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php-src/Zend/zend_operators.c
Matt Wilmas b907aa4331 MFH: 
Restored double->long conversion behavior to that of PHP 5.2 (on most platforms) and prior:
 * Out-of-range numbers overflow/preserve least significant bits (no LONG_MAX/MIN limit)
 * See bug #42868 (presumably-rare platform with different results in 5.2)
 * On 32-bit platforms with 64-bit long type, a zend_long64 cast has been added,
    otherwise it's the same as 5.2
 * Use this conversion method everywhere instead of some plain (long) casts

Added 'L' parameter parsing specifier to ensure a LONG_MAX/MIN limit:
 * Essentially what 5.3's new conversion was doing in most cases
 * Functions with "limit" or "length" type params could be updated to use this,
    and prevent confusing overflow behavior with huge numbers (*also* in 5.2)
  - See bug #47854, for example; or even #42868 again

# Test updates coming
2009-06-04 18:20:45 +00:00

2052 lines
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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2009 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 |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#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_multiply.h"
#include "zend_strtod.h"
#include "zend_exceptions.h"
#define LONG_SIGN_MASK (1L << (8*sizeof(long)-1))
#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))
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_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 */
}
}
}
}
/* }}} */
ZEND_API int mod_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
zval op1_copy, op2_copy;
zendi_convert_to_long(op1, op1_copy, result);
zendi_convert_to_long(op2, op2_copy, result);
if (Z_LVAL_P(op2) == 0) {
zend_error(E_WARNING, "Division by zero");
ZVAL_BOOL(result, 0);
return FAILURE; /* modulus by zero */
}
if (Z_LVAL_P(op2) == -1) {
/* Prevent overflow error/crash if op1==LONG_MIN */
ZVAL_LONG(result, 0);
return SUCCESS;
}
ZVAL_LONG(result, Z_LVAL_P(op1) % Z_LVAL_P(op2));
return SUCCESS;
}
/* }}} */
ZEND_API int boolean_xor_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
zval op1_copy, op2_copy;
zendi_convert_to_boolean(op1, op1_copy, result);
zendi_convert_to_boolean(op2, op2_copy, result);
ZVAL_BOOL(result, Z_LVAL_P(op1) ^ Z_LVAL_P(op2));
return SUCCESS;
}
/* }}} */
ZEND_API int boolean_not_function(zval *result, zval *op1 TSRMLS_DC) /* {{{ */
{
zval op1_copy;
zendi_convert_to_boolean(op1, op1_copy, result);
ZVAL_BOOL(result, !Z_LVAL_P(op1));
return SUCCESS;
}
/* }}} */
ZEND_API int bitwise_not_function(zval *result, zval *op1 TSRMLS_DC) /* {{{ */
{
zval op1_copy = *op1;
op1 = &op1_copy;
if (Z_TYPE_P(op1) == IS_LONG) {
ZVAL_LONG(result, ~Z_LVAL_P(op1));
return SUCCESS;
} else if (Z_TYPE_P(op1) == IS_DOUBLE) {
ZVAL_LONG(result, ~zend_dval_to_lval(Z_DVAL_P(op1)));
return SUCCESS;
} else if (Z_TYPE_P(op1) == IS_STRING) {
int i;
Z_TYPE_P(result) = IS_STRING;
Z_STRVAL_P(result) = estrndup(Z_STRVAL_P(op1), Z_STRLEN_P(op1));
Z_STRLEN_P(result) = Z_STRLEN_P(op1);
for (i = 0; i < Z_STRLEN_P(op1); i++) {
Z_STRVAL_P(result)[i] = ~Z_STRVAL_P(op1)[i];
}
return SUCCESS;
}
zend_error(E_ERROR, "Unsupported operand types");
return FAILURE; /* unknown datatype */
}
/* }}} */
ZEND_API int bitwise_or_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
zval op1_copy, op2_copy;
if (Z_TYPE_P(op1) == IS_STRING && Z_TYPE_P(op2) == IS_STRING) {
zval *longer, *shorter;
char *result_str;
int i, result_len;
if (Z_STRLEN_P(op1) >= Z_STRLEN_P(op2)) {
longer = op1;
shorter = op2;
} else {
longer = op2;
shorter = op1;
}
Z_TYPE_P(result) = IS_STRING;
result_len = Z_STRLEN_P(longer);
result_str = estrndup(Z_STRVAL_P(longer), Z_STRLEN_P(longer));
for (i = 0; i < Z_STRLEN_P(shorter); i++) {
result_str[i] |= Z_STRVAL_P(shorter)[i];
}
if (result==op1) {
