framework/delibs/decpp/dePoolString.hpp

#ifndef _DEPOOLSTRING_HPP
#define _DEPOOLSTRING_HPP
/*-------------------------------------------------------------------------
 * drawElements C++ Base Library
 * -----------------------------
 *
 * Copyright 2014 The Android Open Source Project
 *
 * 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.
 *
 *//*!
 * \file
 * \brief Memory pool -backed string.
 *//*--------------------------------------------------------------------*/

#include "deDefs.hpp"
#include "deMemPool.hpp"
#include "dePoolArray.hpp"

#include <ostream>
#include <string>

namespace de
{

/*--------------------------------------------------------------------*//*!
 * \brief String template backed by memory pool
 *
 * \note Memory in PoolString is not contiguous so pointer arithmetic
 *       to access next element(s) doesn't work.
 *//*--------------------------------------------------------------------*/
class PoolString : public PoolArray<char>
{
public:
	explicit		PoolString			(MemPool* pool);
					PoolString			(MemPool* pool, const PoolString& other);
					~PoolString			(void);

	void			toString			(std::string& str) const;
	std::string		toString			(void) const;

	void			append				(const char* str);
	void			append				(const std::string& str);
	void			append				(const PoolString& str);

	PoolString&		operator=			(const char* str)			{ clear();	append(str);	return *this;	}
	PoolString&		operator=			(const std::string& str)	{ clear();	append(str);	return *this;	}
	PoolString&		operator=			(const PoolString& str);

	PoolString&		operator+=			(const char* str)			{ append(str);	return *this;	}
	PoolString&		operator+=			(const std::string& str)	{ append(str);	return *this;	}
	PoolString&		operator+=			(const PoolString& str)		{ append(str);	return *this;	}

private:
					PoolString			(const PoolString& other);
};

// Operators.
std::ostream&	operator<<	(std::ostream& stream, const PoolString& string);

// PoolString inline implementations.

inline PoolString::PoolString (MemPool* pool)
	: PoolArray<char>(pool)
{
}

inline PoolString::~PoolString (void)
{
}

inline std::string PoolString::toString (void) const
{
	std::string str;
	toString(str);
	return str;
}

inline PoolString& PoolString::operator= (const PoolString& str)
{
	if (this == &str)
		return *this;

	clear();
	append(str);
	return *this;
}

} // de

#endif // _DEPOOLSTRING_HPP