1 : /*
2 : +----------------------------------------------------------------------+
3 : | Zend Engine |
4 : +----------------------------------------------------------------------+
5 : | Copyright (c) 1998-2009 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_operators.h 281670 2009-06-04 18:20:45Z mattwil $ */
21 :
22 : #ifndef ZEND_OPERATORS_H
23 : #define ZEND_OPERATORS_H
24 :
25 : #include <errno.h>
26 : #include <math.h>
27 : #include <assert.h>
28 :
29 : #ifdef HAVE_IEEEFP_H
30 : #include <ieeefp.h>
31 : #endif
32 :
33 : #include "zend_strtod.h"
34 :
35 : #if 0&&HAVE_BCMATH
36 : #include "ext/bcmath/libbcmath/src/bcmath.h"
37 : #endif
38 :
39 : BEGIN_EXTERN_C()
40 : ZEND_API int add_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
41 : ZEND_API int sub_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
42 : ZEND_API int mul_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
43 : ZEND_API int div_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
44 : ZEND_API int mod_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
45 : ZEND_API int boolean_xor_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
46 : ZEND_API int boolean_not_function(zval *result, zval *op1 TSRMLS_DC);
47 : ZEND_API int bitwise_not_function(zval *result, zval *op1 TSRMLS_DC);
48 : ZEND_API int bitwise_or_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
49 : ZEND_API int bitwise_and_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
50 : ZEND_API int bitwise_xor_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
51 : ZEND_API int shift_left_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
52 : ZEND_API int shift_right_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
53 : ZEND_API int concat_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
54 :
55 : ZEND_API int is_equal_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
56 : ZEND_API int is_identical_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
57 : ZEND_API int is_not_identical_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
58 : ZEND_API int is_not_equal_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
59 : ZEND_API int is_smaller_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
60 : ZEND_API int is_smaller_or_equal_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
61 :
62 : ZEND_API zend_bool instanceof_function_ex(const zend_class_entry *instance_ce, const zend_class_entry *ce, zend_bool interfaces_only TSRMLS_DC);
63 : ZEND_API zend_bool instanceof_function(const zend_class_entry *instance_ce, const zend_class_entry *ce TSRMLS_DC);
64 : END_EXTERN_C()
65 :
66 : #if ZEND_DVAL_TO_LVAL_CAST_OK
67 : # define zend_dval_to_lval(d) ((long) (d))
68 : #elif SIZEOF_LONG == 4 && defined(HAVE_ZEND_LONG64)
69 : static zend_always_inline long zend_dval_to_lval(double d)
70 0 : {
71 0 : if (d > LONG_MAX || d < LONG_MIN) {
72 0 : return (long)(unsigned long)(zend_long64) d;
73 : }
74 0 : return (long) d;
75 : }
76 : #else
77 : static zend_always_inline long zend_dval_to_lval(double d)
78 : {
79 : if (d > LONG_MAX) {
80 : return (long)(unsigned long) d;
81 : }
82 : return (long) d;
83 : }
84 : #endif
85 : /* }}} */
86 :
87 : #define ZEND_IS_DIGIT(c) ((c) >= '0' && (c) <= '9')
88 : #define ZEND_IS_XDIGIT(c) (((c) >= 'A' && (c) <= 'F') || ((c) >= 'a' && (c) <= 'f'))
89 :
90 : /**
91 : * Checks whether the string "str" with length "length" is numeric. The value
92 : * of allow_errors determines whether it's required to be entirely numeric, or
93 : * just its prefix. Leading whitespace is allowed.
94 : *
95 : * The function returns 0 if the string did not contain a valid number; IS_LONG
96 : * if it contained a number that fits within the range of a long; or IS_DOUBLE
97 : * if the number was out of long range or contained a decimal point/exponent.
98 : * The number's value is returned into the respective pointer, *lval or *dval,
99 : * if that pointer is not NULL.
