| /* |
| * |
| * 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 <proton/object.h> |
| #include <stdlib.h> |
| #include <assert.h> |
| |
| struct pn_iterator_t { |
| pn_iterator_next_t next; |
| size_t size; |
| void *state; |
| }; |
| |
| static void pn_iterator_initialize(void *object) |
| { |
| pn_iterator_t *it = (pn_iterator_t *) object; |
| it->next = NULL; |
| it->size = 0; |
| it->state = NULL; |
| } |
| |
| static void pn_iterator_finalize(void *object) |
| { |
| pn_iterator_t *it = (pn_iterator_t *) object; |
| free(it->state); |
| } |
| |
| #define CID_pn_iterator CID_pn_object |
| #define pn_iterator_hashcode NULL |
| #define pn_iterator_compare NULL |
| #define pn_iterator_inspect NULL |
| |
| pn_iterator_t *pn_iterator() |
| { |
| static const pn_class_t clazz = PN_CLASS(pn_iterator); |
| pn_iterator_t *it = (pn_iterator_t *) pn_class_new(&clazz, sizeof(pn_iterator_t)); |
| return it; |
| } |
| |
| void *pn_iterator_start(pn_iterator_t *iterator, pn_iterator_next_t next, |
| size_t size) { |
| assert(iterator); |
| assert(next); |
| iterator->next = next; |
| if (iterator->size < size) { |
| iterator->state = realloc(iterator->state, size); |
| } |
| return iterator->state; |
| } |
| |
| void *pn_iterator_next(pn_iterator_t *iterator) { |
| assert(iterator); |
| if (iterator->next) { |
| void *result = iterator->next(iterator->state); |
| if (!result) iterator->next = NULL; |
| return result; |
| } else { |
| return NULL; |
| } |
| } |