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
  21 typedef struct _parser_ctx_t {
  22     LONG ref;
  23
  24     const WCHAR *ptr;
  25     const WCHAR *begin;
  26     const WCHAR *end;
  27
  28     script_ctx_t *script;
  29     source_elements_t *source;
  30     BOOL nl;
  31     HRESULT hres;
  32
  33     jsheap_t tmp_heap;
  34     jsheap_t heap;
  35
  36     struct _parser_ctx_t *next;
  37 } parser_ctx_t;
  38
  39 HRESULT script_parse(script_ctx_t*,const WCHAR*,parser_ctx_t**);
  40 void parser_release(parser_ctx_t*);
  41
  42 int parser_lex(void*,parser_ctx_t*);
  43
  44 static inline void parser_addref(parser_ctx_t *ctx)
  45 {
  46     ctx->ref++;
  47 }
  48
  49 static inline void *parser_alloc(parser_ctx_t *ctx, DWORD size)
  50 {
  51     return jsheap_alloc(&ctx->heap, size);
  52 }
  53
  54 static inline void *parser_alloc_tmp(parser_ctx_t *ctx, DWORD size)
  55 {
  56     return jsheap_alloc(&ctx->tmp_heap, size);
  57 }
  58
  59 typedef struct _scope_chain_t {
  60     LONG ref;
  61     DispatchEx *obj;
  62     struct _scope_chain_t *next;
  63 } scope_chain_t;
  64
  65 HRESULT scope_push(scope_chain_t*,DispatchEx*,scope_chain_t**);
  66 void scope_release(scope_chain_t*);
  67
  68 static inline void scope_addref(scope_chain_t *scope)
  69 {
  70     scope->ref++;
  71 }
  72
  73 struct _exec_ctx_t {
  74     LONG ref;
  75
  76     parser_ctx_t *parser;
  77     scope_chain_t *scope_chain;
  78 };
  79
  80 static inline void exec_addref(exec_ctx_t *ctx)
  81 {
  82     ctx->ref++;
  83 }
  84
  85 void exec_release(exec_ctx_t*);
  86 HRESULT create_exec_ctx(scope_chain_t*,exec_ctx_t**);
  87 HRESULT exec_source(exec_ctx_t*,parser_ctx_t*,source_elements_t*,jsexcept_t*,VARIANT*);
  88
  89 typedef struct _statement_t statement_t;
  90 typedef struct _expression_t expression_t;
  91 typedef struct _parameter_t parameter_t;
  92
  93 typedef struct {
  94     VARTYPE vt;
  95     union {
  96         LONG lval;
  97         double dval;
  98         const WCHAR *wstr;
  99         VARIANT_BOOL bval;
 100         IDispatch *disp;
 101     } u;
 102 } literal_t;
 103
 104 typedef struct _variable_declaration_t {
 105     const WCHAR *identifier;
 106     expression_t *expr;
 107
 108     struct _variable_declaration_t *next;
 109 } variable_declaration_t;
 110
 111 typedef struct {
 112     enum{
 113         RT_NORMAL,
 114         RT_RETURN,
 115         RT_BREAK,
 116         RT_CONTINUE
 117     } type;
 118     jsexcept_t ei;
 119 } return_type_t;
 120
 121 typedef HRESULT (*statement_eval_t)(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 122
 123 struct _statement_t {
 124     statement_eval_t eval;
 125     statement_t *next;
 126 };
 127
 128 typedef struct {
 129     statement_t stat;
 130     statement_t *stat_list;
 131 } block_statement_t;
 132
 133 typedef struct {
 134     statement_t stat;
 135     variable_declaration_t *variable_list;
 136 } var_statement_t;
 137
 138 typedef struct {
 139     statement_t stat;
 140     expression_t *expr;
 141 } expression_statement_t;
 142
 143 typedef struct {
 144     statement_t stat;
 145     expression_t *expr;
 146     statement_t *if_stat;
 147     statement_t *else_stat;
 148 } if_statement_t;
 149
 150 typedef struct {
 151     statement_t stat;
 152     expression_t *expr;
 153     statement_t *statement;
 154 } while_statement_t;
 155
 156 typedef struct {
 157     statement_t stat;
 158     variable_declaration_t *variable_list;
 159     expression_t *begin_expr;
 160     expression_t *expr;
 161     expression_t *end_expr;
 162     statement_t *statement;
 163 } for_statement_t;
 164
 165 typedef struct {
 166     statement_t stat;
 167     variable_declaration_t *variable;
 168     expression_t *expr;
 169     expression_t *in_expr;
 170     statement_t *statement;
 171 } forin_statement_t;
 172
 173 typedef struct {
 174     statement_t stat;
 175     const WCHAR *identifier;
 176 } branch_statement_t;
 177
 178 typedef struct {
 179     statement_t stat;
 180     expression_t *expr;
 181     statement_t *statement;
 182 } with_statement_t;
 183
 184 typedef struct {
 185     statement_t stat;
 186     const WCHAR *identifier;
 187     statement_t *statement;
 188 } labelled_statement_t;
 189
 190 typedef struct _case_clausule_t {
 191     expression_t *expr;
 192     statement_t *stat;
 193
 194     struct _case_clausule_t *next;
 195 } case_clausule_t;
 196
 197 typedef struct {
 198     statement_t stat;
 199     expression_t *expr;
 200     case_clausule_t *case_list;
 201 } switch_statement_t;
 202
 203 typedef struct {
 204     const WCHAR *identifier;
 205     statement_t *statement;
 206 } catch_block_t;
 207
 208 typedef struct {
 209     statement_t stat;
 210     statement_t *try_statement;
 211     catch_block_t *catch_block;
 212     statement_t *finally_statement;
 213 } try_statement_t;
 214