100 : */
101 :
102 : static inline zend_uchar is_numeric_string(const char *str, int length, long *lval, double *dval, int allow_errors)
103 0 : {
104 : const char *ptr;
105 0 : int base = 10, digits = 0, dp_or_e = 0;
106 : double local_dval;
107 : zend_uchar type;
108 :
109 0 : if (!length) {
110 0 : return 0;
111 : }
112 :
113 : /* Skip any whitespace
114 : * This is much faster than the isspace() function */
115 0 : while (*str == ' ' || *str == '\t' || *str == '\n' || *str == '\r' || *str == '\v' || *str == '\f') {
116 0 : str++;
117 0 : length--;
118 : }
119 0 : ptr = str;
120 :
121 0 : if (*ptr == '-' || *ptr == '+') {
122 0 : ptr++;
123 : }
124 :
125 0 : if (ZEND_IS_DIGIT(*ptr)) {
126 : /* Handle hex numbers
127 : * str is used instead of ptr to disallow signs and keep old behavior */
128 0 : if (length > 2 && *str == '0' && (str[1] == 'x' || str[1] == 'X')) {
129 0 : base = 16;
130 0 : ptr += 2;
131 : }
132 :
133 : /* Skip any leading 0s */
134 0 : while (*ptr == '0') {
135 0 : ptr++;
136 : }
137 :
138 : /* Count the number of digits. If a decimal point/exponent is found,
139 : * it's a double. Otherwise, if there's a dval or no need to check for
140 : * a full match, stop when there are too many digits for a long */
141 0 : for (type = IS_LONG; !(digits >= MAX_LENGTH_OF_LONG && (dval || allow_errors == 1)); digits++, ptr++) {
142 0 : check_digits:
143 0 : if (ZEND_IS_DIGIT(*ptr) || (base == 16 && ZEND_IS_XDIGIT(*ptr))) {
144 : continue;
145 0 : } else if (base == 10) {
146 0 : if (*ptr == '.' && dp_or_e < 1) {
147 : goto process_double;
148 0 : } else if ((*ptr == 'e' || *ptr == 'E') && dp_or_e < 2) {
149 0 : const char *e = ptr + 1;
150 :
151 0 : if (*e == '-' || *e == '+') {
152 0 : ptr = e++;
153 : }
154 0 : if (ZEND_IS_DIGIT(*e)) {
155 0 : goto process_double;
156 : }
157 : }
158 : }
159 :
160 0 : break;
161 : }
162 :
163 0 : if (base == 10) {
164 0 : if (digits >= MAX_LENGTH_OF_LONG) {
165 0 : dp_or_e = -1;
166 0 : goto process_double;
167 : }
168 0 : } else if (!(digits < SIZEOF_LONG * 2 || (digits == SIZEOF_LONG * 2 && ptr[-digits] <= '7'))) {
169 0 : if (dval) {
170 0 : local_dval = zend_hex_strtod(str, (char **)&ptr);
171 : }
172 0 : type = IS_DOUBLE;
173 : }
174 0 : } else if (*ptr == '.' && ZEND_IS_DIGIT(ptr[1])) {
175 0 : process_double:
176 0 : type = IS_DOUBLE;
177 :
178 : /* If there's a dval, do the conversion; else continue checking
179 : * the digits if we need to check for a full match */
180 0 : if (dval) {
181 0 : local_dval = zend_strtod(str, (char **)&ptr);
182 0 : } else if (allow_errors != 1 && dp_or_e != -1) {
183 0 : dp_or_e = (*ptr++ == '.') ? 1 : 2;
184 0 : goto check_digits;
185 : }
186 : } else {
187 0 : return 0;
188 : }
189 :
190 0 : if (ptr != str + length) {
191 0 : if (!allow_errors) {
192 0 : return 0;
193 : }
194 0 : if (allow_errors == -1) {
195 0 : zend_error(E_NOTICE, "A non well formed numeric value encountered");
196 : }
197 : }
198 :
199 0 : if (type == IS_LONG) {
200 0 : if (digits == MAX_LENGTH_OF_LONG - 1) {
201 0 : int cmp = strcmp(&ptr[-digits], long_min_digits);
202 :
203 0 : if (!(cmp < 0 || (cmp == 0 && *str == '-'))) {
204 0 : if (dval) {
205 0 : *dval = zend_strtod(str, NULL);
206 : }
207 :
208 0 : return IS_DOUBLE;
