103 lines
1.7 KiB
C++
103 lines
1.7 KiB
C++
/*
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* \brief Slightly improved list
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* \author Christian Helmuth
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* \date 2014-09-25
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*/
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/*
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* Copyright (C) 2014 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _LX_EMUL__IMPL__INTERNAL__LIST_H_
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#define _LX_EMUL__IMPL__INTERNAL__LIST_H_
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#include <util/list.h>
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namespace Lx {
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template <typename> class List;
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template <typename> class List_element;
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}
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template <typename LT>
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class Lx::List : private Genode::List<LT>
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{
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private:
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typedef Genode::List<LT> Base;
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public:
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using Base::Element;
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void append(LT const *le)
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{
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LT *at = nullptr;
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for (LT *l = first(); l; l = l->next())
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at = l;
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Base::insert(le, at);
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}
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void prepend(LT const *le)
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{
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Base::insert(le);
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}
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void insert_before(LT const *le, LT const *at)
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{
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if (at == first()) {
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prepend(le);
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return;
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} else if (!at) {
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append(le);
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return;
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}
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for (LT *l = first(); l; l = l->next())
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if (l->next() == at)
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at = l;
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Base::insert(le, at);
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}
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/****************************
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** Genode::List interface **
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****************************/
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LT *first() { return Base::first(); }
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LT const *first() const { return Base::first(); }
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void insert(LT const *le, LT const *at = 0)
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{
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Base::insert(le, at);
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}
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void remove(LT const *le)
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{
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Base::remove(le);
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}
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};
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template <typename T>
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class Lx::List_element : public Lx::List<List_element<T> >::Element
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{
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private:
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T *_object;
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public:
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List_element(T *object) : _object(object) { }
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T *object() const { return _object; }
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};
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#endif /* _LX_EMUL__IMPL__INTERNAL__LIST_H_ */
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