implement Method#curry, add comments to failing example, remove working examples from tags file

tak1n · tak1n · commit 6304e7dfb557 · 2015-05-28T11:48:54.000+02:00
diff --git a/kernel/common/method.rb b/kernel/common/method.rb
@@ -141,6 +141,12 @@ def to_proc
     Proc.from_method self
   end
 
+  ##
+  # Calls curry on the method in proc representation
+  def curry(n = nil)
+    to_proc.curry(n)
+  end
+
   ##
   # Detach this Method from the receiver object it is bound to and create an
   # UnboundMethod object. Populates the UnboundMethod with the method data as
diff --git a/spec/ruby/core/method/curry_spec.rb b/spec/ruby/core/method/curry_spec.rb
@@ -25,7 +25,15 @@ def x.foo(a,b,c); [a,b,c]; end
 
     it "raises ArgumentError when the method requires less arguments than the given arity" do
       lambda { @obj.method(:zero).curry(1) }.should raise_error(ArgumentError)
+
+      # a method with one optional param would be something like: lambda { |a,b=nil| a + (b||0) }
+      # which doesn't work on rubinius:
+      # irb(main):002:0> b = lambda { |a,b=nil| a + (b||0) }
+      #   Error validating bytecode: more arguments than local slots
+      #   Rubinius::Internal: invalid bytecode method
       lambda { @obj.method(:one_req_one_opt).curry(3) }.should raise_error(ArgumentError)
+
+      # same as above optional param in lambda/proc
       lambda { @obj.method(:two_req_one_opt_with_block).curry(4) }.should raise_error(ArgumentError)
     end
 
diff --git a/spec/tags/ruby/core/method/curry_tags.txt b/spec/tags/ruby/core/method/curry_tags.txt
@@ -1,4 +1 @@
-fails:Method#curry returns a curried proc
-fails:Method#curry with optional arity argument returns a curried proc when given correct arity
 fails:Method#curry with optional arity argument raises ArgumentError when the method requires less arguments than the given arity
-fails:Method#curry with optional arity argument raises ArgumentError when the method requires more arguments than the given arity