 215 HRESULT block_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 216 HRESULT var_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 217 HRESULT empty_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 218 HRESULT expression_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 219 HRESULT if_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 220 HRESULT dowhile_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 221 HRESULT while_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 222 HRESULT for_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 223 HRESULT forin_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 224 HRESULT continue_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 225 HRESULT break_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 226 HRESULT return_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 227 HRESULT with_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 228 HRESULT labelled_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 229 HRESULT switch_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 230 HRESULT throw_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 231 HRESULT try_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
 232
 233 typedef struct {
 234     enum {
 235         EXPRVAL_VARIANT,
 236         EXPRVAL_IDREF,
 237         EXPRVAL_NAMEREF
 238     } type;
 239     union {
 240         VARIANT var;
 241         struct {
 242             IDispatch *disp;
 243             DISPID id;
 244         } idref;
 245         struct {
 246             IDispatch *disp;
 247             BSTR name;
 248         } nameref;
 249     } u;
 250 } exprval_t;
 251
 252 typedef HRESULT (*expression_eval_t)(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 253
 254 struct _expression_t {
 255     expression_eval_t eval;
 256 };
 257
 258 struct _parameter_t {
 259     const WCHAR *identifier;
 260
 261     struct _parameter_t *next;
 262 };
 263
 264 typedef struct _function_declaration_t {
 265     const WCHAR *identifier;
 266     parameter_t *parameter_list;
 267     source_elements_t *source_elements;
 268
 269     struct _function_declaration_t *next;
 270 } function_declaration_t;
 271
 272 struct _source_elements_t {
 273     statement_t *statement;
 274     statement_t *statement_tail;
 275     function_declaration_t *functions;
 276     function_declaration_t *functions_tail;
 277 };
 278
 279 typedef struct {
 280     expression_t expr;
 281     const WCHAR *identifier;
 282     parameter_t *parameter_list;
 283     source_elements_t *source_elements;
 284 } function_expression_t;
 285
 286 typedef struct {
 287     expression_t expr;
 288     expression_t *expression1;
 289     expression_t *expression2;
 290 } binary_expression_t;
 291
 292 typedef struct {
 293     expression_t expr;
 294     expression_t *expression;
 295 } unary_expression_t;
 296
 297 typedef struct {
 298     expression_t expr;
 299     expression_t *expression;
 300     expression_t *true_expression;
 301     expression_t *false_expression;
 302 } conditional_expression_t;
 303
 304 typedef struct {
 305     expression_t expr;
 306     expression_t *member_expr;
 307     expression_t *expression;
 308 } array_expression_t;
 309
 310 typedef struct {
 311     expression_t expr;
 312     expression_t *expression;
 313     const WCHAR *identifier;
 314 } member_expression_t;
 315
 316 typedef struct _argument_t {
 317     expression_t *expr;
 318
 319     struct _argument_t *next;
 320 } argument_t;
 321
 322 typedef struct {
 323     expression_t expr;
 324     expression_t *expression;
 325     argument_t *argument_list;
 326 } call_expression_t;
 327
 328 typedef struct {
 329     expression_t expr;
 330     const WCHAR *identifier;
 331 } identifier_expression_t;
 332
 333 typedef struct {
 334     expression_t expr;
 335     literal_t *literal;
 336 } literal_expression_t;
 337
 338 typedef struct _array_element_t {
 339     int elision;
 340     expression_t *expr;
 341
 342     struct _array_element_t *next;
 343 } array_element_t;
 344
 345 typedef struct {
 346     expression_t expr;
 347     array_element_t *element_list;
 348     int length;
 349 } array_literal_expression_t;
 350
 351 typedef struct _prop_val_t {
 352     literal_t *name;
 353     expression_t *value;
 354
 355     struct _prop_val_t *next;
 356 } prop_val_t;
 357
 358 typedef struct {
 359     expression_t expr;
 360     prop_val_t *property_list;
 361 } property_value_expression_t;
 362
 363 typedef enum {
 364      EXPR_COMMA,
 365      EXPR_OR,
 366      EXPR_AND,
 367      EXPR_BOR,
 368      EXPR_BXOR,
 369      EXPR_BAND,
 370      EXPR_INSTANCEOF,
 371      EXPR_IN,
 372      EXPR_ADD,
 373      EXPR_SUB,
 374      EXPR_MUL,
 375      EXPR_DIV,
 376      EXPR_MOD,
 377      EXPR_DELETE,
 378      EXPR_VOID,
 379      EXPR_TYPEOF,
 380      EXPR_MINUS,
 381      EXPR_PLUS,
 382      EXPR_POSTINC,
 383      EXPR_POSTDEC,
 384      EXPR_PREINC,
 385      EXPR_PREDEC,
 386      EXPR_NEW,
 387      EXPR_EQ,
 388      EXPR_EQEQ,
 389      EXPR_NOTEQ,
 390      EXPR_NOTEQEQ,
