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 _obj_literal_t {
23 DispatchEx *obj;
24 struct _obj_literal_t *next;
25 } obj_literal_t;
26
27 typedef struct _function_declaration_t {
28 function_expression_t *expr;
29
30 struct _function_declaration_t *next;
31 } function_declaration_t;
32
33 typedef struct _var_list_t {
34 const WCHAR *identifier;
35
36 struct _var_list_t *next;
37 } var_list_t;
38
39 typedef struct _func_stack {
40 function_declaration_t *func_head;
41 function_declaration_t *func_tail;
42 var_list_t *var_head;
43 var_list_t *var_tail;
44
45 struct _func_stack *next;
46 } func_stack_t;
47
48 typedef struct _parser_ctx_t {
49 LONG ref;
50
51 const WCHAR *ptr;
52 const WCHAR *begin;
53 const WCHAR *end;
54
55 script_ctx_t *script;
56 source_elements_t *source;
57 BOOL nl;
58 HRESULT hres;
59
60 jsheap_t heap;
61
62 obj_literal_t *obj_literals;
63 func_stack_t *func_stack;
64
65 struct _parser_ctx_t *next;
66 } parser_ctx_t;
67
68 HRESULT script_parse(script_ctx_t*,const WCHAR*,parser_ctx_t**);
69 void parser_release(parser_ctx_t*);
70
71 int parser_lex(void*,parser_ctx_t*);
72
73 static inline void parser_addref(parser_ctx_t *ctx)
74 {
75 ctx->ref++;
76 }
77
78 static inline void *parser_alloc(parser_ctx_t *ctx, DWORD size)
79 {
80 return jsheap_alloc(&ctx->heap, size);
81 }
82
83 static inline void *parser_alloc_tmp(parser_ctx_t *ctx, DWORD size)
84 {
85 return jsheap_alloc(&ctx->script->tmp_heap, size);
86 }
87
88 typedef struct _scope_chain_t {
89 LONG ref;
90 DispatchEx *obj;
91 struct _scope_chain_t *next;
92 } scope_chain_t;
93
94 HRESULT scope_push(scope_chain_t*,DispatchEx*,scope_chain_t**);
95 void scope_release(scope_chain_t*);
96
97 static inline void scope_addref(scope_chain_t *scope)
98 {
99 scope->ref++;
100 }
101
102 struct _exec_ctx_t {
103 LONG ref;
104
105 parser_ctx_t *parser;
106 scope_chain_t *scope_chain;
107 DispatchEx *var_disp;
108 IDispatch *this_obj;
109 };
110
111 static inline void exec_addref(exec_ctx_t *ctx)
112 {
113 ctx->ref++;
114 }
115
116 void exec_release(exec_ctx_t*);
117 HRESULT create_exec_ctx(IDispatch*,DispatchEx*,scope_chain_t*,exec_ctx_t**);
118 HRESULT exec_source(exec_ctx_t*,parser_ctx_t*,source_elements_t*,jsexcept_t*,VARIANT*);
119
120 typedef struct _statement_t statement_t;
121 typedef struct _expression_t expression_t;
122 typedef struct _parameter_t parameter_t;
123
124 HRESULT create_source_function(parser_ctx_t*,parameter_t*,source_elements_t*,scope_chain_t*,
125 const WCHAR*,DWORD,DispatchEx**);
126
127 typedef struct {
128 VARTYPE vt;
129 union {
130 LONG lval;
131 double dval;
132 const WCHAR *wstr;
133 VARIANT_BOOL bval;
134 IDispatch *disp;
135 } u;
136 } literal_t;
137
138 literal_t *parse_regexp(parser_ctx_t*);
139
140 typedef struct _variable_declaration_t {
141 const WCHAR *identifier;
142 expression_t *expr;
143
144 struct _variable_declaration_t *next;
145 } variable_declaration_t;
146
147 typedef struct {
148 enum{
149 RT_NORMAL,
150 RT_RETURN,
151 RT_BREAK,
152 RT_CONTINUE
153 } type;
154 jsexcept_t ei;
155 } return_type_t;
156
157 typedef HRESULT (*statement_eval_t)(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
158
159 struct _statement_t {
160 statement_eval_t eval;
161 statement_t *next;
162 };
163
164 typedef struct {
165 statement_t stat;
166 statement_t *stat_list;
167 } block_statement_t;
168
169 typedef struct {
170 statement_t stat;
171 variable_declaration_t *variable_list;
172 } var_statement_t;
173
174 typedef struct {
175 statement_t stat;
176 expression_t *expr;
177 } expression_statement_t;
178
179 typedef struct {
180 statement_t stat;
181 expression_t *expr;
182 statement_t *if_stat;
183 statement_t *else_stat;
184 } if_statement_t;
185
186 typedef struct {
187 statement_t stat;
188 BOOL do_while;
189 expression_t *expr;
190 statement_t *statement;
191 } while_statement_t;
192
193 typedef struct {
194 statement_t stat;
195 variable_declaration_t *variable_list;
196 expression_t *begin_expr;
197 expression_t *expr;
198 expression_t *end_expr;
199 statement_t *statement;
200 } for_statement_t;
201
202 typedef struct {
203 statement_t stat;
204 variable_declaration_t *variable;
205 expression_t *expr;
206 expression_t *in_expr;
207 statement_t *statement;
208 } forin_statement_t;
209
210 typedef struct {
211 statement_t stat;
212 const WCHAR *identifier;
213 } branch_statement_t;
214
215 typedef struct {
216 statement_t stat;
217 expression_t *expr;
218 statement_t *statement;
219 } with_statement_t;
220
221 typedef struct {
222 statement_t stat;
223 const WCHAR *identifier;
224 statement_t *statement;
225 } labelled_statement_t;
226
227 typedef struct _case_clausule_t {
228 expression_t *expr;
229 statement_t *stat;
230
231 struct _case_clausule_t *next;
