| /* |
| * 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 "Buffer.h" |
| |
| #include <decaf/lang/exceptions/IllegalArgumentException.h> |
| |
| using namespace decaf; |
| using namespace decaf::nio; |
| using namespace decaf::lang; |
| using namespace decaf::lang::exceptions; |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| Buffer::Buffer( std::size_t capacity ) { |
| this->_capacity = capacity; |
| this->_limit = capacity; |
| this->_position = 0; |
| this->_mark = 0; |
| this->_markSet = false; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| Buffer::Buffer( const Buffer& other ) { |
| |
| this->_capacity = other._capacity; |
| this->_limit = other._limit; |
| this->_position = other._position; |
| this->_mark = other._mark; |
| this->_markSet = other._markSet; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| Buffer& Buffer::position( std::size_t newPosition ) |
| throw( lang::exceptions::IllegalArgumentException ) { |
| |
| if( newPosition > this->_limit ) { |
| throw IllegalArgumentException( |
| __FILE__, __LINE__, |
| "Buffer::position - New Position is greater than set limit" ); |
| } |
| |
| this->_position = newPosition; |
| if( this->_markSet && ( this->_mark > newPosition ) ) { |
| this->_mark = 0; |
| this->_markSet = false; |
| } |
| |
| return *this; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| Buffer& Buffer::limit( std::size_t newLimit ) throw( IllegalArgumentException ) { |
| |
| if( newLimit > this->capacity() ) { |
| throw IllegalArgumentException( |
| __FILE__, __LINE__, |
| "Buffer::limit - new limit is larger than the capacity." ); |
| } |
| |
| this->_limit = newLimit; |
| if( this->_position > newLimit ) { |
| this->_position = newLimit; |
| } |
| |
| if( this->_markSet && ( this->_mark > newLimit ) ) { |
| this->_mark = 0; |
| this->_markSet = false; |
| } |
| |
| return *this; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| Buffer& Buffer::mark() { |
| |
| this->_mark = this->_position; |
| this->_markSet = true; |
| |
| return *this; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| Buffer& Buffer::reset() throw ( InvalidMarkException ) { |
| |
| if( !this->_markSet ) { |
| throw InvalidMarkException( |
| __FILE__, __LINE__, |
| "Buffer::reset - Buffer has not been Marked." ); |
| } |
| |
| this->_position = this->_mark; |
| |
| return *this; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| Buffer& Buffer::clear() { |
| |
| this->_position = 0; |
| this->_mark = 0; |
| this->_markSet = false; |
| this->_limit = this->capacity(); |
| return *this; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| Buffer& Buffer::flip() { |
| |
| this->_limit = this->_position; |
| this->_position = 0; |
| this->_mark = 0; |
| this->_markSet = false; |
| return *this; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| Buffer& Buffer::rewind() { |
| |
| this->_position = 0; |
| this->_mark = 0; |
| this->_markSet = false; |
| return *this; |
| } |