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/*========================== begin_copyright_notice ============================
Copyright (C) 2019-2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#pragma once
#include "Array.h"
namespace iSTD
{
/*****************************************************************************\
Struct: IsLinearStackTypeSupported
\*****************************************************************************/
template<typename T>
struct IsLinearStackTypeSupported { enum { value = false }; };
template<>
struct IsLinearStackTypeSupported<bool> { enum { value = true }; };
template<>
struct IsLinearStackTypeSupported<char> { enum { value = true }; };
template<>
struct IsLinearStackTypeSupported<unsigned char> { enum { value = true }; };
template<>
struct IsLinearStackTypeSupported<int> { enum { value = true }; };
template<>
struct IsLinearStackTypeSupported<unsigned int> { enum { value = true }; };
#ifndef __LP64__ // u/long on linux64 platform is 64-bit type and collides with U/INT64
template<>
struct IsLinearStackTypeSupported<long> { enum { value = true }; };
template<>
struct IsLinearStackTypeSupported<unsigned long> { enum { value = true }; };
#endif
template<>
struct IsLinearStackTypeSupported<float> { enum { value = true }; };
template<>
struct IsLinearStackTypeSupported<INT64> { enum { value = true }; };
template<>
struct IsLinearStackTypeSupported<UINT64> { enum { value = true }; };
template<typename T>
struct IsLinearStackTypeSupported<T*> { enum { value = true }; };
/*****************************************************************************\
Template Parameters
\*****************************************************************************/
#define LinearStackTemplateList class Type, class CAllocatorType
#define CLinearStackType CLinearStack<Type,CAllocatorType>
/*****************************************************************************\
Class:
CLinearStack
Description:
Implements an array-based stack
\*****************************************************************************/
template<LinearStackTemplateList>
class CLinearStack : public CObject<CAllocatorType>
{
public:
CLinearStack( const DWORD size );
virtual ~CLinearStack( void );
bool IsEmpty( void ) const;
DWORD GetCount( void ) const;
bool Push( const Type element );
Type Pop( void );
Type Top( void ) const;
void Reset( void );
void DebugPrint( void ) const;
protected:
CDynamicArray<Type,CAllocatorType> m_ElementArray;
DWORD m_Count;
};
/*****************************************************************************\
Function:
CLinearStack Constructor
Description:
Initializes internal data
Input:
const DWORD size - initial size of the stack
Output:
none
\*****************************************************************************/
template<LinearStackTemplateList>
CLinearStackType::CLinearStack( const DWORD size )
: CObject<CAllocatorType>(),
m_ElementArray( size )
{
m_Count = 0;
}
/*****************************************************************************\
Function:
CLinearStack Destructor
Description:
Deletes internal data
Input:
none
Output:
none
\*****************************************************************************/
template<LinearStackTemplateList>
CLinearStackType::~CLinearStack( void )
{
}
/*****************************************************************************\
Function:
CLinearStack::IsEmpty
Description:
Returns if the stack is empty
Input:
none
Output:
bool - true or false
\*****************************************************************************/
template<LinearStackTemplateList>
bool CLinearStackType::IsEmpty( void ) const
{
return m_Count == 0;
}
/*****************************************************************************\
Function:
CLinearStack::GetCount
Description:
Returns the number of elements in the stack
Input:
none
Output:
DWORD - number of elements
\*****************************************************************************/
template<LinearStackTemplateList>
DWORD CLinearStackType::GetCount( void ) const
{
return m_Count;
}
/*****************************************************************************\
Function:
CLinearStack::Push
Description:
Pushes an element on the stack
Input:
const Type element
Output:
bool - success or fail
\*****************************************************************************/
template<LinearStackTemplateList>
bool CLinearStackType::Push( const Type element )
{
// Add element to the end of list
return m_ElementArray.SetElement( m_Count++, element );
}
/*****************************************************************************\
Function:
CLinearStack::Pop
Description:
Pops an element off the stack
Input:
none
Output:
Type - element
\*****************************************************************************/
template<LinearStackTemplateList>
Type CLinearStackType::Pop( void )
{
Type element = (Type)0;
if( IsEmpty() )
{
ASSERT(0);
}
else
{
// Get the last element on the list and
// remove the last element
element = m_ElementArray.GetElement( --m_Count );
}
return element;
}
/*****************************************************************************\
Function:
CLinearStack::Top
Description:
Returns the top element of the stack
Input:
none
Output:
Type - element
\*****************************************************************************/
template<LinearStackTemplateList>
Type CLinearStackType::Top( void ) const
{
Type element = (Type)0;
if( IsEmpty() )
{
ASSERT(0);
}
else
{
// Get the last element on the list
element = m_ElementArray.GetElement( m_Count-1 );
}
return element;
}
/*****************************************************************************\
Function:
CLinearStack::Reset
Description:
Resets the stack
Input:
none
Output:
none
\*****************************************************************************/
template<LinearStackTemplateList>
void CLinearStackType::Reset( void )
{
m_Count = 0;
}
/*****************************************************************************\
Function:
CLinearStack::DebugPrint
Description:
Prints the stack to std output for debug only
Input:
none
Output:
none
\*****************************************************************************/
template<LinearStackTemplateList>
void CLinearStackType::DebugPrint( void ) const
{
#ifdef _DEBUG
m_ElementArray.DebugPrint();
#endif
}
} // iSTD
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