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(eq2, 1, 0)                                  \
  46     X(tree, 1, ARG_EXPR)                          \
  47     X(ret, 0, 0)
  48
  49 typedef enum {
  50 #define X(x,a,b) OP_##x,
  51 OP_LIST
  52 #undef X
  53     OP_LAST
  54 } jsop_t;
  55
  56 typedef union {
  57     expression_t *expr;
  58 } instr_arg_t;
  59
  60 typedef enum {
  61     ARG_NONE = 0,
  62     ARG_EXPR
  63 } instr_arg_type_t;
  64
  65 typedef struct {
  66     jsop_t op;
  67     instr_arg_t arg1;
  68 } instr_t;
  69
  70 typedef struct {
  71     instr_t *instrs;
  72 } bytecode_t;
  73
  74 void release_bytecode(bytecode_t*);
  75
  76 typedef struct _compiler_ctx_t compiler_ctx_t;
  77
  78 void release_compiler(compiler_ctx_t*);
  79
  80 typedef struct _parser_ctx_t {
  81     LONG ref;
  82
  83     WCHAR *begin;
  84     const WCHAR *end;
  85     const WCHAR *ptr;
  86
  87     script_ctx_t *script;
  88     source_elements_t *source;
  89     BOOL nl;
  90     BOOL is_html;
  91     BOOL lexer_error;
  92     HRESULT hres;
  93
  94     jsheap_t heap;
  95
  96     func_stack_t *func_stack;
  97
  98     bytecode_t *code;
  99     compiler_ctx_t *compiler;
 100
 101     struct _parser_ctx_t *next;
 102 } parser_ctx_t;
 103
 104 HRESULT script_parse(script_ctx_t*,const WCHAR*,const WCHAR*,parser_ctx_t**) DECLSPEC_HIDDEN;
 105 void parser_release(parser_ctx_t*) DECLSPEC_HIDDEN;
 106
 107 int parser_lex(void*,parser_ctx_t*) DECLSPEC_HIDDEN;
 108
 109 static inline void parser_addref(parser_ctx_t *ctx)
 110 {
 111     ctx->ref++;
 112 }
 113
 114 static inline void *parser_alloc(parser_ctx_t *ctx, DWORD size)
 115 {
 116     return jsheap_alloc(&ctx->heap, size);
 117 }
 118
 119 static inline void *parser_alloc_tmp(parser_ctx_t *ctx, DWORD size)
 120 {
 121     return jsheap_alloc(&ctx->script->tmp_heap, size);
 122 }
 123
 124 typedef struct _scope_chain_t {
 125     LONG ref;
 126     jsdisp_t *obj;
 127     struct _scope_chain_t *next;
 128 } scope_chain_t;
 129
 130 HRESULT scope_push(scope_chain_t*,jsdisp_t*,scope_chain_t**) DECLSPEC_HIDDEN;
 131 void scope_release(scope_chain_t*) DECLSPEC_HIDDEN;
 132
 133 static inline void scope_addref(scope_chain_t *scope)
 134 {
 135     scope->ref++;
 136 }
 137
 138 struct _exec_ctx_t {
 139     LONG ref;
 140
 141     parser_ctx_t *parser;
 142     scope_chain_t *scope_chain;
 143     jsdisp_t *var_disp;
 144     IDispatch *this_obj;
 145     BOOL is_global;
 146
 147     VARIANT *stack;
 148     unsigned stack_size;
 149     unsigned top;
 150
 151     unsigned ip;
 152     jsexcept_t ei;
 153 };
 154
 155 static inline void exec_addref(exec_ctx_t *ctx)
 156 {
 157     ctx->ref++;
 158 }
 159
 160 void exec_release(exec_ctx_t*) DECLSPEC_HIDDEN;
 161 HRESULT create_exec_ctx(script_ctx_t*,IDispatch*,jsdisp_t*,scope_chain_t*,BOOL,exec_ctx_t**) DECLSPEC_HIDDEN;
 162 HRESULT exec_source(exec_ctx_t*,parser_ctx_t*,source_elements_t*,BOOL,jsexcept_t*,VARIANT*) DECLSPEC_HIDDEN;
 163
 164 typedef struct _statement_t statement_t;
 165 typedef struct _parameter_t parameter_t;
 166
 167 HRESULT create_source_function(parser_ctx_t*,parameter_t*,source_elements_t*,scope_chain_t*,
 168         const WCHAR*,DWORD,jsdisp_t**) DECLSPEC_HIDDEN;
 169
 170 typedef enum {
 171     LT_INT,
 172     LT_DOUBLE,
 173     LT_STRING,
 174     LT_BOOL,
 175     LT_NULL,
 176     LT_REGEXP
 177 }literal_type_t;
 178
 179 typedef struct {
 180     literal_type_t type;
 181     union {
 182         LONG lval;
 183         double dval;
 184         const WCHAR *wstr;
 185         VARIANT_BOOL bval;
 186         IDispatch *disp;
 187         struct {
 188             const WCHAR *str;
 189             DWORD str_len;
 190             DWORD flags;
 191         } regexp;
 192     } u;
 193 } literal_t;
 194
 195 literal_t *parse_regexp(parser_ctx_t*) DECLSPEC_HIDDEN;
 196 literal_t *new_boolean_literal(parser_ctx_t*,VARIANT_BOOL) DECLSPEC_HIDDEN;
 197
 198 typedef struct _variable_declaration_t {
 199     const WCHAR *identifier;
 200     expression_t *expr;
 201
 202     struct _variable_declaration_t *next;
 203 } variable_declaration_t;
 204
 205 typedef struct _return_type_t return_type_t;
