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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2012 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/

/* $Id$ */

#include "zend.h"
#include "zend_globals.h"
#include "zend_variables.h"
#include "zend_API.h"
#include "zend_interfaces.h"
#include "zend_exceptions.h"

ZEND_API void zend_object_std_init(zend_object *object, zend_class_entry *ce TSRMLS_DC)
{
object->ce = ce;
object->properties = NULL;
object->properties_table = NULL;
object->guards = NULL;
}

ZEND_API void zend_object_std_dtor(zend_object *object TSRMLS_DC)
{
if (object->guards) {
zend_hash_destroy(object->guards);
FREE_HASHTABLE(object->guards);
}
if (object->properties) {
zend_hash_destroy(object->properties);
FREE_HASHTABLE(object->properties);
if (object->properties_table) {
efree(object->properties_table);
}
} else if (object->properties_table) {
int i;

for (i = 0; i < object->ce->default_properties_count; i++) {
if (object->properties_table[i]) {
zval_ptr_dtor(&object->properties_table[i]);
}
}
efree(object->properties_table);
}
}

ZEND_API void zend_objects_destroy_object(zend_object *object, zend_object_handle handle TSRMLS_DC)
{
zend_function *destructor = object ? object->ce->destructor : NULL;

if (destructor) {
zval *old_exception;
zval *obj;
zend_object_store_bucket *obj_bucket;

if (destructor->op_array.fn_flags & (ZEND_ACC_PRIVATE|ZEND_ACC_PROTECTED)) {
if (destructor->op_array.fn_flags & ZEND_ACC_PRIVATE) {
/* Ensure that if we're calling a private function, we're allowed to do so.
*/
if (object->ce != EG(scope)) {
zend_class_entry *ce = object->ce;

zend_error(EG(in_execution) ? E_ERROR : E_WARNING,
"Call to private %s::__destruct() from context '%s'%s",
ce->name,
EG(scope) ? EG(scope)->name : "",
EG(in_execution) ? "" : " during shutdown ignored");
return;
}
} else {
/* Ensure that if we're calling a protected function, we're allowed to do so.
*/
if (!zend_check_protected(zend_get_function_root_class(destructor), EG(scope))) {
zend_class_entry *ce = object->ce;

zend_error(EG(in_execution) ? E_ERROR : E_WARNING,
"Call to protected %s::__destruct() from context '%s'%s",
ce->name,
EG(scope) ? EG(scope)->name : "",
EG(in_execution) ? "" : " during shutdown ignored");
return;
}
}
}

MAKE_STD_ZVAL(obj);
Z_TYPE_P(obj) = IS_OBJECT;
Z_OBJ_HANDLE_P(obj) = handle;
obj_bucket = &EG(objects_store).object_buckets[handle];
if (!obj_bucket->bucket.obj.handlers) {
obj_bucket->bucket.obj.handlers = &std_object_handlers;
}
Z_OBJ_HT_P(obj) = obj_bucket->bucket.obj.handlers;
zval_copy_ctor(obj);

/* Make sure that destructors are protected from previously thrown exceptions.
* For example, if an exception was thrown in a function and when the function's
* local variable destruction results in a destructor being called.
*/
old_exception = NULL;
if (EG(exception)) {
if (Z_OBJ_HANDLE_P(EG(exception)) == handle) {
zend_error(E_ERROR, "Attempt to destruct pending exception");
} else {
old_exception = EG(exception);
EG(exception) = NULL;
}
}
zend_call_method_with_0_params(&obj, object->ce, &destructor, ZEND_DESTRUCTOR_FUNC_NAME, NULL);
if (old_exception) {
if (EG(exception)) {
zend_exception_set_previous(EG(exception), old_exception TSRMLS_CC);
} else {
EG(exception) = old_exception;
}
}
zval_ptr_dtor(&obj);
}
}

ZEND_API void zend_objects_free_object_storage(zend_object *object TSRMLS_DC)
{
zend_object_std_dtor(object TSRMLS_CC);
efree(object);
}

