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 typedef struct _expression_t expression_t;
  22
  23 typedef struct _function_declaration_t {
  24     function_expression_t *expr;
  25
  26     struct _function_declaration_t *next;
  27 } function_declaration_t;
  28
  29 typedef struct _var_list_t {
  30     const WCHAR *identifier;
  31
  32     struct _var_list_t *next;
  33 } var_list_t;
  34
  35 typedef struct _func_stack {
  36     function_declaration_t *func_head;
  37     function_declaration_t *func_tail;
  38     var_list_t *var_head;
  39     var_list_t *var_tail;
  40
  41     struct _func_stack *next;
  42 } func_stack_t;
  43
  44 #define OP_LIST                            \
  45     X(add,        1, 0,0)                  \
  46     X(bool,       1, ARG_INT,    0)        \
  47     X(bneg,       1, 0,0)                  \
  48     X(double,     1, ARG_SBL,    0)        \
  49     X(eq2,        1, 0,0)                  \
  50     X(in,         1, 0,0)                  \
  51     X(int,        1, ARG_INT,    0)        \
  52     X(neg,        1, 0,0)                  \
  53     X(neq2,       1, 0,0)                  \
  54     X(null,       1, 0,0)                  \
  55     X(pop,        1, 0,0)                  \
  56     X(regexp,     1, ARG_STR,    ARG_INT)  \
  57     X(str,        1, ARG_STR,    0)        \
  58     X(this,       1, 0,0)                  \
  59     X(tonum,      1, 0,0)                  \
  60     X(tree,       1, ARG_EXPR,   0)        \
  61     X(ret,        0, 0,0)                  \
  62     X(sub,        1, 0,0)                  \
  63     X(void,       1, 0,0)
  64
  65 typedef enum {
  66 #define X(x,a,b,c) OP_##x,
  67 OP_LIST
  68 #undef X
  69     OP_LAST
  70 } jsop_t;
  71
  72 typedef union {
  73     expression_t *expr;
  74     double *dbl;
  75     LONG lng;
  76     WCHAR *str;
  77 } instr_arg_t;
  78
  79 typedef enum {
  80     ARG_NONE = 0,
  81     ARG_EXPR,
  82     ARG_INT
  83 } instr_arg_type_t;
  84
  85 typedef struct {
  86     jsop_t op;
  87     instr_arg_t arg1;
  88     instr_arg_t arg2;
  89 } instr_t;
  90
  91 typedef struct {
  92     instr_t *instrs;
  93     jsheap_t heap;
  94 } bytecode_t;
  95
  96 void release_bytecode(bytecode_t*);
  97
  98 typedef struct _compiler_ctx_t compiler_ctx_t;
  99
 100 void release_compiler(compiler_ctx_t*);
 101
 102 typedef struct _parser_ctx_t {
 103     LONG ref;
 104
 105     WCHAR *begin;
 106     const WCHAR *end;
 107     const WCHAR *ptr;
 108
 109     script_ctx_t *script;
 110     source_elements_t *source;
 111     BOOL nl;
 112     BOOL is_html;
 113     BOOL lexer_error;
 114     HRESULT hres;
 115
 116     jsheap_t heap;
 117
 118     func_stack_t *func_stack;
 119
 120     bytecode_t *code;
 121     compiler_ctx_t *compiler;
 122
 123     struct _parser_ctx_t *next;
 124 } parser_ctx_t;
 125
 126 HRESULT script_parse(script_ctx_t*,const WCHAR*,const WCHAR*,parser_ctx_t**) DECLSPEC_HIDDEN;
 127 void parser_release(parser_ctx_t*) DECLSPEC_HIDDEN;
 128
 129 int parser_lex(void*,parser_ctx_t*) DECLSPEC_HIDDEN;
 130
 131 static inline void parser_addref(parser_ctx_t *ctx)
 132 {
 133     ctx->ref++;
 134 }
 135
 136 static inline void *parser_alloc(parser_ctx_t *ctx, DWORD size)
 137 {
 138     return jsheap_alloc(&ctx->heap, size);
 139 }
 140
 141 static inline void *parser_alloc_tmp(parser_ctx_t *ctx, DWORD size)
 142 {
 143     return jsheap_alloc(&ctx->script->tmp_heap, size);
 144 }
 145
 146 typedef struct _scope_chain_t {
 147     LONG ref;
 148     jsdisp_t *obj;
 149     struct _scope_chain_t *next;
 150 } scope_chain_t;
 151
 152 HRESULT scope_push(scope_chain_t*,jsdisp_t*,scope_chain_t**) DECLSPEC_HIDDEN;
 153 void scope_release(scope_chain_t*) DECLSPEC_HIDDEN;
 154
 155 static inline void scope_addref(scope_chain_t *scope)
 156 {
 157     scope->ref++;
 158 }
 159
 160 struct _exec_ctx_t {
 161     LONG ref;
 162
 163     parser_ctx_t *parser;
 164     scope_chain_t *scope_chain;
 165     jsdisp_t *var_disp;
 166     IDispatch *this_obj;
 167     BOOL is_global;
 168
 169     VARIANT *stack;
 170     unsigned stack_size;
 171     unsigned top;
 172
 173     unsigned ip;
 174     jsexcept_t ei;
 175 };
 176
 177 static inline void exec_addref(exec_ctx_t *ctx)
 178 {
 179     ctx->ref++;
 180 }
 181
 182 void exec_release(exec_ctx_t*) DECLSPEC_HIDDEN;
