dlls/jscript/engine.h

   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 typedef struct _source_elements_t source_elements_t;
  20 typedef struct _function_expression_t function_expression_t;
  21
  22 typedef struct _obj_literal_t {
  23     DispatchEx *obj;
  24     struct _obj_literal_t *next;
  25 } obj_literal_t;
  26
  27 typedef struct _function_declaration_t {
  28     function_expression_t *expr;
  29
  30     struct _function_declaration_t *next;
  31 } function_declaration_t;
  32
  33 typedef struct _var_list_t {
  34     const WCHAR *identifier;
  35
  36     struct _var_list_t *next;
  37 } var_list_t;
  38
  39 typedef struct _func_stack {
  40     function_declaration_t *func_head;
  41     function_declaration_t *func_tail;
  42     var_list_t *var_head;
  43     var_list_t *var_tail;
  44
  45     struct _func_stack *next;
  46 } func_stack_t;
  47
  48 typedef struct _parser_ctx_t {
  49     LONG ref;
  50
  51     const WCHAR *ptr;
  52     const WCHAR *begin;
  53     const WCHAR *end;
  54
  55     script_ctx_t *script;
  56     source_elements_t *source;
  57     BOOL nl;
  58     BOOL is_html;
  59     BOOL lexer_error;
  60     HRESULT hres;
  61
  62     jsheap_t heap;
  63
  64     obj_literal_t *obj_literals;
  65     func_stack_t *func_stack;
  66
  67     struct _parser_ctx_t *next;
  68 } parser_ctx_t;
  69
  70 HRESULT script_parse(script_ctx_t*,const WCHAR*,const WCHAR*,parser_ctx_t**);
  71 void parser_release(parser_ctx_t*);
  72
  73 int parser_lex(void*,parser_ctx_t*);
  74
  75 static inline void parser_addref(parser_ctx_t *ctx)
  76 {
  77     ctx->ref++;
  78 }
  79
  80 static inline void *parser_alloc(parser_ctx_t *ctx, DWORD size)
  81 {
  82     return jsheap_alloc(&ctx->heap, size);
  83 }
  84
  85 static inline void *parser_alloc_tmp(parser_ctx_t *ctx, DWORD size)
  86 {
  87     return jsheap_alloc(&ctx->script->tmp_heap, size);
  88 }
  89
  90 typedef struct _scope_chain_t {
  91     LONG ref;
  92     DispatchEx *obj;
  93     struct _scope_chain_t *next;
  94 } scope_chain_t;
  95
  96 HRESULT scope_push(scope_chain_t*,DispatchEx*,scope_chain_t**);
  97 void scope_release(scope_chain_t*);
  98
  99 static inline void scope_addref(scope_chain_t *scope)
 100 {
 101     scope->ref++;
 102 }
 103
 104 struct _exec_ctx_t {
 105     LONG ref;
 106
 107     parser_ctx_t *parser;
 108     scope_chain_t *scope_chain;
 109     DispatchEx *var_disp;
 110     IDispatch *this_obj;
 111 };
 112
 113 static inline void exec_addref(exec_ctx_t *ctx)
 114 {
 115     ctx->ref++;
 116 }
 117
 118 void exec_release(exec_ctx_t*);
 119 HRESULT create_exec_ctx(IDispatch*,DispatchEx*,scope_chain_t*,exec_ctx_t**);
 120 HRESULT exec_source(exec_ctx_t*,parser_ctx_t*,source_elements_t*,jsexcept_t*,VARIANT*);
 121
 122 typedef struct _statement_t statement_t;
 123 typedef struct _expression_t expression_t;
 124 typedef struct _parameter_t parameter_t;
 125
 126 HRESULT create_source_function(parser_ctx_t*,parameter_t*,source_elements_t*,scope_chain_t*,
 127         const WCHAR*,DWORD,DispatchEx**);
 128
 129 typedef struct {
 130     VARTYPE vt;
 131     union {
 132         LONG lval;
 133         double dval;
 134         const WCHAR *wstr;
 135         VARIANT_BOOL bval;
 136         IDispatch *disp;
 137     } u;
 138 } literal_t;
 139
 140 literal_t *parse_regexp(parser_ctx_t*);
 141
 142 typedef struct _variable_declaration_t {
 143     const WCHAR *identifier;
 144     expression_t *expr;
 145
 146     struct _variable_declaration_t *next;
 147 } variable_declaration_t;
 148
 149 typedef struct {
 150     enum{
 151         RT_NORMAL,
 152         RT_RETURN,
 153         RT_BREAK,
 154         RT_CONTINUE
 155     } type;
 156     jsexcept_t ei;
 157 } return_type_t;
 158
 159 typedef HRESULT (*statement_eval_t)(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 160
 161 struct _statement_t {
 162     statement_eval_t eval;
 163     statement_t *next;
 164 };
 165
 166 typedef struct {
 167     statement_t stat;
 168     statement_t *stat_list;
 169 } block_statement_t;
 170
 171 typedef struct {
 172     statement_t stat;
 173     variable_declaration_t *variable_list;
 174 } var_statement_t;
 175
 176 typedef struct {
 177     statement_t stat;
 178     expression_t *expr;
 179 } expression_statement_t;
 180
 181 typedef struct {
 182     statement_t stat;
 183     expression_t *expr;
 184     statement_t *if_stat;
 185     statement_t *else_stat;
 186 } if_statement_t;
 187
 188 typedef struct {
 189     statement_t stat;
 190     BOOL do_while;
 191     expression_t *expr;
 192     statement_t *statement;
 193 } while_statement_t;
 194
 195 typedef struct {
 196     statement_t stat;
 197     variable_declaration_t *variable_list;
 198     expression_t *begin_expr;
 199     expression_t *expr;
 200     expression_t *end_expr;
 201     statement_t *statement;
 202 } for_statement_t;
 203
 204 typedef struct {
 205     statement_t stat;
 206     variable_declaration_t *variable;
 207     expression_t *expr;
 208     expression_t *in_expr;
 209     statement_t *statement;
 210 } forin_statement_t;
 211
 212 typedef struct {
 213     statement_t stat;
 214     const WCHAR *identifier;
 215 } branch_statement_t;
 216
 217 typedef struct {
 218     statement_t stat;
