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php-src/Zend/zend_operators.c
Zeev Suraski 8ce8324e59 More TSRMLS_FETCH annihilation
2001-07-30 04:54:16 +00:00

1782 lines
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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2001 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 0.92 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available at through the world-wide-web at |
| http://www.zend.com/license/0_92.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> |
+----------------------------------------------------------------------+
*/
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <ctype.h>
#include <math.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"
#if 0&&WITH_BCMATH
#include "ext/bcmath/number.h"
#endif
ZEND_API int zend_atoi(const char *str, int str_len)
{
int retval;
if (!str_len) {
str_len = strlen(str);
}
retval = atoi(str);
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))) {
case IS_DOUBLE:
case IS_LONG:
break;
#if 0 && WITH_BCMATH
case FLAG_IS_BC:
op->type = IS_DOUBLE; /* may have lost significant digits */
break;
#endif
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_NULL:
op->type = IS_LONG;
op->value.lval = 0;
break;
}
}
#define zendi_convert_scalar_to_number(op, holder, result) \
if (op==result) { \
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))) { \
case IS_DOUBLE: \
case IS_LONG: \
break; \
case FLAG_IS_BC: \
(holder).type = IS_DOUBLE; /* may have lost significant digits */ \
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; \
} \
}
#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).value.lval = (zend_hash_num_elements(Z_OBJPROP_P(op))?1:0); \
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).value.lval = (zend_hash_num_elements(Z_OBJPROP_P(op))?1:0); \
break; \
default: \
(holder).value.lval = 0; \
break; \
} \
(holder).type = IS_BOOL; \
(op) = &(holder); \
}
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:
tmp = (zend_hash_num_elements(Z_OBJPROP_P(op))?1:0);
zval_dtor(op);
op->value.lval = tmp;
break;
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 = 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:
tmp = (zend_hash_num_elements(Z_OBJPROP_P(op))?1:0);
zval_dtor(op);
op->value.dval = tmp;
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)
{
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:
tmp = (zend_hash_num_elements(Z_OBJPROP_P(op))?1:0);
zval_dtor(op);
op->value.lval = tmp;
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;
TSRMLS_FETCH();
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;
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: {
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:
zval_dtor(op);
op->value.str.val = estrndup_rel("Array",sizeof("Array")-1);
op->value.str.len = sizeof("Array")-1;
zend_error(E_NOTICE, "Array to string conversion");
break;
case IS_OBJECT:
zval_dtor(op);
op->value.str.val = estrndup_rel("Object",sizeof("Object")-1);
op->value.str.len = sizeof("Object")-1;
zend_error(E_NOTICE, "Object to string conversion");
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;
/* OBJECTS_FIXME */
case IS_OBJECT:
ALLOC_HASHTABLE(Z_OBJPROP_P(op));
zend_hash_init(Z_OBJPROP_P(op), 0, NULL, ZVAL_PTR_DTOR, 0);
zend_hash_update(Z_OBJPROP_P(op), "scalar", sizeof("scalar"), (void *) &entry, sizeof(zval *), NULL);
Z_OBJCE_P(op) = &zend_standard_class_def;
Z_TYPE_P(op) = IS_OBJECT;
break;
}
}
ZEND_API void convert_to_array(zval *op)
{
switch(op->type) {
case IS_ARRAY:
return;
break;
/* OBJECTS_FIXME */