STR_FREE(Z_STRVAL_P(result));
}
Z_STRVAL_P(result) = result_str;
Z_STRLEN_P(result) = result_len;
return SUCCESS;
}
zendi_convert_to_long(op1, op1_copy, result);
zendi_convert_to_long(op2, op2_copy, result);
ZVAL_LONG(result, Z_LVAL_P(op1) | Z_LVAL_P(op2));
return SUCCESS;
}
/* }}} */
ZEND_API int bitwise_and_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
zval op1_copy, op2_copy;
if (Z_TYPE_P(op1) == IS_STRING && Z_TYPE_P(op2) == IS_STRING) {
zval *longer, *shorter;
char *result_str;
int i, result_len;
if (Z_STRLEN_P(op1) >= Z_STRLEN_P(op2)) {
longer = op1;
shorter = op2;
} else {
longer = op2;
shorter = op1;
}
Z_TYPE_P(result) = IS_STRING;
result_len = Z_STRLEN_P(shorter);
result_str = estrndup(Z_STRVAL_P(shorter), Z_STRLEN_P(shorter));
for (i = 0; i < Z_STRLEN_P(shorter); i++) {
result_str[i] &= Z_STRVAL_P(longer)[i];
}
if (result==op1) {
STR_FREE(Z_STRVAL_P(result));
}
Z_STRVAL_P(result) = result_str;
Z_STRLEN_P(result) = result_len;
return SUCCESS;
}
zendi_convert_to_long(op1, op1_copy, result);
zendi_convert_to_long(op2, op2_copy, result);
ZVAL_LONG(result, Z_LVAL_P(op1) & Z_LVAL_P(op2));
return SUCCESS;
}
/* }}} */
ZEND_API int bitwise_xor_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
zval op1_copy, op2_copy;
if (Z_TYPE_P(op1) == IS_STRING && Z_TYPE_P(op2) == IS_STRING) {
zval *longer, *shorter;
char *result_str;
int i, result_len;
if (Z_STRLEN_P(op1) >= Z_STRLEN_P(op2)) {
longer = op1;
shorter = op2;
} else {
longer = op2;
shorter = op1;
}
Z_TYPE_P(result) = IS_STRING;
result_len = Z_STRLEN_P(shorter);
result_str = estrndup(Z_STRVAL_P(shorter), Z_STRLEN_P(shorter));
for (i = 0; i < Z_STRLEN_P(shorter); i++) {
result_str[i] ^= Z_STRVAL_P(longer)[i];
}
if (result==op1) {
STR_FREE(Z_STRVAL_P(result));
}
Z_STRVAL_P(result) = result_str;
Z_STRLEN_P(result) = result_len;
return SUCCESS;
}
zendi_convert_to_long(op1, op1_copy, result);
zendi_convert_to_long(op2, op2_copy, result);
ZVAL_LONG(result, Z_LVAL_P(op1) ^ Z_LVAL_P(op2));
return SUCCESS;
}
/* }}} */
ZEND_API int shift_left_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
zval op1_copy, op2_copy;
zendi_convert_to_long(op1, op1_copy, result);
zendi_convert_to_long(op2, op2_copy, result);
ZVAL_LONG(result, Z_LVAL_P(op1) << Z_LVAL_P(op2));
return SUCCESS;
}
/* }}} */
ZEND_API int shift_right_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
zval op1_copy, op2_copy;
zendi_convert_to_long(op1, op1_copy, result);
zendi_convert_to_long(op2, op2_copy, result);
ZVAL_LONG(result, Z_LVAL_P(op1) >> Z_LVAL_P(op2));
return SUCCESS;
}
/* }}} */
/* must support result==op1 */
ZEND_API int add_char_to_string(zval *result, const zval *op1, const zval *op2) /* {{{ */
{
Z_STRLEN_P(result) = Z_STRLEN_P(op1) + 1;
Z_STRVAL_P(result) = (char *) erealloc(Z_STRVAL_P(op1), Z_STRLEN_P(result)+1);
Z_STRVAL_P(result)[Z_STRLEN_P(result) - 1] = (char) Z_LVAL_P(op2);
Z_STRVAL_P(result)[Z_STRLEN_P(result)] = 0;
Z_TYPE_P(result) = IS_STRING;
return SUCCESS;
}
/* }}} */
/* must support result==op1 */
ZEND_API int add_string_to_string(zval *result, const zval *op1, const zval *op2) /* {{{ */
{
int length = Z_STRLEN_P(op1) + Z_STRLEN_P(op2);
Z_STRVAL_P(result) = (char *) erealloc(Z_STRVAL_P(op1), length+1);
memcpy(Z_STRVAL_P(result)+Z_STRLEN_P(op1), Z_STRVAL_P(op2), Z_STRLEN_P(op2));
Z_STRVAL_P(result)[length] = 0;
Z_STRLEN_P(result) = length;
Z_TYPE_P(result) = IS_STRING;
return SUCCESS;
}
/* }}} */
ZEND_API int concat_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
zval op1_copy, op2_copy;
int use_copy1 = 0, use_copy2 = 0;
if (Z_TYPE_P(op1) != IS_STRING) {
zend_make_printable_zval(op1, &op1_copy, &use_copy1);
}
if (Z_TYPE_P(op2) != IS_STRING) {
zend_make_printable_zval(op2, &op2_copy, &use_copy2);
}
if (use_copy1) {
/* We have created a converted copy of op1. Therefore, op1 won't become the result so
* we have to free it.
