60 lines
1.2 KiB
C++
60 lines
1.2 KiB
C++
|
|
#ifndef __STACK_H__
|
|
#define __STACK_H__
|
|
|
|
/*
|
|
===============================================================================
|
|
|
|
Stack template
|
|
|
|
===============================================================================
|
|
*/
|
|
|
|
#define idStack( type, next ) idStackTemplate<type, (int)&(((type*)NULL)->next)>
|
|
|
|
template< class type, int nextOffset >
|
|
class idStackTemplate {
|
|
public:
|
|
idStackTemplate( void );
|
|
|
|
void Add( type *element );
|
|
type * Get( void );
|
|
|
|
private:
|
|
type * top;
|
|
type * bottom;
|
|
};
|
|
|
|
#define STACK_NEXT_PTR( element ) (*(type**)(((byte*)element)+nextOffset))
|
|
|
|
template< class type, int nextOffset >
|
|
idStackTemplate<type,nextOffset>::idStackTemplate( void ) {
|
|
top = bottom = NULL;
|
|
}
|
|
|
|
template< class type, int nextOffset >
|
|
void idStackTemplate<type,nextOffset>::Add( type *element ) {
|
|
STACK_NEXT_PTR(element) = top;
|
|
top = element;
|
|
if ( !bottom ) {
|
|
bottom = element;
|
|
}
|
|
}
|
|
|
|
template< class type, int nextOffset >
|
|
type *idStackTemplate<type,nextOffset>::Get( void ) {
|
|
type *element;
|
|
|
|
element = top;
|
|
if ( element ) {
|
|
top = STACK_NEXT_PTR(top);
|
|
if ( bottom == element ) {
|
|
bottom = NULL;
|
|
}
|
|
STACK_NEXT_PTR(element) = NULL;
|
|
}
|
|
return element;
|
|
}
|
|
|
|
#endif /* !__STACK_H__ */
|