+containers

1 files changed, 111 insertions, 0 deletions

diff --git a/Resources/DefaultContent/Libraries/containers/queue.lua b/Resources/DefaultContent/Libraries/containers/queue.lua
new file mode 100644
index 0000000..126daa8
--- /dev/null
+++ b/Resources/DefaultContent/Libraries/containers/queue.lua
@@ -0,0 +1,111 @@
+---
+--- Generated by EmmyLua(https://github.com/EmmyLua)
+--- Created by Dee.
+--- DateTime: 2019/3/7 11:27
+--- FIFO
+---
+
+queue = queue or {}
+
+---@return Queue
+function queue.create()
+    ---数据容器
+    local data = {}
+    ---数据长度
+    local lenght = 0
+    ---队首索引
+    local first = 1
+
+    ---获取队首值
+    local peek = function()
+        return data[first]
+    end
+
+    ---压入数据
+    local enqueue = function(v)
+        assert(v ~= nil, "nil value")
+        first = lenght == 0 and 1 or first
+        lenght = lenght + 1
+        table.insert(data, first+lenght-1, v)
+    end
+
+    ---弹出数据
+    local dequeue = function()
+        assert(lenght > 0, "nill queue")
+
+        local ret = peek()
+        data[first] = nil
+        first = first+1
+        lenght = lenght - 1
+        first = lenght == 0 and 1 or first
+
+        if math.fmod(first, 4) == 0 then
+            local tmp = {}
+            table.move(data, first, first + lenght, 1, tmp)
+
+            first = 1
+            data = nil
+            data = tmp
+        end
+
+        return ret
+    end
+
+    local clear = function()
+        data = {}
+        first = 1
+        lenght = 0
+    end
+
+    local __tostring = function()
+        local tmp = {}
+        for i=1,lenght do
+            tmp[i] = data[i + first - 1]
+        end
+        return table.concat(tmp, ",")
+    end
+
+    local __len = function()
+        return lenght
+    end
+
+    local __index = function(i_t, key)
+        error(">> Dee: Limited access")
+    end
+
+    local __newindex = function(i_t, key, v)
+        error(">> Dee: Limited access")
+    end
+
+    local __ipairs = function(i_t)
+        local idx = 0
+        local function iter(i_t)
+            idx = idx + 1
+            if idx <= lenght then
+                return idx, data[first + idx - 1]
+            end
+        end
+
+        return iter
+    end
+
+    local __pairs = function(i_t)
+        error(">> Dee: Limited access")
+    end
+
+    local mt = {__tostring = __tostring, __index = __index, __newindex = __newindex, __ipairs = __ipairs, __pairs = __pairs, __len = __len}
+
+    ---@class Queue
+    local t = {
+        enqueue = enqueue,
+        dequeue = dequeue,
+        peek = peek,
+        clear = clear
+    }
+
+    setmetatable(t, mt)
+
+    return t
+end
+
+return queue