232 } case_clausule_t;
233
234 typedef struct {
235 statement_t stat;
236 expression_t *expr;
237 case_clausule_t *case_list;
238 } switch_statement_t;
239
240 typedef struct {
241 const WCHAR *identifier;
242 statement_t *statement;
243 } catch_block_t;
244
245 typedef struct {
246 statement_t stat;
247 statement_t *try_statement;
248 catch_block_t *catch_block;
249 statement_t *finally_statement;
250 } try_statement_t;
251
252 HRESULT block_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
253 HRESULT var_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
254 HRESULT empty_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
255 HRESULT expression_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
256 HRESULT if_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
257 HRESULT while_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
258 HRESULT for_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
259 HRESULT forin_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
260 HRESULT continue_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
261 HRESULT break_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
262 HRESULT return_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
263 HRESULT with_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
264 HRESULT labelled_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
265 HRESULT switch_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
266 HRESULT throw_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
267 HRESULT try_statement_eval(exec_ctx_t*,statement_t*,return_type_t*,VARIANT*);
268
269 typedef struct {
270 enum {
271 EXPRVAL_VARIANT,
272 EXPRVAL_IDREF,
273 EXPRVAL_NAMEREF
274 } type;
275 union {
276 VARIANT var;
277 struct {
278 IDispatch *disp;
279 DISPID id;
280 } idref;
281 struct {
282 IDispatch *disp;
283 BSTR name;
284 } nameref;
285 } u;
286 } exprval_t;
287
288 typedef HRESULT (*expression_eval_t)(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
289
290 struct _expression_t {
291 expression_eval_t eval;
292 };
293
294 struct _parameter_t {
295 const WCHAR *identifier;
296
297 struct _parameter_t *next;
298 };
299
300 struct _source_elements_t {
301 statement_t *statement;
302 statement_t *statement_tail;
303 function_declaration_t *functions;
304 var_list_t *variables;
305 };
306
307 struct _function_expression_t {
308 expression_t expr;
309 const WCHAR *identifier;
310 parameter_t *parameter_list;
311 source_elements_t *source_elements;
312 const WCHAR *src_str;
313 DWORD src_len;
314 };
315
316 typedef struct {
317 expression_t expr;
318 expression_t *expression1;
319 expression_t *expression2;
320 } binary_expression_t;
321
322 typedef struct {
323 expression_t expr;
324 expression_t *expression;
325 } unary_expression_t;
326
327 typedef struct {
328 expression_t expr;
329 expression_t *expression;
330 expression_t *true_expression;
331 expression_t *false_expression;
332 } conditional_expression_t;
333
334 typedef struct {
335 expression_t expr;
336 expression_t *member_expr;
337 expression_t *expression;
338 } array_expression_t;
339
340 typedef struct {
341 expression_t expr;
342 expression_t *expression;
343 const WCHAR *identifier;
344 } member_expression_t;
345
346 typedef struct _argument_t {
347 expression_t *expr;
348
349 struct _argument_t *next;
350 } argument_t;
351
352 typedef struct {
353 expression_t expr;
354 expression_t *expression;
355 argument_t *argument_list;
356 } call_expression_t;
357
358 typedef struct {
359 expression_t expr;
360 const WCHAR *identifier;
361 } identifier_expression_t;
362
363 typedef struct {
364 expression_t expr;
365 literal_t *literal;
366 } literal_expression_t;
367
368 typedef struct _array_element_t {
369 int elision;
370 expression_t *expr;
371
372 struct _array_element_t *next;
373 } array_element_t;
374
375 typedef struct {
376 expression_t expr;
377 array_element_t *element_list;
378 int length;
379 } array_literal_expression_t;
380
381 typedef struct _prop_val_t {
382 literal_t *name;
383 expression_t *value;
384
385 struct _prop_val_t *next;
386 } prop_val_t;
387
388 typedef struct {
389 expression_t expr;
390 prop_val_t *property_list;
391 } property_value_expression_t;
392
393 typedef enum {
394 EXPR_COMMA,
395 EXPR_OR,
396 EXPR_AND,
397 EXPR_BOR,
398 EXPR_BXOR,
399 EXPR_BAND,
400 EXPR_INSTANCEOF,
401 EXPR_IN,
402 EXPR_ADD,
403 EXPR_SUB,
404 EXPR_MUL,
405 EXPR_DIV,
406 EXPR_MOD,
407 EXPR_DELETE,
408 EXPR_VOID,
409 EXPR_TYPEOF,
410 EXPR_MINUS,
411 EXPR_PLUS,
412 EXPR_POSTINC,
413 EXPR_POSTDEC,
414 EXPR_PREINC,
415 EXPR_PREDEC,
416 EXPR_EQ,
417 EXPR_EQEQ,
418 EXPR_NOTEQ,
419 EXPR_NOTEQEQ,
420 EXPR_LESS,
421 EXPR_LESSEQ,
422 EXPR_GREATER,
423 EXPR_GREATEREQ,
424 EXPR_BITNEG,
425 EXPR_LOGNEG,
426 EXPR_LSHIFT,
