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