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elua: wrap multiple-return properties

This commit is contained in:
Daniel Kolesa 2014-04-17 10:08:00 +01:00 committed by Daniel Kolesa
parent b2aa896932
commit 6e119370e9
1 changed files with 13 additions and 2 deletions
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15
src/bin/elua/core/util.lua
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@ -48,6 +48,15 @@ local init_setters = function(self)
return strs
end
local wrap_retvals = function(f)
return function()
local vals = { f() }
if #vals == 0 then return end
if #vals > 1 then return vals end
return vals[1]
end
end
M.Object = {
__call = function(self, ...)
local r = self:clone()
@ -78,14 +87,16 @@ M.Object = {
define_property = function(self, propname, get, set)
if get then
init_getters(self)[propname] = get
init_getters(self)[propname] = wrap_retvals(get)
end
if set then
init_setters(self)[propname] = set
init_setters(self)[propname] = wrap_retvals(set)
end
end,
define_property_key = function(self, propname, get, set)
if get then get = wrap_retvals(get) end
if set then set = wrap_retvals(set) end
local proxy = setmetatable({}, {
__index = function(proxy, key)
if get then return get(self, key) end