2 * Copyright 2011 Jacek Caban for CodeWeavers
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.
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.
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
25 #include "wine/debug.h"
27 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
28 WINE_DECLARE_DEBUG_CHANNEL(jscript_disas);
30 typedef struct _statement_ctx_t {
36 unsigned continue_label;
38 const labelled_statement_t *labelled_stat;
40 struct _statement_ctx_t *next;
43 struct _compiler_ctx_t {
54 statement_ctx_t *stat_ctx;
59 instr_arg_type_t arg1_type;
60 instr_arg_type_t arg2_type;
62 #define X(n,a,b,c) {#n,b,c},
67 static void dump_instr_arg(instr_arg_type_t type, instr_arg_t *arg)
71 TRACE_(jscript_disas)("\t%s", debugstr_w(arg->str));
74 TRACE_(jscript_disas)("\t%s", debugstr_wn(arg->bstr, SysStringLen(arg->bstr)));
77 TRACE_(jscript_disas)("\t%d", arg->uint);
81 TRACE_(jscript_disas)("\t%u", arg->uint);
84 TRACE_(jscript_disas)("\t%lf", *arg->dbl);
94 static void dump_code(compiler_ctx_t *ctx, unsigned off)
98 for(instr = ctx->code->instrs+off; instr < ctx->code->instrs+ctx->code_off; instr++) {
99 TRACE_(jscript_disas)("%d:\t%s", (int)(instr-ctx->code->instrs), instr_info[instr->op].op_str);
100 dump_instr_arg(instr_info[instr->op].arg1_type, &instr->arg1);
101 dump_instr_arg(instr_info[instr->op].arg2_type, &instr->arg2);
102 TRACE_(jscript_disas)("\n");
106 static HRESULT compile_expression(compiler_ctx_t*,expression_t*);
107 static HRESULT compile_statement(compiler_ctx_t*,statement_ctx_t*,statement_t*);
109 static inline void *compiler_alloc(bytecode_t *code, size_t size)
111 return jsheap_alloc(&code->heap, size);
114 static WCHAR *compiler_alloc_string(bytecode_t *code, const WCHAR *str)
119 size = (strlenW(str)+1)*sizeof(WCHAR);
120 ret = compiler_alloc(code, size);
122 memcpy(ret, str, size);
126 static BSTR compiler_alloc_bstr(compiler_ctx_t *ctx, const WCHAR *str)
128 if(!ctx->code->bstr_pool_size) {
129 ctx->code->bstr_pool = heap_alloc(8 * sizeof(BSTR));
130 if(!ctx->code->bstr_pool)
132 ctx->code->bstr_pool_size = 8;
133 }else if(ctx->code->bstr_pool_size == ctx->code->bstr_cnt) {
136 new_pool = heap_realloc(ctx->code->bstr_pool, ctx->code->bstr_pool_size*2*sizeof(BSTR));
140 ctx->code->bstr_pool = new_pool;
141 ctx->code->bstr_pool_size *= 2;
144 ctx->code->bstr_pool[ctx->code->bstr_cnt] = SysAllocString(str);
145 if(!ctx->code->bstr_pool[ctx->code->bstr_cnt])
148 return ctx->code->bstr_pool[ctx->code->bstr_cnt++];
151 static unsigned push_instr(compiler_ctx_t *ctx, jsop_t op)
153 assert(ctx->code_size >= ctx->code_off);
155 if(ctx->code_size == ctx->code_off) {
158 new_instrs = heap_realloc(ctx->code->instrs, ctx->code_size*2*sizeof(instr_t));
162 ctx->code->instrs = new_instrs;
166 ctx->code->instrs[ctx->code_off].op = op;
167 return ctx->code_off++;
170 static inline instr_t *instr_ptr(compiler_ctx_t *ctx, unsigned off)
172 assert(off < ctx->code_off);
173 return ctx->code->instrs + off;
176 static HRESULT push_instr_int(compiler_ctx_t *ctx, jsop_t op, LONG arg)
180 instr = push_instr(ctx, op);
182 return E_OUTOFMEMORY;
184 instr_ptr(ctx, instr)->arg1.lng = arg;
188 static HRESULT push_instr_str(compiler_ctx_t *ctx, jsop_t op, const WCHAR *arg)
193 str = compiler_alloc_string(ctx->code, arg);
195 return E_OUTOFMEMORY;
197 instr = push_instr(ctx, op);
199 return E_OUTOFMEMORY;
201 instr_ptr(ctx, instr)->arg1.str = str;
205 static HRESULT push_instr_bstr(compiler_ctx_t *ctx, jsop_t op, const WCHAR *arg)
210 str = compiler_alloc_bstr(ctx, arg);
212 return E_OUTOFMEMORY;
214 instr = push_instr(ctx, op);
216 return E_OUTOFMEMORY;
218 instr_ptr(ctx, instr)->arg1.bstr = str;
222 static HRESULT push_instr_bstr_uint(compiler_ctx_t *ctx, jsop_t op, const WCHAR *arg1, unsigned arg2)
227 str = compiler_alloc_bstr(ctx, arg1);
229 return E_OUTOFMEMORY;
231 instr = push_instr(ctx, op);
233 return E_OUTOFMEMORY;
235 instr_ptr(ctx, instr)->arg1.bstr = str;
236 instr_ptr(ctx, instr)->arg2.uint = arg2;
240 static HRESULT push_instr_uint_str(compiler_ctx_t *ctx, jsop_t op, unsigned arg1, const WCHAR *arg2)
245 str = compiler_alloc_string(ctx->code, arg2);
247 return E_OUTOFMEMORY;
249 instr = push_instr(ctx, op);
251 return E_OUTOFMEMORY;
253 instr_ptr(ctx, instr)->arg1.uint = arg1;
254 instr_ptr(ctx, instr)->arg2.str = str;
258 static HRESULT push_instr_double(compiler_ctx_t *ctx, jsop_t op, double arg)
263 dbl = compiler_alloc(ctx->code, sizeof(arg));