*/
if (result == op1) {
zval_dtor(op1);
}
op1 = &op1_copy;
}
if (use_copy2) {
op2 = &op2_copy;
}
if (result==op1) { /* special case, perform operations on result */
uint res_len = Z_STRLEN_P(op1) + Z_STRLEN_P(op2);
Z_STRVAL_P(result) = erealloc(Z_STRVAL_P(result), res_len+1);
memcpy(Z_STRVAL_P(result)+Z_STRLEN_P(result), Z_STRVAL_P(op2), Z_STRLEN_P(op2));
Z_STRVAL_P(result)[res_len]=0;
Z_STRLEN_P(result) = res_len;
} else {
Z_STRLEN_P(result) = Z_STRLEN_P(op1) + Z_STRLEN_P(op2);
Z_STRVAL_P(result) = (char *) emalloc(Z_STRLEN_P(result) + 1);
memcpy(Z_STRVAL_P(result), Z_STRVAL_P(op1), Z_STRLEN_P(op1));
memcpy(Z_STRVAL_P(result)+Z_STRLEN_P(op1), Z_STRVAL_P(op2), Z_STRLEN_P(op2));
Z_STRVAL_P(result)[Z_STRLEN_P(result)] = 0;
Z_TYPE_P(result) = IS_STRING;
}
if (use_copy1) {
zval_dtor(op1);
}
if (use_copy2) {
zval_dtor(op2);
}
return SUCCESS;
}
/* }}} */
ZEND_API int string_compare_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
zval op1_copy, op2_copy;
int use_copy1 = 0, use_copy2 = 0;
if (Z_TYPE_P(op1) != IS_STRING) {
zend_make_printable_zval(op1, &op1_copy, &use_copy1);
}
if (Z_TYPE_P(op2) != IS_STRING) {
zend_make_printable_zval(op2, &op2_copy, &use_copy2);
}
if (use_copy1) {
op1 = &op1_copy;
}
if (use_copy2) {
op2 = &op2_copy;
}
ZVAL_LONG(result, zend_binary_zval_strcmp(op1, op2));
if (use_copy1) {
zval_dtor(op1);
}
if (use_copy2) {
zval_dtor(op2);
}
return SUCCESS;
}
/* }}} */
#if HAVE_STRCOLL
ZEND_API int string_locale_compare_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
zval op1_copy, op2_copy;
int use_copy1 = 0, use_copy2 = 0;
if (Z_TYPE_P(op1) != IS_STRING) {
zend_make_printable_zval(op1, &op1_copy, &use_copy1);
}
if (Z_TYPE_P(op2) != IS_STRING) {
zend_make_printable_zval(op2, &op2_copy, &use_copy2);
}
if (use_copy1) {
op1 = &op1_copy;
}
if (use_copy2) {
op2 = &op2_copy;
}
ZVAL_LONG(result, strcoll(Z_STRVAL_P(op1), Z_STRVAL_P(op2)));
if (use_copy1) {
zval_dtor(op1);
}
if (use_copy2) {
zval_dtor(op2);
}
return SUCCESS;
}
/* }}} */
#endif
ZEND_API int numeric_compare_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
zval op1_copy, op2_copy;
op1_copy = *op1;
zval_copy_ctor(&op1_copy);
op2_copy = *op2;
zval_copy_ctor(&op2_copy);
convert_to_double(&op1_copy);
convert_to_double(&op2_copy);
ZVAL_LONG(result, ZEND_NORMALIZE_BOOL(Z_DVAL(op1_copy)-Z_DVAL(op2_copy)));
return SUCCESS;
}
/* }}} */
static inline void zend_free_obj_get_result(zval *op TSRMLS_DC) /* {{{ */
{
if (Z_REFCOUNT_P(op) == 0) {
GC_REMOVE_ZVAL_FROM_BUFFER(op);
zval_dtor(op);
FREE_ZVAL(op);
} else {
zval_ptr_dtor(&op);
}
}
/* }}} */
ZEND_API int compare_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
int ret;
int converted = 0;
zval op1_copy, op2_copy;
zval *op_free;
while (1) {
switch (TYPE_PAIR(Z_TYPE_P(op1), Z_TYPE_P(op2))) {
case TYPE_PAIR(IS_LONG, IS_LONG):
ZVAL_LONG(result, Z_LVAL_P(op1)>Z_LVAL_P(op2)?1:(Z_LVAL_P(op1)<Z_LVAL_P(op2)?-1:0));
return SUCCESS;
case TYPE_PAIR(IS_DOUBLE, IS_LONG):
Z_DVAL_P(result) = Z_DVAL_P(op1) - (double)Z_LVAL_P(op2);
ZVAL_LONG(result, ZEND_NORMALIZE_BOOL(Z_DVAL_P(result)));
return SUCCESS;
case TYPE_PAIR(IS_LONG, IS_DOUBLE):
Z_DVAL_P(result) = (double)Z_LVAL_P(op1) - Z_DVAL_P(op2);
