/
zend_operators.c
1986 lines (1710 loc) · 48 KB
/
zend_operators.c
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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2004 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_fast_cache.h"
#include "zend_API.h"
#include "zend_multiply.h"
#include "zend_strtod.h"
#define LONG_SIGN_MASK (1L << (8*sizeof(long)-1))
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 'k':
case 'K':
retval *= 1024;
break;
case 'm':
case 'M':
retval *= 1048576;
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 (op->type) {
case IS_STRING:
{
char *strval;
strval = op->value.str.val;
switch ((op->type=is_numeric_string(strval, op->value.str.len, &op->value.lval, &op->value.dval, 1))) {
case IS_DOUBLE:
case IS_LONG:
break;
default:
op->value.lval = strtol(op->value.str.val, NULL, 10);
op->type = IS_LONG;
break;
}
STR_FREE(strval);
break;
}
case IS_BOOL:
op->type = IS_LONG;
break;
case IS_RESOURCE:
zend_list_delete(op->value.lval);
op->type = IS_LONG;
break;
case IS_OBJECT:
convert_to_long_base(op, 10);
break;
case IS_NULL:
op->type = IS_LONG;
op->value.lval = 0;
break;
}
}
#define zendi_convert_scalar_to_number(op, holder, result) \
if (op==result) { \
if (op->type != IS_LONG) { \
convert_scalar_to_number(op TSRMLS_CC); \
} \
} else { \
switch ((op)->type) { \
case IS_STRING: \
{ \
switch (((holder).type=is_numeric_string((op)->value.str.val, (op)->value.str.len, &(holder).value.lval, &(holder).value.dval, 1))) { \
case IS_DOUBLE: \
case IS_LONG: \
break; \
default: \
(holder).value.lval = strtol((op)->value.str.val, NULL, 10); \
(holder).type = IS_LONG; \
break; \
} \
(op) = &(holder); \
break; \
} \
case IS_BOOL: \
case IS_RESOURCE: \
(holder).value.lval = (op)->value.lval; \
(holder).type = IS_LONG; \
(op) = &(holder); \
break; \
case IS_NULL: \
(holder).value.lval = 0; \
(holder).type = IS_LONG; \
(op) = &(holder); \
break; \
case IS_OBJECT: \
(holder) = (*(op)); \
zval_copy_ctor(&(holder)); \
convert_to_long_base(&(holder), 10); \
if ((holder).type == IS_LONG) { \
(op) = &(holder); \
} \
break; \
} \
}
#define DVAL_TO_LVAL(d, l) (l) = (d) > LONG_MAX ? (unsigned long) (d) : (long) (d)
#define zendi_convert_to_long(op, holder, result) \
if (op==result) { \
convert_to_long(op); \
} else if ((op)->type != IS_LONG) { \
switch ((op)->type) { \
case IS_NULL: \
(holder).value.lval = 0; \
break; \
case IS_DOUBLE: \
DVAL_TO_LVAL((op)->value.dval, (holder).value.lval); \
break; \
case IS_STRING: \
(holder).value.lval = strtol((op)->value.str.val, NULL, 10); \
break; \
case IS_ARRAY: \
(holder).value.lval = (zend_hash_num_elements((op)->value.ht)?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: \
(holder).value.lval = (op)->value.lval; \
break; \
default: \
zend_error(E_WARNING, "Cannot convert to ordinal value"); \
(holder).value.lval = 0; \
break; \
} \
(holder).type = IS_LONG; \
(op) = &(holder); \
}
#define zendi_convert_to_boolean(op, holder, result) \
if (op==result) { \
convert_to_boolean(op); \
} else if ((op)->type != IS_BOOL) { \
switch ((op)->type) { \
case IS_NULL: \
(holder).value.lval = 0; \
break; \
case IS_RESOURCE: \
case IS_LONG: \
(holder).value.lval = ((op)->value.lval ? 1 : 0); \
break; \
case IS_DOUBLE: \
(holder).value.lval = ((op)->value.dval ? 1 : 0); \
break; \
case IS_STRING: \
if ((op)->value.str.len == 0 \
