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chore: Inverse if-else tree in Timeline

This commit is contained in:
NaiJi ✨ 2023-02-16 04:05:39 +04:00
parent 5af1b94e22
commit 1401e51918
1 changed files with 33 additions and 22 deletions
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55
include/core/timeline.h
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@ -15,7 +15,9 @@ template <class TNote,
class Timeline class Timeline
{ {
public: public:
explicit Timeline() : _current_offset(0) {} explicit Timeline() : _current_offset(0)
{
}
typedef typename std::set<TNote *>::const_iterator Iterator; typedef typename std::set<TNote *>::const_iterator Iterator;
@ -24,30 +26,30 @@ class Timeline
_current_offset = offset; _current_offset = offset;
expire(_top_note); expire(_top_note);
if (!_timeline.empty()) if (_timeline.empty())
return;
Iterator head_iterator = _timeline.begin();
while (!isExpired(head_iterator))
{ {
Iterator head_iterator = _timeline.begin(); if ((*head_iterator)->getPerfectOffset() >= offset)
while (!isExpired(head_iterator))
{ {
if ((*head_iterator)->getPerfectOffset() >= offset) Iterator pre_head = head_iterator;
{ --pre_head;
Iterator pre_head = head_iterator;
--pre_head;
_top_note = _top_note =
!isExpired(pre_head) && (*pre_head)->isActive(offset) !isExpired(pre_head) && (*pre_head)->isActive(offset)
? pre_head ? pre_head
: head_iterator; : head_iterator;
break; break;
}
++head_iterator;
} }
if (isExpired(_top_note)) ++head_iterator;
_top_note = _timeline.begin();
} }
if (isExpired(_top_note))
_top_note = _timeline.begin();
} }
void setNotes(const std::set<TNote *, NotePtrComparator> &notes) void setNotes(const std::set<TNote *, NotePtrComparator> &notes)
@ -128,11 +130,20 @@ class Timeline
iterator = _timeline.end(); iterator = _timeline.end();
} }
inline Iterator getTopNote() const noexcept { return _top_note; } inline Iterator getTopNote() const noexcept
{
return _top_note;
}
inline Iterator begin() const noexcept { return _timeline.begin(); } inline Iterator begin() const noexcept
{
return _timeline.begin();
}
inline Iterator end() const noexcept { return _timeline.end(); } inline Iterator end() const noexcept
{
return _timeline.end();
}
private: private:
std::set<TNote *, NotePtrComparator> _timeline; std::set<TNote *, NotePtrComparator> _timeline;