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