t *statement)
1255 {
1256     with_statement_t *ret;
1257
1258     ret = new_statement(ctx, STAT_WITH, sizeof(*ret));
1259     if(!ret)
1260         return NULL;
1261
1262     ret->expr = expr;
1263     ret->statement = statement;
1264
1265     return &ret->stat;
1266 }
1267
1268 static statement_t *new_labelled_statement(parser_ctx_t *ctx, const WCHAR *identifier, statement_t *statement)
1269 {
1270     labelled_statement_t *ret;
1271
1272     ret = new_statement(ctx, STAT_LABEL, sizeof(*ret));
1273     if(!ret)
1274         return NULL;
1275
1276     ret->identifier = identifier;
1277     ret->statement = statement;
1278
1279     return &ret->stat;
1280 }
1281
1282 static statement_t *new_switch_statement(parser_ctx_t *ctx, expression_t *expr, case_clausule_t *case_list)
1283 {
1284     switch_statement_t *ret;
1285
1286     ret = new_statement(ctx, STAT_SWITCH, sizeof(*ret));
1287     if(!ret)
1288         return NULL;
1289
1290     ret->expr = expr;
1291     ret->case_list = case_list;
1292
1293     return &ret->stat;
1294 }
1295
1296 static statement_t *new_throw_statement(parser_ctx_t *ctx, expression_t *expr)
1297 {
1298     expression_statement_t *ret;
1299
1300     ret = new_statement(ctx, STAT_THROW, sizeof(*ret));
1301     if(!ret)
1302         return NULL;
1303
1304     ret->expr = expr;
1305
1306     return &ret->stat;
1307 }
1308
1309 static statement_t *new_try_statement(parser_ctx_t *ctx, statement_t *try_statement,
1310        catch_block_t *catch_block, statement_t *finally_statement)
1311 {
1312     try_statement_t *ret;
1313
1314     ret = new_statement(ctx, STAT_TRY, sizeof(*ret));
1315     if(!ret)
1316         return NULL;
1317
1318     ret->try_statement = try_statement;
1319     ret->catch_block = catch_block;
1320     ret->finally_statement = finally_statement;
1321
1322     return &ret->stat;
1323 }
1324
1325 static parameter_t *new_parameter(parser_ctx_t *ctx, const WCHAR *identifier)
1326 {
1327     parameter_t *ret = parser_alloc(ctx, sizeof(parameter_t));
1328
1329     ret->identifier = identifier;
1330     ret->next = NULL;
1331
1332     return ret;
1333 }
1334
1335 static parameter_list_t *new_parameter_list(parser_ctx_t *ctx, const WCHAR *identifier)
1336 {
1337     parameter_list_t *ret = parser_alloc_tmp(ctx, sizeof(parameter_list_t));
1338
1339     ret->head = ret->tail = new_parameter(ctx, identifier);
1340
1341     return ret;
1342 }
1343
1344 static parameter_list_t *parameter_list_add(parser_ctx_t *ctx, parameter_list_t *list, const WCHAR *identifier)
1345 {
1346     list->tail = list->tail->next = new_parameter(ctx, identifier);
1347
1348     return list;
1349 }
1350
1351 static expression_t *new_function_expression(parser_ctx_t *ctx, const WCHAR *identifier, parameter_list_t *parameter_list,
1352     source_elements_t *source_elements, const WCHAR *event_target, const WCHAR *src_str, DWORD src_len)
1353 {
1354     function_expression_t *ret = new_expression(ctx, EXPR_FUNC, sizeof(*ret));
1355
1356     ret->identifier = identifier;
1357     ret->parameter_list = parameter_list ? parameter_list->head : NULL;
1358     ret->source_elements = source_elements;
1359     ret->event_target = event_target;
1360     ret->src_str = src_str;
1361     ret->src_len = src_len;
1362     ret->next = NULL;
1363
1364     return &ret->expr;
1365 }
1366
1367 static void *new_expression(parser_ctx_t *ctx, expression_type_t type, size_t size)