 391      EXPR_LESS,
 392      EXPR_LESSEQ,
 393      EXPR_GREATER,
 394      EXPR_GREATEREQ,
 395      EXPR_BITNEG,
 396      EXPR_LOGNEG,
 397      EXPR_LSHIFT,
 398      EXPR_RSHIFT,
 399      EXPR_RRSHIFT,
 400      EXPR_ASSIGN,
 401      EXPR_ASSIGNLSHIFT,
 402      EXPR_ASSIGNRSHIFT,
 403      EXPR_ASSIGNRRSHIFT,
 404      EXPR_ASSIGNADD,
 405      EXPR_ASSIGNSUB,
 406      EXPR_ASSIGNMUL,
 407      EXPR_ASSIGNDIV,
 408      EXPR_ASSIGNMOD,
 409      EXPR_ASSIGNAND,
 410      EXPR_ASSIGNOR,
 411      EXPR_ASSIGNXOR
 412 } expression_type_t;
 413
 414 HRESULT function_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 415 HRESULT conditional_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 416 HRESULT array_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 417 HRESULT member_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 418 HRESULT member_new_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 419 HRESULT call_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 420 HRESULT this_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 421 HRESULT identifier_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 422 HRESULT literal_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 423 HRESULT array_literal_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 424 HRESULT property_value_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 425
 426 HRESULT comma_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 427 HRESULT logical_or_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 428 HRESULT logical_and_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 429 HRESULT binary_or_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 430 HRESULT binary_xor_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 431 HRESULT binary_and_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 432 HRESULT instanceof_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 433 HRESULT in_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 434 HRESULT add_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 435 HRESULT sub_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 436 HRESULT mul_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 437 HRESULT div_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 438 HRESULT mod_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 439 HRESULT delete_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 440 HRESULT void_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 441 HRESULT typeof_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 442 HRESULT minus_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 443 HRESULT plus_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 444 HRESULT post_increment_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 445 HRESULT post_decrement_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 446 HRESULT pre_increment_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 447 HRESULT pre_decrement_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 448 HRESULT new_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 449 HRESULT equal_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 450 HRESULT equal2_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 451 HRESULT not_equal_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 452 HRESULT not_equal2_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 453 HRESULT less_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 454 HRESULT lesseq_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 455 HRESULT greater_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 456 HRESULT greatereq_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 457 HRESULT binary_negation_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 458 HRESULT logical_negation_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 459 HRESULT left_shift_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 460 HRESULT right_shift_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 461 HRESULT right2_shift_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 462 HRESULT assign_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 463 HRESULT assign_lshift_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 464 HRESULT assign_rshift_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 465 HRESULT assign_rrshift_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 466 HRESULT assign_add_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 467 HRESULT assign_sub_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 468 HRESULT assign_mul_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 469 HRESULT assign_div_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 470 HRESULT assign_mod_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 471 HRESULT assign_and_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 472 HRESULT assign_or_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
 473 HRESULT assign_xor_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);