tuple_transformer.rb in bmg-0.23.2

- old
+ new

@@ -1,8 +1,10 @@
 module Bmg
   class TupleTransformer
 
+    Callable = ->(t) { t.respond_to?(:call) }
+
     def initialize(transformation)
       @transformation = transformation
     end
 
     def self.new(arg)
@@ -24,11 +26,11 @@
 
     private
 
       def transform_tuple(tuple, with)
         case with
-        when Symbol, Proc, Regexp
+        when Symbol, Proc, Regexp, Callable
           tuple.each_with_object({}){|(k,v),dup|
             dup[k] = transform_attr(v, with)
           }
         when Hash
           with.each_with_object(tuple.dup){|(k,v),dup|
@@ -70,16 +72,16 @@
           elsif with == String
             value.to_s
           else
             raise ArgumentError, "#{with} should respond to `parse`"
           end
-        when Proc
+        when Proc, Callable
           with.call(value)
         when Hash
           with[value]
         else
           raise ArgumentError, "Unexpected transformation `#{with.inspect}`"
         end
       end
 
   end # module TupleTransformer
-end # module Bmg
\ No newline at end of file
+end # module Bmg