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Support nesting Parent (#48)

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* allow nesting parent property

* update changelog

* fix mock instances Parent property not being a proxy

* add tests

Closes #47
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EwDev 2025-02-23 22:31:26 +01:00 • committed by GitHub
parent 7064489a36
commit 37e8e05206
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4 changed files with 39 additions and 21 deletions
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35
test/mock.luau
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@ -86,6 +86,9 @@ local Instance = {} :: any do
local proxies = {} :: { [Data]: userdata? }
setmetatable(proxies :: any, { __mode = "v" })
-- allocate variables for the metamethods as __index and get_proxy cross refrences each other
local __index, __newindex
local function get_data(userdata: userdata): Data
local function f(userdata: userdata): ProxyMT
return getmetatable(userdata :: any)
@ -94,6 +97,19 @@ local Instance = {} :: any do
return f(userdata).data
end
local function get_proxy(data: Data): userdata
return proxies[data] or (function()
local userdata = newproxy(true)
local proxy = getmetatable(userdata)
proxy.proxy = userdata
proxy.data = data
proxy.__index = __index
proxy.__newindex = __newindex
proxies[data] = userdata
return userdata
end)()
end
local function is_instance(value: unknown): boolean
local mt = getmetatable(value :: any)
return mt and mt.data and mt.data.type == "Instance"
@ -101,16 +117,16 @@ local Instance = {} :: any do
local methods = {}
local function __index(userdata: userdata, property: string): ()
__index = function(userdata: userdata, property: string): ()
local data = get_data(userdata)
return if methods[property] then methods[property]
elseif property == "Name" then data.name
elseif property == "Parent" then data.parent
elseif property == "Parent" then (data.parent and get_proxy(data.parent))
elseif property == "Destroying" then data.destroying
else data.properties[property]
end
local function __newindex(userdata: userdata, property: string, value: unknown)
__newindex = function(userdata: userdata, property: string, value: unknown)
local data = get_data(userdata)
if property == "Name" then
if type(value) ~= "string" then error("name must be a string", 2) end
@ -135,19 +151,6 @@ local Instance = {} :: any do
end
end
local function get_proxy(data: Data): userdata
return proxies[data] or (function()
local userdata = newproxy(true)
local proxy = getmetatable(userdata)
proxy.proxy = userdata
proxy.data = data
proxy.__index = __index
proxy.__newindex = __newindex
proxies[data] = userdata
return userdata
end)()
end
function Instance.new(class: string): Instance
local data = {
name = "UNNAMED",