 183 HRESULT create_exec_ctx(script_ctx_t*,IDispatch*,jsdisp_t*,scope_chain_t*,BOOL,exec_ctx_t**) DECLSPEC_HIDDEN;
 184 HRESULT exec_source(exec_ctx_t*,parser_ctx_t*,source_elements_t*,BOOL,jsexcept_t*,VARIANT*) DECLSPEC_HIDDEN;
 185
 186 typedef struct _statement_t statement_t;
 187 typedef struct _parameter_t parameter_t;
 188
 189 HRESULT create_source_function(parser_ctx_t*,parameter_t*,source_elements_t*,scope_chain_t*,
 190         const WCHAR*,DWORD,jsdisp_t**) DECLSPEC_HIDDEN;
 191
 192 typedef enum {
 193     LT_INT,
 194     LT_DOUBLE,
 195     LT_STRING,
 196     LT_BOOL,
 197     LT_NULL,
 198     LT_REGEXP
 199 }literal_type_t;
 200
 201 typedef struct {
 202     literal_type_t type;
 203     union {
 204         LONG lval;
 205         double dval;
 206         const WCHAR *wstr;
 207         VARIANT_BOOL bval;
 208         struct {
 209             const WCHAR *str;
 210             DWORD str_len;
 211             DWORD flags;
 212         } regexp;
 213     } u;
 214 } literal_t;
 215
 216 literal_t *parse_regexp(parser_ctx_t*) DECLSPEC_HIDDEN;
 217 literal_t *new_boolean_literal(parser_ctx_t*,VARIANT_BOOL) DECLSPEC_HIDDEN;
 218
 219 typedef struct _variable_declaration_t {
 220     const WCHAR *identifier;
 221     expression_t *expr;
 222
 223     struct _variable_declaration_t *next;
 224 } variable_declaration_t;
 225
 226 typedef struct _return_type_t return_type_t;
 227
 228 typedef HRESULT (*statement_eval_t)(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 229
 230 struct _statement_t {
 231     statement_eval_t eval;
 232     statement_t *next;
 233 };
 234
 235 typedef struct {
 236     statement_t stat;
 237     statement_t *stat_list;
 238 } block_statement_t;
 239
 240 typedef struct {
 241     statement_t stat;
 242     variable_declaration_t *variable_list;
 243 } var_statement_t;
 244
 245 typedef struct {
 246     statement_t stat;
 247     expression_t *expr;
 248 } expression_statement_t;
 249
 250 typedef struct {
 251     statement_t stat;
 252     expression_t *expr;
 253     statement_t *if_stat;
 254     statement_t *else_stat;
 255 } if_statement_t;
 256
 257 typedef struct {
 258     statement_t stat;
 259     BOOL do_while;
 260     expression_t *expr;
 261     statement_t *statement;
 262 } while_statement_t;
 263
 264 typedef struct {
 265     statement_t stat;
 266     variable_declaration_t *variable_list;
 267     expression_t *begin_expr;
 268     expression_t *expr;
 269     expression_t *end_expr;
 270     statement_t *statement;
 271 } for_statement_t;
 272
 273 typedef struct {
 274     statement_t stat;
 275     variable_declaration_t *variable;
 276     expression_t *expr;
 277     expression_t *in_expr;
 278     statement_t *statement;
 279 } forin_statement_t;
 280
 281 typedef struct {
 282     statement_t stat;
 283     const WCHAR *identifier;
 284 } branch_statement_t;
 285
 286 typedef struct {
 287     statement_t stat;
 288     expression_t *expr;
 289     statement_t *statement;
 290 } with_statement_t;
 291
 292 typedef struct {
 293     statement_t stat;
 294     const WCHAR *identifier;
 295     statement_t *statement;
 296 } labelled_statement_t;
 297
 298 typedef struct _case_clausule_t {
 299     expression_t *expr;
 300     statement_t *stat;
 301
 302     struct _case_clausule_t *next;
 303 } case_clausule_t;
 304
 305 typedef struct {
 306     statement_t stat;
 307     expression_t *expr;
 308     case_clausule_t *case_list;
 309 } switch_statement_t;
 310
 311 typedef struct {
 312     const WCHAR *identifier;
 313     statement_t *statement;
 314 } catch_block_t;
 315
 316 typedef struct {
 317     statement_t stat;
 318     statement_t *try_statement;
 319     catch_block_t *catch_block;
 320     statement_t *finally_statement;
 321 } try_statement_t;
 322
 323 HRESULT block_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 324 HRESULT var_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 325 HRESULT empty_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 326 HRESULT expression_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 327 HRESULT if_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 328 HRESULT while_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 329 HRESULT for_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 330 HRESULT forin_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 331 HRESULT continue_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 332 HRESULT break_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 333 HRESULT return_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 334 HRESULT with_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 335 HRESULT labelled_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 336 HRESULT switch_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 337 HRESULT throw_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 338 HRESULT try_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 339