265 return E_OUTOFMEMORY;
268 instr = push_instr(ctx, op);
270 return E_OUTOFMEMORY;
272 instr_ptr(ctx, instr)->arg1.dbl = dbl;
276 static HRESULT push_instr_uint(compiler_ctx_t *ctx, jsop_t op, unsigned arg)
280 instr = push_instr(ctx, op);
282 return E_OUTOFMEMORY;
284 instr_ptr(ctx, instr)->arg1.uint = arg;
288 static HRESULT compile_binary_expression(compiler_ctx_t *ctx, binary_expression_t *expr, jsop_t op)
292 hres = compile_expression(ctx, expr->expression1);
296 hres = compile_expression(ctx, expr->expression2);
300 return push_instr(ctx, op) ? S_OK : E_OUTOFMEMORY;
303 static HRESULT compile_unary_expression(compiler_ctx_t *ctx, unary_expression_t *expr, jsop_t op)
307 hres = compile_expression(ctx, expr->expression);
311 return push_instr(ctx, op) ? S_OK : E_OUTOFMEMORY;
314 /* ECMA-262 3rd Edition 11.2.1 */
315 static HRESULT compile_member_expression(compiler_ctx_t *ctx, member_expression_t *expr)
319 hres = compile_expression(ctx, expr->expression);
323 return push_instr_bstr(ctx, OP_member, expr->identifier);
326 #define LABEL_FLAG 0x80000000
328 static unsigned alloc_label(compiler_ctx_t *ctx)
330 if(!ctx->labels_size) {
331 ctx->labels = heap_alloc(8 * sizeof(*ctx->labels));
334 ctx->labels_size = 8;
335 }else if(ctx->labels_size == ctx->labels_cnt) {
336 unsigned *new_labels;
338 new_labels = heap_realloc(ctx->labels, 2*ctx->labels_size*sizeof(*ctx->labels));
342 ctx->labels = new_labels;
343 ctx->labels_size *= 2;
346 return ctx->labels_cnt++ | LABEL_FLAG;
349 static void label_set_addr(compiler_ctx_t *ctx, unsigned label)
351 assert(label & LABEL_FLAG);
352 ctx->labels[label & ~LABEL_FLAG] = ctx->code_off;
355 static inline BOOL is_memberid_expr(expression_type_t type)
357 return type == EXPR_IDENT || type == EXPR_MEMBER || type == EXPR_ARRAY;
360 static HRESULT compile_memberid_expression(compiler_ctx_t *ctx, expression_t *expr, unsigned flags)
366 identifier_expression_t *ident_expr = (identifier_expression_t*)expr;
368 hres = push_instr_bstr_uint(ctx, OP_identid, ident_expr->identifier, flags);
372 binary_expression_t *array_expr = (binary_expression_t*)expr;
374 hres = compile_expression(ctx, array_expr->expression1);
378 hres = compile_expression(ctx, array_expr->expression2);
382 hres = push_instr_uint(ctx, OP_memberid, flags);
386 member_expression_t *member_expr = (member_expression_t*)expr;
388 hres = compile_expression(ctx, member_expr->expression);
392 /* FIXME: Potential optimization */
393 hres = push_instr_str(ctx, OP_str, member_expr->identifier);
397 hres = push_instr_uint(ctx, OP_memberid, flags);
407 static HRESULT compile_increment_expression(compiler_ctx_t *ctx, unary_expression_t *expr, jsop_t op, int n)
411 if(!is_memberid_expr(expr->expression->type)) {
412 hres = compile_expression(ctx, expr->expression);
416 return push_instr_uint(ctx, OP_throw_ref, JS_E_ILLEGAL_ASSIGN);
419 hres = compile_memberid_expression(ctx, expr->expression, fdexNameEnsure);
423 return push_instr_int(ctx, op, n);
426 /* ECMA-262 3rd Edition 11.14 */
427 static HRESULT compile_comma_expression(compiler_ctx_t *ctx, binary_expression_t *expr)
431 hres = compile_expression(ctx, expr->expression1);
435 if(!push_instr(ctx, OP_pop))
436 return E_OUTOFMEMORY;
438 return compile_expression(ctx, expr->expression2);
441 /* ECMA-262 3rd Edition 11.11 */
442 static HRESULT compile_logical_expression(compiler_ctx_t *ctx, binary_expression_t *expr, jsop_t op)
447 hres = compile_expression(ctx, expr->expression1);
451 instr = push_instr(ctx, op);
453 return E_OUTOFMEMORY;
455 hres = compile_expression(ctx, expr->expression2);
459 instr_ptr(ctx, instr)->arg1.uint = ctx->code_off;
463 /* ECMA-262 3rd Edition 11.12 */
464 static HRESULT compile_conditional_expression(compiler_ctx_t *ctx, conditional_expression_t *expr)
466 unsigned jmp_false, jmp_end;
469 hres = compile_expression(ctx, expr->expression);
473 jmp_false = push_instr(ctx, OP_cnd_z);
475 return E_OUTOFMEMORY;
477 hres = compile_expression(ctx, expr->true_expression);
481 jmp_end = push_instr(ctx, OP_jmp);
483 return E_OUTOFMEMORY;
485 instr_ptr(ctx, jmp_false)->arg1.uint = ctx->code_off;
486 if(!push_instr(ctx, OP_pop))
487 return E_OUTOFMEMORY;
489 hres = compile_expression(ctx, expr->false_expression);
493 instr_ptr(ctx, jmp_end)->arg1.uint = ctx->code_off;
497 static HRESULT compile_new_expression(compiler_ctx_t *ctx, call_expression_t *expr)
499 unsigned arg_cnt = 0;
503 hres = compile_expression(ctx, expr->expression);