ZVAL_LONG(result, ZEND_NORMALIZE_BOOL(Z_DVAL_P(result)));
return SUCCESS;
case TYPE_PAIR(IS_DOUBLE, IS_DOUBLE):
Z_DVAL_P(result) = Z_DVAL_P(op1) - Z_DVAL_P(op2);
ZVAL_LONG(result, ZEND_NORMALIZE_BOOL(Z_DVAL_P(result)));
return SUCCESS;
case TYPE_PAIR(IS_ARRAY, IS_ARRAY):
zend_compare_arrays(result, op1, op2 TSRMLS_CC);
return SUCCESS;
case TYPE_PAIR(IS_NULL, IS_NULL):
ZVAL_LONG(result, 0);
return SUCCESS;
case TYPE_PAIR(IS_NULL, IS_BOOL):
ZVAL_LONG(result, Z_LVAL_P(op2) ? -1 : 0);
return SUCCESS;
case TYPE_PAIR(IS_BOOL, IS_NULL):
ZVAL_LONG(result, Z_LVAL_P(op1) ? 1 : 0);
return SUCCESS;
case TYPE_PAIR(IS_BOOL, IS_BOOL):
ZVAL_LONG(result, ZEND_NORMALIZE_BOOL(Z_LVAL_P(op1) - Z_LVAL_P(op2)));
return SUCCESS;
case TYPE_PAIR(IS_STRING, IS_STRING):
zendi_smart_strcmp(result, op1, op2);
return SUCCESS;
case TYPE_PAIR(IS_NULL, IS_STRING):
ZVAL_LONG(result, zend_binary_strcmp("", 0, Z_STRVAL_P(op2), Z_STRLEN_P(op2)));
return SUCCESS;
case TYPE_PAIR(IS_STRING, IS_NULL):
ZVAL_LONG(result, zend_binary_strcmp(Z_STRVAL_P(op1), Z_STRLEN_P(op1), "", 0));
return SUCCESS;
case TYPE_PAIR(IS_OBJECT, IS_NULL):
ZVAL_LONG(result, 1);
return SUCCESS;
case TYPE_PAIR(IS_NULL, IS_OBJECT):
ZVAL_LONG(result, -1);
return SUCCESS;
case TYPE_PAIR(IS_OBJECT, IS_OBJECT):
/* If both are objects sharing the same comparision handler then use is */
if (Z_OBJ_HANDLER_P(op1,compare_objects) == Z_OBJ_HANDLER_P(op2,compare_objects)) {
if (Z_OBJ_HANDLE_P(op1) == Z_OBJ_HANDLE_P(op2)) {
/* object handles are identical, apprently this is the same object */
ZVAL_LONG(result, 0);
return SUCCESS;
}
ZVAL_LONG(result, Z_OBJ_HT_P(op1)->compare_objects(op1, op2 TSRMLS_CC));
return SUCCESS;
}
/* break missing intentionally */
default:
if (Z_TYPE_P(op1) == IS_OBJECT) {
if (Z_OBJ_HT_P(op1)->get) {
op_free = Z_OBJ_HT_P(op1)->get(op1 TSRMLS_CC);
ret = compare_function(result, op_free, op2 TSRMLS_CC);
zend_free_obj_get_result(op_free TSRMLS_CC);
return ret;
} else if (Z_TYPE_P(op2) != IS_OBJECT && Z_OBJ_HT_P(op1)->cast_object) {
ALLOC_INIT_ZVAL(op_free);
if (Z_OBJ_HT_P(op1)->cast_object(op1, op_free, Z_TYPE_P(op2) TSRMLS_CC) == FAILURE) {
ZVAL_LONG(result, 1);
zend_free_obj_get_result(op_free TSRMLS_CC);
return SUCCESS;
}
ret = compare_function(result, op_free, op2 TSRMLS_CC);
zend_free_obj_get_result(op_free TSRMLS_CC);
return ret;
}
}
if (Z_TYPE_P(op2) == IS_OBJECT) {
if (Z_OBJ_HT_P(op2)->get) {
op_free = Z_OBJ_HT_P(op2)->get(op2 TSRMLS_CC);
ret = compare_function(result, op1, op_free TSRMLS_CC);
zend_free_obj_get_result(op_free TSRMLS_CC);
return ret;
} else if (Z_TYPE_P(op1) != IS_OBJECT && Z_OBJ_HT_P(op2)->cast_object) {
ALLOC_INIT_ZVAL(op_free);
if (Z_OBJ_HT_P(op2)->cast_object(op2, op_free, Z_TYPE_P(op1) TSRMLS_CC) == FAILURE) {
ZVAL_LONG(result, -1);
zend_free_obj_get_result(op_free TSRMLS_CC);
return SUCCESS;
}
ret = compare_function(result, op1, op_free TSRMLS_CC);
zend_free_obj_get_result(op_free TSRMLS_CC);
return ret;
}
}
if (!converted) {
if (Z_TYPE_P(op1) == IS_NULL) {
zendi_convert_to_boolean(op2, op2_copy, result);
ZVAL_LONG(result, Z_LVAL_P(op2) ? -1 : 0);
return SUCCESS;
} else if (Z_TYPE_P(op2) == IS_NULL) {
