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zend_operators.c
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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2012 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <[email protected]> |
| Zeev Suraski <[email protected]> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include <ctype.h>
#include "zend.h"
#include "zend_operators.h"
#include "zend_variables.h"
#include "zend_globals.h"
#include "zend_list.h"
#include "zend_API.h"
#include "zend_strtod.h"
#include "zend_exceptions.h"
#include "zend_closures.h"
#if ZEND_USE_TOLOWER_L
#include <locale.h>
static _locale_t current_locale = NULL;
/* this is true global! may lead to strange effects on ZTS, but so may setlocale() */
#define zend_tolower(c) _tolower_l(c, current_locale)
#else
#define zend_tolower(c) tolower(c)
#endif
#define TYPE_PAIR(t1,t2) (((t1) << 4) | (t2))
static const unsigned char tolower_map[256] = {
0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,
0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f,
0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f,
0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f,
0x40,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f,
0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x5b,0x5c,0x5d,0x5e,0x5f,
0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f,
0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x7b,0x7c,0x7d,0x7e,0x7f,
0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,
0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9a,0x9b,0x9c,0x9d,0x9e,0x9f,
0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,
0xb0,0xb1,0xb2,0xb3,0xb4,0xb5,0xb6,0xb7,0xb8,0xb9,0xba,0xbb,0xbc,0xbd,0xbe,0xbf,
0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,
0xd0,0xd1,0xd2,0xd3,0xd4,0xd5,0xd6,0xd7,0xd8,0xd9,0xda,0xdb,0xdc,0xdd,0xde,0xdf,
0xe0,0xe1,0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,0xe8,0xe9,0xea,0xeb,0xec,0xed,0xee,0xef,
0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfe,0xff
};
#define zend_tolower_ascii(c) (tolower_map[(unsigned char)(c)])
/**
* Functions using locale lowercase:
zend_binary_strncasecmp_l
zend_binary_strcasecmp_l
zend_binary_zval_strcasecmp
zend_binary_zval_strncasecmp
string_compare_function_ex
string_case_compare_function
* Functions using ascii lowercase:
zend_str_tolower_copy
zend_str_tolower_dup
zend_str_tolower
zend_binary_strcasecmp
zend_binary_strncasecmp
*/
ZEND_API int zend_atoi(const char *str, int str_len) /* {{{ */
{
int retval;
if (!str_len) {
str_len = strlen(str);
}
retval = strtol(str, NULL, 0);
