diff options
Diffstat (limited to 'indra/newview/scripts/lua/util.lua')
| -rw-r--r-- | indra/newview/scripts/lua/util.lua | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/indra/newview/scripts/lua/util.lua b/indra/newview/scripts/lua/util.lua index a2191288f6..bfbfc8637c 100644 --- a/indra/newview/scripts/lua/util.lua +++ b/indra/newview/scripts/lua/util.lua @@ -2,6 +2,31 @@ local util = {} +-- Allow MyClass(ctor args...) equivalent to MyClass:new(ctor args...) +-- Usage: +-- local MyClass = {} +-- function MyClass:new(...) +-- ... +-- end +-- ... +-- util.classctor(MyClass) +-- or if your constructor is named something other than MyClass:new(), e.g. +-- MyClass:construct(): +-- util.classctor(MyClass, MyClass.construct) +-- return MyClass +function util.classctor(class, ctor) + -- get the metatable for the passed class + local mt = getmetatable(class) + if mt == nil then + -- if it doesn't already have a metatable, then create one + mt = {} + setmetatable(class, mt) + end + -- now that class has a metatable, set its __call method to the specified + -- constructor method (class.new if not specified) + mt.__call = ctor or class.new +end + -- check if array-like table contains certain value function util.contains(t, v) return table.find(t, v) ~= nil |