427 EXPR_RSHIFT,
428 EXPR_RRSHIFT,
429 EXPR_ASSIGN,
430 EXPR_ASSIGNLSHIFT,
431 EXPR_ASSIGNRSHIFT,
432 EXPR_ASSIGNRRSHIFT,
433 EXPR_ASSIGNADD,
434 EXPR_ASSIGNSUB,
435 EXPR_ASSIGNMUL,
436 EXPR_ASSIGNDIV,
437 EXPR_ASSIGNMOD,
438 EXPR_ASSIGNAND,
439 EXPR_ASSIGNOR,
440 EXPR_ASSIGNXOR
441 } expression_type_t;
442
443 HRESULT function_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
444 HRESULT conditional_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
445 HRESULT array_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
446 HRESULT member_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
447 HRESULT new_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
448 HRESULT call_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
449 HRESULT this_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
450 HRESULT identifier_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
451 HRESULT literal_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
452 HRESULT array_literal_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
453 HRESULT property_value_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
454
455 HRESULT comma_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
456 HRESULT logical_or_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
457 HRESULT logical_and_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
458 HRESULT binary_or_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
459 HRESULT binary_xor_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
460 HRESULT binary_and_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
461 HRESULT instanceof_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
462 HRESULT in_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
463 HRESULT add_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
464 HRESULT sub_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
465 HRESULT mul_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
466 HRESULT div_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
467 HRESULT mod_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
468 HRESULT delete_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
469 HRESULT void_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
470 HRESULT typeof_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
471 HRESULT minus_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
472 HRESULT plus_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
473 HRESULT post_increment_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
474 HRESULT post_decrement_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
475 HRESULT pre_increment_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
476 HRESULT pre_decrement_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
477 HRESULT equal_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
478 HRESULT equal2_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
479 HRESULT not_equal_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
480 HRESULT not_equal2_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
481 HRESULT less_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
482 HRESULT lesseq_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
483 HRESULT greater_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
484 HRESULT greatereq_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
485 HRESULT binary_negation_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
486 HRESULT logical_negation_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
487 HRESULT left_shift_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
488 HRESULT right_shift_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
489 HRESULT right2_shift_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
490 HRESULT assign_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
491 HRESULT assign_lshift_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
492 HRESULT assign_rshift_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
493 HRESULT assign_rrshift_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
494 HRESULT assign_add_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
495 HRESULT assign_sub_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
496 HRESULT assign_mul_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
497 HRESULT assign_div_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
498 HRESULT assign_mod_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
499 HRESULT assign_and_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
500 HRESULT assign_or_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
501 HRESULT assign_xor_expression_eval(exec_ctx_t*,expression_t*,DWORD,jsexcept_t*,exprval_t*);
502
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