 206
 207 typedef HRESULT (*statement_eval_t)(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 208
 209 struct _statement_t {
 210     statement_eval_t eval;
 211     statement_t *next;
 212 };
 213
 214 typedef struct {
 215     statement_t stat;
 216     statement_t *stat_list;
 217 } block_statement_t;
 218
 219 typedef struct {
 220     statement_t stat;
 221     variable_declaration_t *variable_list;
 222 } var_statement_t;
 223
 224 typedef struct {
 225     statement_t stat;
 226     expression_t *expr;
 227 } expression_statement_t;
 228
 229 typedef struct {
 230     statement_t stat;
 231     expression_t *expr;
 232     statement_t *if_stat;
 233     statement_t *else_stat;
 234 } if_statement_t;
 235
 236 typedef struct {
 237     statement_t stat;
 238     BOOL do_while;
 239     expression_t *expr;
 240     statement_t *statement;
 241 } while_statement_t;
 242
 243 typedef struct {
 244     statement_t stat;
 245     variable_declaration_t *variable_list;
 246     expression_t *begin_expr;
 247     expression_t *expr;
 248     expression_t *end_expr;
 249     statement_t *statement;
 250 } for_statement_t;
 251
 252 typedef struct {
 253     statement_t stat;
 254     variable_declaration_t *variable;
 255     expression_t *expr;
 256     expression_t *in_expr;
 257     statement_t *statement;
 258 } forin_statement_t;
 259
 260 typedef struct {
 261     statement_t stat;
 262     const WCHAR *identifier;
 263 } branch_statement_t;
 264
 265 typedef struct {
 266     statement_t stat;
 267     expression_t *expr;
 268     statement_t *statement;
 269 } with_statement_t;
 270
 271 typedef struct {
 272     statement_t stat;
 273     const WCHAR *identifier;
 274     statement_t *statement;
 275 } labelled_statement_t;
 276
 277 typedef struct _case_clausule_t {
 278     expression_t *expr;
 279     statement_t *stat;
 280
 281     struct _case_clausule_t *next;
 282 } case_clausule_t;
 283
 284 typedef struct {
 285     statement_t stat;
 286     expression_t *expr;
 287     case_clausule_t *case_list;
 288 } switch_statement_t;
 289
 290 typedef struct {
 291     const WCHAR *identifier;
 292     statement_t *statement;
 293 } catch_block_t;
 294
 295 typedef struct {
 296     statement_t stat;
 297     statement_t *try_statement;
 298     catch_block_t *catch_block;
 299     statement_t *finally_statement;
 300 } try_statement_t;
 301
 302 HRESULT block_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 303 HRESULT var_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 304 HRESULT empty_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 305 HRESULT expression_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 306 HRESULT if_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 307 HRESULT while_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 308 HRESULT for_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 309 HRESULT forin_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 310 HRESULT continue_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 311 HRESULT break_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 312 HRESULT return_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 313 HRESULT with_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 314 HRESULT labelled_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 315 HRESULT switch_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 316 HRESULT throw_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 317 HRESULT try_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*) DECLSPEC_HIDDEN;
 318
 319 typedef struct {
 320     enum {
 321         EXPRVAL_VARIANT,
 322         EXPRVAL_IDREF,
 323         EXPRVAL_NAMEREF,
 324         EXPRVAL_INVALID
 325     } type;
 326     union {
 327         VARIANT var;
 328         struct {
 329             IDispatch *disp;
 330             DISPID id;
 331         } idref;
 332         struct {
 333             IDispatch *disp;
 334             BSTR name;
 335         } nameref;
 336         BSTR identifier;
 337     } u;
 338 } exprval_t;
 339
 340 typedef enum {
 341      EXPR_COMMA,
 342      EXPR_OR,
 343      EXPR_AND,
 344      EXPR_BOR,
 345      EXPR_BXOR,
 346      EXPR_BAND,