ZEND_API zend_object_value zend_objects_new(zend_object **object, zend_class_entry *class_type TSRMLS_DC)
{
zend_object_value retval;

*object = emalloc(sizeof(zend_object));
(*object)->ce = class_type;
(*object)->properties = NULL;
(*object)->properties_table = NULL;
(*object)->guards = NULL;
retval.handle = zend_objects_store_put(*object, (zend_objects_store_dtor_t) zend_objects_destroy_object, (zend_objects_free_object_storage_t) zend_objects_free_object_storage, NULL TSRMLS_CC);
retval.handlers = &std_object_handlers;
return retval;
}

ZEND_API zend_object *zend_objects_get_address(const zval *zobject TSRMLS_DC)
{
return (zend_object *)zend_object_store_get_object(zobject TSRMLS_CC);
}

ZEND_API void zend_objects_clone_members(zend_object *new_object, zend_object_value new_obj_val, zend_object *old_object, zend_object_handle handle TSRMLS_DC)
{
int i;

if (old_object->properties_table) {
if (!new_object->properties_table) {
new_object->properties_table = emalloc(sizeof(zval*) * old_object->ce->default_properties_count);
memset(new_object->properties_table, 0, sizeof(zval*) * old_object->ce->default_properties_count);
}
for (i = 0; i < old_object->ce->default_properties_count; i++) {
if (!new_object->properties) {
if (new_object->properties_table[i]) {
zval_ptr_dtor(&new_object->properties_table[i]);
}
}
if (!old_object->properties) {
new_object->properties_table[i] = old_object->properties_table[i];
if (new_object->properties_table[i]) {
Z_ADDREF_P(new_object->properties_table[i]);
}
}
}
}
if (old_object->properties) {
if (!new_object->properties) {
ALLOC_HASHTABLE(new_object->properties);
zend_hash_init(new_object->properties, 0, NULL, ZVAL_PTR_DTOR, 0);
}
zend_hash_copy(new_object->properties, old_object->properties, (copy_ctor_func_t) zval_add_ref, (void *) NULL /* Not used anymore */, sizeof(zval *));
if (old_object->properties_table) {
HashPosition pos;
zend_property_info *prop_info;
for (zend_hash_internal_pointer_reset_ex(&old_object->ce->properties_info, &pos);
zend_hash_get_current_data_ex(&old_object->ce->properties_info, (void**)&prop_info, &pos) == SUCCESS;
zend_hash_move_forward_ex(&old_object->ce->properties_info, &pos)) {
if ((prop_info->flags & ZEND_ACC_STATIC) == 0) {
if (zend_hash_quick_find(new_object->properties, prop_info->name, prop_info->name_length+1, prop_info->h, (void**)&new_object->properties_table[prop_info->offset]) == FAILURE) {
new_object->properties_table[prop_info->offset] = NULL;
}
}
}
}
}

if (old_object->ce->clone) {
zval *new_obj;

MAKE_STD_ZVAL(new_obj);
new_obj->type = IS_OBJECT;
new_obj->value.obj = new_obj_val;
zval_copy_ctor(new_obj);

zend_call_method_with_0_params(&new_obj, old_object->ce, &old_object->ce->clone, ZEND_CLONE_FUNC_NAME, NULL);

zval_ptr_dtor(&new_obj);
}
}

ZEND_API zend_object_value zend_objects_clone_obj(zval *zobject TSRMLS_DC)
{
zend_object_value new_obj_val;
zend_object *old_object;
zend_object *new_object;
zend_object_handle handle = Z_OBJ_HANDLE_P(zobject);

/* assume that create isn't overwritten, so when clone depends on the
* overwritten one then it must itself be overwritten */
old_object = zend_objects_get_address(zobject TSRMLS_CC);
new_obj_val = zend_objects_new(&new_object, old_object->ce TSRMLS_CC);

zend_objects_clone_members(new_object, new_obj_val, old_object, handle TSRMLS_CC);

return new_obj_val;
}

/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*/
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