case IS_OBJECT:
op->type = IS_ARRAY;
op->value.ht = Z_OBJPROP_P(op);
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) {
/* OBJECTS_FIXME */
case IS_ARRAY:
Z_TYPE_P(op) = IS_OBJECT;
Z_OBJPROP_P(op) = op->value.ht;
Z_OBJCE_P(op) = &zend_standard_class_def;
return;
break;
case IS_OBJECT:
return;
/* OBJECTS_FIXME */
case IS_NULL:
ALLOC_HASHTABLE(Z_OBJPROP_P(op));
zend_hash_init(Z_OBJPROP_P(op), 0, NULL, ZVAL_PTR_DTOR, 0);
Z_OBJCE_P(op) = &zend_standard_class_def;
Z_TYPE_P(op) = IS_OBJECT;
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) {
double dval = (double) op1->value.lval + (double) op2->value.lval;
if ((dval > (double) LONG_MAX) || (dval < (double) LONG_MIN)) {
result->value.dval = dval;
result->type = IS_DOUBLE;
} else {
result->value.lval = op1->value.lval + op2->value.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) {
double dval = (double) op1->value.lval - (double) op2->value.lval;
if ((dval < (double) LONG_MIN) || (dval > (double) LONG_MAX)) {
result->value.dval = dval;
result->type = IS_DOUBLE;
} else {
result->value.lval = op1->value.lval - op2->value.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) {
double dval = (double) op1->value.lval * (double) op2->value.lval;
if ((dval > (double) LONG_MAX) || (dval < (double) LONG_MIN)) {
result->value.dval = dval;
result->type = IS_DOUBLE;
} else {
result->value.lval = op1->value.lval * op2->value.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 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 */
}
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) {
efree(result->value.str.val);
}
result->value.str.val = result_str;
result->value.str.len = result_len;
return SUCCESS;
}
zendi_convert_to_long(op1, op1_copy, result);
zendi_convert_to_long(op2, op2_copy, result);
result->type = IS_LONG;
result->value.lval = op1->value.lval | op2->value.lval;
return SUCCESS;
}
ZEND_API int bitwise_and_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 = shorter->value.str.len;
result_str = estrndup(shorter->value.str.val, shorter->value.str.len);
for (i = 0; i < shorter->value.str.len; i++) {
result_str[i] &= longer->value.str.val[i];
}
if (result==op1) {
efree(result->value.str.val);
}
result->value.str.val = result_str;
result->value.str.len = result_len;
return SUCCESS;
}
zendi_convert_to_long(op1, op1_copy, result);
zendi_convert_to_long(op2, op2_copy, result);
result->type = IS_LONG;
result->value.lval = op1->value.lval & op2->value.lval;
return SUCCESS;
}
ZEND_API int bitwise_xor_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 = shorter->value.str.len;
result_str = estrndup(shorter->value.str.val, shorter->value.str.len);
for (i = 0; i < shorter->value.str.len; i++) {
result_str[i] ^= longer->value.str.val[i];
}
if (result==op1) {
efree(result->value.str.val);
}
result->value.str.val = result_str;
result->value.str.len = result_len;
return SUCCESS;
}
zendi_convert_to_long(op1, op1_copy, result);
zendi_convert_to_long(op2, op2_copy, result);
result->type = IS_LONG;
result->value.lval = op1->value.lval ^ op2->value.lval;
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);
result->value.lval = op1->value.lval << op2->value.lval;
result->type = IS_LONG;
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);
result->value.lval = op1->value.lval >> op2->value.lval;
result->type = IS_LONG;
return SUCCESS;
}
/* must support result==op1 */
ZEND_API int add_char_to_string(zval *result, zval *op1, zval *op2)
{
result->value.str.len = op1->value.str.len + 1;
result->value.str.val = (char *) erealloc(op1->value.str.val, result->value.str.len+1);
