102 lines
2.6 KiB
Lua
102 lines
2.6 KiB
Lua
--[[
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Copyright (c) 2012-2013 Matthias Richter
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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Except as contained in this notice, the name(s) of the above copyright holders
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shall not be used in advertising or otherwise to promote the sale, use or
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other dealings in this Software without prior written authorization.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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]]--
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local Registry = {}
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Registry.__index = function(self, key)
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return Registry[key] or (function()
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local t = {}
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rawset(self, key, t)
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return t
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end)()
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end
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function Registry:register(s, f)
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self[s][f] = f
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return f
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end
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function Registry:emit(s, ...)
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for f in pairs(self[s]) do
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f(...)
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end
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end
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function Registry:remove(s, ...)
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local f = {...}
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for i = 1,select('#', ...) do
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self[s][f[i]] = nil
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end
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end
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function Registry:clear(...)
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local s = {...}
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for i = 1,select('#', ...) do
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self[s[i]] = {}
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end
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end
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function Registry:emitPattern(p, ...)
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for s in pairs(self) do
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if s:match(p) then self:emit(s, ...) end
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end
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end
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function Registry:registerPattern(p, f)
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for s in pairs(self) do
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if s:match(p) then self:register(s, f) end
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end
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return f
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end
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function Registry:removePattern(p, ...)
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for s in pairs(self) do
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if s:match(p) then self:remove(s, ...) end
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end
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end
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function Registry:clearPattern(p)
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for s in pairs(self) do
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if s:match(p) then self[s] = {} end
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end
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end
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-- instancing
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function Registry.new()
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return setmetatable({}, Registry)
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end
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-- default instance
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local default = Registry.new()
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-- module forwards calls to default instance
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local module = {}
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for k in pairs(Registry) do
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if k ~= "__index" then
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module[k] = function(...) return default[k](default, ...) end
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end
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end
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return setmetatable(module, {__call = Registry.new})
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