209 : }
210 : }
211 :
212 0 : if (lval) {
213 0 : *lval = strtol(str, NULL, base);
214 : }
215 :
216 0 : return IS_LONG;
217 : } else {
218 0 : if (dval) {
219 0 : *dval = local_dval;
220 : }
221 :
222 0 : return IS_DOUBLE;
223 : }
224 : }
225 :
226 : static inline char *
227 : zend_memnstr(char *haystack, char *needle, int needle_len, char *end)
228 0 : {
229 0 : char *p = haystack;
230 0 : char ne = needle[needle_len-1];
231 :
232 0 : if (needle_len == 1) {
233 0 : return (char *)memchr(p, *needle, (end-p));
234 : }
235 :
236 0 : if (needle_len > end-haystack) {
237 0 : return NULL;
238 : }
239 :
240 0 : end -= needle_len;
241 :
242 0 : while (p <= end) {
243 0 : if ((p = (char *)memchr(p, *needle, (end-p+1))) && ne == p[needle_len-1]) {
244 0 : if (!memcmp(needle, p, needle_len-1)) {
245 0 : return p;
246 : }
247 : }
248 :
249 0 : if (p == NULL) {
250 0 : return NULL;
251 : }
252 :
253 0 : p++;
254 : }
255 :
256 0 : return NULL;
257 : }
258 :
259 : static inline void *zend_memrchr(const void *s, int c, size_t n)
260 0 : {
261 : register unsigned char *e;
262 :
263 0 : if (n <= 0) {
264 0 : return NULL;
265 : }
266 :
267 0 : for (e = (unsigned char *)s + n - 1; e >= (unsigned char *)s; e--) {
268 0 : if (*e == (unsigned char)c) {
269 0 : return (void *)e;
270 : }
271 : }
272 :
273 0 : return NULL;
274 : }
275 :
276 : BEGIN_EXTERN_C()
277 : ZEND_API int increment_function(zval *op1);
278 : ZEND_API int decrement_function(zval *op2);
279 :
280 : ZEND_API void convert_scalar_to_number(zval *op TSRMLS_DC);
281 : ZEND_API void _convert_to_string(zval *op ZEND_FILE_LINE_DC);
282 : ZEND_API void convert_to_long(zval *op);
283 : ZEND_API void convert_to_double(zval *op);
284 : ZEND_API void convert_to_long_base(zval *op, int base);
285 : ZEND_API void convert_to_null(zval *op);
286 : ZEND_API void convert_to_boolean(zval *op);
287 : ZEND_API void convert_to_array(zval *op);
288 : ZEND_API void convert_to_object(zval *op);
289 : ZEND_API void multi_convert_to_long_ex(int argc, ...);
290 : ZEND_API void multi_convert_to_double_ex(int argc, ...);
291 : ZEND_API void multi_convert_to_string_ex(int argc, ...);
292 : ZEND_API int add_char_to_string(zval *result, const zval *op1, const zval *op2);
293 : ZEND_API int add_string_to_string(zval *result, const zval *op1, const zval *op2);
294 : #define convert_to_string(op) if ((op)->type != IS_STRING) { _convert_to_string((op) ZEND_FILE_LINE_CC); }
295 :
296 : ZEND_API double zend_string_to_double(const char *number, zend_uint length);
297 :
298 : ZEND_API int zval_is_true(zval *op);
299 : ZEND_API int compare_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
300 : ZEND_API int numeric_compare_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
301 : ZEND_API int string_compare_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
302 : #if HAVE_STRCOLL
303 : ZEND_API int string_locale_compare_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);
304 : #endif
305 :
306 : ZEND_API void zend_str_tolower(char *str, unsigned int length);
307 : ZEND_API char *zend_str_tolower_copy(char *dest, const char *source, unsigned int length);
308 : ZEND_API char *zend_str_tolower_dup(const char *source, unsigned int length);
309 :