result->value.str.val[result->value.str.len - 1] = (char) op2->value.lval;
result->value.str.val[result->value.str.len] = 0;
result->type = IS_STRING;
return SUCCESS;
}
/* must support result==op1 */
ZEND_API int add_string_to_string(zval *result, zval *op1, zval *op2)
{
int length = op1->value.str.len + op2->value.str.len;
result->value.str.val = (char *) erealloc(op1->value.str.val, length+1);
memcpy(result->value.str.val+op1->value.str.len, op2->value.str.val, op2->value.str.len);
result->value.str.val[length] = 0;
result->value.str.len = length;
result->type = 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, use_copy2;
zend_make_printable_zval(op1, &op1_copy, &use_copy1);
zend_make_printable_zval(op2, &op2_copy, &use_copy2);
if (use_copy1) {
op1 = &op1_copy;
}
if (use_copy2) {
op2 = &op2_copy;
}
if (result==op1) { /* special case, perform operations on result */
uint res_len = op1->value.str.len + op2->value.str.len;
if (result->value.str.len == 0) { /* handle empty_string */
STR_FREE(result->value.str.val);
result->value.str.val = emalloc(res_len+1);
} else {
result->value.str.val = erealloc(result->value.str.val, res_len+1);
}
memcpy(result->value.str.val+result->value.str.len, op2->value.str.val, op2->value.str.len);
result->value.str.val[res_len]=0;
result->value.str.len = res_len;
} else {
result->value.str.len = op1->value.str.len + op2->value.str.len;
result->value.str.val = (char *) emalloc(result->value.str.len + 1);
memcpy(result->value.str.val, op1->value.str.val, op1->value.str.len);
memcpy(result->value.str.val+op1->value.str.len, op2->value.str.val,op2->value.str.len);
result->value.str.val[result->value.str.len] = 0;
result->type = 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, use_copy2;
zend_make_printable_zval(op1, &op1_copy, &use_copy1);
zend_make_printable_zval(op2, &op2_copy, &use_copy2);
if (use_copy1) {
op1 = &op1_copy;
}
if (use_copy2) {
op2 = &op2_copy;
}
result->value.lval = zend_binary_zval_strcmp(op1, op2);
result->type = IS_LONG;
if (use_copy1) {
zval_dtor(op1);
}
if (use_copy2) {
zval_dtor(op2);
}
return SUCCESS;
}
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);
result->value.lval = ZEND_NORMALIZE_BOOL(op1_copy.value.dval-op2_copy.value.dval);
result->type = IS_LONG;
return SUCCESS;
}
ZEND_API int compare_function(zval *result, zval *op1, zval *op2 TSRMLS_DC)
{
zval op1_copy, op2_copy;
if ((op1->type == IS_NULL && op2->type == IS_STRING)
|| (op2->type == IS_NULL && op1->type == IS_STRING)) {
if (op1->type == IS_NULL) {
result->type = IS_LONG;
result->value.lval = zend_binary_strcmp("", 0, op2->value.str.val, op2->value.str.len);
return SUCCESS;
} else {
result->type = IS_LONG;
result->value.lval = zend_binary_strcmp(op1->value.str.val, op1->value.str.len, "", 0);
return SUCCESS;
}
}
if (op1->type == IS_STRING && op2->type == IS_STRING) {
zendi_smart_strcmp(result, op1, op2);
return SUCCESS;
}
if (op1->type == IS_BOOL || op2->type == IS_BOOL
|| op1->type == IS_NULL || op2->type == IS_NULL) {
zendi_convert_to_boolean(op1, op1_copy, result);
zendi_convert_to_boolean(op2, op2_copy, result);
result->type = IS_LONG;
result->value.lval = ZEND_NORMALIZE_BOOL(op1->value.lval-op2->value.lval);
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) {
result->type = IS_LONG;
result->value.lval = op1->value.lval>op2->value.lval?1:(op1->value.lval<op2->value.lval?-1:0);
return SUCCESS;
}
if ((op1->type == IS_DOUBLE || op1->type == IS_LONG)
&& (op2->type == IS_DOUBLE || op2->type == IS_LONG)) {