|| ((op)->value.str.len==1 && (op)->value.str.val[0]=='0')) { \
(holder).value.lval = 0; \
} else { \
(holder).value.lval = 1; \
} \
break; \
case IS_ARRAY: \
(holder).value.lval = (zend_hash_num_elements((op)->value.ht)?1:0); \
break; \
case IS_OBJECT: \
(holder) = (*(op)); \
zval_copy_ctor(&(holder)); \
convert_to_boolean(&(holder)); \
break; \
default: \
(holder).value.lval = 0; \
break; \
} \
(holder).type = IS_BOOL; \
(op) = &(holder); \
}
#define convert_object_to_type(op, ctype, conv_func) \
if (Z_OBJ_HT_P(op)->cast_object) { \
if (Z_OBJ_HT_P(op)->cast_object(op, op, ctype, 1 TSRMLS_CC) == SUCCESS) { \
op->type = ctype; \
} \
} 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)
{
convert_to_long_base(op, 10);
}
ZEND_API void convert_to_long_base(zval *op, int base)
{
char *strval;
long tmp;
switch (op->type) {
case IS_NULL:
op->value.lval = 0;
break;
case IS_RESOURCE: {
TSRMLS_FETCH();
zend_list_delete(op->value.lval);
}
/* break missing intentionally */
case IS_BOOL:
case IS_LONG:
break;
case IS_DOUBLE:
DVAL_TO_LVAL(op->value.dval, op->value.lval);
break;
case IS_STRING:
strval = op->value.str.val;
op->value.lval = strtol(strval, NULL, base);
STR_FREE(strval);
break;
case IS_ARRAY:
tmp = (zend_hash_num_elements(op->value.ht)?1:0);
zval_dtor(op);
op->value.lval = tmp;
break;
case IS_OBJECT:
{
int retval = 1;
TSRMLS_FETCH();
convert_object_to_type(op, IS_LONG, convert_to_long);
if (op->type == IS_LONG) {
return;
}
if (EG(ze1_compatibility_mode)) {
HashTable *ht = Z_OBJPROP_P(op);
if (ht) {
retval = (zend_hash_num_elements(ht)?1:0);
}
zval_dtor(op);
ZVAL_LONG(op, retval);
return;
} else {
/* we cannot convert it to long */
return;
}
}
default:
zend_error(E_WARNING, "Cannot convert to ordinal value");
zval_dtor(op);
op->value.lval = 0;
break;
}
op->type = IS_LONG;
}
ZEND_API void convert_to_double(zval *op)
{
char *strval;
double tmp;
switch (op->type) {
case IS_NULL:
op->value.dval = 0.0;
break;
case IS_RESOURCE: {
TSRMLS_FETCH();
zend_list_delete(op->value.lval);
}
/* break missing intentionally */
case IS_BOOL:
case IS_LONG:
op->value.dval = (double) op->value.lval;
break;
case IS_DOUBLE:
break;
case IS_STRING:
strval = op->value.str.val;
op->value.dval = zend_strtod(strval, NULL);
STR_FREE(strval);
break;
case IS_ARRAY:
tmp = (zend_hash_num_elements(op->value.ht)?1:0);
zval_dtor(op);
op->value.dval = tmp;
break;
case IS_OBJECT:
{
double retval = 1.0;
TSRMLS_FETCH();
convert_object_to_type(op, IS_DOUBLE, convert_to_double);
if (op->type == IS_DOUBLE) {
return;
}
if (EG(ze1_compatibility_mode)) {
HashTable *ht = Z_OBJPROP_P(op);
if (ht) {
retval = (zend_hash_num_elements(ht)?1.0:0.0);
}
} else {
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)", op->type);
zval_dtor(op);
op->value.dval = 0;
break;
}
op->type = IS_DOUBLE;
}
ZEND_API void convert_to_null(zval *op)
{
if (op->type == IS_OBJECT) {
if (Z_OBJ_HT_P(op)->cast_object) {
TSRMLS_FETCH();
if (Z_OBJ_HT_P(op)->cast_object(op, op, IS_NULL, 1 TSRMLS_CC) == SUCCESS) {
return;
}
}
}
zval_dtor(op);
op->type = IS_NULL;
}
ZEND_API void convert_to_boolean(zval *op)
{
char *strval;
int tmp;
switch (op->type) {
case IS_BOOL:
break;
case IS_NULL:
op->value.lval = 0;
break;
case IS_RESOURCE: {
TSRMLS_FETCH();
zend_list_delete(op->value.lval);
}
/* break missing intentionally */
case IS_LONG:
op->value.lval = (op->value.lval ? 1 : 0);
break;
case IS_DOUBLE:
op->value.lval = (op->value.dval ? 1 : 0);
break;
case IS_STRING:
strval = op->value.str.val;
if (op->value.str.len == 0
|| (op->value.str.len==1 && op->value.str.val[0]=='0')) {
op->value.lval = 0;
} else {
op->value.lval = 1;
}
STR_FREE(strval);
break;
case IS_ARRAY:
tmp = (zend_hash_num_elements(op->value.ht)?1:0);
zval_dtor(op);
op->value.lval = tmp;
break;
case IS_OBJECT:
{
zend_bool retval = 1;
TSRMLS_FETCH();
convert_object_to_type(op, IS_BOOL, convert_to_double);
if (op->type == IS_BOOL) {
return;
}
if (EG(ze1_compatibility_mode)) {
HashTable *ht = Z_OBJPROP_P(op);
if (ht) {
retval = (zend_hash_num_elements(ht)?1:0);
}
}
zval_dtor(op);
ZVAL_BOOL(op, retval);
break;
}
default:
zval_dtor(op);
op->value.lval = 0;
break;
}
op->type = IS_BOOL;
}
ZEND_API void _convert_to_string(zval *op ZEND_FILE_LINE_DC)
{
long lval;
double dval;
switch (op->type) {
case IS_NULL:
op->value.str.val = empty_string;
op->value.str.len = 0;
break;
case IS_STRING:
break;
case IS_BOOL:
if (op->value.lval) {
op->value.str.val = estrndup_rel("1", 1);
op->value.str.len = 1;
} else {
op->value.str.val = empty_string;
op->value.str.len = 0;
}
break;
case IS_RESOURCE: {
long tmp = op->value.lval;
TSRMLS_FETCH();
zend_list_delete(op->value.lval);
op->value.str.val = (char *) emalloc(sizeof("Resource id #")-1 + MAX_LENGTH_OF_LONG);
op->value.str.len = sprintf(op->value.str.val, "Resource id #%ld", tmp);
break;
}
case IS_LONG:
lval = op->value.lval;
op->value.str.val = (char *) emalloc_rel(MAX_LENGTH_OF_LONG + 1);
op->value.str.len = zend_sprintf(op->value.str.val, "%ld", lval); /* SAFE */
break;
case IS_DOUBLE: {
TSRMLS_FETCH();
dval = op->value.dval;
op->value.str.val = (char *) emalloc_rel(MAX_LENGTH_OF_DOUBLE + EG(precision) + 1);
op->value.str.len = zend_sprintf(op->value.str.val, "%.*G", (int) EG(precision), dval); /* SAFE */
/* %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);
op->value.str.val = estrndup_rel("Array", sizeof("Array")-1);
op->value.str.len = sizeof("Array")-1;
break;
case IS_OBJECT: {
TSRMLS_FETCH();
convert_object_to_type(op, IS_STRING, convert_to_string);
if (op->type == IS_STRING) {
return;
}
zend_error(E_NOTICE, "Object of class %s to string conversion", Z_OBJCE_P(op)->name);
zval_dtor(op);
op->value.str.val = estrndup_rel("Object", sizeof("Object")-1);
op->value.str.len = sizeof("Object")-1;
break;
}
default:
zval_dtor(op);
ZVAL_BOOL(op, 0);
break;
}
op->type = IS_STRING;
}
static void convert_scalar_to_array(zval *op, int type)
{
zval *entry;
ALLOC_ZVAL(entry);
*entry = *op;
INIT_PZVAL(entry);
switch (type) {
case IS_ARRAY:
ALLOC_HASHTABLE(op->value.ht);
zend_hash_init(op->value.ht, 0, NULL, ZVAL_PTR_DTOR, 0);
zend_hash_index_update(op->value.ht, 0, (void *) &entry, sizeof(zval *), NULL);
op->type = IS_ARRAY;
break;
case IS_OBJECT:
{
/* OBJECTS_OPTIMIZE */
TSRMLS_FETCH();
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 (op->type) {
case IS_ARRAY:
return;
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 (op->type == IS_ARRAY) {
return;
}
}
zval_dtor(op);
op->type = IS_ARRAY;
op->value.ht = ht;
}
return;
case IS_NULL:
ALLOC_HASHTABLE(op->value.ht);
zend_hash_init(op->value.ht, 0, NULL, ZVAL_PTR_DTOR, 0);
op->type = IS_ARRAY;
break;
default:
convert_scalar_to_array(op, IS_ARRAY);
break;
