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**);
  65 void parser_release(parser_ctx_t*);
  66
  67 int parser_lex(void*,parser_ctx_t*);
  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**);
  91 void scope_release(scope_chain_t*);
  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*);
 114 HRESULT create_exec_ctx(script_ctx_t*,IDispatch*,jsdisp_t*,scope_chain_t*,BOOL,exec_ctx_t**);
 115 HRESULT exec_source(exec_ctx_t*,parser_ctx_t*,source_elements_t*,BOOL,jsexcept_t*,VARIANT*);
 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**);
 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*);
 150
 151 typedef struct _variable_declaration_t {
 152     const WCHAR *identifier;
 153     expression_t *expr;
 154
 155     struct _variable_declaration_t *next;
 156 } variable_declaration_t;
 157
 158 typedef struct {
 159     enum{
 160         RT_NORMAL,
 161         RT_RETURN,
 162         RT_BREAK,
 163         RT_CONTINUE
 164     } type;
 165     jsexcept_t ei;
 166 } return_type_t;
 167
 168 typedef HRESULT (*statement_eval_t)(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 169
 170 struct _statement_t {
 171     statement_eval_t eval;
 172     statement_t *next;
 173 };
 174
 175 typedef struct {
 176     statement_t stat;
 177     statement_t *stat_list;
 178 } block_statement_t;
 179
 180 typedef struct {
 181     statement_t stat;
 182     variable_declaration_t *variable_list;
 183 } var_statement_t;
 184
 185 typedef struct {
 186     statement_t stat;
 187     expression_t *expr;
 188 } expression_statement_t;
 189
 190 typedef struct {
 191     statement_t stat;
 192     expression_t *expr;
 193     statement_t *if_stat;
 194     statement_t *else_stat;
 195 } if_statement_t;
 196
 197 typedef struct {
 198     statement_t stat;
 199     BOOL do_while;
 200     expression_t *expr;
 201     statement_t *statement;
 202 } while_statement_t;
 203
 204 typedef struct {
 205     statement_t stat;
 206     variable_declaration_t *variable_list;
 207     expression_t *begin_expr;
 208     expression_t *expr;
 209     expression_t *end_expr;
 210     statement_t *statement;
 211 } for_statement_t;
 212
 213 typedef struct {
 214     statement_t stat;
 215     variable_declaration_t *variable;
 216     expression_t *expr;
 217     expression_t *in_expr;
 218     statement_t *statement;
 219 } forin_statement_t;
 220
 221 typedef struct {
 222     statement_t stat;
 223     const WCHAR *identifier;
 224 } branch_statement_t;
 225
 226 typedef struct {
 227     statement_t stat;
 228     expression_t *expr;
 229     statement_t *statement;
 230 } with_statement_t;
 231
 232 typedef struct {
 233     statement_t stat;
 234     const WCHAR *identifier;
 235     statement_t *statement;
 236 } labelled_statement_t;
 237
 238 typedef struct _case_clausule_t {
 239     expression_t *expr;
 240     statement_t *stat;
 241
 242     struct _case_clausule_t *next;
 243 } case_clausule_t;
 244
 245 typedef struct {
 246     statement_t stat;
 247     expression_t *expr;
 248     case_clausule_t *case_list;
 249 } switch_statement_t;
 250
 251 typedef struct {
 252     const WCHAR *identifier;
 253     statement_t *statement;
 254 } catch_block_t;
 255
 256 typedef struct {
 257     statement_t stat;
 258     statement_t *try_statement;
 259     catch_block_t *catch_block;
 260     statement_t *finally_statement;
 261 } try_statement_t;
 262
 263 HRESULT block_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 264 HRESULT var_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 265 HRESULT empty_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 266 HRESULT expression_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 267 HRESULT if_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 268 HRESULT while_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 269 HRESULT for_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 270 HRESULT forin_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 271 HRESULT continue_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 272 HRESULT break_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 273 HRESULT return_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 274 HRESULT with_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 275 HRESULT labelled_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 276 HRESULT switch_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 277 HRESULT throw_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 278 HRESULT try_statement_eval(script_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 279
 280 typedef struct {
 281     enum {
 282         EXPRVAL_VARIANT,
 283         EXPRVAL_IDREF,
 284         EXPRVAL_NAMEREF,
 285         EXPRVAL_INVALID
 286     } type;
 287     union {
 288         VARIANT var;
 289         struct {
 290             IDispatch *disp;
 291             DISPID id;
 292         } idref;
 293         struct {
 294             IDispatch *disp;
 295             BSTR name;
 296         } nameref;
 297         BSTR identifier;
 298     } u;
 299 } exprval_t;
 300
 301 typedef HRESULT (*expression_eval_t)(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 302
 303 struct _expression_t {
 304     expression_eval_t eval;
 305 };
 306
 307 struct _parameter_t {
 308     const WCHAR *identifier;
 309
 310     struct _parameter_t *next;
 311 };
 312
 313 struct _source_elements_t {
 314     statement_t *statement;
 315     statement_t *statement_tail;
 316     function_declaration_t *functions;
 317     var_list_t *variables;
 318 };
 319
 320 struct _function_expression_t {
 321     expression_t expr;
 322     const WCHAR *identifier;
 323     parameter_t *parameter_list;
 324     source_elements_t *source_elements;
 325     const WCHAR *src_str;
 326     DWORD src_len;
 327 };
 328
 329 typedef struct {
 330     expression_t expr;
 331     expression_t *expression1;
 332     expression_t *expression2;
 333 } binary_expression_t;
 334
 335 typedef struct {
 336     expression_t expr;
 337     expression_t *expression;
 338 } unary_expression_t;
 339
 340 typedef struct {
 341     expression_t expr;
 342     expression_t *expression;
 343     expression_t *true_expression;
 344     expression_t *false_expression;
 345 } conditional_expression_t;
 346
 347 typedef struct {
 348     expression_t expr;
 349     expression_t *member_expr;
 350     expression_t *expression;
 351 } array_expression_t;
 352
 353 typedef struct {
 354     expression_t expr;
 355     expression_t *expression;
 356     const WCHAR *identifier;
 357 } member_expression_t;
 358
 359 typedef struct _argument_t {