zendi_convert_to_boolean(op1, op1_copy, result);
ZVAL_LONG(result, Z_LVAL_P(op1) ? 1 : 0);
return SUCCESS;
} else if (Z_TYPE_P(op1) == IS_BOOL) {
zendi_convert_to_boolean(op2, op2_copy, result);
ZVAL_LONG(result, ZEND_NORMALIZE_BOOL(Z_LVAL_P(op1) - Z_LVAL_P(op2)));
return SUCCESS;
} else if (Z_TYPE_P(op2) == IS_BOOL) {
zendi_convert_to_boolean(op1, op1_copy, result);
ZVAL_LONG(result, ZEND_NORMALIZE_BOOL(Z_LVAL_P(op1) - Z_LVAL_P(op2)));
return SUCCESS;
} else {
zendi_convert_scalar_to_number(op1, op1_copy, result);
zendi_convert_scalar_to_number(op2, op2_copy, result);
converted = 1;
}
} else if (Z_TYPE_P(op1)==IS_ARRAY) {
ZVAL_LONG(result, 1);
return SUCCESS;
} else if (Z_TYPE_P(op2)==IS_ARRAY) {
ZVAL_LONG(result, -1);
return SUCCESS;
} else if (Z_TYPE_P(op1)==IS_OBJECT) {
ZVAL_LONG(result, 1);
return SUCCESS;
} else if (Z_TYPE_P(op2)==IS_OBJECT) {
ZVAL_LONG(result, -1);
return SUCCESS;
} else {
ZVAL_LONG(result, 0);
return FAILURE;
}
}
}
}
/* }}} */
static int hash_zval_identical_function(const zval **z1, const zval **z2) /* {{{ */
{
zval result;
TSRMLS_FETCH();
/* is_identical_function() returns 1 in case of identity and 0 in case
* of a difference;
* whereas this comparison function is expected to return 0 on identity,
* and non zero otherwise.
*/
if (is_identical_function(&result, (zval *) *z1, (zval *) *z2 TSRMLS_CC)==FAILURE) {
return 1;
}
return !Z_LVAL(result);
}
/* }}} */
ZEND_API int is_identical_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
Z_TYPE_P(result) = IS_BOOL;
if (Z_TYPE_P(op1) != Z_TYPE_P(op2)) {
Z_LVAL_P(result) = 0;
return SUCCESS;
}
switch (Z_TYPE_P(op1)) {
case IS_NULL:
Z_LVAL_P(result) = 1;
break;
case IS_BOOL:
case IS_LONG:
case IS_RESOURCE:
Z_LVAL_P(result) = (Z_LVAL_P(op1) == Z_LVAL_P(op2));
break;
case IS_DOUBLE:
Z_LVAL_P(result) = (Z_DVAL_P(op1) == Z_DVAL_P(op2));
break;
case IS_STRING:
Z_LVAL_P(result) = ((Z_STRLEN_P(op1) == Z_STRLEN_P(op2))
&& (!memcmp(Z_STRVAL_P(op1), Z_STRVAL_P(op2), Z_STRLEN_P(op1))));
break;
case IS_ARRAY:
Z_LVAL_P(result) = zend_hash_compare(Z_ARRVAL_P(op1), Z_ARRVAL_P(op2), (compare_func_t) hash_zval_identical_function, 1 TSRMLS_CC)==0;
break;
case IS_OBJECT:
if (Z_OBJ_HT_P(op1) == Z_OBJ_HT_P(op2)) {
Z_LVAL_P(result) = (Z_OBJ_HANDLE_P(op1) == Z_OBJ_HANDLE_P(op2));
} else {
Z_LVAL_P(result) = 0;
}
break;
default:
Z_LVAL_P(result) = 0;
return FAILURE;
}
return SUCCESS;
}
/* }}} */
ZEND_API int is_not_identical_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
if (is_identical_function(result, op1, op2 TSRMLS_CC) == FAILURE) {
return FAILURE;
}
Z_LVAL_P(result) = !Z_LVAL_P(result);
return SUCCESS;
}
/* }}} */
ZEND_API int is_equal_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
if (compare_function(result, op1, op2 TSRMLS_CC) == FAILURE) {
return FAILURE;
}
ZVAL_BOOL(result, (Z_LVAL_P(result) == 0));
return SUCCESS;
}
/* }}} */
ZEND_API int is_not_equal_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
if (compare_function(result, op1, op2 TSRMLS_CC) == FAILURE) {
return FAILURE;
}
ZVAL_BOOL(result, (Z_LVAL_P(result) != 0));
return SUCCESS;
}
/* }}} */
