lib/rubype.rb in rubype-0.2.4 vs lib/rubype.rb in rubype-0.2.5

@@ -1,5 +1,7 @@
+require 'rubype/ordinal'
+
 # Builtin Contracts
 class  Any;     end
 module Boolean; end
 TrueClass.send(:include, Boolean)
 FalseClass.send(:include, Boolean)
@@ -20,20 +22,23 @@
       self
     end
 end
 
 class Method
+  # @return [Hash]: { [ArgInfo_1, ArgInfo_2, ... ArgInfo_n] => RtnInfo }
   def type_info
     if methods_hash = Rubype.typed_method_info[owner]
       methods_hash[name]
     end
   end
 
+  # @return [Array<Class, Symbol>]: [ArgInfo_1, ArgInfo_2, ... ArgInfo_n]
   def arg_types
     type_info.first.first if type_info
   end
 
+  # @return [Class, Symbol]: RtnInfo
   def return_type
     type_info.first.last if type_info
   end
 end
 
@@ -78,13 +83,13 @@
       def assert_arg_type(meth_caller, meth, args, type_infos)
         args.zip(type_infos).each.with_index(1) do |(arg, type_info), i|
           case type_check(arg, type_info)
           when :need_correct_class
             raise ArgumentTypeError,
-              "Expected #{meth_caller.class}##{meth}'s #{i}th argument to be #{type_info} but got #{arg.inspect} instead"
+              "Expected #{meth_caller.class}##{meth}'s #{i}#{ordinal(i)} argument to be #{type_info} but got #{arg.inspect} instead"
           when :need_correct_method
             raise ArgumentTypeError,
-              "Expected #{meth_caller.class}##{meth}'s #{i}th argument to have method ##{type_info} but got #{arg.inspect} instead"
+              "Expected #{meth_caller.class}##{meth}'s #{i}#{ordinal(i)} argument to have method ##{type_info} but got #{arg.inspect} instead"
           end
         end
       end
 
       # @param caller [Module]