}
}
ZEND_API void convert_to_object(zval *op)
{
switch (op->type) {
case IS_ARRAY:
{
/* OBJECTS_OPTIMIZE */
TSRMLS_FETCH();
object_and_properties_init(op, zend_standard_class_def, op->value.ht);
return;
break;
}
case IS_OBJECT:
return;
case IS_NULL:
{
/* OBJECTS_OPTIMIZE */
TSRMLS_FETCH();
object_init(op);
break;
}
default:
convert_scalar_to_array(op, IS_OBJECT);
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;
if (op1->type == IS_ARRAY && op2->type == 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(result->value.ht, op2->value.ht, (void (*)(void *pData)) zval_add_ref, (void *) &tmp, sizeof(zval *), 0);
return SUCCESS;
}
zendi_convert_scalar_to_number(op1, op1_copy, result);
zendi_convert_scalar_to_number(op2, op2_copy, result);
if (op1->type == IS_LONG && op2->type == IS_LONG) {
long lval = op1->value.lval + op2->value.lval;
/* check for overflow by comparing sign bits */
if ( (op1->value.lval & LONG_SIGN_MASK) == (op2->value.lval & LONG_SIGN_MASK)
&& (op1->value.lval & LONG_SIGN_MASK) != (lval & LONG_SIGN_MASK)) {
result->value.dval = (double) op1->value.lval + (double) op2->value.lval;
result->type = IS_DOUBLE;
} else {
result->value.lval = lval;
result->type = IS_LONG;
}
return SUCCESS;
}
if ((op1->type == IS_DOUBLE && op2->type == IS_LONG)
|| (op1->type == IS_LONG && op2->type == IS_DOUBLE)) {
result->value.dval = (op1->type == IS_LONG ?
(((double) op1->value.lval) + op2->value.dval) :
(op1->value.dval + ((double) op2->value.lval)));
result->type = IS_DOUBLE;
return SUCCESS;
}
if (op1->type == IS_DOUBLE && op2->type == IS_DOUBLE) {
result->type = IS_DOUBLE;
result->value.dval = op1->value.dval + op2->value.dval;
return SUCCESS;
}
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;
zendi_convert_scalar_to_number(op1, op1_copy, result);
zendi_convert_scalar_to_number(op2, op2_copy, result);
if (op1->type == IS_LONG && op2->type == IS_LONG) {
long lval = op1->value.lval - op2->value.lval;
/* check for overflow by comparing sign bits */
if ( (op1->value.lval & LONG_SIGN_MASK) != (op2->value.lval & LONG_SIGN_MASK)
&& (op1->value.lval & LONG_SIGN_MASK) != (lval & LONG_SIGN_MASK)) {
result->value.dval = (double) op1->value.lval - (double) op2->value.lval;
result->type = IS_DOUBLE;
} else {
result->value.lval = lval;
result->type = IS_LONG;
}
return SUCCESS;
}
if ((op1->type == IS_DOUBLE && op2->type == IS_LONG)
|| (op1->type == IS_LONG && op2->type == IS_DOUBLE)) {
result->value.dval = (op1->type == IS_LONG ?
(((double) op1->value.lval) - op2->value.dval) :
(op1->value.dval - ((double) op2->value.lval)));
result->type = IS_DOUBLE;
return SUCCESS;
}
if (op1->type == IS_DOUBLE && op2->type == IS_DOUBLE) {
result->type = IS_DOUBLE;
result->value.dval = op1->value.dval - op2->value.dval;
return SUCCESS;
}
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;
zendi_convert_scalar_to_number(op1, op1_copy, result);
zendi_convert_scalar_to_number(op2, op2_copy, result);
if (op1->type == IS_LONG && op2->type == IS_LONG) {
long overflow;
ZEND_SIGNED_MULTIPLY_LONG(op1->value.lval,op2->value.lval, result->value.lval,result->value.dval,overflow);
result->type = overflow ? IS_DOUBLE : IS_LONG;
return SUCCESS;
}
if ((op1->type == IS_DOUBLE && op2->type == IS_LONG)
|| (op1->type == IS_LONG && op2->type == IS_DOUBLE)) {
result->value.dval = (op1->type == IS_LONG ?