if (str_len>0) {
switch (str[str_len-1]) {
case 'g':
case 'G':
retval *= 1024;
/* break intentionally missing */
case 'm':
case 'M':
retval *= 1024;
/* break intentionally missing */
case 'k':
case 'K':
retval *= 1024;
break;
}
}
return retval;
}
/* }}} */
ZEND_API long zend_atol(const char *str, int str_len) /* {{{ */
{
long retval;
if (!str_len) {
str_len = strlen(str);
}
retval = strtol(str, NULL, 0);
if (str_len>0) {
switch (str[str_len-1]) {
case 'g':
case 'G':
retval *= 1024;
/* break intentionally missing */
case 'm':
case 'M':
retval *= 1024;
/* break intentionally missing */
case 'k':
case 'K':
retval *= 1024;
break;
}
}
return retval;
}
/* }}} */
ZEND_API double zend_string_to_double(const char *number, zend_uint length) /* {{{ */
{
double divisor = 10.0;
double result = 0.0;
double exponent;
const char *end = number+length;
const char *digit = number;
if (!length) {
return result;
}
while (digit < end) {
if ((*digit <= '9' && *digit >= '0')) {
result *= 10;
result += *digit - '0';
} else if (*digit == '.') {
digit++;
break;
} else if (toupper(*digit) == 'E') {
exponent = (double) atoi(digit+1);
result *= pow(10.0, exponent);
return result;
} else {
return result;
}
digit++;
}
while (digit < end) {
if ((*digit <= '9' && *digit >= '0')) {
result += (*digit - '0') / divisor;
divisor *= 10;
} else if (toupper(*digit) == 'E') {
exponent = (double) atoi(digit+1);
result *= pow(10.0, exponent);
return result;
} else {
return result;
}
digit++;
}
return result;
}
/* }}} */
ZEND_API void convert_scalar_to_number(zval *op TSRMLS_DC) /* {{{ */
{
switch (Z_TYPE_P(op)) {
case IS_STRING:
{
char *strval;
strval = Z_STRVAL_P(op);
if ((Z_TYPE_P(op)=is_numeric_string(strval, Z_STRLEN_P(op), &Z_LVAL_P(op), &Z_DVAL_P(op), 1)) == 0) {
ZVAL_LONG(op, 0);
}
STR_FREE(strval);
break;
}
case IS_BOOL:
Z_TYPE_P(op) = IS_LONG;
break;
case IS_RESOURCE:
zend_list_delete(Z_LVAL_P(op));
Z_TYPE_P(op) = IS_LONG;
break;
case IS_OBJECT:
convert_to_long_base(op, 10);
break;
case IS_NULL:
ZVAL_LONG(op, 0);
break;
}
}
/* }}} */
/* {{{ zendi_convert_scalar_to_number */
#define zendi_convert_scalar_to_number(op, holder, result) \
if (op==result) { \
if (Z_TYPE_P(op) != IS_LONG) { \
convert_scalar_to_number(op TSRMLS_CC); \
} \
} else { \
switch (Z_TYPE_P(op)) { \
case IS_STRING: \
{ \
if ((Z_TYPE(holder)=is_numeric_string(Z_STRVAL_P(op), Z_STRLEN_P(op), &Z_LVAL(holder), &Z_DVAL(holder), 1)) == 0) { \
ZVAL_LONG(&(holder), 0); \
} \
(op) = &(holder); \
break; \
} \
case IS_BOOL: \
case IS_RESOURCE: \
ZVAL_LONG(&(holder), Z_LVAL_P(op)); \
(op) = &(holder); \
break; \
case IS_NULL: \