 340 typedef struct {
 341     enum {
 342         EXPRVAL_VARIANT,
 343         EXPRVAL_IDREF,
 344         EXPRVAL_NAMEREF,
 345         EXPRVAL_INVALID
 346     } type;
 347     union {
 348         VARIANT var;
 349         struct {
 350             IDispatch *disp;
 351             DISPID id;
 352         } idref;
 353         struct {
 354             IDispatch *disp;
 355             BSTR name;
 356         } nameref;
 357         BSTR identifier;
 358     } u;
 359 } exprval_t;
 360
 361 typedef enum {
 362      EXPR_COMMA,
 363      EXPR_OR,
 364      EXPR_AND,
 365      EXPR_BOR,
 366      EXPR_BXOR,
 367      EXPR_BAND,
 368      EXPR_INSTANCEOF,
 369      EXPR_IN,
 370      EXPR_ADD,
 371      EXPR_SUB,
 372      EXPR_MUL,
 373      EXPR_DIV,
 374      EXPR_MOD,
 375      EXPR_DELETE,
 376      EXPR_VOID,
 377      EXPR_TYPEOF,
 378      EXPR_MINUS,
 379      EXPR_PLUS,
 380      EXPR_POSTINC,
 381      EXPR_POSTDEC,
 382      EXPR_PREINC,
 383      EXPR_PREDEC,
 384      EXPR_EQ,
 385      EXPR_EQEQ,
 386      EXPR_NOTEQ,
 387      EXPR_NOTEQEQ,
 388      EXPR_LESS,
 389      EXPR_LESSEQ,
 390      EXPR_GREATER,
 391      EXPR_GREATEREQ,
 392      EXPR_BITNEG,
 393      EXPR_LOGNEG,
 394      EXPR_LSHIFT,
 395      EXPR_RSHIFT,
 396      EXPR_RRSHIFT,
 397      EXPR_ASSIGN,
 398      EXPR_ASSIGNLSHIFT,
 399      EXPR_ASSIGNRSHIFT,
 400      EXPR_ASSIGNRRSHIFT,
 401      EXPR_ASSIGNADD,
 402      EXPR_ASSIGNSUB,
 403      EXPR_ASSIGNMUL,
 404      EXPR_ASSIGNDIV,
 405      EXPR_ASSIGNMOD,
 406      EXPR_ASSIGNAND,
 407      EXPR_ASSIGNOR,
 408      EXPR_ASSIGNXOR,
 409      EXPR_COND,
 410      EXPR_ARRAY,
 411      EXPR_MEMBER,
 412      EXPR_NEW,
 413      EXPR_CALL,
 414      EXPR_THIS,
 415      EXPR_FUNC,
 416      EXPR_IDENT,
 417      EXPR_ARRAYLIT,
 418      EXPR_PROPVAL,
 419      EXPR_LITERAL
 420 } expression_type_t;
 421
 422 typedef HRESULT (*expression_eval_t)(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 423
 424 struct _expression_t {
 425     expression_type_t type;
 426     expression_eval_t eval;
 427     unsigned instr_off;
 428 };
 429
 430 struct _parameter_t {
 431     const WCHAR *identifier;
 432
 433     struct _parameter_t *next;
 434 };
 435
 436 struct _source_elements_t {
 437     statement_t *statement;
 438     statement_t *statement_tail;
 439     function_declaration_t *functions;
 440     var_list_t *variables;
 441 };
 442
 443 struct _function_expression_t {
 444     expression_t expr;
 445     const WCHAR *identifier;
 446     parameter_t *parameter_list;
 447     source_elements_t *source_elements;
 448     const WCHAR *src_str;
 449     DWORD src_len;
 450 };
 451
 452 typedef struct {
 453     expression_t expr;
 454     expression_t *expression1;
 455     expression_t *expression2;
 456 } binary_expression_t;
 457
 458 typedef struct {
 459     expression_t expr;
 460     expression_t *expression;
 461 } unary_expression_t;
 462
 463 typedef struct {
 464     expression_t expr;
 465     expression_t *expression;
 466     expression_t *true_expression;
 467     expression_t *false_expression;
 468 } conditional_expression_t;
 469
 470 typedef struct {
 471     expression_t expr;
 472     expression_t *member_expr;
 473     expression_t *expression;
 474 } array_expression_t;
 475
 476 typedef struct {
 477     expression_t expr;
 478     expression_t *expression;
 479     const WCHAR *identifier;
 480 } member_expression_t;
 481
 482 typedef struct _argument_t {
 483     expression_t *expr;
 484
 485     struct _argument_t *next;
 486 } argument_t;
 487
 488 typedef struct {
 489     expression_t expr;
 490     expression_t *expression;
 491     argument_t *argument_list;
 492 } call_expression_t;
 493
 494 typedef struct {
 495     expression_t expr;
 496     const WCHAR *identifier;
 497 } identifier_expression_t;