 219     expression_t *expr;
 220     statement_t *statement;
 221 } with_statement_t;
 222
 223 typedef struct {
 224     statement_t stat;
 225     const WCHAR *identifier;
 226     statement_t *statement;
 227 } labelled_statement_t;
 228
 229 typedef struct _case_clausule_t {
 230     expression_t *expr;
 231     statement_t *stat;
 232
 233     struct _case_clausule_t *next;
 234 } case_clausule_t;
 235
 236 typedef struct {
 237     statement_t stat;
 238     expression_t *expr;
 239     case_clausule_t *case_list;
 240 } switch_statement_t;
 241
 242 typedef struct {
 243     const WCHAR *identifier;
 244     statement_t *statement;
 245 } catch_block_t;
 246
 247 typedef struct {
 248     statement_t stat;
 249     statement_t *try_statement;
 250     catch_block_t *catch_block;
 251     statement_t *finally_statement;
 252 } try_statement_t;
 253
 254 HRESULT block_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 255 HRESULT var_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 256 HRESULT empty_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 257 HRESULT expression_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 258 HRESULT if_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 259 HRESULT while_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 260 HRESULT for_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 261 HRESULT forin_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 262 HRESULT continue_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 263 HRESULT break_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 264 HRESULT return_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 265 HRESULT with_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 266 HRESULT labelled_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 267 HRESULT switch_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 268 HRESULT throw_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 269 HRESULT try_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 270
 271 typedef struct {
 272     enum {
 273         EXPRVAL_VARIANT,
 274         EXPRVAL_IDREF,
 275         EXPRVAL_NAMEREF
 276     } type;
 277     union {
 278         VARIANT var;
 279         struct {
 280             IDispatch *disp;
 281             DISPID id;
 282         } idref;
 283         struct {
 284             IDispatch *disp;
 285             BSTR name;
 286         } nameref;
 287     } u;
 288 } exprval_t;
 289
 290 typedef HRESULT (*expression_eval_t)(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 291
 292 struct _expression_t {
 293     expression_eval_t eval;
 294 };
 295
 296 struct _parameter_t {
 297     const WCHAR *identifier;
 298
 299     struct _parameter_t *next;
 300 };
 301
 302 struct _source_elements_t {
 303     statement_t *statement;
 304     statement_t *statement_tail;
 305     function_declaration_t *functions;
 306     var_list_t *variables;
 307 };
 308
 309 struct _function_expression_t {
 310     expression_t expr;
 311     const WCHAR *identifier;
 312     parameter_t *parameter_list;
 313     source_elements_t *source_elements;
 314     const WCHAR *src_str;
 315     DWORD src_len;
 316 };
 317
 318 typedef struct {
 319     expression_t expr;
 320     expression_t *expression1;
 321     expression_t *expression2;
 322 } binary_expression_t;
 323
 324 typedef struct {
 325     expression_t expr;
 326     expression_t *expression;
 327 } unary_expression_t;
 328
 329 typedef struct {
 330     expression_t expr;
 331     expression_t *expression;
 332     expression_t *true_expression;
 333     expression_t *false_expression;
 334 } conditional_expression_t;
 335
 336 typedef struct {
 337     expression_t expr;
 338     expression_t *member_expr;
 339     expression_t *expression;
 340 } array_expression_t;
 341
 342 typedef struct {
 343     expression_t expr;
 344     expression_t *expression;
 345     const WCHAR *identifier;
 346 } member_expression_t;
 347
 348 typedef struct _argument_t {
 349     expression_t *expr;
 350
 351     struct _argument_t *next;
 352 } argument_t;
 353
 354 typedef struct {
 355     expression_t expr;
 356     expression_t *expression;
 357     argument_t *argument_list;
 358 } call_expression_t;
 359
 360 typedef struct {
 361     expression_t expr;
 362     const WCHAR *identifier;
 363 } identifier_expression_t;
 364
 365 typedef struct {
 366     expression_t expr;
 367     literal_t *literal;
 368 } literal_expression_t;
 369
 370 typedef struct _array_element_t {
 371     int elision;
 372     expression_t *expr;
 373
 374     struct _array_element_t *next;
 375 } array_element_t;
 376
 377 typedef struct {
 378     expression_t expr;
 379     array_element_t *element_list;
 380     int length;
 381 } array_literal_expression_t;
 382
 383 typedef struct _prop_val_t {
 384     literal_t *name;
 385     expression_t *value;
 386
 387     struct _prop_val_t *next;
 388 } prop_val_t;
 389
 390 typedef struct {
 391     expression_t expr;
 392     prop_val_t *property_list;
 393 } property_value_expression_t;
 394
 395 typedef enum {
 396      EXPR_COMMA,
 397      EXPR_OR,
 398      EXPR_AND,
 399      EXPR_BOR,
 400      EXPR_BXOR,
 401      EXPR_BAND,
 402      EXPR_INSTANCEOF,
 403      EXPR_IN,
 404      EXPR_ADD,
