Adds support for Moonscript classes (#6)

Many thanks to @buckle2000

README.md

@@ -47,5 +47,5 @@ send me a pull request!
 
 ## You can register classes?
 
-Yes. At the moment, bitser supports MiddleClass, SECL, hump.class and Slither (and
+Yes. At the moment, bitser supports MiddleClass, SECL, hump.class, Slither and Moonscript classes (and
 probably some other class libraries by accident).

bitser.lua

@@ -176,7 +176,8 @@ local function write_table(value, seen)
 	local classname = (class_name_registry[value.class] -- MiddleClass
 		or class_name_registry[value.__baseclass] -- SECL
 		or class_name_registry[getmetatable(value)] -- hump.class
-		or class_name_registry[value.__class__]) -- Slither
+		or class_name_registry[value.__class__] -- Slither
+		or class_name_registry[value.__class]) -- Moonscript class
 	if classname then
 		classkey = classkey_registry[classname]
 		Buffer_write_byte(242)
@@ -354,6 +355,10 @@ local function deserialize_Slither(instance, class)
 	return getmetatable(class).allocate(instance)
 end
 
+local function deserialize_Moonscript(instance, class)
+	return setmetatable(instance, class.__base)
+end
+
 return {dumps = function(value)
 	serialize(value)
 	return ffi.string(buf, buf_pos)
@@ -381,7 +386,7 @@ end, unregister = function(name)
 end, registerClass = function(name, class, classkey, deserializer)
 	if not class then
 		class = name
-		name = class.__name__ or class.name
+		name = class.__name__ or class.name or class.__name
 	end
 	if not classkey then
 		if class.__instanceDict then
@@ -391,7 +396,7 @@ end, registerClass = function(name, class, classkey, deserializer)
 			-- assume SECL
 			classkey = '__baseclass'
 		end
-		-- assume hump.class, Slither, or something else that doesn't store the
+		-- assume hump.class, Slither, Moonscript class or something else that doesn't store the
 		-- class directly on the instance
 	end
 	if not deserializer then
@@ -407,6 +412,9 @@ end, registerClass = function(name, class, classkey, deserializer)
 		elseif class.__name__ then
 			-- assume Slither
 			deserializer = deserialize_Slither
+		elseif class.__base then
+			-- assume Moonscript class
+			deserializer = deserialize_Moonscript
 		else
 			error("no deserializer given for unsupported class library")
 		end

spec/bitser_spec.lua

@@ -163,6 +163,37 @@ describe("bitser", function()
 		assert.is_true(class.isinstance(serdeser(bojack), Horse))
 		bitser.unregisterClass('Horse')
 	end)
+	it("serializes Moonscript class instances", function()
+		local Horse
+		do
+			local _class_0
+			local _base_0 = {}
+			_base_0.__index = _base_0
+			_class_0 = setmetatable({
+				__init = function(self, name)
+					self.name = name
+					self[1] = 'instance can be sequence'
+				end,
+				__base = _base_0,
+				__name = "Horse"}, {
+				__index = _base_0,
+				__call = function(cls, ...)
+						local _self_0 = setmetatable({}, _base_0)
+						cls.__init(_self_0, ...)
+						return _self_0
+					end
+				})
+			_base_0.__class = _class_0
+			Horse = _class_0
+		end
+		assert.are.same(Horse.__name, "Horse") -- to shut coveralls up
+		bitser.registerClass(Horse)
+		local bojack = Horse('Bojack Horseman')
+		test_serdeser(bojack)
+		local new_bojack = serdeser(bojack)
+		assert.are.equal(new_bojack.__class, Horse)
+		bitser.unregisterClass('Horse')
+	end)
 	it("serializes custom class instances", function()
 		local Horse_mt = bitser.registerClass('Horse', {__index = {}}, nil, setmetatable)
 		local function Horse(name)