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