ZVAL_LONG(&(holder), 0); \
(op) = &(holder); \
break; \
case IS_OBJECT: \
(holder) = (*(op)); \
zval_copy_ctor(&(holder)); \
convert_to_long_base(&(holder), 10); \
if (Z_TYPE(holder) == IS_LONG) { \
(op) = &(holder); \
} \
break; \
} \
}
/* }}} */
/* {{{ zendi_convert_to_long */
#define zendi_convert_to_long(op, holder, result) \
if (op == result) { \
convert_to_long(op); \
} else if (Z_TYPE_P(op) != IS_LONG) { \
switch (Z_TYPE_P(op)) { \
case IS_NULL: \
Z_LVAL(holder) = 0; \
break; \
case IS_DOUBLE: \
Z_LVAL(holder) = zend_dval_to_lval(Z_DVAL_P(op)); \
break; \
case IS_STRING: \
Z_LVAL(holder) = strtol(Z_STRVAL_P(op), NULL, 10); \
break; \
case IS_ARRAY: \
Z_LVAL(holder) = (zend_hash_num_elements(Z_ARRVAL_P(op))?1:0); \
break; \
case IS_OBJECT: \
(holder) = (*(op)); \
zval_copy_ctor(&(holder)); \
convert_to_long_base(&(holder), 10); \
break; \
case IS_BOOL: \
case IS_RESOURCE: \
Z_LVAL(holder) = Z_LVAL_P(op); \
break; \
default: \
zend_error(E_WARNING, "Cannot convert to ordinal value"); \
Z_LVAL(holder) = 0; \
break; \
} \
Z_TYPE(holder) = IS_LONG; \
(op) = &(holder); \
}
/* }}} */
/* {{{ zendi_convert_to_boolean */
#define zendi_convert_to_boolean(op, holder, result) \
if (op==result) { \
convert_to_boolean(op); \
} else if (Z_TYPE_P(op) != IS_BOOL) { \
switch (Z_TYPE_P(op)) { \
case IS_NULL: \
Z_LVAL(holder) = 0; \
break; \
case IS_RESOURCE: \
case IS_LONG: \
Z_LVAL(holder) = (Z_LVAL_P(op) ? 1 : 0); \
break; \
case IS_DOUBLE: \
Z_LVAL(holder) = (Z_DVAL_P(op) ? 1 : 0); \
break; \
case IS_STRING: \
if (Z_STRLEN_P(op) == 0 \
|| (Z_STRLEN_P(op)==1 && Z_STRVAL_P(op)[0]=='0')) { \
Z_LVAL(holder) = 0; \
} else { \
Z_LVAL(holder) = 1; \
} \
break; \
case IS_ARRAY: \
Z_LVAL(holder) = (zend_hash_num_elements(Z_ARRVAL_P(op))?1:0); \
break; \
case IS_OBJECT: \
(holder) = (*(op)); \
zval_copy_ctor(&(holder)); \
convert_to_boolean(&(holder)); \
break; \
default: \
Z_LVAL(holder) = 0; \
break; \
} \
Z_TYPE(holder) = IS_BOOL; \
(op) = &(holder); \
}
/* }}} */
/* {{{ convert_object_to_type */
#define convert_object_to_type(op, ctype, conv_func) \
if (Z_OBJ_HT_P(op)->cast_object) { \
zval dst; \
if (Z_OBJ_HT_P(op)->cast_object(op, &dst, ctype TSRMLS_CC) == FAILURE) { \
zend_error(E_RECOVERABLE_ERROR, \
"Object of class %s could not be converted to %s", Z_OBJCE_P(op)->name, \
zend_get_type_by_const(ctype)); \
} else { \
zval_dtor(op); \
Z_TYPE_P(op) = ctype; \
op->value = dst.value; \
} \
} else { \
if (Z_OBJ_HT_P(op)->get) { \
zval *newop = Z_OBJ_HT_P(op)->get(op TSRMLS_CC); \
if (Z_TYPE_P(newop) != IS_OBJECT) { \
/* for safety - avoid loop */ \
zval_dtor(op); \
*op = *newop; \