 498
 499 typedef struct {
 500     expression_t expr;
 501     literal_t *literal;
 502 } literal_expression_t;
 503
 504 typedef struct _array_element_t {
 505     int elision;
 506     expression_t *expr;
 507
 508     struct _array_element_t *next;
 509 } array_element_t;
 510
 511 typedef struct {
 512     expression_t expr;
 513     array_element_t *element_list;
 514     int length;
 515 } array_literal_expression_t;
 516
 517 typedef struct _prop_val_t {
 518     literal_t *name;
 519     expression_t *value;
 520
 521     struct _prop_val_t *next;
 522 } prop_val_t;
 523
 524 typedef struct {
 525     expression_t expr;
 526     prop_val_t *property_list;
 527 } property_value_expression_t;
 528
 529 HRESULT function_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 530 HRESULT conditional_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 531 HRESULT array_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 532 HRESULT member_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 533 HRESULT new_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 534 HRESULT call_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 535 HRESULT identifier_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 536 HRESULT array_literal_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 537 HRESULT property_value_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 538
 539 HRESULT logical_or_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 540 HRESULT logical_and_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 541 HRESULT binary_or_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 542 HRESULT binary_xor_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 543 HRESULT binary_and_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 544 HRESULT instanceof_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 545 HRESULT mul_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 546 HRESULT div_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 547 HRESULT mod_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 548 HRESULT delete_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 549 HRESULT typeof_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 550 HRESULT minus_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 551 HRESULT post_increment_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 552 HRESULT post_decrement_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 553 HRESULT pre_increment_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 554 HRESULT pre_decrement_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 555 HRESULT equal_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 556 HRESULT not_equal_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 557 HRESULT less_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 558 HRESULT lesseq_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 559 HRESULT greater_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 560 HRESULT greatereq_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 561 HRESULT left_shift_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 562 HRESULT right_shift_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 563 HRESULT right2_shift_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 564 HRESULT assign_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 565 HRESULT assign_lshift_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 566 HRESULT assign_rshift_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 567 HRESULT assign_rrshift_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 568 HRESULT assign_add_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 569 HRESULT assign_sub_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 570 HRESULT assign_mul_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 571 HRESULT assign_div_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 572 HRESULT assign_mod_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 573 HRESULT assign_and_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 574 HRESULT assign_or_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 575 HRESULT assign_xor_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 576
 577 HRESULT compiled_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 578
 579 HRESULT compile_subscript(parser_ctx_t*,expression_t*,unsigned*) DECLSPEC_HIDDEN;