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