(((double) op1->value.lval) * op2->value.dval) :
(op1->value.dval * ((double) op2->value.lval)));
result->type = IS_DOUBLE;
return SUCCESS;
}
if (op1->type == IS_DOUBLE && op2->type == IS_DOUBLE) {
result->type = IS_DOUBLE;
result->value.dval = op1->value.dval * op2->value.dval;
return SUCCESS;
}
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;
zendi_convert_scalar_to_number(op1, op1_copy, result);
zendi_convert_scalar_to_number(op2, op2_copy, result);
if ((op2->type == IS_LONG && op2->value.lval == 0) || (op2->type == IS_DOUBLE && op2->value.dval == 0.0)) {
zend_error(E_WARNING, "Division by zero");
ZVAL_BOOL(result, 0);
return FAILURE; /* division by zero */
}
if (op1->type == IS_LONG && op2->type == IS_LONG) {
if (op1->value.lval % op2->value.lval == 0) { /* integer */
result->type = IS_LONG;
result->value.lval = op1->value.lval / op2->value.lval;
} else {
result->type = IS_DOUBLE;
result->value.dval = ((double) op1->value.lval) / op2->value.lval;
}
return SUCCESS;
}
if ((op1->type == IS_DOUBLE && op2->type == IS_LONG)
|| (op1->type == IS_LONG && op2->type == IS_DOUBLE)) {
result->value.dval = (op1->type == IS_LONG ?
(((double) op1->value.lval) / op2->value.dval) :
(op1->value.dval / ((double) op2->value.lval)));
result->type = IS_DOUBLE;
return SUCCESS;
}
if (op1->type == IS_DOUBLE && op2->type == IS_DOUBLE) {
result->type = IS_DOUBLE;
result->value.dval = op1->value.dval / op2->value.dval;
return SUCCESS;
}
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 (op2->value.lval == 0) {
ZVAL_BOOL(result, 0);
return FAILURE; /* modulus by zero */
}
if (abs(op2->value.lval) == 1) {
ZVAL_LONG(result, 0);
return SUCCESS;
}
result->type = IS_LONG;
result->value.lval = op1->value.lval % op2->value.lval;
return SUCCESS;
}
ZEND_API int boolean_xor_function(zval *result, zval *op1, zval *op2 TSRMLS_DC)
{
zval op1_copy, op2_copy;
result->type = IS_BOOL;
zendi_convert_to_boolean(op1, op1_copy, result);
zendi_convert_to_boolean(op2, op2_copy, result);
result->value.lval = op1->value.lval ^ op2->value.lval;
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);
result->type = IS_BOOL;
result->value.lval = !op1->value.lval;
return SUCCESS;
}
ZEND_API int bitwise_not_function(zval *result, zval *op1 TSRMLS_DC)
{
zval op1_copy = *op1;
op1 = &op1_copy;
if (op1->type == IS_DOUBLE) {
op1->value.lval = (long) op1->value.dval;
op1->type = IS_LONG;
}
if (op1->type == IS_LONG) {
result->value.lval = ~op1->value.lval;
result->type = IS_LONG;
return SUCCESS;
}
if (op1->type == IS_STRING) {
int i;
result->type = IS_STRING;
result->value.str.val = estrndup(op1->value.str.val, op1->value.str.len);
result->value.str.len = op1->value.str.len;
for (i = 0; i < op1->value.str.len; i++) {
result->value.str.val[i] = ~op1->value.str.val[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 (op1->type == IS_STRING && op2->type == IS_STRING) {
zval *longer, *shorter;
char *result_str;
int i, result_len;
if (op1->value.str.len >= op2->value.str.len) {
longer = op1;
shorter = op2;
} else {
longer = op2;
shorter = op1;
}
result->type = IS_STRING;
result_len = longer->value.str.len;
result_str = estrndup(longer->value.str.val, longer->value.str.len);
for (i = 0; i < shorter->value.str.len; i++) {
result_str[i] |= shorter->value.str.val[i];
}
if (result==op1) {
STR_FREE(result->value.str.val);
}
result->value.str.val = result_str;
result->value.str.len = result_len;