FREE_ZVAL(newop); \
conv_func(op); \
} \
} \
}
/* }}} */
ZEND_API void convert_to_long(zval *op) /* {{{ */
{
if (Z_TYPE_P(op) != IS_LONG) {
convert_to_long_base(op, 10);
}
}
/* }}} */
ZEND_API void convert_to_long_base(zval *op, int base) /* {{{ */
{
long tmp;
switch (Z_TYPE_P(op)) {
case IS_NULL:
Z_LVAL_P(op) = 0;
break;
case IS_RESOURCE: {
TSRMLS_FETCH();
zend_list_delete(Z_LVAL_P(op));
}
/* break missing intentionally */
case IS_BOOL:
case IS_LONG:
break;
case IS_DOUBLE:
Z_LVAL_P(op) = zend_dval_to_lval(Z_DVAL_P(op));
break;
case IS_STRING:
{
char *strval = Z_STRVAL_P(op);
Z_LVAL_P(op) = strtol(strval, NULL, base);
STR_FREE(strval);
}
break;
case IS_ARRAY:
tmp = (zend_hash_num_elements(Z_ARRVAL_P(op))?1:0);
zval_dtor(op);
Z_LVAL_P(op) = tmp;
break;
case IS_OBJECT:
{
int retval = 1;
TSRMLS_FETCH();
convert_object_to_type(op, IS_LONG, convert_to_long);
if (Z_TYPE_P(op) == IS_LONG) {
return;
}
zend_error(E_NOTICE, "Object of class %s could not be converted to int", Z_OBJCE_P(op)->name);
zval_dtor(op);
ZVAL_LONG(op, retval);
return;
}
default:
zend_error(E_WARNING, "Cannot convert to ordinal value");
zval_dtor(op);
Z_LVAL_P(op) = 0;
break;
}
Z_TYPE_P(op) = IS_LONG;
}
/* }}} */
ZEND_API void convert_to_double(zval *op) /* {{{ */
{
double tmp;
switch (Z_TYPE_P(op)) {
case IS_NULL:
Z_DVAL_P(op) = 0.0;
break;
case IS_RESOURCE: {
TSRMLS_FETCH();
zend_list_delete(Z_LVAL_P(op));
}
/* break missing intentionally */
case IS_BOOL:
case IS_LONG:
Z_DVAL_P(op) = (double) Z_LVAL_P(op);
break;
case IS_DOUBLE:
break;
case IS_STRING:
{
char *strval = Z_STRVAL_P(op);
Z_DVAL_P(op) = zend_strtod(strval, NULL);
STR_FREE(strval);
}
break;
case IS_ARRAY:
tmp = (zend_hash_num_elements(Z_ARRVAL_P(op))?1:0);
zval_dtor(op);
Z_DVAL_P(op) = tmp;
break;
case IS_OBJECT:
{
double retval = 1.0;
TSRMLS_FETCH();
convert_object_to_type(op, IS_DOUBLE, convert_to_double);
if (Z_TYPE_P(op) == IS_DOUBLE) {
return;
}
zend_error(E_NOTICE, "Object of class %s could not be converted to double", Z_OBJCE_P(op)->name);
zval_dtor(op);
ZVAL_DOUBLE(op, retval);
break;
}
default:
zend_error(E_WARNING, "Cannot convert to real value (type=%d)", Z_TYPE_P(op));
zval_dtor(op);
Z_DVAL_P(op) = 0;
break;
}
Z_TYPE_P(op) = IS_DOUBLE;
}
/* }}} */
ZEND_API void convert_to_null(zval *op) /* {{{ */
{
if (Z_TYPE_P(op) == IS_OBJECT) {
if (Z_OBJ_HT_P(op)->cast_object) {
zval *org;
TSRMLS_FETCH();
ALLOC_ZVAL(org);
*org = *op;
if (Z_OBJ_HT_P(op)->cast_object(org, op, IS_NULL TSRMLS_CC) == SUCCESS) {
zval_dtor(org);
return;
}
*op = *org;
FREE_ZVAL(org);
}
}
zval_dtor(op);
Z_TYPE_P(op) = IS_NULL;
}
/* }}} */