507 for(arg = expr->argument_list; arg; arg = arg->next) {
508 hres = compile_expression(ctx, arg->expr);
514 return push_instr_int(ctx, OP_new, arg_cnt);
517 static HRESULT compile_call_expression(compiler_ctx_t *ctx, call_expression_t *expr, BOOL *no_ret)
519 unsigned arg_cnt = 0;
525 if(is_memberid_expr(expr->expression->type)) {
527 hres = compile_memberid_expression(ctx, expr->expression, 0);
530 hres = compile_expression(ctx, expr->expression);
536 for(arg = expr->argument_list; arg; arg = arg->next) {
537 hres = compile_expression(ctx, arg->expr);
543 instr = push_instr(ctx, op);
545 return E_OUTOFMEMORY;
547 instr_ptr(ctx, instr)->arg1.uint = arg_cnt;
548 instr_ptr(ctx, instr)->arg2.lng = no_ret == NULL;
554 static HRESULT compile_delete_expression(compiler_ctx_t *ctx, unary_expression_t *expr)
558 switch(expr->expression->type) {
560 binary_expression_t *array_expr = (binary_expression_t*)expr->expression;
562 hres = compile_expression(ctx, array_expr->expression1);
566 hres = compile_expression(ctx, array_expr->expression2);
570 if(!push_instr(ctx, OP_delete))
571 return E_OUTOFMEMORY;
575 member_expression_t *member_expr = (member_expression_t*)expr->expression;
577 hres = compile_expression(ctx, member_expr->expression);
581 /* FIXME: Potential optimization */
582 hres = push_instr_str(ctx, OP_str, member_expr->identifier);
586 if(!push_instr(ctx, OP_delete))
587 return E_OUTOFMEMORY;
591 return push_instr_bstr(ctx, OP_delete_ident, ((identifier_expression_t*)expr->expression)->identifier);
593 const WCHAR fixmeW[] = {'F','I','X','M','E',0};
595 WARN("invalid delete, unimplemented exception message\n");
597 hres = compile_expression(ctx, expr->expression);
601 return push_instr_uint_str(ctx, OP_throw_type, JS_E_INVALID_DELETE, fixmeW);
608 static HRESULT compile_assign_expression(compiler_ctx_t *ctx, binary_expression_t *expr, jsop_t op)
612 if(!is_memberid_expr(expr->expression1->type)) {
613 hres = compile_expression(ctx, expr->expression1);
617 hres = compile_expression(ctx, expr->expression2);
621 if(op != OP_LAST && !push_instr(ctx, op))
622 return E_OUTOFMEMORY;
624 return push_instr_uint(ctx, OP_throw_ref, JS_E_ILLEGAL_ASSIGN);
627 hres = compile_memberid_expression(ctx, expr->expression1, fdexNameEnsure);
631 if(op != OP_LAST && !push_instr(ctx, OP_refval))
632 return E_OUTOFMEMORY;
634 hres = compile_expression(ctx, expr->expression2);
638 if(op != OP_LAST && !push_instr(ctx, op))
639 return E_OUTOFMEMORY;
641 if(!push_instr(ctx, OP_assign))
642 return E_OUTOFMEMORY;
647 static HRESULT compile_typeof_expression(compiler_ctx_t *ctx, unary_expression_t *expr)
652 if(is_memberid_expr(expr->expression->type)) {
653 if(expr->expression->type == EXPR_IDENT)
654 return push_instr_str(ctx, OP_typeofident, ((identifier_expression_t*)expr->expression)->identifier);
657 hres = compile_memberid_expression(ctx, expr->expression, 0);
660 hres = compile_expression(ctx, expr->expression);
665 return push_instr(ctx, op) ? S_OK : E_OUTOFMEMORY;
668 static HRESULT compile_literal(compiler_ctx_t *ctx, literal_t *literal)
670 switch(literal->type) {
672 return push_instr_int(ctx, OP_bool, literal->u.bval);
674 return push_instr_double(ctx, OP_double, literal->u.dval);
676 return push_instr_int(ctx, OP_int, literal->u.lval);
678 return push_instr(ctx, OP_null) ? S_OK : E_OUTOFMEMORY;
680 return push_instr_str(ctx, OP_str, literal->u.wstr);
685 str = compiler_alloc(ctx->code, (literal->u.regexp.str_len+1)*sizeof(WCHAR));
687 return E_OUTOFMEMORY;
688 memcpy(str, literal->u.regexp.str, literal->u.regexp.str_len*sizeof(WCHAR));
689 str[literal->u.regexp.str_len] = 0;
691 instr = push_instr(ctx, OP_regexp);
693 return E_OUTOFMEMORY;
695 instr_ptr(ctx, instr)->arg1.str = str;
696 instr_ptr(ctx, instr)->arg2.lng = literal->u.regexp.flags;
705 static HRESULT literal_as_bstr(compiler_ctx_t *ctx, literal_t *literal, BSTR *str)
707 switch(literal->type) {
709 *str = compiler_alloc_bstr(ctx, literal->u.wstr);
712 *str = int_to_bstr(literal->u.lval);
715 return double_to_bstr(literal->u.dval, str);
720 return *str ? S_OK : E_OUTOFMEMORY;
723 static HRESULT compile_array_literal(compiler_ctx_t *ctx, array_literal_expression_t *expr)
725 unsigned i, elem_cnt = expr->length;
726 array_element_t *iter;
729 for(iter = expr->element_list; iter; iter = iter->next) {
730 elem_cnt += iter->elision+1;
732 for(i=0; i < iter->elision; i++) {
733 if(!push_instr(ctx, OP_undefined))