result->value.dval = (op1->type == IS_LONG ? (double) op1->value.lval : op1->value.dval) - (op2->type == IS_LONG ? (double) op2->value.lval : op2->value.dval);
result->value.lval = ZEND_NORMALIZE_BOOL(result->value.dval);
result->type = IS_LONG;
return SUCCESS;
}
if (op1->type==IS_ARRAY && op2->type==IS_ARRAY) {
zend_compare_arrays(result, op1, op2 TSRMLS_CC);
return SUCCESS;
}
if (op1->type==IS_OBJECT && op2->type==IS_OBJECT) {
zend_compare_objects(result, op1, op2 TSRMLS_CC);
return SUCCESS;
}
if (op1->type==IS_ARRAY) {
result->value.lval = 1;
result->type = IS_LONG;
return SUCCESS;
}
if (op2->type==IS_ARRAY) {
result->value.lval = -1;
result->type = IS_LONG;
return SUCCESS;
}
if (op1->type==IS_OBJECT) {
result->value.lval = 1;
result->type = IS_LONG;
return SUCCESS;
}
if (op2->type==IS_OBJECT) {
result->value.lval = -1;
result->type = IS_LONG;
return SUCCESS;
}
ZVAL_BOOL(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 !result.value.lval;
}
ZEND_API int is_identical_function(zval *result, zval *op1, zval *op2 TSRMLS_DC)
{
result->type = IS_BOOL;
if (op1->type != op2->type) {
result->value.lval = 0;
return SUCCESS;
}
switch (op1->type) {
case IS_NULL:
result->value.lval = (op2->type==IS_NULL);
break;
case IS_BOOL:
case IS_LONG:
case IS_RESOURCE:
result->value.lval = (op1->value.lval == op2->value.lval);
break;
case IS_DOUBLE:
result->value.lval = (op1->value.dval == op2->value.dval);
break;
case IS_STRING:
if ((op1->value.str.len == op2->value.str.len)
&& (!memcmp(op1->value.str.val, op2->value.str.val, op1->value.str.len))) {
result->value.lval = 1;
} else {
result->value.lval = 0;
}
break;
case IS_ARRAY:
if (zend_hash_compare(op1->value.ht, op2->value.ht, (compare_func_t) hash_zval_identical_function, 1 TSRMLS_CC)==0) {
result->value.lval = 1;
} else {
result->value.lval = 0;
}
break;
case IS_OBJECT:
/* OBJECTS_FIXME */
if (Z_OBJCE_P(op1) != Z_OBJCE_P(op2)) {
result->value.lval = 0;
} else {
if (zend_hash_compare(Z_OBJPROP_P(op1), Z_OBJPROP_P(op2), (compare_func_t) hash_zval_identical_function, 1 TSRMLS_CC)==0) {
result->value.lval = 1;
} else {
result->value.lval = 0;
}
}
break;
default:
ZVAL_BOOL(result, 0);
return FAILURE;
}
return SUCCESS;
}
ZEND_API int is_not_identical_function(zval *result, zval *op1, zval *op2 TSRMLS_DC)
{
result->type = IS_BOOL;
if (is_identical_function(result, op1, op2 TSRMLS_CC) == FAILURE) {
return FAILURE;
}
result->value.lval = !result->value.lval;
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;
}
convert_to_boolean(result);
if (result->value.lval == 0) {
result->value.lval = 1;
} else {
result->value.lval = 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;
}
convert_to_boolean(result);
if (result->value.lval) {
result->value.lval = 1;
} else {
result->value.lval = 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;
}
if (result->type == IS_LONG) {
result->type = IS_BOOL;
if (result->value.lval < 0) {
result->value.lval = 1;
} else {
result->value.lval = 0;
}
return SUCCESS;
}
if (result->type == IS_DOUBLE) {
result->type = IS_BOOL;
if (result->value.dval < 0) {
result->value.lval = 1;
} else {
result->value.lval = 0;
}
return SUCCESS;
}
zend_error(E_ERROR, "Unsupported operand types");
return FAILURE;
}
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;
}
if (result->type == IS_LONG) {
result->type = IS_BOOL;
if (result->value.lval <= 0) {
result->value.lval = 1;
} else {
result->value.lval = 0;
}
return SUCCESS;
}
if (result->type == IS_DOUBLE) {
result->type = IS_BOOL;
if (result->value.dval <= 0) {
result->value.lval = 1;
} else {
result->value.lval = 0;
