library-mirrors/middleclass
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if walks like a class and talks like a class, it is a class

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kikito 2013-09-15 23:03:35 +02:00
parent f107a68a20
commit 491eb44628
1 changed files with 6 additions and 9 deletions
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15
middleclass.lua
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@ -27,8 +27,6 @@ local middleclass = {
]]
}
local _classes = setmetatable({}, {__mode = "k"})
local function _setClassDictionariesMetatables(klass)
local dict = klass.__instanceDict
dict.__index = dict
@ -58,7 +56,6 @@ local function _createClass(name, super)
_setClassDictionariesMetatables(klass)
_setClassMetatable(klass)
_classes[klass] = true
return klass
end
@ -103,7 +100,7 @@ Object.static.__metamethods = { '__add', '__call', '__concat', '__div', '__le',
'__mod', '__mul', '__pow', '__sub', '__tostring', '__unm' }
function Object.static:allocate()
assert(_classes[self], "Make sure that you are using 'Class:allocate' instead of 'Class.allocate'")
assert(self, "Make sure that you are using 'Class:allocate' instead of 'Class.allocate'")
return setmetatable({ class = self }, self.__instanceDict)
end
@ -114,7 +111,7 @@ function Object.static:new(...)
end
function Object.static:subclass(name)
assert(_classes[self], "Make sure that you are using 'Class:subclass' instead of 'Class.subclass'")
assert(self, "Make sure that you are using 'Class:subclass' instead of 'Class.subclass'")
assert(type(name) == "string", "You must provide a name(string) for your class")
local subclass = _createClass(name, self)
@ -129,7 +126,7 @@ end
function Object.static:subclassed(other) end
function Object.static:include( ... )
assert(_classes[self], "Make sure you that you are using 'Class:include' instead of 'Class.include'")
assert(self, "Make sure you that you are using 'Class:include' instead of 'Class.include'")
for _,mixin in ipairs({...}) do _includeMixin(self, mixin) end
return self
end
@ -144,18 +141,18 @@ function class(name, super, ...)
end
function instanceOf(aClass, obj)
if not _classes[aClass] or type(obj) ~= 'table' or not _classes[obj.class] then return false end
if type(aClass) ~= 'table' or type(obj) ~= 'table' or not obj.class then return false end
if obj.class == aClass then return true end
return subclassOf(aClass, obj.class)
end
function subclassOf(other, aClass)
if not _classes[aClass] or not _classes[other] or aClass.super == nil then return false end
if type(other) ~= 'table' or type(aClass) ~= 'table' or not aClass.super then return false end
return aClass.super == other or subclassOf(other, aClass.super)
end
function includes(mixin, aClass)
if not _classes[aClass] then return false end
if type(mixin) ~= 'table' or type(aClass) ~= 'table' or not aClass.__mixins then return false end
if aClass.__mixins[mixin] then return true end
return includes(mixin, aClass.super)
end