ZEND_API void convert_to_boolean(zval *op) /* {{{ */
{
int tmp;
switch (Z_TYPE_P(op)) {
case IS_BOOL:
break;
case IS_NULL:
Z_LVAL_P(op) = 0;
break;
case IS_RESOURCE: {
TSRMLS_FETCH();
zend_list_delete(Z_LVAL_P(op));
}
/* break missing intentionally */
case IS_LONG:
Z_LVAL_P(op) = (Z_LVAL_P(op) ? 1 : 0);
break;
case IS_DOUBLE:
Z_LVAL_P(op) = (Z_DVAL_P(op) ? 1 : 0);
break;
case IS_STRING:
{
char *strval = Z_STRVAL_P(op);
if (Z_STRLEN_P(op) == 0
|| (Z_STRLEN_P(op)==1 && Z_STRVAL_P(op)[0]=='0')) {
Z_LVAL_P(op) = 0;
} else {
Z_LVAL_P(op) = 1;
}
STR_FREE(strval);
}
break;
case IS_ARRAY:
tmp = (zend_hash_num_elements(Z_ARRVAL_P(op))?1:0);
zval_dtor(op);
Z_LVAL_P(op) = tmp;
break;
case IS_OBJECT:
{
zend_bool retval = 1;
TSRMLS_FETCH();
convert_object_to_type(op, IS_BOOL, convert_to_boolean);
if (Z_TYPE_P(op) == IS_BOOL) {
return;
}
zval_dtor(op);
ZVAL_BOOL(op, retval);
break;
}
default:
zval_dtor(op);
Z_LVAL_P(op) = 0;
break;
}
Z_TYPE_P(op) = IS_BOOL;
}
/* }}} */
ZEND_API void _convert_to_string(zval *op ZEND_FILE_LINE_DC) /* {{{ */
{
long lval;
double dval;
switch (Z_TYPE_P(op)) {
case IS_NULL:
Z_STRVAL_P(op) = STR_EMPTY_ALLOC();
Z_STRLEN_P(op) = 0;
break;
case IS_STRING:
break;
case IS_BOOL:
if (Z_LVAL_P(op)) {
Z_STRVAL_P(op) = estrndup_rel("1", 1);
Z_STRLEN_P(op) = 1;
} else {
Z_STRVAL_P(op) = STR_EMPTY_ALLOC();
Z_STRLEN_P(op) = 0;
}
break;
case IS_RESOURCE: {
long tmp = Z_LVAL_P(op);
TSRMLS_FETCH();
zend_list_delete(Z_LVAL_P(op));
Z_STRLEN_P(op) = zend_spprintf(&Z_STRVAL_P(op), 0, "Resource id #%ld", tmp);
break;
}
case IS_LONG:
lval = Z_LVAL_P(op);
Z_STRLEN_P(op) = zend_spprintf(&Z_STRVAL_P(op), 0, "%ld", lval);
break;
case IS_DOUBLE: {
TSRMLS_FETCH();
dval = Z_DVAL_P(op);
Z_STRLEN_P(op) = zend_spprintf(&Z_STRVAL_P(op), 0, "%.*G", (int) EG(precision), dval);
/* %G already handles removing trailing zeros from the fractional part, yay */
break;
}
case IS_ARRAY:
zend_error(E_NOTICE, "Array to string conversion");
zval_dtor(op);
Z_STRVAL_P(op) = estrndup_rel("Array", sizeof("Array")-1);
Z_STRLEN_P(op) = sizeof("Array")-1;
break;
case IS_OBJECT: {
TSRMLS_FETCH();
convert_object_to_type(op, IS_STRING, convert_to_string);
if (Z_TYPE_P(op) == IS_STRING) {
return;
}
zend_error(E_NOTICE, "Object of class %s to string conversion", Z_OBJCE_P(op)->name);
zval_dtor(op);
Z_STRVAL_P(op) = estrndup_rel("Object", sizeof("Object")-1);
Z_STRLEN_P(op) = sizeof("Object")-1;
break;
}
default:
zval_dtor(op);
ZVAL_BOOL(op, 0);
break;
}
Z_TYPE_P(op) = IS_STRING;
}
/* }}} */
static void convert_scalar_to_array(zval *op, int type TSRMLS_DC) /* {{{ */
{
zval *entry;
ALLOC_ZVAL(entry);
*entry = *op;
