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