734 return E_OUTOFMEMORY;
737 hres = compile_expression(ctx, iter->expr);
742 for(i=0; i < expr->length; i++) {
743 if(!push_instr(ctx, OP_undefined))
744 return E_OUTOFMEMORY;
747 return push_instr_uint(ctx, OP_carray, elem_cnt);
750 static HRESULT compile_object_literal(compiler_ctx_t *ctx, property_value_expression_t *expr)
757 if(!push_instr(ctx, OP_new_obj))
758 return E_OUTOFMEMORY;
760 for(iter = expr->property_list; iter; iter = iter->next) {
761 hres = literal_as_bstr(ctx, iter->name, &name);
765 hres = compile_expression(ctx, iter->value);
769 instr = push_instr(ctx, OP_obj_prop);
771 return E_OUTOFMEMORY;
773 instr_ptr(ctx, instr)->arg1.bstr = name;
779 static HRESULT compile_function_expression(compiler_ctx_t *ctx, function_expression_t *expr)
783 /* FIXME: not exactly right */
785 return push_instr_bstr(ctx, OP_ident, expr->identifier);
787 instr = push_instr(ctx, OP_func);
789 return E_OUTOFMEMORY;
791 instr_ptr(ctx, instr)->arg1.func = expr;
795 static HRESULT compile_expression_noret(compiler_ctx_t *ctx, expression_t *expr, BOOL *no_ret)
799 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_add);
801 return compile_logical_expression(ctx, (binary_expression_t*)expr, OP_cnd_z);
803 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_array);
805 return compile_array_literal(ctx, (array_literal_expression_t*)expr);
807 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_LAST);
809 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_add);
811 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_and);
813 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_sub);
815 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_mul);
817 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_div);
819 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_mod);
821 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_or);
822 case EXPR_ASSIGNLSHIFT:
823 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_lshift);
824 case EXPR_ASSIGNRSHIFT:
825 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_rshift);
826 case EXPR_ASSIGNRRSHIFT:
827 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_rshift2);
829 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_xor);
831 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_and);
833 return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_bneg);
835 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_or);
837 return compile_call_expression(ctx, (call_expression_t*)expr, no_ret);
839 return compile_comma_expression(ctx, (binary_expression_t*)expr);
841 return compile_conditional_expression(ctx, (conditional_expression_t*)expr);
843 return compile_delete_expression(ctx, (unary_expression_t*)expr);
845 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_div);
847 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_eq);
849 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_eq2);
851 return compile_function_expression(ctx, (function_expression_t*)expr);
853 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_gt);
855 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_gteq);
857 return push_instr_bstr(ctx, OP_ident, ((identifier_expression_t*)expr)->identifier);
859 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_in);
860 case EXPR_INSTANCEOF:
861 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_instanceof);
863 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_lt);
865 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_lteq);
867 return compile_literal(ctx, ((literal_expression_t*)expr)->literal);
869 return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_neg);
871 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_lshift);
873 return compile_member_expression(ctx, (member_expression_t*)expr);
875 return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_minus);
877 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_mod);
879 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_mul);
881 return compile_new_expression(ctx, (call_expression_t*)expr);
883 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_neq);
885 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_neq2);
887 return compile_logical_expression(ctx, (binary_expression_t*)expr, OP_cnd_nz);
889 return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_tonum);
891 return compile_increment_expression(ctx, (unary_expression_t*)expr, OP_postinc, -1);
893 return compile_increment_expression(ctx, (unary_expression_t*)expr, OP_postinc, 1);
