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// Copyright (c) 1994 James Clark
// See the file COPYING for copying permission.
#ifndef IListBase_INCLUDED
#define IListBase_INCLUDED 1
#include "Link.h"
#include "Boolean.h"
#ifdef SP_NAMESPACE
namespace SP_NAMESPACE {
#endif
class SP_API IListBase {
public:
IListBase();
IListBase(Link *);
void append(Link *);
void insert(Link *);
Link *head() const;
Boolean empty() const;
Link *get();
void remove(Link *);
void swap(IListBase &);
void clear();
private:
Link *head_;
friend class IListIterBase;
};
inline
IListBase::IListBase() : head_(0)
{
}
inline
IListBase::IListBase(Link *head) : head_(head)
{
}
inline
void IListBase::insert(Link *p)
{
p->next_ = head_;
head_ = p;
}
inline
Link *IListBase::head() const
{
return head_;
}
inline
Boolean IListBase::empty() const
{
return head_ == 0;
}
inline
Link *IListBase::get()
{
Link *tem = head_;
head_ = head_->next_;
return tem;
}
inline
void IListBase::swap(IListBase &list)
{
Link *tem = head_;
head_ = list.head_;
list.head_ = tem;
}
#ifdef SP_NAMESPACE
}
#endif
#endif /* not IListBase_INCLUDED */
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