ZEND_API int is_smaller_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
if (compare_function(result, op1, op2 TSRMLS_CC) == FAILURE) {
return FAILURE;
}
ZVAL_BOOL(result, (Z_LVAL_P(result) < 0));
return SUCCESS;
}
/* }}} */
ZEND_API int is_smaller_or_equal_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{{ */
{
if (compare_function(result, op1, op2 TSRMLS_CC) == FAILURE) {
return FAILURE;
}
ZVAL_BOOL(result, (Z_LVAL_P(result) <= 0));
return SUCCESS;
}
/* }}} */
ZEND_API zend_bool instanceof_function_ex(const zend_class_entry *instance_ce, const zend_class_entry *ce, zend_bool interfaces_only TSRMLS_DC) /* {{{ */
{
zend_uint i;
for (i=0; i<instance_ce->num_interfaces; i++) {
if (instanceof_function(instance_ce->interfaces[i], ce TSRMLS_CC)) {
return 1;
}
}
if (!interfaces_only) {
while (instance_ce) {
if (instance_ce == ce) {
return 1;
}
instance_ce = instance_ce->parent;
}
}
return 0;
}
/* }}} */
ZEND_API zend_bool instanceof_function(const zend_class_entry *instance_ce, const zend_class_entry *ce TSRMLS_DC) /* {{{ */
{
return instanceof_function_ex(instance_ce, ce, 0 TSRMLS_CC);
}
/* }}} */
#define LOWER_CASE 1
#define UPPER_CASE 2
#define NUMERIC 3
static void increment_string(zval *str) /* {{{ */
{
int carry=0;
int pos=Z_STRLEN_P(str)-1;
char *s=Z_STRVAL_P(str);
char *t;
int last=0; /* Shut up the compiler warning */
int ch;
if (Z_STRLEN_P(str) == 0) {
STR_FREE(Z_STRVAL_P(str));
Z_STRVAL_P(str) = estrndup("1", sizeof("1")-1);
Z_STRLEN_P(str) = 1;
return;
}
while (pos >= 0) {
ch = s[pos];
if (ch >= 'a' && ch <= 'z') {
if (ch == 'z') {
s[pos] = 'a';
carry=1;
} else {
s[pos]++;
carry=0;
}
last=LOWER_CASE;
} else if (ch >= 'A' && ch <= 'Z') {
if (ch == 'Z') {
s[pos] = 'A';
carry=1;
} else {
s[pos]++;
carry=0;
}
last=UPPER_CASE;
} else if (ch >= '0' && ch <= '9') {
if (ch == '9') {
s[pos] = '0';
carry=1;
} else {
s[pos]++;
carry=0;
}
last = NUMERIC;
} else {
carry=0;
break;
}
if (carry == 0) {
break;
}
pos--;
}
if (carry) {
t = (char *) emalloc(Z_STRLEN_P(str)+1+1);
memcpy(t+1, Z_STRVAL_P(str), Z_STRLEN_P(str));
Z_STRLEN_P(str)++;
t[Z_STRLEN_P(str)] = '\0';
switch (last) {
case NUMERIC:
t[0] = '1';
break;
case UPPER_CASE:
t[0] = 'A';
break;
case LOWER_CASE:
t[0] = 'a';
break;
}
STR_FREE(Z_STRVAL_P(str));
Z_STRVAL_P(str) = t;
}
}
/* }}} */
ZEND_API int increment_function(zval *op1) /* {{{ */
{
switch (Z_TYPE_P(op1)) {
case IS_LONG:
if (Z_LVAL_P(op1) == LONG_MAX) {
/* switch to double */
double d = (double)Z_LVAL_P(op1);
ZVAL_DOUBLE(op1, d+1);
} else {
Z_LVAL_P(op1)++;
}
break;
case IS_DOUBLE:
Z_DVAL_P(op1) = Z_DVAL_P(op1) + 1;
break;
case IS_NULL:
ZVAL_LONG(op1, 1);
break;
case IS_STRING: {
long lval;
double dval;
switch (is_numeric_string(Z_STRVAL_P(op1), Z_STRLEN_P(op1), &lval, &dval, 0)) {
case IS_LONG:
efree(Z_STRVAL_P(op1));
if (lval == LONG_MAX) {
/* switch to double */
double d = (double)lval;
ZVAL_DOUBLE(op1, d+1);
} else {
ZVAL_LONG(op1, lval+1);
}
break;
case IS_DOUBLE:
efree(Z_STRVAL_P(op1));
ZVAL_DOUBLE(op1, dval+1);
break;
default:
/* Perl style string increment */
increment_string(op1);
break;
}
}
break;
default:
return FAILURE;
}
return SUCCESS;
}
/* }}} */
ZEND_API int decrement_function(zval *op1) /* {{{ */