895 return compile_increment_expression(ctx, (unary_expression_t*)expr, OP_preinc, -1);
897 return compile_increment_expression(ctx, (unary_expression_t*)expr, OP_preinc, 1);
899 return compile_object_literal(ctx, (property_value_expression_t*)expr);
901 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_rshift);
903 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_rshift2);
905 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_sub);
907 return push_instr(ctx, OP_this) ? S_OK : E_OUTOFMEMORY;
909 return compile_typeof_expression(ctx, (unary_expression_t*)expr);
911 return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_void);
913 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_xor);
921 static HRESULT compile_expression(compiler_ctx_t *ctx, expression_t *expr)
923 return compile_expression_noret(ctx, expr, NULL);
926 static inline BOOL is_loop_statement(statement_type_t type)
928 return type == STAT_FOR || type == STAT_FORIN || type == STAT_WHILE;
931 /* ECMA-262 3rd Edition 12.1 */
932 static HRESULT compile_block_statement(compiler_ctx_t *ctx, statement_t *iter)
936 /* FIXME: do it only if needed */
938 return push_instr(ctx, OP_undefined) ? S_OK : E_OUTOFMEMORY;
941 hres = compile_statement(ctx, NULL, iter);
949 if(!push_instr(ctx, OP_pop))
950 return E_OUTOFMEMORY;
956 /* ECMA-262 3rd Edition 12.2 */
957 static HRESULT compile_variable_list(compiler_ctx_t *ctx, variable_declaration_t *list)
959 variable_declaration_t *iter;
962 for(iter = list; iter; iter = iter->next) {
966 hres = compile_expression(ctx, iter->expr);
970 hres = push_instr_bstr(ctx, OP_var_set, iter->identifier);
978 /* ECMA-262 3rd Edition 12.2 */
979 static HRESULT compile_var_statement(compiler_ctx_t *ctx, var_statement_t *stat)
983 hres = compile_variable_list(ctx, stat->variable_list);
987 return push_instr(ctx, OP_undefined) ? S_OK : E_OUTOFMEMORY;
990 /* ECMA-262 3rd Edition 12.4 */
991 static HRESULT compile_expression_statement(compiler_ctx_t *ctx, expression_statement_t *stat)
996 hres = compile_expression_noret(ctx, stat->expr, &no_ret);
1000 /* FIXME: that's a big potential optimization */
1001 if(no_ret && !push_instr(ctx, OP_undefined))
1002 return E_OUTOFMEMORY;
1007 /* ECMA-262 3rd Edition 12.5 */
1008 static HRESULT compile_if_statement(compiler_ctx_t *ctx, if_statement_t *stat)
1010 unsigned jmp_else, jmp_end;
1013 hres = compile_expression(ctx, stat->expr);
1017 jmp_else = push_instr(ctx, OP_jmp_z);
1019 return E_OUTOFMEMORY;
1021 hres = compile_statement(ctx, NULL, stat->if_stat);
1025 jmp_end = push_instr(ctx, OP_jmp);
1027 return E_OUTOFMEMORY;
1029 instr_ptr(ctx, jmp_else)->arg1.uint = ctx->code_off;
1031 if(stat->else_stat) {
1032 hres = compile_statement(ctx, NULL, stat->else_stat);
1036 /* FIXME: We could sometimes avoid it */
1037 if(!push_instr(ctx, OP_undefined))
1038 return E_OUTOFMEMORY;
1041 instr_ptr(ctx, jmp_end)->arg1.uint = ctx->code_off;
1045 /* ECMA-262 3rd Edition 12.6.2 */
1046 static HRESULT compile_while_statement(compiler_ctx_t *ctx, while_statement_t *stat)
1048 statement_ctx_t stat_ctx = {0, FALSE, FALSE};
1052 stat_ctx.break_label = alloc_label(ctx);
1053 if(!stat_ctx.break_label)
1054 return E_OUTOFMEMORY;
1056 stat_ctx.continue_label = alloc_label(ctx);
1057 if(!stat_ctx.continue_label)
1058 return E_OUTOFMEMORY;
1060 if(!stat->do_while) {
1062 if(!push_instr(ctx, OP_undefined))
1063 return E_OUTOFMEMORY;
1065 jmp_off = ctx->code_off;
1066 label_set_addr(ctx, stat_ctx.continue_label);
1067 hres = compile_expression(ctx, stat->expr);
1071 hres = push_instr_uint(ctx, OP_jmp_z, stat_ctx.break_label);
1075 if(!push_instr(ctx, OP_pop))
1076 return E_OUTOFMEMORY;
1078 jmp_off = ctx->code_off;
1081 hres = compile_statement(ctx, &stat_ctx, stat->statement);
1085 if(stat->do_while) {
1086 label_set_addr(ctx, stat_ctx.continue_label);
1087 hres = compile_expression(ctx, stat->expr);
1091 hres = push_instr_uint(ctx, OP_jmp_z, stat_ctx.break_label);
1095 if(!push_instr(ctx, OP_pop))
1096 return E_OUTOFMEMORY;
1099 hres = push_instr_uint(ctx, OP_jmp, jmp_off);
1103 label_set_addr(ctx, stat_ctx.break_label);
1107 /* ECMA-262 3rd Edition 12.6.3 */
1108 static HRESULT compile_for_statement(compiler_ctx_t *ctx, for_statement_t *stat)
1110 statement_ctx_t stat_ctx = {0, FALSE, FALSE};
1114 if(stat->variable_list) {
1115 hres = compile_variable_list(ctx, stat->variable_list);
1118 }else if(stat->begin_expr) {
1119 BOOL no_ret = FALSE;