}
return SUCCESS;
}
zend_error(E_ERROR, "Unsupported operand types");
return FAILURE;
}
#define LOWER_CASE 1
#define UPPER_CASE 2
#define NUMERIC 3
static void increment_string(zval *str)
{
int carry=0;
int pos=str->value.str.len-1;
char *s=str->value.str.val;
char *t;
int last=0; /* Shut up the compiler warning */
int ch;
if (str->value.str.len == 0) {
STR_FREE(str->value.str.val);
str->value.str.val = estrndup("1", sizeof("1")-1);
str->value.str.len = 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(str->value.str.len+1+1);
memcpy(t+1,str->value.str.val, str->value.str.len);
str->value.str.len++;
t[str->value.str.len] = '\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(str->value.str.val);
str->value.str.val = t;
}
}
ZEND_API int increment_function(zval *op1)
{
switch (op1->type) {
case IS_LONG:
op1->value.lval++;
break;
case IS_DOUBLE:
op1->value.dval = op1->value.dval + 1;
break;
case IS_NULL:
op1->value.lval = 1;
op1->type = IS_LONG;
break;
case IS_STRING: {
long lval;
double dval;
char *strval = op1->value.str.val;
switch (is_numeric_string(strval, op1->value.str.len, &lval, &dval)) {
case IS_LONG:
op1->value.lval = lval+1;
op1->type = IS_LONG;
efree(strval);
break;
case IS_DOUBLE:
op1->value.dval = dval+1;
op1->type = IS_DOUBLE;
efree(strval);
break;
#if 0
case FLAG_IS_BC:
/* Not implemented */
#endif
default:
/* Perl style string increment */
increment_string(op1);
break;
}
}
break;
default:
return FAILURE;
}
return SUCCESS;
}
ZEND_API int decrement_function(zval *op1)
{
long lval;
switch (op1->type) {
case IS_LONG:
op1->value.lval--;
break;
case IS_DOUBLE:
op1->value.dval = op1->value.dval - 1;
break;
case IS_STRING: /* Like perl we only support string increment */
if (op1->value.str.len==0) { /* consider as 0 */
STR_FREE(op1->value.str.val);
op1->value.lval = -1;
op1->type = IS_LONG;
break;
} else if (is_numeric_string(op1->value.str.val, op1->value.str.len, &lval, NULL)==IS_LONG) { /* long */
STR_FREE(op1->value.str.val);
op1->value.lval = lval-1;
op1->type = IS_LONG;
break;
}
break;
default:
return FAILURE;
}
return SUCCESS;
}
ZEND_API int zval_is_true(zval *op)
{
convert_to_boolean(op);
return (op->value.lval ? 1 : 0);
}
ZEND_API void zend_str_tolower(char *str, unsigned int length)
{
register char *p=str, *end=p+length;
while (p<end) {
*p = tolower(*p);
p++;
}
}
ZEND_API int zend_binary_strcmp(char *s1, uint len1, 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(char *s1, uint len1, 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(char *s1, uint len1, char *s2, uint len2)
{
int len;
int c1,c2;
len = MIN(len1, len2);
while (len--) {
c1 = tolower(*s1++);
c2 = tolower(*s2++);
if (c1 != c2) {
return c1 - c2;
}
}
return len1 - len2;
}
ZEND_API int zend_binary_strncasecmp(char *s1, uint len1, char *s2, uint len2, uint length)
{
int len;
int c1,c2;
len = MIN(length, MIN(len1, len2));
while (len--) {
c1 = tolower(*s1++);
c2 = tolower(*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(s1->value.str.val, s1->value.str.len, s2->value.str.val, s2->value.str.len);
}
ZEND_API int zend_binary_zval_strncmp(zval *s1, zval *s2, zval *s3)
{
return zend_binary_strncmp(s1->value.str.val, s1->value.str.len, s2->value.str.val, s2->value.str.len, s3->value.lval);
}
ZEND_API int zend_binary_zval_strcasecmp(zval *s1, zval *s2)
{
return zend_binary_strcasecmp(s1->value.str.val, s1->value.str.len, s2->value.str.val, s2->value.str.len);
}
ZEND_API int zend_binary_zval_strncasecmp(zval *s1, zval *s2, zval *s3)
{
return zend_binary_strncasecmp(s1->value.str.val, s1->value.str.len, s2->value.str.val, s2->value.str.len, s3->value.lval);
