CONCORD IS DEAD

Long live Concord!!

concord/components.lua

@@ -7,42 +7,51 @@ local Type = require(PATH..".type")
 
 local Components = {}
 
---- Registers a ComponentClass.
--- @string name Name to register under
--- @tparam Component componentClass ComponentClass to register
-function Components.register(name, componentClass)
-    if (type(name) ~= "string") then
-        error("bad argument #1 to 'Components.register' (string expected, got "..type(name)..")", 3)
+local try = function (name)
+    if type(name) ~= "string" then
+        return false, "ComponentsClass name is expected to be a string, got "..type(name)..")"
     end
 
-    if (not Type.isComponentClass(componentClass)) then
-        error("bad argument #2 to 'Components.register' (ComponentClass expected, got "..type(componentClass)..")", 3)
+    local value = rawget(Components, name)
+    if not value then
+        return false, "ComponentClass '"..name.."' does not exist / was not registered"
     end
 
-    if (rawget(Components, name)) then
-        error("bad argument #2 to 'Components.register' (ComponentClass with name '"..name.."' was already registerd)", 3) -- luacheck: ignore
-    end
-
-    Components[name] = componentClass
-    componentClass.__name = name
+    return true, value
 end
 
 --- Returns true if the containter has the ComponentClass with the specified name
 -- @string name Name of the ComponentClass to check
 -- @treturn boolean
 function Components.has(name)
-    return Components[name] and true or false
+    return rawget(Components, name) and true or false
+end
+
+--- Returns true and the ComponentClass if one was registered with the specified name
+-- or false and an error otherwise
+-- @string name Name of the ComponentClass to check
+-- @treturn boolean
+-- @treturn Component or error string
+function Components.try(name)
+    return try(name)
 end
 
 --- Returns the ComponentClass with the specified name
 -- @string name Name of the ComponentClass to get
 -- @treturn Component
 function Components.get(name)
-    return Components[name]
+    local ok, value = try(name)
+
+    if not ok then error(value, 2) end
+
+    return value
 end
 
 return setmetatable(Components, {
     __index = function(_, name)
-        error("Attempt to index ComponentClass '"..tostring(name).."' that does not exist / was not registered", 2)
-    end
+        local ok, value = try(name)
+
+        if not ok then error(value, 2) end
+    
+        return value    end
 })