{
long lval;
double dval;
switch (Z_TYPE_P(op1)) {
case IS_LONG:
if (Z_LVAL_P(op1) == LONG_MIN) {
double d = (double)Z_LVAL_P(op1);
ZVAL_DOUBLE(op1, d-1);
} else {
Z_LVAL_P(op1)--;
}
break;
case IS_DOUBLE:
Z_DVAL_P(op1) = Z_DVAL_P(op1) - 1;
break;
case IS_STRING: /* Like perl we only support string increment */
if (Z_STRLEN_P(op1) == 0) { /* consider as 0 */
STR_FREE(Z_STRVAL_P(op1));
ZVAL_LONG(op1, -1);
break;
}
switch (is_numeric_string(Z_STRVAL_P(op1), Z_STRLEN_P(op1), &lval, &dval, 0)) {
case IS_LONG:
STR_FREE(Z_STRVAL_P(op1));
if (lval == LONG_MIN) {
double d = (double)lval;
ZVAL_DOUBLE(op1, d-1);
} else {
ZVAL_LONG(op1, lval-1);
}
break;
case IS_DOUBLE:
STR_FREE(Z_STRVAL_P(op1));
ZVAL_DOUBLE(op1, dval - 1);
break;
}
break;
default:
return FAILURE;
}
return SUCCESS;
}
/* }}} */
ZEND_API int zval_is_true(zval *op) /* {{{ */
{
convert_to_boolean(op);
return (Z_LVAL_P(op) ? 1 : 0);
}
/* }}} */
#ifdef ZEND_USE_TOLOWER_L
ZEND_API void zend_update_current_locale(void) /* {{{ */
{
current_locale = _get_current_locale();
}
/* }}} */
#endif
ZEND_API char *zend_str_tolower_copy(char *dest, const char *source, unsigned int length) /* {{{ */
{
register unsigned char *str = (unsigned char*)source;
register unsigned char *result = (unsigned char*)dest;
register unsigned char *end = str + length;
while (str < end) {
*result++ = zend_tolower((int)*str++);
}
*result = '\0';
return dest;
}
/* }}} */
ZEND_API char *zend_str_tolower_dup(const char *source, unsigned int length) /* {{{ */
{
return zend_str_tolower_copy((char *)emalloc(length+1), source, length);
}
/* }}} */
ZEND_API void zend_str_tolower(char *str, unsigned int length) /* {{{ */
{
register unsigned char *p = (unsigned char*)str;
register unsigned char *end = p + length;
while (p < end) {
*p = zend_tolower((int)*p);
p++;
}
}
/* }}} */
ZEND_API int zend_binary_strcmp(const char *s1, uint len1, const char *s2, uint len2) /* {{{ */
{
int retval;
retval = memcmp(s1, s2, MIN(len1, len2));
if (!retval) {
return (len1 - len2);
} else {
return retval;
}
}
/* }}} */
ZEND_API int zend_binary_strncmp(const char *s1, uint len1, const char *s2, uint len2, uint length) /* {{{ */
{
int retval;
retval = memcmp(s1, s2, MIN(length, MIN(len1, len2)));
if (!retval) {
return (MIN(length, len1) - MIN(length, len2));
} else {
return retval;
}
}
/* }}} */
ZEND_API int zend_binary_strcasecmp(const char *s1, uint len1, const char *s2, uint len2) /* {{{ */
{
int len;
int c1, c2;
len = MIN(len1, len2);
while (len--) {
c1 = zend_tolower((int)*(unsigned char *)s1++);
c2 = zend_tolower((int)*(unsigned char *)s2++);
if (c1 != c2) {
return c1 - c2;
}
}
return len1 - len2;
}
/* }}} */
ZEND_API int zend_binary_strncasecmp(const char *s1, uint len1, const char *s2, uint len2, uint length) /* {{{ */
{
int len;
int c1, c2;
len = MIN(length, MIN(len1, len2));
while (len--) {
c1 = zend_tolower((int)*(unsigned char *)s1++);
c2 = zend_tolower((int)*(unsigned char *)s2++);
if (c1 != c2) {
return c1 - c2;
}
}
return MIN(length, len1) - MIN(length, len2);
}
/* }}} */
ZEND_API int zend_binary_zval_strcmp(zval *s1, zval *s2) /* {{{ */
{