 347      EXPR_INSTANCEOF,
 348      EXPR_IN,
 349      EXPR_ADD,
 350      EXPR_SUB,
 351      EXPR_MUL,
 352      EXPR_DIV,
 353      EXPR_MOD,
 354      EXPR_DELETE,
 355      EXPR_VOID,
 356      EXPR_TYPEOF,
 357      EXPR_MINUS,
 358      EXPR_PLUS,
 359      EXPR_POSTINC,
 360      EXPR_POSTDEC,
 361      EXPR_PREINC,
 362      EXPR_PREDEC,
 363      EXPR_EQ,
 364      EXPR_EQEQ,
 365      EXPR_NOTEQ,
 366      EXPR_NOTEQEQ,
 367      EXPR_LESS,
 368      EXPR_LESSEQ,
 369      EXPR_GREATER,
 370      EXPR_GREATEREQ,
 371      EXPR_BITNEG,
 372      EXPR_LOGNEG,
 373      EXPR_LSHIFT,
 374      EXPR_RSHIFT,
 375      EXPR_RRSHIFT,
 376      EXPR_ASSIGN,
 377      EXPR_ASSIGNLSHIFT,
 378      EXPR_ASSIGNRSHIFT,
 379      EXPR_ASSIGNRRSHIFT,
 380      EXPR_ASSIGNADD,
 381      EXPR_ASSIGNSUB,
 382      EXPR_ASSIGNMUL,
 383      EXPR_ASSIGNDIV,
 384      EXPR_ASSIGNMOD,
 385      EXPR_ASSIGNAND,
 386      EXPR_ASSIGNOR,
 387      EXPR_ASSIGNXOR,
 388      EXPR_COND,
 389      EXPR_ARRAY,
 390      EXPR_MEMBER,
 391      EXPR_NEW,
 392      EXPR_CALL,
 393      EXPR_THIS,
 394      EXPR_FUNC,
 395      EXPR_IDENT,
 396      EXPR_ARRAYLIT,
 397      EXPR_PROPVAL,
 398      EXPR_LITERAL
 399 } expression_type_t;
 400
 401 typedef HRESULT (*expression_eval_t)(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 402
 403 struct _expression_t {
 404     expression_type_t type;
 405     expression_eval_t eval;
 406     unsigned instr_off;
 407 };
 408
 409 struct _parameter_t {
 410     const WCHAR *identifier;
 411
 412     struct _parameter_t *next;
 413 };
 414
 415 struct _source_elements_t {
 416     statement_t *statement;
 417     statement_t *statement_tail;
 418     function_declaration_t *functions;
 419     var_list_t *variables;
 420 };
 421
 422 struct _function_expression_t {
 423     expression_t expr;
 424     const WCHAR *identifier;
 425     parameter_t *parameter_list;
 426     source_elements_t *source_elements;
 427     const WCHAR *src_str;
 428     DWORD src_len;
 429 };
 430
 431 typedef struct {
 432     expression_t expr;
 433     expression_t *expression1;
 434     expression_t *expression2;
 435 } binary_expression_t;
 436
 437 typedef struct {
 438     expression_t expr;
 439     expression_t *expression;
 440 } unary_expression_t;
 441
 442 typedef struct {
 443     expression_t expr;
 444     expression_t *expression;
 445     expression_t *true_expression;
 446     expression_t *false_expression;
 447 } conditional_expression_t;
 448
 449 typedef struct {
 450     expression_t expr;
 451     expression_t *member_expr;
 452     expression_t *expression;
 453 } array_expression_t;
 454
 455 typedef struct {
 456     expression_t expr;
 457     expression_t *expression;
 458     const WCHAR *identifier;
 459 } member_expression_t;
 460
 461 typedef struct _argument_t {
 462     expression_t *expr;
 463
 464     struct _argument_t *next;
 465 } argument_t;
 466
 467 typedef struct {
 468     expression_t expr;
 469     expression_t *expression;
 470     argument_t *argument_list;
 471 } call_expression_t;
 472
 473 typedef struct {
 474     expression_t expr;
 475     const WCHAR *identifier;
 476 } identifier_expression_t;
 477
 478 typedef struct {
 479     expression_t expr;
 480     literal_t *literal;
 481 } literal_expression_t;
 482
 483 typedef struct _array_element_t {
 484     int elision;
 485     expression_t *expr;
 486
 487     struct _array_element_t *next;
 488 } array_element_t;
 489
 490 typedef struct {
 491     expression_t expr;
 492     array_element_t *element_list;
 493     int length;
 494 } array_literal_expression_t;
 495
 496 typedef struct _prop_val_t {
 497     literal_t *name;
 498     expression_t *value;
 499
 500     struct _prop_val_t *next;
 501 } prop_val_t;
 502
 503 typedef struct {
 504     expression_t expr;
 505     prop_val_t *property_list;
 506 } property_value_expression_t;
 507
