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