1 : /*
2 : +----------------------------------------------------------------------+
3 : | Zend Engine |
4 : +----------------------------------------------------------------------+
5 : | Copyright (c) 1998-2007 Zend Technologies Ltd. (http://www.zend.com) |
6 : +----------------------------------------------------------------------+
7 : | This source file is subject to version 2.00 of the Zend license, |
8 : | that is bundled with this package in the file LICENSE, and is |
9 : | available through the world-wide-web at the following url: |
10 : | http://www.zend.com/license/2_00.txt. |
11 : | If you did not receive a copy of the Zend license and are unable to |
12 : | obtain it through the world-wide-web, please send a note to |
13 : | license@zend.com so we can mail you a copy immediately. |
14 : +----------------------------------------------------------------------+
15 : | Authors: Andi Gutmans <andi@zend.com> |
16 : | Zeev Suraski <zeev@zend.com> |
17 : +----------------------------------------------------------------------+
18 : */
19 :
20 : /* $Id: zend_execute.h,v 1.84.2.4.2.6 2007/01/10 15:58:07 dmitry Exp $ */
21 :
22 : #ifndef ZEND_EXECUTE_H
23 : #define ZEND_EXECUTE_H
24 :
25 : #include "zend_compile.h"
26 : #include "zend_hash.h"
27 : #include "zend_operators.h"
28 : #include "zend_variables.h"
29 :
30 : typedef union _temp_variable {
31 : zval tmp_var;
32 : struct {
33 : zval **ptr_ptr;
34 : zval *ptr;
35 : zend_bool fcall_returned_reference;
36 : } var;
37 : struct {
38 : zval **ptr_ptr;
39 : zval *ptr;
40 : zend_bool fcall_returned_reference;
41 : zval *str;
42 : zend_uint offset;
43 : } str_offset;
44 : struct {
45 : zval **ptr_ptr;
46 : zval *ptr;
47 : zend_bool fcall_returned_reference;
48 : HashPointer fe_pos;
49 : } fe;
50 : zend_class_entry *class_entry;
51 : } temp_variable;
52 :
53 :
54 : BEGIN_EXTERN_C()
55 : ZEND_API extern void (*zend_execute)(zend_op_array *op_array TSRMLS_DC);
56 : ZEND_API extern void (*zend_execute_internal)(zend_execute_data *execute_data_ptr, int return_value_used TSRMLS_DC);
57 :
58 : void init_executor(TSRMLS_D);
59 : void shutdown_executor(TSRMLS_D);
60 : void shutdown_destructors(TSRMLS_D);
61 : ZEND_API void execute(zend_op_array *op_array TSRMLS_DC);
62 : ZEND_API void execute_internal(zend_execute_data *execute_data_ptr, int return_value_used TSRMLS_DC);
63 : ZEND_API int zend_is_true(zval *op);
64 : #define safe_free_zval_ptr(p) safe_free_zval_ptr_rel(p ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC)
65 : static inline void safe_free_zval_ptr_rel(zval *p ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
66 231207 : {
67 : TSRMLS_FETCH();
68 :
69 231207 : if (p!=EG(uninitialized_zval_ptr)) {
70 231207 : FREE_ZVAL_REL(p);
71 : }
72 231207 : }
73 : ZEND_API int zend_lookup_class(char *name, int name_length, zend_class_entry ***ce TSRMLS_DC);
74 : ZEND_API int zend_lookup_class_ex(char *name, int name_length, int use_autoload, zend_class_entry ***ce TSRMLS_DC);
75 : ZEND_API int zend_eval_string(char *str, zval *retval_ptr, char *string_name TSRMLS_DC);
76 : ZEND_API int zend_eval_string_ex(char *str, zval *retval_ptr, char *string_name, int handle_exceptions TSRMLS_DC);
77 :
78 : static inline int i_zend_is_true(zval *op)
79 231667 : {
80 : int result;
81 :
82 231667 : switch (Z_TYPE_P(op)) {
83 : case IS_NULL:
84 332 : result = 0;
85 332 : break;
86 : case IS_LONG:
87 : case IS_BOOL:
88 : case IS_RESOURCE:
89 229973 : result = (Z_LVAL_P(op)?1:0);
90 229973 : break;
91 : case IS_DOUBLE:
92 0 : result = (Z_DVAL_P(op) ? 1 : 0);
93 0 : break;
94 : case IS_STRING:
95 2068 : if (Z_STRLEN_P(op) == 0
96 : || (Z_STRLEN_P(op)==1 && Z_STRVAL_P(op)[0]=='0')) {
97 763 : result = 0;
98 : } else {
99 542 : result = 1;
100 : }
101 1305 : break;
102 : case IS_ARRAY:
103 47 : result = (zend_hash_num_elements(Z_ARRVAL_P(op))?1:0);
104 47 : break;
105 : case IS_OBJECT:
106 10 : if(IS_ZEND_STD_OBJECT(*op)) {
107 : TSRMLS_FETCH();
108 :
109 10 : if (Z_OBJ_HT_P(op)->cast_object) {
110 : zval tmp;
111 10 : if (Z_OBJ_HT_P(op)->cast_object(op, &tmp, IS_BOOL TSRMLS_CC) == SUCCESS) {
112 10 : result = Z_LVAL(tmp);
113 10 : break;
114 : }
115 0 : } else if (Z_OBJ_HT_P(op)->get) {
116 0 : zval *tmp = Z_OBJ_HT_P(op)->get(op TSRMLS_CC);
117 0 : if(Z_TYPE_P(tmp) != IS_OBJECT) {
118 : /* for safety - avoid loop */
119 0 : convert_to_boolean(tmp);