INIT_PZVAL(entry);
switch (type) {
case IS_ARRAY:
ALLOC_HASHTABLE(Z_ARRVAL_P(op));
zend_hash_init(Z_ARRVAL_P(op), 0, NULL, ZVAL_PTR_DTOR, 0);
zend_hash_index_update(Z_ARRVAL_P(op), 0, (void *) &entry, sizeof(zval *), NULL);
Z_TYPE_P(op) = IS_ARRAY;
break;
case IS_OBJECT:
object_init(op);
zend_hash_update(Z_OBJPROP_P(op), "scalar", sizeof("scalar"), (void *) &entry, sizeof(zval *), NULL);
break;
}
}
/* }}} */
ZEND_API void convert_to_array(zval *op) /* {{{ */
{
TSRMLS_FETCH();
switch (Z_TYPE_P(op)) {
case IS_ARRAY:
break;
/* OBJECTS_OPTIMIZE */
case IS_OBJECT:
{
zval *tmp;
HashTable *ht;
ALLOC_HASHTABLE(ht);
zend_hash_init(ht, 0, NULL, ZVAL_PTR_DTOR, 0);
if (Z_OBJCE_P(op) == zend_ce_closure) {
convert_scalar_to_array(op, IS_ARRAY TSRMLS_CC);
if (Z_TYPE_P(op) == IS_ARRAY) {
zend_hash_destroy(ht);
FREE_HASHTABLE(ht);
return;
}
} else if (Z_OBJ_HT_P(op)->get_properties) {
HashTable *obj_ht = Z_OBJ_HT_P(op)->get_properties(op TSRMLS_CC);
if (obj_ht) {
zend_hash_copy(ht, obj_ht, (copy_ctor_func_t) zval_add_ref, (void *) &tmp, sizeof(zval *));
}
} else {
convert_object_to_type(op, IS_ARRAY, convert_to_array);
if (Z_TYPE_P(op) == IS_ARRAY) {
zend_hash_destroy(ht);
FREE_HASHTABLE(ht);
return;
}
}
zval_dtor(op);
Z_TYPE_P(op) = IS_ARRAY;
Z_ARRVAL_P(op) = ht;
}
break;
case IS_NULL:
ALLOC_HASHTABLE(Z_ARRVAL_P(op));
zend_hash_init(Z_ARRVAL_P(op), 0, NULL, ZVAL_PTR_DTOR, 0);
Z_TYPE_P(op) = IS_ARRAY;
break;
default:
convert_scalar_to_array(op, IS_ARRAY TSRMLS_CC);
break;
}
}
/* }}} */
ZEND_API void convert_to_object(zval *op) /* {{{ */
{
TSRMLS_FETCH();
switch (Z_TYPE_P(op)) {
case IS_ARRAY:
{
object_and_properties_init(op, zend_standard_class_def, Z_ARRVAL_P(op));
break;
}
case IS_OBJECT:
break;
case IS_NULL:
object_init(op);
break;
default:
convert_scalar_to_array(op, IS_OBJECT TSRMLS_CC);
break;
}
}
/* }}} */
ZEND_API void multi_convert_to_long_ex(int argc, ...) /* {{{ */
{
zval **arg;
va_list ap;
va_start(ap, argc);
while (argc--) {
arg = va_arg(ap, zval **);
convert_to_long_ex(arg);
}
va_end(ap);
}
/* }}} */
ZEND_API void multi_convert_to_double_ex(int argc, ...) /* {{{ */
{
zval **arg;
va_list ap;
va_start(ap, argc);
while (argc--) {
arg = va_arg(ap, zval **);
convert_to_double_ex(arg);
}
va_end(ap);
}
/* }}} */
ZEND_API void multi_convert_to_string_ex(int argc, ...) /* {{{ */
{
zval **arg;
va_list ap;
va_start(ap, argc);
while (argc--) {
arg = va_arg(ap, zval **);
convert_to_string_ex(arg);
}
va_end(ap);
}
/* }}} */
ZEND_API int add_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
zval op1_copy, op2_copy;
int converted = 0;
while (1) {