1368 {
1369     expression_t *ret = parser_alloc(ctx, size ? size : sizeof(*ret));
1370
1371     ret->type = type;
1372
1373     return ret;
1374 }
1375
1376 static expression_t *new_binary_expression(parser_ctx_t *ctx, expression_type_t type,
1377        expression_t *expression1, expression_t *expression2)
1378 {
1379     binary_expression_t *ret = new_expression(ctx, type, sizeof(*ret));
1380
1381     ret->expression1 = expression1;
1382     ret->expression2 = expression2;
1383
1384     return &ret->expr;
1385 }
1386
1387 static expression_t *new_unary_expression(parser_ctx_t *ctx, expression_type_t type, expression_t *expression)
1388 {
1389     unary_expression_t *ret = new_expression(ctx, type, sizeof(*ret));
1390
1391     ret->expression = expression;
1392
1393     return &ret->expr;
1394 }
1395
1396 static expression_t *new_conditional_expression(parser_ctx_t *ctx, expression_t *expression,
1397        expression_t *true_expression, expression_t *false_expression)
1398 {
1399     conditional_expression_t *ret = new_expression(ctx, EXPR_COND, sizeof(*ret));
1400
1401     ret->expression = expression;
1402     ret->true_expression = true_expression;
1403     ret->false_expression = false_expression;
1404
1405     return &ret->expr;
1406 }
1407
1408 static expression_t *new_member_expression(parser_ctx_t *ctx, expression_t *expression, const WCHAR *identifier)
1409 {
1410     member_expression_t *ret = new_expression(ctx, EXPR_MEMBER, sizeof(*ret));
1411
1412     ret->expression = expression;
1413     ret->identifier = identifier;
1414
1415     return &ret->expr;
1416 }
1417
1418 static expression_t *new_new_expression(parser_ctx_t *ctx, expression_t *expression, argument_list_t *argument_list)
1419 {
1420     call_expression_t *ret = new_expression(ctx, EXPR_NEW, sizeof(*ret));
1421
1422     ret->expression = expression;
1423     ret->argument_list = argument_list ? argument_list->head : NULL;
1424
1425     return &ret->expr;
1426 }
1427
1428 static expression_t *new_call_expression(parser_ctx_t *ctx, expression_t *expression, argument_list_t *argument_list)
1429 {
1430     call_expression_t *ret = new_expression(ctx, EXPR_CALL, sizeof(*ret));
1431
1432     ret->expression = expression;
1433     ret->argument_list = argument_list ? argument_list->head : NULL;
1434
1435     return &ret->expr;
1436 }
1437
1438 static int parser_error(parser_ctx_t *ctx, const char *str)
1439 {
1440     return 0;
1441 }
1442
1443 static void set_error(parser_ctx_t *ctx, UINT error)
1444 {
1445     ctx->hres = error;
1446 }
1447
1448 static BOOL explicit_error(parser_ctx_t *ctx, void *obj, WCHAR next)
1449 {
1450     if(obj || *(ctx->ptr-1)==next) return TRUE;
1451
1452     set_error(ctx, JS_E_SYNTAX);
1453     return FALSE;
1454 }
1455
1456
1457 static expression_t *new_identifier_expression(parser_ctx_t *ctx, const WCHAR *identifier)
1458 {
1459     identifier_expression_t *ret = new_expression(ctx, EXPR_IDENT, sizeof(*ret));
1460
1461     ret->identifier = identifier;
1462
1463     return &ret->expr;
1464 }
1465
1466 static expression_t *new_array_literal_expression(parser_ctx_t *ctx, element_list_t *element_list, int length)
1467 {
1468     array_literal_expression_t *ret = new_expression(ctx, EXPR_ARRAYLIT, sizeof(*ret));
1469
1470     ret->element_list = element_list ? element_list->head : NULL;
1471     ret->length = length;
1472