120 0 : result = Z_LVAL_P(tmp);
121 0 : zval_ptr_dtor(&tmp);
122 0 : break;
123 : }
124 : }
125 :
126 0 : if(EG(ze1_compatibility_mode)) {
127 0 : result = (zend_hash_num_elements(Z_OBJPROP_P(op))?1:0);
128 : } else {
129 0 : result = 1;
130 : }
131 : } else {
132 0 : result = 1;
133 : }
134 0 : break;
135 : default:
136 0 : result = 0;
137 : break;
138 : }
139 231667 : return result;
140 : }
141 :
142 : ZEND_API int zval_update_constant(zval **pp, void *arg TSRMLS_DC);
143 : ZEND_API int zval_update_constant_ex(zval **pp, void *arg, zend_class_entry *scope TSRMLS_DC);
144 :
145 : /* dedicated Zend executor functions - do not use! */
146 : static inline void zend_ptr_stack_clear_multiple(TSRMLS_D)
147 111927 : {
148 111927 : void **p = EG(argument_stack).top_element-2;
149 111927 : int delete_count = (ulong) *p;
150 :
151 111927 : EG(argument_stack).top -= (delete_count+2);
152 509267 : while (--delete_count>=0) {
153 285413 : zval *q = *(zval **)(--p);
154 285413 : *p = NULL;
155 285413 : zval_ptr_dtor(&q);
156 : }
157 111927 : EG(argument_stack).top_element = p;
158 111927 : }
159 :
160 : static inline int zend_ptr_stack_get_arg(int requested_arg, void **data TSRMLS_DC)
161 149365 : {
162 149365 : void **p = EG(argument_stack).top_element-2;
163 149365 : int arg_count = (ulong) *p;
164 :
165 149365 : if (requested_arg>arg_count) {
166 116 : return FAILURE;
167 : }
168 149249 : *data = (p-arg_count+requested_arg-1);
169 149249 : return SUCCESS;
170 : }
171 :
172 : void execute_new_code(TSRMLS_D);
173 :
174 :
175 : /* services */
176 : ZEND_API char *get_active_class_name(char **space TSRMLS_DC);
177 : ZEND_API char *get_active_function_name(TSRMLS_D);
178 : ZEND_API char *zend_get_executed_filename(TSRMLS_D);
179 : ZEND_API uint zend_get_executed_lineno(TSRMLS_D);
180 : ZEND_API zend_bool zend_is_executing(TSRMLS_D);
181 :
182 : ZEND_API void zend_set_timeout(long seconds);
183 : ZEND_API void zend_unset_timeout(TSRMLS_D);
184 : ZEND_API void zend_timeout(int dummy);
185 : ZEND_API zend_class_entry *zend_fetch_class(char *class_name, uint class_name_len, int fetch_type TSRMLS_DC);
186 : void zend_verify_abstract_class(zend_class_entry *ce TSRMLS_DC);
187 :
188 : #ifdef ZEND_WIN32
189 : void zend_init_timeout_thread();
190 : void zend_shutdown_timeout_thread();
191 : #define WM_REGISTER_ZEND_TIMEOUT (WM_USER+1)
192 : #define WM_UNREGISTER_ZEND_TIMEOUT (WM_USER+2)
193 : #endif
194 :
195 : #define zendi_zval_copy_ctor(p) zval_copy_ctor(&(p))
196 : #define zendi_zval_dtor(p) zval_dtor(&(p))
197 :
198 : #define active_opline (*EG(opline_ptr))
199 :
200 : /* The following tries to resolve the classname of a zval of type object.
201 : * Since it is slow it should be only used in error messages.
202 : */
203 : #define Z_OBJ_CLASS_NAME_P(zval) ((zval) && Z_TYPE_P(zval) == IS_OBJECT && Z_OBJ_HT_P(zval)->get_class_entry != NULL && Z_OBJ_HT_P(zval)->get_class_entry(zval TSRMLS_CC) ? Z_OBJ_HT_P(zval)->get_class_entry(zval TSRMLS_CC)->name : "")
204 :
205 : ZEND_API zval** zend_get_compiled_variable_value(zend_execute_data *execute_data_ptr, zend_uint var);
206 :
207 : #define ZEND_USER_OPCODE_CONTINUE 0 /* execute next opcode */
208 : #define ZEND_USER_OPCODE_RETURN 1 /* exit from executor (return from function) */
209 : #define ZEND_USER_OPCODE_DISPATCH 2 /* call original opcode handler */
210 :
211 : #define ZEND_USER_OPCODE_DISPATCH_TO 0x100 /* call original handler of returned opcode */
212 :
213 : ZEND_API int zend_set_user_opcode_handler(zend_uchar opcode, opcode_handler_t handler);
214 : ZEND_API opcode_handler_t zend_get_user_opcode_handler(zend_uchar opcode);
215 :
216 : /* former zend_execute_locks.h */
217 : typedef struct _zend_free_op {
218 : zval* var;
219 : /* int is_var; */
220 : } zend_free_op;
221 :
222 : ZEND_API zval *zend_get_zval_ptr(znode *node, temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC);
223 : ZEND_API zval **zend_get_zval_ptr_ptr(znode *node, temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC);
224 :
225 : ZEND_API int zend_do_fcall(ZEND_OPCODE_HANDLER_ARGS);
226 :
227 : END_EXTERN_C()
228 :
229 : #endif /* ZEND_EXECUTE_H */
230 :
231 : /*
232 : * Local variables:
233 : * tab-width: 4
234 : * c-basic-offset: 4
235 : * indent-tabs-mode: t
236 : * End:
237 : */
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