| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <axiom_children_iterator.h> |
| |
| struct axiom_children_iterator |
| { |
| axiom_node_t *first_child; |
| axiom_node_t *current_child; |
| axiom_node_t *last_child; |
| axis2_bool_t next_called; |
| axis2_bool_t remove_called; |
| }; |
| |
| AXIS2_EXTERN axiom_children_iterator_t * AXIS2_CALL |
| axiom_children_iterator_create(const axutil_env_t *env, |
| axiom_node_t *current_child) |
| { |
| axiom_children_iterator_t *iterator = NULL; |
| AXIS2_ENV_CHECK(env, NULL); |
| |
| iterator = (axiom_children_iterator_t *)AXIS2_MALLOC( |
| env->allocator, sizeof(axiom_children_iterator_t)); |
| |
| if (!iterator) |
| { |
| AXIS2_ERROR_SET(env->error, AXIS2_ERROR_NO_MEMORY, AXIS2_FAILURE); |
| return NULL; |
| } |
| |
| iterator->current_child = NULL; |
| iterator->last_child = NULL; |
| iterator->first_child = NULL; |
| |
| iterator->next_called = AXIS2_FALSE; |
| iterator->remove_called = AXIS2_FALSE; |
| |
| iterator->first_child = current_child; |
| iterator->current_child = current_child; |
| |
| return iterator; |
| } |
| |
| |
| AXIS2_EXTERN void AXIS2_CALL |
| axiom_children_iterator_free(axiom_children_iterator_t *iterator, |
| const axutil_env_t *env) |
| { |
| AXIS2_ENV_CHECK(env, void); |
| |
| AXIS2_FREE(env->allocator, iterator); |
| return; |
| } |
| |
| AXIS2_EXTERN axis2_status_t AXIS2_CALL |
| axiom_children_iterator_remove(axiom_children_iterator_t *iterator, |
| const axutil_env_t *env) |
| { |
| axiom_node_t *om_node = NULL; |
| AXIS2_ENV_CHECK(env, AXIS2_FAILURE); |
| |
| if (!(iterator->next_called)) |
| { |
| AXIS2_ERROR_SET(env->error, |
| AXIS2_ERROR_ITERATOR_NEXT_METHOD_HAS_NOT_YET_BEEN_CALLED, |
| AXIS2_FAILURE); |
| return AXIS2_FAILURE; |
| } |
| if (iterator->remove_called) |
| { |
| AXIS2_ERROR_SET(env->error, |
| AXIS2_ERROR_ITERATOR_REMOVE_HAS_ALREADY_BEING_CALLED, |
| AXIS2_FAILURE); |
| return AXIS2_FAILURE; |
| } |
| iterator->remove_called = AXIS2_TRUE; |
| |
| if (!(iterator->last_child)) |
| { |
| return AXIS2_FAILURE; |
| } |
| om_node = axiom_node_detach(iterator->last_child, env); |
| if (om_node) |
| { |
| axiom_node_free_tree(om_node, env); |
| } |
| return AXIS2_SUCCESS; |
| } |
| |
| AXIS2_EXTERN axis2_bool_t AXIS2_CALL |
| axiom_children_iterator_has_next(axiom_children_iterator_t *iterator, |
| const axutil_env_t *env) |
| { |
| AXIS2_ENV_CHECK(env, AXIS2_FAILURE); |
| |
| return (iterator->current_child) ? AXIS2_TRUE : AXIS2_FALSE; |
| } |
| |
| AXIS2_EXTERN axiom_node_t *AXIS2_CALL |
| axiom_children_iterator_next(axiom_children_iterator_t *iterator, |
| const axutil_env_t *env) |
| { |
| AXIS2_ENV_CHECK(env, NULL); |
| |
| iterator->next_called = AXIS2_TRUE; |
| iterator->remove_called = AXIS2_FALSE; |
| if (iterator->current_child) |
| { |
| iterator->last_child = iterator->current_child; |
| iterator->current_child = axiom_node_get_next_sibling( |
| iterator->current_child, env); |
| return iterator->last_child; |
| } |
| return NULL; |
| } |
| |
| AXIS2_EXTERN axis2_status_t AXIS2_CALL |
| axiom_children_iterator_reset(axiom_children_iterator_t *iterator, |
| const axutil_env_t *env) |
| { |
| AXIS2_ENV_CHECK(env, AXIS2_FAILURE); |
| |
| iterator->current_child = iterator->first_child; |
| return AXIS2_SUCCESS; |
| } |
| |
| |