 508 HRESULT function_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 509 HRESULT conditional_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 510 HRESULT array_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 511 HRESULT member_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 512 HRESULT new_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 513 HRESULT call_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 514 HRESULT this_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 515 HRESULT identifier_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 516 HRESULT literal_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 517 HRESULT array_literal_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 518 HRESULT property_value_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 519
 520 HRESULT comma_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 521 HRESULT logical_or_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 522 HRESULT logical_and_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 523 HRESULT binary_or_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 524 HRESULT binary_xor_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 525 HRESULT binary_and_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 526 HRESULT instanceof_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 527 HRESULT in_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 528 HRESULT add_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 529 HRESULT sub_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 530 HRESULT mul_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 531 HRESULT div_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 532 HRESULT mod_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 533 HRESULT delete_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 534 HRESULT void_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 535 HRESULT typeof_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 536 HRESULT minus_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 537 HRESULT plus_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 538 HRESULT post_increment_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 539 HRESULT post_decrement_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 540 HRESULT pre_increment_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 541 HRESULT pre_decrement_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 542 HRESULT equal_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 543 HRESULT not_equal_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 544 HRESULT not_equal2_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 545 HRESULT less_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 546 HRESULT lesseq_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 547 HRESULT greater_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 548 HRESULT greatereq_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 549 HRESULT binary_negation_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 550 HRESULT logical_negation_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 551 HRESULT left_shift_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 552 HRESULT right_shift_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 553 HRESULT right2_shift_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 554 HRESULT assign_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 555 HRESULT assign_lshift_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 556 HRESULT assign_rshift_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 557 HRESULT assign_rrshift_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 558 HRESULT assign_add_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 559 HRESULT assign_sub_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 560 HRESULT assign_mul_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 561 HRESULT assign_div_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 562 HRESULT assign_mod_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 563 HRESULT assign_and_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 564 HRESULT assign_or_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 565 HRESULT assign_xor_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 566
 567 HRESULT compiled_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*) DECLSPEC_HIDDEN;
 568
 569 HRESULT compile_subscript(parser_ctx_t*,expression_t*,unsigned*) DECLSPEC_HIDDEN;