}
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(s1->value.str.val, s1->value.str.len, &lval1, &dval1)) &&
(ret2=is_numeric_string(s2->value.str.val, s2->value.str.len, &lval2, &dval2))) {
#if 0&&WITH_BCMATH
if ((ret1==FLAG_IS_BC) || (ret2==FLAG_IS_BC)) {
bc_num first, second;
/* use the BC math library to compare the numbers */
init_num(&first);
init_num(&second);
str2num(&first,s1->value.str.val,100); /* this scale should do */
str2num(&second,s2->value.str.val,100); /* ditto */
result->value.lval = bc_compare(first,second);
result->value.lval = ZEND_NORMALIZE_BOOL(result->value.lval);
result->type = IS_LONG;
free_num(&first);
free_num(&second);
} else
#endif
if ((ret1==IS_DOUBLE) || (ret2==IS_DOUBLE)) {
if (ret1!=IS_DOUBLE) {
dval1 = strtod(s1->value.str.val, NULL);
} else if (ret2!=IS_DOUBLE) {
dval2 = strtod(s2->value.str.val, NULL);
}
result->value.dval = dval1 - dval2;
result->value.lval = ZEND_NORMALIZE_BOOL(result->value.dval);
result->type = IS_LONG;
} else { /* they both have to be long's */
result->value.lval = lval1 - lval2;
result->value.lval = ZEND_NORMALIZE_BOOL(result->value.lval);
result->type = IS_LONG;
}
} else {
result->value.lval = zend_binary_zval_strcmp(s1, s2);
result->value.lval = ZEND_NORMALIZE_BOOL(result->value.lval);
result->type = IS_LONG;
}
return;
}
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 result.value.lval;
}
ZEND_API void zend_compare_symbol_tables(zval *result, HashTable *ht1, HashTable *ht2 TSRMLS_DC)
{
result->type = IS_LONG;
result->value.lval = 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, a1->value.ht, a2->value.ht TSRMLS_CC);
}
ZEND_API void zend_compare_objects(zval *result, zval *o1, zval *o2 TSRMLS_DC)
{
/* OBJECTS_FIXME */
if (Z_OBJCE_P(o1) != Z_OBJCE_P(o2)) {
result->value.lval = 1; /* Comparing objects of different types is pretty much meaningless */
result->type = IS_LONG;
return;
}
zend_compare_symbol_tables(result, Z_OBJPROP_P(o1), Z_OBJPROP_P(o2) TSRMLS_CC);
}
/* returns 0 for non-numeric string
* returns IS_DOUBLE for floating point string, and assigns the value to *dval (if it's not NULL)
* returns IS_LONG for integer strings, and assigns the value to *lval (if it's not NULL)
* returns FLAG_IS_BC if the number might lose accuracy when converted to a double
*/
#if 0
static inline int is_numeric_string(char *str, int length, long *lval, double *dval)
{
register char *p=str, *end=str+length;
unsigned char had_period=0,had_exponent=0;
char *end_ptr;
if (!length) {
return 0;
}
switch (*p) {
case '-':
case '+':
while (*++p==' '); /* ignore spaces after the sign */
break;
default:
break;
}
while (p<end) {
if (isdigit((int)(unsigned char)*p)) {
p++;
} else if (*p=='.') {
if (had_period) {
return 0;
} else {
had_period=1;
p++;
}
} else if (*p=='e' || *p=='E') {
p++;
if (is_numeric_string(p, length - (int) (p-str), NULL, NULL)==IS_LONG) { /* valid exponent */
had_exponent=1;
break;
} else {
return 0;
}
} else {
return 0;
}
}
errno=0;
if (had_period || had_exponent) { /* floating point number */
double local_dval;
local_dval = strtod(str, &end_ptr);
if (errno==ERANGE || end_ptr != str+length) { /* overflow or bad string */
return 0;
} else {
if (dval) {
*dval = local_dval;
}
return IS_DOUBLE;
}
} else {
long local_lval;
local_lval = strtol(str, &end_ptr, 10);
if (errno==ERANGE || end_ptr != str+length) { /* overflow or bad string */
return 0;
} else {
if (lval) {
*lval = local_lval;
}
return IS_LONG;
}
}
}
#endif
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