 360     expression_t *expr;
 361
 362     struct _argument_t *next;
 363 } argument_t;
 364
 365 typedef struct {
 366     expression_t expr;
 367     expression_t *expression;
 368     argument_t *argument_list;
 369 } call_expression_t;
 370
 371 typedef struct {
 372     expression_t expr;
 373     const WCHAR *identifier;
 374 } identifier_expression_t;
 375
 376 typedef struct {
 377     expression_t expr;
 378     literal_t *literal;
 379 } literal_expression_t;
 380
 381 typedef struct _array_element_t {
 382     int elision;
 383     expression_t *expr;
 384
 385     struct _array_element_t *next;
 386 } array_element_t;
 387
 388 typedef struct {
 389     expression_t expr;
 390     array_element_t *element_list;
 391     int length;
 392 } array_literal_expression_t;
 393
 394 typedef struct _prop_val_t {
 395     literal_t *name;
 396     expression_t *value;
 397
 398     struct _prop_val_t *next;
 399 } prop_val_t;
 400
 401 typedef struct {
 402     expression_t expr;
 403     prop_val_t *property_list;
 404 } property_value_expression_t;
 405
 406 typedef enum {
 407      EXPR_COMMA,
 408      EXPR_OR,
 409      EXPR_AND,
 410      EXPR_BOR,
 411      EXPR_BXOR,
 412      EXPR_BAND,
 413      EXPR_INSTANCEOF,
 414      EXPR_IN,
 415      EXPR_ADD,
 416      EXPR_SUB,
 417      EXPR_MUL,
 418      EXPR_DIV,
 419      EXPR_MOD,
 420      EXPR_DELETE,
 421      EXPR_VOID,
 422      EXPR_TYPEOF,
 423      EXPR_MINUS,
 424      EXPR_PLUS,
 425      EXPR_POSTINC,
 426      EXPR_POSTDEC,
 427      EXPR_PREINC,
 428      EXPR_PREDEC,
 429      EXPR_EQ,
 430      EXPR_EQEQ,
 431      EXPR_NOTEQ,
 432      EXPR_NOTEQEQ,
 433      EXPR_LESS,
 434      EXPR_LESSEQ,
 435      EXPR_GREATER,
 436      EXPR_GREATEREQ,
 437      EXPR_BITNEG,
 438      EXPR_LOGNEG,
 439      EXPR_LSHIFT,
 440      EXPR_RSHIFT,
 441      EXPR_RRSHIFT,
 442      EXPR_ASSIGN,
 443      EXPR_ASSIGNLSHIFT,
 444      EXPR_ASSIGNRSHIFT,
 445      EXPR_ASSIGNRRSHIFT,
 446      EXPR_ASSIGNADD,
 447      EXPR_ASSIGNSUB,
 448      EXPR_ASSIGNMUL,
 449      EXPR_ASSIGNDIV,
 450      EXPR_ASSIGNMOD,
 451      EXPR_ASSIGNAND,
 452      EXPR_ASSIGNOR,
 453      EXPR_ASSIGNXOR
 454 } expression_type_t;
 455
 456 HRESULT function_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 457 HRESULT conditional_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 458 HRESULT array_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 459 HRESULT member_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 460 HRESULT new_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 461 HRESULT call_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 462 HRESULT this_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 463 HRESULT identifier_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 464 HRESULT literal_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 465 HRESULT array_literal_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 466 HRESULT property_value_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 467
 468 HRESULT comma_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 469 HRESULT logical_or_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 470 HRESULT logical_and_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 471 HRESULT binary_or_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 472 HRESULT binary_xor_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 473 HRESULT binary_and_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 474 HRESULT instanceof_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 475 HRESULT in_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 476 HRESULT add_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 477 HRESULT sub_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 478 HRESULT mul_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 479 HRESULT div_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 480 HRESULT mod_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 481 HRESULT delete_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 482 HRESULT void_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 483 HRESULT typeof_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 484 HRESULT minus_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 485 HRESULT plus_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 486 HRESULT post_increment_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 487 HRESULT post_decrement_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 488 HRESULT pre_increment_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 489 HRESULT pre_decrement_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 490 HRESULT equal_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 491 HRESULT equal2_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 492 HRESULT not_equal_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 493 HRESULT not_equal2_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 494 HRESULT less_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 495 HRESULT lesseq_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 496 HRESULT greater_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 497 HRESULT greatereq_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 498 HRESULT binary_negation_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 499 HRESULT logical_negation_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 500 HRESULT left_shift_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 501 HRESULT right_shift_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 502 HRESULT right2_shift_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 503 HRESULT assign_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 504 HRESULT assign_lshift_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 505 HRESULT assign_rshift_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 506 HRESULT assign_rrshift_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 507 HRESULT assign_add_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 508 HRESULT assign_sub_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 509 HRESULT assign_mul_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 510 HRESULT assign_div_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 511 HRESULT assign_mod_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 512 HRESULT assign_and_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 513 HRESULT assign_or_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 514 HRESULT assign_xor_expression_eval(script_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);