1121 hres = compile_expression_noret(ctx, stat->begin_expr, &no_ret);
1124 if(!no_ret && !push_instr(ctx, OP_pop))
1125 return E_OUTOFMEMORY;
1128 stat_ctx.break_label = alloc_label(ctx);
1129 if(!stat_ctx.break_label)
1130 return E_OUTOFMEMORY;
1132 stat_ctx.continue_label = alloc_label(ctx);
1133 if(!stat_ctx.continue_label)
1134 return E_OUTOFMEMORY;
1137 if(!push_instr(ctx, OP_undefined))
1138 return E_OUTOFMEMORY;
1140 expr_off = ctx->code_off;
1143 hres = compile_expression(ctx, stat->expr);
1147 hres = push_instr_uint(ctx, OP_jmp_z, stat_ctx.break_label);
1152 if(!push_instr(ctx, OP_pop))
1153 return E_OUTOFMEMORY;
1155 hres = compile_statement(ctx, &stat_ctx, stat->statement);
1159 label_set_addr(ctx, stat_ctx.continue_label);
1161 if(stat->end_expr) {
1162 BOOL no_ret = FALSE;
1164 hres = compile_expression_noret(ctx, stat->end_expr, &no_ret);
1168 if(!no_ret && !push_instr(ctx, OP_pop))
1169 return E_OUTOFMEMORY;
1172 hres = push_instr_uint(ctx, OP_jmp, expr_off);
1176 label_set_addr(ctx, stat_ctx.break_label);
1180 /* ECMA-262 3rd Edition 12.6.4 */
1181 static HRESULT compile_forin_statement(compiler_ctx_t *ctx, forin_statement_t *stat)
1183 statement_ctx_t stat_ctx = {4, FALSE, FALSE};
1186 if(stat->variable) {
1187 hres = compile_variable_list(ctx, stat->variable);
1192 stat_ctx.break_label = alloc_label(ctx);
1193 if(!stat_ctx.break_label)
1194 return E_OUTOFMEMORY;
1196 stat_ctx.continue_label = alloc_label(ctx);
1197 if(!stat_ctx.continue_label)
1198 return E_OUTOFMEMORY;
1200 hres = compile_expression(ctx, stat->in_expr);
1204 if(stat->variable) {
1205 hres = push_instr_bstr_uint(ctx, OP_identid, stat->variable->identifier, fdexNameEnsure);
1208 }else if(is_memberid_expr(stat->expr->type)) {
1209 hres = compile_memberid_expression(ctx, stat->expr, fdexNameEnsure);
1213 hres = push_instr_uint(ctx, OP_throw_ref, JS_E_ILLEGAL_ASSIGN);
1217 /* FIXME: compile statement anyways when we depend on compiler to check errors */
1221 hres = push_instr_int(ctx, OP_int, DISPID_STARTENUM);
1226 if(!push_instr(ctx, OP_undefined))
1227 return E_OUTOFMEMORY;
1229 label_set_addr(ctx, stat_ctx.continue_label);
1230 hres = push_instr_uint(ctx, OP_forin, stat_ctx.break_label);
1232 return E_OUTOFMEMORY;
1234 hres = compile_statement(ctx, &stat_ctx, stat->statement);
1238 hres = push_instr_uint(ctx, OP_jmp, stat_ctx.continue_label);
1242 label_set_addr(ctx, stat_ctx.break_label);
1246 static HRESULT pop_to_stat(compiler_ctx_t *ctx, statement_ctx_t *stat_ctx)
1248 unsigned stack_pop = 0;
1249 statement_ctx_t *iter;
1251 for(iter = ctx->stat_ctx; iter != stat_ctx; iter = iter->next) {
1252 if(iter->using_scope && !push_instr(ctx, OP_pop_scope))
1253 return E_OUTOFMEMORY;
1254 if(iter->using_except && !push_instr(ctx, OP_pop_except))
1255 return E_OUTOFMEMORY;
1256 stack_pop += iter->stack_use;
1259 /* FIXME: optimize */
1260 while(stack_pop--) {
1261 if(!push_instr(ctx, OP_pop))
1262 return E_OUTOFMEMORY;
1268 /* ECMA-262 3rd Edition 12.7 */
1269 static HRESULT compile_continue_statement(compiler_ctx_t *ctx, branch_statement_t *stat)
1271 statement_ctx_t *pop_ctx;
1274 if(stat->identifier) {
1275 statement_t *label_stat;
1276 statement_ctx_t *iter;
1280 for(iter = ctx->stat_ctx; iter; iter = iter->next) {
1281 if(iter->continue_label)
1283 if(iter->labelled_stat && !strcmpW(iter->labelled_stat->identifier, stat->identifier))
1288 WARN("Label not found\n");
1289 return JS_E_LABEL_NOT_FOUND;
1292 /* Labelled continue are allowed only on loops */
1293 for(label_stat = iter->labelled_stat->statement;
1294 label_stat->type == STAT_LABEL;
1295 label_stat = ((labelled_statement_t*)label_stat)->statement);
1296 if(!is_loop_statement(label_stat->type)) {
1297 WARN("Label is not a loop\n");
1298 return JS_E_INVALID_CONTINUE;
1301 for(pop_ctx = ctx->stat_ctx; pop_ctx; pop_ctx = pop_ctx->next) {
1302 if(pop_ctx->continue_label)
1307 WARN("continue outside loop\n");
1308 return JS_E_INVALID_CONTINUE;
1312 hres = pop_to_stat(ctx, pop_ctx);
1316 if(!push_instr(ctx, OP_undefined))
1317 return E_OUTOFMEMORY;
1319 return push_instr_uint(ctx, OP_jmp, pop_ctx->continue_label);
1322 /* ECMA-262 3rd Edition 12.8 */
1323 static HRESULT compile_break_statement(compiler_ctx_t *ctx, branch_statement_t *stat)
1325 statement_ctx_t *pop_ctx;
1328 if(stat->identifier) {
1329 for(pop_ctx = ctx->stat_ctx; pop_ctx; pop_ctx = pop_ctx->next) {
1330 if(pop_ctx->labelled_stat && !strcmpW(pop_ctx->labelled_stat->identifier, stat->identifier)) {