return zend_binary_strcmp(Z_STRVAL_P(s1), Z_STRLEN_P(s1), Z_STRVAL_P(s2), Z_STRLEN_P(s2));
}
/* }}} */
ZEND_API int zend_binary_zval_strncmp(zval *s1, zval *s2, zval *s3) /* {{{ */
{
return zend_binary_strncmp(Z_STRVAL_P(s1), Z_STRLEN_P(s1), Z_STRVAL_P(s2), Z_STRLEN_P(s2), Z_LVAL_P(s3));
}
/* }}} */
ZEND_API int zend_binary_zval_strcasecmp(zval *s1, zval *s2) /* {{{ */
{
return zend_binary_strcasecmp(Z_STRVAL_P(s1), Z_STRLEN_P(s1), Z_STRVAL_P(s2), Z_STRLEN_P(s2));
}
/* }}} */
ZEND_API int zend_binary_zval_strncasecmp(zval *s1, zval *s2, zval *s3) /* {{{ */
{
return zend_binary_strncasecmp(Z_STRVAL_P(s1), Z_STRLEN_P(s1), Z_STRVAL_P(s2), Z_STRLEN_P(s2), Z_LVAL_P(s3));
}
/* }}} */
ZEND_API void zendi_smart_strcmp(zval *result, zval *s1, zval *s2) /* {{{ */
{
int ret1, ret2;
long lval1, lval2;
double dval1, dval2;
if ((ret1=is_numeric_string(Z_STRVAL_P(s1), Z_STRLEN_P(s1), &lval1, &dval1, 0)) &&
(ret2=is_numeric_string(Z_STRVAL_P(s2), Z_STRLEN_P(s2), &lval2, &dval2, 0))) {
if ((ret1==IS_DOUBLE) || (ret2==IS_DOUBLE)) {
if (ret1!=IS_DOUBLE) {
dval1 = (double) lval1;
} else if (ret2!=IS_DOUBLE) {
dval2 = (double) lval2;
} else if (dval1 == dval2 && !zend_finite(dval1)) {
/* Both values overflowed and have the same sign,
* so a numeric comparison would be inaccurate */
goto string_cmp;
}
Z_DVAL_P(result) = dval1 - dval2;
ZVAL_LONG(result, ZEND_NORMALIZE_BOOL(Z_DVAL_P(result)));
} else { /* they both have to be long's */
ZVAL_LONG(result, lval1 > lval2 ? 1 : (lval1 < lval2 ? -1 : 0));
}
} else {
string_cmp:
Z_LVAL_P(result) = zend_binary_zval_strcmp(s1, s2);
ZVAL_LONG(result, ZEND_NORMALIZE_BOOL(Z_LVAL_P(result)));
}
}
/* }}} */
static int hash_zval_compare_function(const zval **z1, const zval **z2 TSRMLS_DC) /* {{{ */
{
zval result;
if (compare_function(&result, (zval *) *z1, (zval *) *z2 TSRMLS_CC)==FAILURE) {
return 1;
}
return Z_LVAL(result);
}
/* }}} */
ZEND_API int zend_compare_symbol_tables_i(HashTable *ht1, HashTable *ht2 TSRMLS_DC) /* {{{ */
{
return zend_hash_compare(ht1, ht2, (compare_func_t) hash_zval_compare_function, 0 TSRMLS_CC);
}
/* }}} */
ZEND_API void zend_compare_symbol_tables(zval *result, HashTable *ht1, HashTable *ht2 TSRMLS_DC) /* {{{ */
{
ZVAL_LONG(result, zend_hash_compare(ht1, ht2, (compare_func_t) hash_zval_compare_function, 0 TSRMLS_CC));
}
/* }}} */
ZEND_API void zend_compare_arrays(zval *result, zval *a1, zval *a2 TSRMLS_DC) /* {{{ */
{
zend_compare_symbol_tables(result, Z_ARRVAL_P(a1), Z_ARRVAL_P(a2) TSRMLS_CC);
}
/* }}} */
ZEND_API void zend_compare_objects(zval *result, zval *o1, zval *o2 TSRMLS_DC) /* {{{ */
{
Z_TYPE_P(result) = IS_LONG;
if (Z_OBJ_HANDLE_P(o1) == Z_OBJ_HANDLE_P(o2)) {
Z_LVAL_P(result) = 0;
return;
}
if (Z_OBJ_HT_P(o1)->compare_objects == NULL) {
Z_LVAL_P(result) = 1;
} else {
Z_LVAL_P(result) = Z_OBJ_HT_P(o1)->compare_objects(o1, o2 TSRMLS_CC);
}
}
/* }}} */
ZEND_API void zend_locale_sprintf_double(zval *op ZEND_FILE_LINE_DC) /* {{{ */
{
TSRMLS_FETCH();
Z_STRLEN_P(op) = zend_spprintf(&Z_STRVAL_P(op), 0, "%.*G", (int) EG(precision), (double)Z_DVAL_P(op));
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*/
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