 405      EXPR_SUB,
 406      EXPR_MUL,
 407      EXPR_DIV,
 408      EXPR_MOD,
 409      EXPR_DELETE,
 410      EXPR_VOID,
 411      EXPR_TYPEOF,
 412      EXPR_MINUS,
 413      EXPR_PLUS,
 414      EXPR_POSTINC,
 415      EXPR_POSTDEC,
 416      EXPR_PREINC,
 417      EXPR_PREDEC,
 418      EXPR_EQ,
 419      EXPR_EQEQ,
 420      EXPR_NOTEQ,
 421      EXPR_NOTEQEQ,
 422      EXPR_LESS,
 423      EXPR_LESSEQ,
 424      EXPR_GREATER,
 425      EXPR_GREATEREQ,
 426      EXPR_BITNEG,
 427      EXPR_LOGNEG,
 428      EXPR_LSHIFT,
 429      EXPR_RSHIFT,
 430      EXPR_RRSHIFT,
 431      EXPR_ASSIGN,
 432      EXPR_ASSIGNLSHIFT,
 433      EXPR_ASSIGNRSHIFT,
 434      EXPR_ASSIGNRRSHIFT,
 435      EXPR_ASSIGNADD,
 436      EXPR_ASSIGNSUB,
 437      EXPR_ASSIGNMUL,
 438      EXPR_ASSIGNDIV,
 439      EXPR_ASSIGNMOD,
 440      EXPR_ASSIGNAND,
 441      EXPR_ASSIGNOR,
 442      EXPR_ASSIGNXOR
 443 } expression_type_t;
 444
 445 HRESULT function_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 446 HRESULT conditional_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 447 HRESULT array_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 448 HRESULT member_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 449 HRESULT new_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 450 HRESULT call_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 451 HRESULT this_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 452 HRESULT identifier_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 453 HRESULT literal_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 454 HRESULT array_literal_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 455 HRESULT property_value_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 456
 457 HRESULT comma_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 458 HRESULT logical_or_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 459 HRESULT logical_and_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 460 HRESULT binary_or_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 461 HRESULT binary_xor_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 462 HRESULT binary_and_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 463 HRESULT instanceof_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 464 HRESULT in_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 465 HRESULT add_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 466 HRESULT sub_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 467 HRESULT mul_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 468 HRESULT div_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 469 HRESULT mod_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 470 HRESULT delete_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 471 HRESULT void_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 472 HRESULT typeof_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 473 HRESULT minus_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 474 HRESULT plus_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 475 HRESULT post_increment_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 476 HRESULT post_decrement_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 477 HRESULT pre_increment_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 478 HRESULT pre_decrement_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 479 HRESULT equal_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 480 HRESULT equal2_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 481 HRESULT not_equal_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 482 HRESULT not_equal2_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 483 HRESULT less_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 484 HRESULT lesseq_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 485 HRESULT greater_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 486 HRESULT greatereq_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 487 HRESULT binary_negation_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 488 HRESULT logical_negation_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 489 HRESULT left_shift_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 490 HRESULT right_shift_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 491 HRESULT right2_shift_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 492 HRESULT assign_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 493 HRESULT assign_lshift_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 494 HRESULT assign_rshift_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 495 HRESULT assign_rrshift_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 496 HRESULT assign_add_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 497 HRESULT assign_sub_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 498 HRESULT assign_mul_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 499 HRESULT assign_div_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 500 HRESULT assign_mod_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 501 HRESULT assign_and_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 502 HRESULT assign_or_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 503 HRESULT assign_xor_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);