310 : ZEND_API int zend_binary_zval_strcmp(zval *s1, zval *s2);
311 : ZEND_API int zend_binary_zval_strncmp(zval *s1, zval *s2, zval *s3);
312 : ZEND_API int zend_binary_zval_strcasecmp(zval *s1, zval *s2);
313 : ZEND_API int zend_binary_zval_strncasecmp(zval *s1, zval *s2, zval *s3);
314 : ZEND_API int zend_binary_strcmp(const char *s1, uint len1, const char *s2, uint len2);
315 : ZEND_API int zend_binary_strncmp(const char *s1, uint len1, const char *s2, uint len2, uint length);
316 : ZEND_API int zend_binary_strcasecmp(const char *s1, uint len1, const char *s2, uint len2);
317 : ZEND_API int zend_binary_strncasecmp(const char *s1, uint len1, const char *s2, uint len2, uint length);
318 :
319 : ZEND_API void zendi_smart_strcmp(zval *result, zval *s1, zval *s2);
320 : ZEND_API void zend_compare_symbol_tables(zval *result, HashTable *ht1, HashTable *ht2 TSRMLS_DC);
321 : ZEND_API void zend_compare_arrays(zval *result, zval *a1, zval *a2 TSRMLS_DC);
322 : ZEND_API void zend_compare_objects(zval *result, zval *o1, zval *o2 TSRMLS_DC);
323 :
324 : ZEND_API int zend_atoi(const char *str, int str_len);
325 : ZEND_API long zend_atol(const char *str, int str_len);
326 :
327 : ZEND_API void zend_locale_sprintf_double(zval *op ZEND_FILE_LINE_DC);
328 : END_EXTERN_C()
329 :
330 : #define convert_to_ex_master(ppzv, lower_type, upper_type) \
331 : if (Z_TYPE_PP(ppzv)!=IS_##upper_type) { \
332 : SEPARATE_ZVAL_IF_NOT_REF(ppzv); \
333 : convert_to_##lower_type(*ppzv); \
334 : }
335 :
336 : #define convert_to_explicit_type(pzv, type) \
337 : do { \
338 : switch (type) { \
339 : case IS_NULL: \
340 : convert_to_null(pzv); \
341 : break; \
342 : case IS_LONG: \
343 : convert_to_long(pzv); \
344 : break; \
345 : case IS_DOUBLE: \
346 : convert_to_double(pzv); \
347 : break; \
348 : case IS_BOOL: \
349 : convert_to_boolean(pzv); \
350 : break; \
351 : case IS_ARRAY: \
352 : convert_to_array(pzv); \
353 : break; \
354 : case IS_OBJECT: \
355 : convert_to_object(pzv); \
356 : break; \
357 : case IS_STRING: \
358 : convert_to_string(pzv); \
359 : break; \
360 : default: \
361 : assert(0); \
362 : break; \
363 : } \
364 : } while (0);
365 :
366 : #define convert_to_explicit_type_ex(ppzv, str_type) \
367 : if (Z_TYPE_PP(ppzv) != str_type) { \
368 : SEPARATE_ZVAL_IF_NOT_REF(ppzv); \
369 : convert_to_explicit_type(*ppzv, str_type); \
370 : }
371 :
372 : #define convert_to_boolean_ex(ppzv) convert_to_ex_master(ppzv, boolean, BOOL)
373 : #define convert_to_long_ex(ppzv) convert_to_ex_master(ppzv, long, LONG)
374 : #define convert_to_double_ex(ppzv) convert_to_ex_master(ppzv, double, DOUBLE)
375 : #define convert_to_string_ex(ppzv) convert_to_ex_master(ppzv, string, STRING)
376 : #define convert_to_array_ex(ppzv) convert_to_ex_master(ppzv, array, ARRAY)
377 : #define convert_to_object_ex(ppzv) convert_to_ex_master(ppzv, object, OBJECT)
378 : #define convert_to_null_ex(ppzv) convert_to_ex_master(ppzv, null, NULL)
379 :
380 : #define convert_scalar_to_number_ex(ppzv) \
381 : if (Z_TYPE_PP(ppzv)!=IS_LONG && Z_TYPE_PP(ppzv)!=IS_DOUBLE) { \
382 : if (!Z_ISREF_PP(ppzv)) { \
383 : SEPARATE_ZVAL(ppzv); \
384 : } \
385 : convert_scalar_to_number(*ppzv TSRMLS_CC); \
386 : }
387 :
388 :
389 : #define Z_LVAL(zval) (zval).value.lval
