55 lines
1 KiB
Lua
55 lines
1 KiB
Lua
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local currentPath = (...):match('(.-)[^%./]+$')
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--- @class IUILib
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local iui = require(currentPath .. "iui")
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--- @class IUIPool
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local pool = {}
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--- @class (exact) IUIPoolStack
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--- @field top number
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--- @field items any[]
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--- @type table<string, IUIPoolStack>
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local entries = {}
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--- @param typename string
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--- @return IUIPoolStack
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local function getPool(typename)
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local out = entries[typename]
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if not out then
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out = { top = 0, items = {} }
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entries[typename] = out
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end
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return out
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end
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--- @generic T
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--- @param typename string
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--- @return T object
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function pool.get(typename)
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local stack = getPool(typename)
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if stack.top == 0 then
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return {
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_typename = typename
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}
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else
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local value = stack.items[stack.top]
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stack.top = stack.top - 1
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return value
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end
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end
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--- @generic T
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--- @param obj T
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function pool.put(obj)
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local stack = getPool(obj["_typename"])
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stack.top = stack.top + 1
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stack.items[stack.top] = obj
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end
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iui.pool = pool
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