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