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AK: Add insert_before/insert_after to InlineLinkedList

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Tom 2020-12-01 11:48:41 -07:00 committed by Andreas Kling
parent 9a2a673e51
commit c6230b746d
Notes: sideshowbarker 2024-07-19 01:05:57 +09:00 
Author: https://github.com/tomuta
Commit: https://github.com/SerenityOS/serenity/commit/c6230b746d6
Pull-request: https://github.com/SerenityOS/serenity/pull/4298
1 changed files with 57 additions and 0 deletions
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57
AK/InlineLinkedList.h
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@ -120,6 +120,8 @@ public:
void append(T*);
void remove(T*);
void append(InlineLinkedList<T>&);
void insert_before(T*, T*);
void insert_after(T*, T*);
bool contains_slow(T* value) const
{
@ -130,6 +132,17 @@ public:
return false;
}
template<typename F>
IterationDecision for_each(F func) const
{
for (T* node = m_head; node; node = node->next()) {
IterationDecision decision = func(*node);
if (decision != IterationDecision::Continue)
return decision;
}
return IterationDecision::Continue;
}
using Iterator = InlineLinkedListIterator<T>;
friend Iterator;
Iterator begin() { return Iterator(m_head); }
@ -199,6 +212,50 @@ inline void InlineLinkedList<T>::append(T* node)
m_tail = node;
}
template<typename T>
inline void InlineLinkedList<T>::insert_before(T* before_node, T* node)
{
ASSERT(before_node);
ASSERT(node);
ASSERT(before_node != node);
ASSERT(!is_empty());
if (m_head == before_node) {
ASSERT(!before_node->prev());
m_head = node;
node->set_prev(0);
node->set_next(before_node);
before_node->set_prev(node);
} else {
ASSERT(before_node->prev());
node->set_prev(before_node->prev());
before_node->prev()->set_next(node);
node->set_next(before_node);
before_node->set_prev(node);
}
}
template<typename T>
inline void InlineLinkedList<T>::insert_after(T* after_node, T* node)
{
ASSERT(after_node);
ASSERT(node);
ASSERT(after_node != node);
ASSERT(!is_empty());
if (m_tail == after_node) {
ASSERT(!after_node->next());
m_tail = node;
node->set_prev(after_node);
node->set_next(0);
after_node->set_next(node);
} else {
ASSERT(after_node->next());
node->set_prev(after_node);
node->set_next(after_node->next());
after_node->next()->set_prev(node);
after_node->set_next(node);
}
}
template<typename T>
inline void InlineLinkedList<T>::remove(T* node)
{