390 : #define Z_BVAL(zval) ((zend_bool)(zval).value.lval)
391 : #define Z_DVAL(zval) (zval).value.dval
392 : #define Z_STRVAL(zval) (zval).value.str.val
393 : #define Z_STRLEN(zval) (zval).value.str.len
394 : #define Z_ARRVAL(zval) (zval).value.ht
395 : #define Z_OBJVAL(zval) (zval).value.obj
396 : #define Z_OBJ_HANDLE(zval) Z_OBJVAL(zval).handle
397 : #define Z_OBJ_HT(zval) Z_OBJVAL(zval).handlers
398 : #define Z_OBJCE(zval) zend_get_class_entry(&(zval) TSRMLS_CC)
399 : #define Z_OBJPROP(zval) Z_OBJ_HT((zval))->get_properties(&(zval) TSRMLS_CC)
400 : #define Z_OBJ_HANDLER(zval, hf) Z_OBJ_HT((zval))->hf
401 : #define Z_RESVAL(zval) (zval).value.lval
402 : #define Z_OBJDEBUG(zval,is_tmp) (Z_OBJ_HANDLER((zval),get_debug_info)?Z_OBJ_HANDLER((zval),get_debug_info)(&(zval),&is_tmp TSRMLS_CC):(is_tmp=0,Z_OBJ_HANDLER((zval),get_properties)?Z_OBJPROP(zval):NULL))
403 :
404 : #define Z_LVAL_P(zval_p) Z_LVAL(*zval_p)
405 : #define Z_BVAL_P(zval_p) Z_BVAL(*zval_p)
406 : #define Z_DVAL_P(zval_p) Z_DVAL(*zval_p)
407 : #define Z_STRVAL_P(zval_p) Z_STRVAL(*zval_p)
408 : #define Z_STRLEN_P(zval_p) Z_STRLEN(*zval_p)
409 : #define Z_ARRVAL_P(zval_p) Z_ARRVAL(*zval_p)
410 : #define Z_OBJPROP_P(zval_p) Z_OBJPROP(*zval_p)
411 : #define Z_OBJCE_P(zval_p) Z_OBJCE(*zval_p)
412 : #define Z_RESVAL_P(zval_p) Z_RESVAL(*zval_p)
413 : #define Z_OBJVAL_P(zval_p) Z_OBJVAL(*zval_p)
414 : #define Z_OBJ_HANDLE_P(zval_p) Z_OBJ_HANDLE(*zval_p)
415 : #define Z_OBJ_HT_P(zval_p) Z_OBJ_HT(*zval_p)
416 : #define Z_OBJ_HANDLER_P(zval_p, h) Z_OBJ_HANDLER(*zval_p, h)
417 : #define Z_OBJDEBUG_P(zval_p,is_tmp) Z_OBJDEBUG(*zval_p,is_tmp)
418 :
419 : #define Z_LVAL_PP(zval_pp) Z_LVAL(**zval_pp)
420 : #define Z_BVAL_PP(zval_pp) Z_BVAL(**zval_pp)
421 : #define Z_DVAL_PP(zval_pp) Z_DVAL(**zval_pp)
422 : #define Z_STRVAL_PP(zval_pp) Z_STRVAL(**zval_pp)
423 : #define Z_STRLEN_PP(zval_pp) Z_STRLEN(**zval_pp)
424 : #define Z_ARRVAL_PP(zval_pp) Z_ARRVAL(**zval_pp)
425 : #define Z_OBJPROP_PP(zval_pp) Z_OBJPROP(**zval_pp)
426 : #define Z_OBJCE_PP(zval_pp) Z_OBJCE(**zval_pp)
427 : #define Z_RESVAL_PP(zval_pp) Z_RESVAL(**zval_pp)
428 : #define Z_OBJVAL_PP(zval_pp) Z_OBJVAL(**zval_pp)
429 : #define Z_OBJ_HANDLE_PP(zval_p) Z_OBJ_HANDLE(**zval_p)
430 : #define Z_OBJ_HT_PP(zval_p) Z_OBJ_HT(**zval_p)
431 : #define Z_OBJ_HANDLER_PP(zval_p, h) Z_OBJ_HANDLER(**zval_p, h)
432 : #define Z_OBJDEBUG_PP(zval_pp,is_tmp) Z_OBJDEBUG(**zval_pp,is_tmp)
433 :
434 : #define Z_TYPE(zval) (zval).type
435 : #define Z_TYPE_P(zval_p) Z_TYPE(*zval_p)
436 : #define Z_TYPE_PP(zval_pp) Z_TYPE(**zval_pp)
437 :
438 : #if HAVE_SETLOCALE && defined(ZEND_WIN32) && !defined(ZTS) && defined(_MSC_VER) && (_MSC_VER >= 1400)
439 : /* This is performance improvement of tolower() on Windows and VC2005
440 : * Gives 10-18% on bench.php
441 : */
442 : #define ZEND_USE_TOLOWER_L 1
443 : #endif
444 :
445 : #ifdef ZEND_USE_TOLOWER_L
446 : ZEND_API void zend_update_current_locale(void);
447 : #else
448 : #define zend_update_current_locale()
449 : #endif
450 :
451 : #endif
452 :
453 : /*
454 : * Local variables:
455 : * tab-width: 4
456 : * c-basic-offset: 4
457 : * indent-tabs-mode: t
458 : * End:
459 : */
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