__ __ __ __ _____ _ _ _____ _ _ _
| \/ | \ \ / / | __ \ (_) | | / ____| | | | |
| \ / |_ __\ V / | |__) | __ ___ ____ _| |_ ___ | (___ | |__ ___| | |
| |\/| | '__|> < | ___/ '__| \ \ / / _` | __/ _ \ \___ \| '_ \ / _ \ | |
| | | | |_ / . \ | | | | | |\ V / (_| | || __/ ____) | | | | __/ | |
|_| |_|_(_)_/ \_\ |_| |_| |_| \_/ \__,_|\__\___| |_____/|_| |_|\___V 2.1
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/*
* The contents of this file are subject to the Initial
* Developer's Public License Version 1.0 (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.ibphoenix.com/main.nfs?a=ibphoenix&page=ibp_idpl.
*
* Software distributed under the License is distributed AS IS,
* WITHOUT WARRANTY OF ANY KIND, either express or implied.
* See the License for the specific language governing rights
* and limitations under the License.
*
* The Original Code was created by Adriano dos Santos Fernandes
* for the Firebird Open Source RDBMS project.
*
* Copyright (c) 2015 Adriano dos Santos Fernandes <adrianosf@gmail.com>
* and all contributors signed below.
*
* All Rights Reserved.
* Contributor(s): ______________________________________.
*/
#ifndef UDR_CPP_EXAMPLE_H
#define UDR_CPP_EXAMPLE_H
#define FB_UDR_STATUS_TYPE ::Firebird::ThrowStatusWrapper
#include "ibase.h"
#include "firebird/UdrCppEngine.h"
#include <assert.h>
#include <stdio.h>
namespace
{
template <typename T>
class AutoReleaseClear
{
public:
static void clear(T* ptr)
{
if (ptr)
ptr->release();
}
};
template <typename T>
class AutoDisposeClear
{
public:
static void clear(T* ptr)
{
if (ptr)
ptr->dispose();
}
};
template <typename T>
class AutoDeleteClear
{
public:
static void clear(T* ptr)
{
delete ptr;
}
};
template <typename T>
class AutoArrayDeleteClear
{
public:
static void clear(T* ptr)
{
delete [] ptr;
}
};
template <typename T, typename Clear>
class AutoImpl
{
public:
AutoImpl<T, Clear>(T* aPtr = NULL)
: ptr(aPtr)
{
}
~AutoImpl()
{
Clear::clear(ptr);
}
AutoImpl<T, Clear>& operator =(T* aPtr)
{
Clear::clear(ptr);
ptr = aPtr;
return *this;
}
operator T*()
{
return ptr;
}
operator const T*() const
{
return ptr;
}
bool operator !() const
{
return !ptr;
}
bool hasData() const
{
return ptr != NULL;
}
T* operator ->()
{
return ptr;
}
T* release()
{
T* tmp = ptr;
ptr = NULL;
return tmp;
}
void reset(T* aPtr = NULL)
{
if (aPtr != ptr)
{
Clear::clear(ptr);
ptr = aPtr;
}
}
private:
// not implemented
AutoImpl<T, Clear>(AutoImpl<T, Clear>&);
void operator =(AutoImpl<T, Clear>&);
private:
T* ptr;
};
template <typename T> class AutoDispose : public AutoImpl<T, AutoDisposeClear<T> >
{
public:
AutoDispose(T* ptr = NULL)
: AutoImpl<T, AutoDisposeClear<T> >(ptr)
{
}
};
template <typename T> class AutoRelease : public AutoImpl<T, AutoReleaseClear<T> >
{
public:
AutoRelease(T* ptr = NULL)
: AutoImpl<T, AutoReleaseClear<T> >(ptr)
{
}
};
template <typename T> class AutoDelete : public AutoImpl<T, AutoDeleteClear<T> >
{
public:
AutoDelete(T* ptr = NULL)
: AutoImpl<T, AutoDeleteClear<T> >(ptr)
{
}
};
template <typename T> class AutoArrayDelete : public AutoImpl<T, AutoArrayDeleteClear<T> >
{
public:
AutoArrayDelete(T* ptr = NULL)
: AutoImpl<T, AutoArrayDeleteClear<T> >(ptr)
{
}
};
}
#endif // UDR_CPP_EXAMPLE_H