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