switch (TYPE_PAIR(Z_TYPE_P(op1), Z_TYPE_P(op2))) {
case TYPE_PAIR(IS_LONG, IS_LONG): {
long lval = Z_LVAL_P(op1) + Z_LVAL_P(op2);
/* check for overflow by comparing sign bits */
if ((Z_LVAL_P(op1) & LONG_SIGN_MASK) == (Z_LVAL_P(op2) & LONG_SIGN_MASK)
&& (Z_LVAL_P(op1) & LONG_SIGN_MASK) != (lval & LONG_SIGN_MASK)) {
ZVAL_DOUBLE(result, (double) Z_LVAL_P(op1) + (double) Z_LVAL_P(op2));
} else {
ZVAL_LONG(result, lval);
}
return SUCCESS;
}
case TYPE_PAIR(IS_LONG, IS_DOUBLE):
ZVAL_DOUBLE(result, ((double)Z_LVAL_P(op1)) + Z_DVAL_P(op2));
return SUCCESS;
case TYPE_PAIR(IS_DOUBLE, IS_LONG):
ZVAL_DOUBLE(result, Z_DVAL_P(op1) + ((double)Z_LVAL_P(op2)));
return SUCCESS;
case TYPE_PAIR(IS_DOUBLE, IS_DOUBLE):
ZVAL_DOUBLE(result, Z_DVAL_P(op1) + Z_DVAL_P(op2));
return SUCCESS;
case TYPE_PAIR(IS_ARRAY, IS_ARRAY): {
zval *tmp;
if ((result == op1) && (result == op2)) {
/* $a += $a */
return SUCCESS;
}
if (result != op1) {
*result = *op1;
zval_copy_ctor(result);
}
zend_hash_merge(Z_ARRVAL_P(result), Z_ARRVAL_P(op2), (void (*)(void *pData)) zval_add_ref, (void *) &tmp, sizeof(zval *), 0);
return SUCCESS;
}
default:
if (!converted) {
zendi_convert_scalar_to_number(op1, op1_copy, result);
zendi_convert_scalar_to_number(op2, op2_copy, result);
converted = 1;
} else {
zend_error(E_ERROR, "Unsupported operand types");
return FAILURE; /* unknown datatype */
}
}
}
}
/* }}} */
ZEND_API int sub_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
zval op1_copy, op2_copy;
int converted = 0;
while (1) {
switch (TYPE_PAIR(Z_TYPE_P(op1), Z_TYPE_P(op2))) {
case TYPE_PAIR(IS_LONG, IS_LONG): {
long lval = Z_LVAL_P(op1) - Z_LVAL_P(op2);
/* check for overflow by comparing sign bits */
if ((Z_LVAL_P(op1) & LONG_SIGN_MASK) != (Z_LVAL_P(op2) & LONG_SIGN_MASK)
&& (Z_LVAL_P(op1) & LONG_SIGN_MASK) != (lval & LONG_SIGN_MASK)) {
ZVAL_DOUBLE(result, (double) Z_LVAL_P(op1) - (double) Z_LVAL_P(op2));
} else {
ZVAL_LONG(result, lval);
}
return SUCCESS;
}
case TYPE_PAIR(IS_LONG, IS_DOUBLE):
ZVAL_DOUBLE(result, ((double)Z_LVAL_P(op1)) - Z_DVAL_P(op2));
return SUCCESS;
case TYPE_PAIR(IS_DOUBLE, IS_LONG):
ZVAL_DOUBLE(result, Z_DVAL_P(op1) - ((double)Z_LVAL_P(op2)));
return SUCCESS;
case TYPE_PAIR(IS_DOUBLE, IS_DOUBLE):
ZVAL_DOUBLE(result, Z_DVAL_P(op1) - Z_DVAL_P(op2));
return SUCCESS;
default:
if (!converted) {
zendi_convert_scalar_to_number(op1, op1_copy, result);
zendi_convert_scalar_to_number(op2, op2_copy, result);
converted = 1;
} else {
zend_error(E_ERROR, "Unsupported operand types");
return FAILURE; /* unknown datatype */
}
}
}
}
/* }}} */
ZEND_API int mul_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
