| /* |
| * Copyright 2011 Google Inc. All Rights Reserved. |
| * |
| * Licensed 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. |
| */ |
| |
| #ifndef SFNTLY_CPP_SRC_SFNTLY_PORT_JAVA_ITERATOR_H_ |
| #define SFNTLY_CPP_SRC_SFNTLY_PORT_JAVA_ITERATOR_H_ |
| |
| #include "sfntly/port/refcount.h" |
| |
| // Interface of Java iterator. |
| // This is a forward read-only iterator that represents java.util.Iterator<E> |
| |
| namespace sfntly { |
| |
| template <typename ReturnType, typename ContainerBase> |
| class Iterator : public virtual RefCount { |
| public: |
| virtual ~Iterator() {} |
| virtual ContainerBase* container_base() = 0; |
| |
| protected: |
| Iterator() {} |
| NO_COPY_AND_ASSIGN(Iterator); |
| }; |
| |
| template <typename ReturnType, typename Container, |
| typename ContainerBase = Container> |
| class PODIterator : public Iterator<ReturnType, ContainerBase>, |
| public RefCounted< PODIterator<ReturnType, Container> > { |
| public: |
| explicit PODIterator(Container* container) : container_(container) {} |
| virtual ~PODIterator() {} |
| virtual ContainerBase* container_base() { |
| return static_cast<ContainerBase*>(container_); |
| } |
| |
| virtual bool HasNext() = 0; |
| virtual ReturnType Next() = 0; |
| virtual void Remove() { |
| #if !defined (SFNTLY_NO_EXCEPTION) |
| // Default to no support. |
| throw UnsupportedOperationException(); |
| #endif |
| } |
| |
| protected: |
| Container* container() { return container_; } |
| |
| private: |
| Container* container_; // Dumb pointer is used to avoid circular ref-counting |
| }; |
| |
| template <typename ReturnType, typename Container, |
| typename ContainerBase = Container> |
| class RefIterator : public Iterator<ReturnType, ContainerBase>, |
| public RefCounted< RefIterator<ReturnType, Container> > { |
| public: |
| explicit RefIterator(Container* container) : container_(container) {} |
| virtual ~RefIterator() {} |
| virtual ContainerBase* container_base() { |
| return static_cast<ContainerBase*>(container_); |
| } |
| |
| virtual bool HasNext() = 0; |
| CALLER_ATTACH virtual ReturnType* Next() = 0; |
| virtual void Remove() { |
| #if !defined (SFNTLY_NO_EXCEPTION) |
| // Default to no support. |
| throw UnsupportedOperationException(); |
| #endif |
| } |
| |
| protected: |
| Container* container() { return container_; } |
| |
| private: |
| Container* container_; // Dumb pointer is used to avoid circular ref-counting |
| }; |
| |
| } // namespace sfntly |
| |
| #endif // SFNTLY_CPP_SRC_SFNTLY_PORT_JAVA_ITERATOR_H_ |