Annotation of embedaddon/php/Zend/zend_operators.h, revision 1.1.1.1
1.1 misho 1: /*
2: +----------------------------------------------------------------------+
3: | Zend Engine |
4: +----------------------------------------------------------------------+
5: | Copyright (c) 1998-2012 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 321634 2012-01-01 13:15:04Z felipe $ */
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: {
71: if (d > LONG_MAX || d < LONG_MIN) {
72: return (long)(unsigned long)(zend_long64) d;
73: }
74: 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: {
104: const char *ptr;
105: int base = 10, digits = 0, dp_or_e = 0;
106: double local_dval;
107: zend_uchar type;
108:
109: if (!length) {
110: return 0;
111: }
112:
113: /* Skip any whitespace
114: * This is much faster than the isspace() function */
115: while (*str == ' ' || *str == '\t' || *str == '\n' || *str == '\r' || *str == '\v' || *str == '\f') {
116: str++;
117: length--;
118: }
119: ptr = str;
120:
121: if (*ptr == '-' || *ptr == '+') {
122: ptr++;
123: }
124:
125: if (ZEND_IS_DIGIT(*ptr)) {
126: /* Handle hex numbers
127: * str is used instead of ptr to disallow signs and keep old behavior */
128: if (length > 2 && *str == '0' && (str[1] == 'x' || str[1] == 'X')) {
129: base = 16;
130: ptr += 2;
131: }
132:
133: /* Skip any leading 0s */
134: while (*ptr == '0') {
135: 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: for (type = IS_LONG; !(digits >= MAX_LENGTH_OF_LONG && (dval || allow_errors == 1)); digits++, ptr++) {
142: check_digits:
143: if (ZEND_IS_DIGIT(*ptr) || (base == 16 && ZEND_IS_XDIGIT(*ptr))) {
144: continue;
145: } else if (base == 10) {
146: if (*ptr == '.' && dp_or_e < 1) {
147: goto process_double;
148: } else if ((*ptr == 'e' || *ptr == 'E') && dp_or_e < 2) {
149: const char *e = ptr + 1;
150:
151: if (*e == '-' || *e == '+') {
152: ptr = e++;
153: }
154: if (ZEND_IS_DIGIT(*e)) {
155: goto process_double;
156: }
157: }
158: }
159:
160: break;
161: }
162:
163: if (base == 10) {
164: if (digits >= MAX_LENGTH_OF_LONG) {
165: dp_or_e = -1;
166: goto process_double;
167: }
168: } else if (!(digits < SIZEOF_LONG * 2 || (digits == SIZEOF_LONG * 2 && ptr[-digits] <= '7'))) {
169: if (dval) {
170: local_dval = zend_hex_strtod(str, (char **)&ptr);
171: }
172: type = IS_DOUBLE;
173: }
174: } else if (*ptr == '.' && ZEND_IS_DIGIT(ptr[1])) {
175: process_double:
176: 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: if (dval) {
181: local_dval = zend_strtod(str, (char **)&ptr);
182: } else if (allow_errors != 1 && dp_or_e != -1) {
183: dp_or_e = (*ptr++ == '.') ? 1 : 2;
184: goto check_digits;
185: }
186: } else {
187: return 0;
188: }
189:
190: if (ptr != str + length) {
191: if (!allow_errors) {
192: return 0;
193: }
194: if (allow_errors == -1) {
195: zend_error(E_NOTICE, "A non well formed numeric value encountered");
196: }
197: }
198:
199: if (type == IS_LONG) {
200: if (digits == MAX_LENGTH_OF_LONG - 1) {
201: int cmp = strcmp(&ptr[-digits], long_min_digits);
202:
203: if (!(cmp < 0 || (cmp == 0 && *str == '-'))) {
204: if (dval) {
205: *dval = zend_strtod(str, NULL);
206: }
207:
208: return IS_DOUBLE;
209: }
210: }
211:
212: if (lval) {
213: *lval = strtol(str, NULL, base);
214: }
215:
216: return IS_LONG;
217: } else {
218: if (dval) {
219: *dval = local_dval;
220: }
221:
222: return IS_DOUBLE;
223: }
224: }
225:
226: static inline char *
227: zend_memnstr(char *haystack, char *needle, int needle_len, char *end)
228: {
229: char *p = haystack;
230: char ne = needle[needle_len-1];
231:
232: if (needle_len == 1) {
233: return (char *)memchr(p, *needle, (end-p));
234: }
235:
236: if (needle_len > end-haystack) {
237: return NULL;
238: }
239:
240: end -= needle_len;
241:
242: while (p <= end) {
243: if ((p = (char *)memchr(p, *needle, (end-p+1))) && ne == p[needle_len-1]) {
244: if (!memcmp(needle, p, needle_len-1)) {
245: return p;
246: }
247: }
248:
249: if (p == NULL) {
250: return NULL;
251: }
252:
253: p++;
254: }
255:
256: return NULL;
257: }
258:
259: static inline void *zend_memrchr(const void *s, int c, size_t n)
260: {
261: register unsigned char *e;
262:
263: if (n <= 0) {
264: return NULL;
265: }
266:
267: for (e = (unsigned char *)s + n - 1; e >= (unsigned char *)s; e--) {
268: if (*e == (unsigned char)c) {
269: return (void *)e;
270: }
271: }
272:
273: 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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