1473     return &ret->expr;
1474 }
1475
1476 static expression_t *new_prop_and_value_expression(parser_ctx_t *ctx, property_list_t *property_list)
1477 {
1478     property_value_expression_t *ret = new_expression(ctx, EXPR_PROPVAL, sizeof(*ret));
1479
1480     ret->property_list = property_list ? property_list->head : NULL;
1481
1482     return &ret->expr;
1483 }
1484
1485 static expression_t *new_literal_expression(parser_ctx_t *ctx, literal_t *literal)
1486 {
1487     literal_expression_t *ret = new_expression(ctx, EXPR_LITERAL, sizeof(*ret));
1488
1489     ret->literal = literal;
1490
1491     return &ret->expr;
1492 }
1493
1494 static source_elements_t *new_source_elements(parser_ctx_t *ctx)
1495 {
1496     source_elements_t *ret = parser_alloc(ctx, sizeof(source_elements_t));
1497
1498     memset(ret, 0, sizeof(*ret));
1499
1500     return ret;
1501 }
1502
1503 static source_elements_t *source_elements_add_statement(source_elements_t *source_elements, statement_t *statement)
1504 {
1505     if(source_elements->statement_tail)
1506         source_elements->statement_tail = source_elements->statement_tail->next = statement;
1507     else
1508         source_elements->statement = source_elements->statement_tail = statement;
1509
1510     return source_elements;
1511 }
1512
1513 static statement_list_t *new_statement_list(parser_ctx_t *ctx, statement_t *statement)
1514 {
1515     statement_list_t *ret =  parser_alloc_tmp(ctx, sizeof(statement_list_t));
1516
1517     ret->head = ret->tail = statement;
1518
1519     return ret;
1520 }
1521
1522 static statement_list_t *statement_list_add(statement_list_t *list, statement_t *statement)
1523 {
1524     list->tail = list->tail->next = statement;
1525
1526     return list;
1527 }
1528
1529 static void program_parsed(parser_ctx_t *ctx, source_elements_t *source)
1530 {
1531     ctx->source = source;
1532     if(!ctx->lexer_error)
1533         ctx->hres = S_OK;
1534 }
1535
1536 void parser_release(parser_ctx_t *ctx)
1537 {
1538     script_release(ctx->script);
1539     heap_pool_free(&ctx->heap);
1540     heap_free(ctx);
1541 }
1542
1543 HRESULT script_parse(script_ctx_t *ctx, const WCHAR *code, const WCHAR *delimiter, BOOL from_eval,
1544         parser_ctx_t **ret)
1545 {
1546     parser_ctx_t *parser_ctx;
1547     heap_pool_t *mark;
1548     HRESULT hres;
1549
1550     const WCHAR html_tagW[] = {'<','/','s','c','r','i','p','t','>',0};
1551
1552     parser_ctx = heap_alloc_zero(sizeof(parser_ctx_t));
1553     if(!parser_ctx)
1554         return E_OUTOFMEMORY;
1555
1556     parser_ctx->hres = JS_E_SYNTAX;
1557     parser_ctx->is_html = delimiter && !strcmpiW(delimiter, html_tagW);
1558
1559     parser_ctx->begin = parser_ctx->ptr = code;
1560     parser_ctx->end = parser_ctx->begin + strlenW(parser_ctx->begin);
1561
1562     script_addref(ctx);
1563     parser_ctx->script = ctx;
1564
1565     mark = heap_pool_mark(&ctx->tmp_heap);
1566     heap_pool_init(&parser_ctx->heap);
1567
1568     parser_parse(parser_ctx);
1569     heap_pool_clear(mark);
1570     hres = parser_ctx->hres;
1571     if(FAILED(hres)) {
1572         WARN("parser failed around %s\n",
1573             debugstr_w(parser_ctx->begin+20 > parser_ctx->ptr ? parser_ctx->begin : parser_ctx->ptr-20));
1574         parser_release(parser_ctx);
1575         return hres;
1576     }
1577
1578     *ret = parser_ctx;
1579     return S_OK;
1580 }