51 lines
1 KiB
Lua
51 lines
1 KiB
Lua
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XQueue = XClass(nil, "XQueue")
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function XQueue:Ctor()
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self:Clear()
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end
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function XQueue:Clear()
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self.__Container = {}
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self.__StartIndex = 1
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self.__EndIndex = 0
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end
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function XQueue:IsEmpty()
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return self.__StartIndex > self.__EndIndex
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end
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function XQueue:Count()
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return self.__EndIndex - self.__StartIndex + 1
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end
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function XQueue:Enqueue(element)
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if not element then return end
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local endIndex = self.__EndIndex + 1
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self.__EndIndex = endIndex
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self.__Container[endIndex] = element
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end
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function XQueue:EnqueueFront(element)
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self.__Container[self.__StartIndex - 1] = element
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self.__StartIndex = self.__StartIndex - 1
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end
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function XQueue:Dequeue()
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if self:IsEmpty() then
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self:Clear()
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return
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end
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local startIndex = self.__StartIndex
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local element = self.__Container[startIndex]
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self.__StartIndex = startIndex + 1
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self.__Container[startIndex] = nil
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return element
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end
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function XQueue:Peek()
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return self.__Container[self.__StartIndex]
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end
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