zval op1_copy, op2_copy;
int converted = 0;
while (1) {
switch (TYPE_PAIR(Z_TYPE_P(op1), Z_TYPE_P(op2))) {
case TYPE_PAIR(IS_LONG, IS_LONG): {
long overflow;
ZEND_SIGNED_MULTIPLY_LONG(Z_LVAL_P(op1),Z_LVAL_P(op2), Z_LVAL_P(result),Z_DVAL_P(result),overflow);
Z_TYPE_P(result) = overflow ? IS_DOUBLE : IS_LONG;
return SUCCESS;
}
case TYPE_PAIR(IS_LONG, IS_DOUBLE):
ZVAL_DOUBLE(result, ((double)Z_LVAL_P(op1)) * Z_DVAL_P(op2));
return SUCCESS;
case TYPE_PAIR(IS_DOUBLE, IS_LONG):
ZVAL_DOUBLE(result, Z_DVAL_P(op1) * ((double)Z_LVAL_P(op2)));
return SUCCESS;
case TYPE_PAIR(IS_DOUBLE, IS_DOUBLE):
ZVAL_DOUBLE(result, Z_DVAL_P(op1) * Z_DVAL_P(op2));
return SUCCESS;
default:
if (!converted) {
zendi_convert_scalar_to_number(op1, op1_copy, result);
zendi_convert_scalar_to_number(op2, op2_copy, result);
converted = 1;
} else {
zend_error(E_ERROR, "Unsupported operand types");
return FAILURE; /* unknown datatype */
}
}
}
}
/* }}} */
ZEND_API int div_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
zval op1_copy, op2_copy;
int converted = 0;
while (1) {
switch (TYPE_PAIR(Z_TYPE_P(op1), Z_TYPE_P(op2))) {
case TYPE_PAIR(IS_LONG, IS_LONG):
if (Z_LVAL_P(op2) == 0) {
zend_error(E_WARNING, "Division by zero");
ZVAL_BOOL(result, 0);
return FAILURE; /* division by zero */
} else if (Z_LVAL_P(op2) == -1 && Z_LVAL_P(op1) == LONG_MIN) {
/* Prevent overflow error/crash */
ZVAL_DOUBLE(result, (double) LONG_MIN / -1);
return SUCCESS;
}
if (Z_LVAL_P(op1) % Z_LVAL_P(op2) == 0) { /* integer */
ZVAL_LONG(result, Z_LVAL_P(op1) / Z_LVAL_P(op2));
} else {
ZVAL_DOUBLE(result, ((double) Z_LVAL_P(op1)) / Z_LVAL_P(op2));
}
return SUCCESS;
case TYPE_PAIR(IS_DOUBLE, IS_LONG):
if (Z_LVAL_P(op2) == 0) {
zend_error(E_WARNING, "Division by zero");
ZVAL_BOOL(result, 0);
return FAILURE; /* division by zero */
}
ZVAL_DOUBLE(result, Z_DVAL_P(op1) / (double)Z_LVAL_P(op2));
return SUCCESS;
case TYPE_PAIR(IS_LONG, IS_DOUBLE):
if (Z_DVAL_P(op2) == 0) {
zend_error(E_WARNING, "Division by zero");
ZVAL_BOOL(result, 0);
return FAILURE; /* division by zero */
}
ZVAL_DOUBLE(result, (double)Z_LVAL_P(op1) / Z_DVAL_P(op2));
return SUCCESS;
case TYPE_PAIR(IS_DOUBLE, IS_DOUBLE):
if (Z_DVAL_P(op2) == 0) {
zend_error(E_WARNING, "Division by zero");
ZVAL_BOOL(result, 0);
return FAILURE; /* division by zero */
}
ZVAL_DOUBLE(result, Z_DVAL_P(op1) / Z_DVAL_P(op2));
return SUCCESS;
default:
if (!converted) {
zendi_convert_scalar_to_number(op1, op1_copy, result);
zendi_convert_scalar_to_number(op2, op2_copy, result);
converted = 1;
} else {
zend_error(E_ERROR, "Unsupported operand types");
return FAILURE; /* unknown datatype */