1331 assert(pop_ctx->break_label);
1337 WARN("Label not found\n");
1338 return JS_E_LABEL_NOT_FOUND;
1341 for(pop_ctx = ctx->stat_ctx; pop_ctx; pop_ctx = pop_ctx->next) {
1342 if(pop_ctx->break_label && !pop_ctx->labelled_stat)
1347 WARN("Break outside loop\n");
1348 return JS_E_INVALID_BREAK;
1352 hres = pop_to_stat(ctx, pop_ctx->next);
1356 if(!push_instr(ctx, OP_undefined))
1357 return E_OUTOFMEMORY;
1359 return push_instr_uint(ctx, OP_jmp, pop_ctx->break_label);
1362 /* ECMA-262 3rd Edition 12.9 */
1363 static HRESULT compile_return_statement(compiler_ctx_t *ctx, expression_statement_t *stat)
1367 hres = pop_to_stat(ctx, NULL);
1372 hres = compile_expression(ctx, stat->expr);
1377 return push_instr(ctx, OP_ret) ? S_OK : E_OUTOFMEMORY;
1380 /* ECMA-262 3rd Edition 12.10 */
1381 static HRESULT compile_with_statement(compiler_ctx_t *ctx, with_statement_t *stat)
1383 statement_ctx_t stat_ctx = {0, TRUE, FALSE};
1386 hres = compile_expression(ctx, stat->expr);
1390 if(!push_instr(ctx, OP_push_scope))
1391 return E_OUTOFMEMORY;
1393 hres = compile_statement(ctx, &stat_ctx, stat->statement);
1397 if(!push_instr(ctx, OP_pop_scope))
1398 return E_OUTOFMEMORY;
1403 /* ECMA-262 3rd Edition 12.10 */
1404 static HRESULT compile_labelled_statement(compiler_ctx_t *ctx, labelled_statement_t *stat)
1406 statement_ctx_t stat_ctx = {0, FALSE, FALSE, 0, 0, stat}, *iter;
1409 for(iter = ctx->stat_ctx; iter; iter = iter->next) {
1410 if(iter->labelled_stat && !strcmpW(iter->labelled_stat->identifier, stat->identifier)) {
1411 WARN("Label %s redefined\n", debugstr_w(stat->identifier));
1412 return JS_E_LABEL_REDEFINED;
1416 /* Labelled breaks are allowed for any labelled statements, not only loops (violating spec) */
1417 stat_ctx.break_label = alloc_label(ctx);
1418 if(!stat_ctx.break_label)
1419 return E_OUTOFMEMORY;
1421 hres = compile_statement(ctx, &stat_ctx, stat->statement);
1425 label_set_addr(ctx, stat_ctx.break_label);
1429 /* ECMA-262 3rd Edition 12.13 */
1430 static HRESULT compile_switch_statement(compiler_ctx_t *ctx, switch_statement_t *stat)
1432 statement_ctx_t stat_ctx = {0, FALSE, FALSE};
1433 unsigned case_cnt = 0, *case_jmps, i, default_jmp;
1434 BOOL have_default = FALSE;
1435 statement_t *stat_iter;
1436 case_clausule_t *iter;
1439 hres = compile_expression(ctx, stat->expr);
1443 stat_ctx.break_label = alloc_label(ctx);
1444 if(!stat_ctx.break_label)
1445 return E_OUTOFMEMORY;
1447 for(iter = stat->case_list; iter; iter = iter->next) {
1452 case_jmps = heap_alloc(case_cnt * sizeof(*case_jmps));
1454 return E_OUTOFMEMORY;
1457 for(iter = stat->case_list; iter; iter = iter->next) {
1459 have_default = TRUE;
1463 hres = compile_expression(ctx, iter->expr);
1467 case_jmps[i] = push_instr(ctx, OP_case);
1469 hres = E_OUTOFMEMORY;
1475 if(SUCCEEDED(hres)) {
1476 if(push_instr(ctx, OP_pop)) {
1477 default_jmp = push_instr(ctx, OP_jmp);
1479 hres = E_OUTOFMEMORY;
1481 hres = E_OUTOFMEMORY;
1486 heap_free(case_jmps);
1491 for(iter = stat->case_list; iter; iter = iter->next) {
1492 while(iter->next && iter->next->stat == iter->stat) {
1493 instr_ptr(ctx, iter->expr ? case_jmps[i++] : default_jmp)->arg1.uint = ctx->code_off;
1497 instr_ptr(ctx, iter->expr ? case_jmps[i++] : default_jmp)->arg1.uint = ctx->code_off;
1499 for(stat_iter = iter->stat; stat_iter && (!iter->next || iter->next->stat != stat_iter); stat_iter = stat_iter->next) {
1500 hres = compile_statement(ctx, &stat_ctx, stat_iter);
1504 if(stat_iter->next && !push_instr(ctx, OP_pop)) {
1505 hres = E_OUTOFMEMORY;
1513 heap_free(case_jmps);
1516 assert(i == case_cnt);
1519 instr_ptr(ctx, default_jmp)->arg1.uint = ctx->code_off;
1521 label_set_addr(ctx, stat_ctx.break_label);
1525 /* ECMA-262 3rd Edition 12.13 */
1526 static HRESULT compile_throw_statement(compiler_ctx_t *ctx, expression_statement_t *stat)
1530 hres = compile_expression(ctx, stat->expr);
1534 return push_instr(ctx, OP_throw) ? S_OK : E_OUTOFMEMORY;
1537 /* ECMA-262 3rd Edition 12.14 */
1538 static HRESULT compile_try_statement(compiler_ctx_t *ctx, try_statement_t *stat)
1540 statement_ctx_t try_ctx = {0, FALSE, TRUE}, catch_ctx = {0, TRUE, FALSE};
1541 statement_ctx_t finally_ctx = {2, FALSE, FALSE};
1542 unsigned push_except;
1546 push_except = push_instr(ctx, OP_push_except);
1548 return E_OUTOFMEMORY;
1550 if(stat->catch_block) {
1551 ident = compiler_alloc_bstr(ctx, stat->catch_block->identifier);
1553 return E_OUTOFMEMORY;
1558 instr_ptr(ctx, push_except)->arg2.bstr = ident;
1560 if(!stat->catch_block)
1561 try_ctx.stack_use = 2;
1563 hres = compile_statement(ctx, &try_ctx, stat->try_statement);
1567 if(!push_instr(ctx, OP_pop_except))
1568 return E_OUTOFMEMORY;
1570 if(stat->catch_block) {
1571 unsigned jmp_finally;
1573 jmp_finally = push_instr(ctx, OP_jmp);
1575 return E_OUTOFMEMORY;
1577 instr_ptr(ctx, push_except)->arg1.uint = ctx->code_off;
1579 hres = compile_statement(ctx, &catch_ctx, stat->catch_block->statement);
1583 if(!push_instr(ctx, OP_pop_scope))
1584 return E_OUTOFMEMORY;
1586 instr_ptr(ctx, jmp_finally)->arg1.uint = ctx->code_off;
1588 instr_ptr(ctx, push_except)->arg1.uint = ctx->code_off;
1591 if(stat->finally_statement) {
1593 if(!push_instr(ctx, OP_pop))
1594 return E_OUTOFMEMORY;
1596 hres = compile_statement(ctx, stat->catch_block ? NULL : &finally_ctx, stat->finally_statement);
1600 if(!stat->catch_block && !push_instr(ctx, OP_end_finally))
1601 return E_OUTOFMEMORY;
1607 static HRESULT compile_statement(compiler_ctx_t *ctx, statement_ctx_t *stat_ctx, statement_t *stat)
1612 stat_ctx->next = ctx->stat_ctx;
1613 ctx->stat_ctx = stat_ctx;
1616 switch(stat->type) {
1618 hres = compile_block_statement(ctx, ((block_statement_t*)stat)->stat_list);
1621 hres = compile_break_statement(ctx, (branch_statement_t*)stat);
1624 hres = compile_continue_statement(ctx, (branch_statement_t*)stat);
1627 hres = push_instr(ctx, OP_undefined) ? S_OK : E_OUTOFMEMORY; /* FIXME */
1630 hres = compile_expression_statement(ctx, (expression_statement_t*)stat);
1633 hres = compile_for_statement(ctx, (for_statement_t*)stat);
1636 hres = compile_forin_statement(ctx, (forin_statement_t*)stat);
1639 hres = compile_if_statement(ctx, (if_statement_t*)stat);
1642 hres = compile_labelled_statement(ctx, (labelled_statement_t*)stat);
1645 hres = compile_return_statement(ctx, (expression_statement_t*)stat);
1648 hres = compile_switch_statement(ctx, (switch_statement_t*)stat);
1651 hres = compile_throw_statement(ctx, (expression_statement_t*)stat);
1654 hres = compile_try_statement(ctx, (try_statement_t*)stat);
1657 hres = compile_var_statement(ctx, (var_statement_t*)stat);
1660 hres = compile_while_statement(ctx, (while_statement_t*)stat);
1663 hres = compile_with_statement(ctx, (with_statement_t*)stat);
1671 assert(ctx->stat_ctx == stat_ctx);
1672 ctx->stat_ctx = stat_ctx->next;
1678 static void resolve_labels(compiler_ctx_t *ctx, unsigned off)
1682 for(instr = ctx->code->instrs+off; instr < ctx->code->instrs+ctx->code_off; instr++) {
1683 if(instr_info[instr->op].arg1_type == ARG_ADDR && (instr->arg1.uint & LABEL_FLAG)) {
1684 assert((instr->arg1.uint & ~LABEL_FLAG) < ctx->labels_cnt);
1685 instr->arg1.uint = ctx->labels[instr->arg1.uint & ~LABEL_FLAG];
1687 assert(instr_info[instr->op].arg2_type != ARG_ADDR);
1690 ctx->labels_cnt = 0;
1693 void release_bytecode(bytecode_t *code)
1697 for(i=0; i < code->bstr_cnt; i++)
1698 SysFreeString(code->bstr_pool[i]);
1700 jsheap_free(&code->heap);
1701 heap_free(code->bstr_pool);
1702 heap_free(code->instrs);
1706 void release_compiler(compiler_ctx_t *ctx)
1711 static HRESULT init_compiler(parser_ctx_t *parser)
1713 compiler_ctx_t *compiler;
1715 if(parser->compiler)
1718 compiler = heap_alloc_zero(sizeof(*compiler));
1720 return E_OUTOFMEMORY;
1722 compiler->code = heap_alloc_zero(sizeof(bytecode_t));
1723 if(!compiler->code) {
1724 release_compiler(compiler);
1725 return E_OUTOFMEMORY;
1728 jsheap_init(&compiler->code->heap);
1730 compiler->code->instrs = heap_alloc(64 * sizeof(instr_t));
1731 if(!compiler->code->instrs) {
1732 release_bytecode(compiler->code);
1733 release_compiler(compiler);
1734 return E_OUTOFMEMORY;
1737 compiler->code_size = 64;
1738 compiler->code_off = 1;
1740 compiler->parser = parser;
1742 parser->code = compiler->code;
1743 parser->compiler = compiler;
1747 HRESULT compile_subscript_stat(parser_ctx_t *parser, statement_t *stat, BOOL from_eval, unsigned *ret_off)
1754 hres = init_compiler(parser);
1758 off = parser->compiler->code_off;
1760 hres = compile_block_statement(parser->compiler, stat);
1762 hres = compile_statement(parser->compiler, NULL, stat);
1766 resolve_labels(parser->compiler, off);
1768 if(!from_eval && !push_instr(parser->compiler, OP_pop))
1769 return E_OUTOFMEMORY;
1770 if(!push_instr(parser->compiler, OP_ret))
1771 return E_OUTOFMEMORY;
1773 if(TRACE_ON(jscript_disas))
1774 dump_code(parser->compiler, off);