Automatic Interface Implementation

[JS]

I ripped and hacked up some code from typecons that allows one to 
implement an interface automatically by redirecting it to a 
variable implementing the interface.

http://dpaste.dzfl.pl/209e260b

To see the effectiveness of the code, notice that very little, if 
any, boilerplate code needs to be used to implement such a 
pattern:


interface A
{
	void foo();
	void foo2();
	int bar(int x);
	void bar(string c);
}

// Dummy class for A
class AA : A { void foo() { writeln("AA.foo");  } void foo2() { 
writeln("AA.foo2"); } int bar(int x) { writeln("AA.bar(int)"); 
return 0; }  void bar(string c) { writeln("AA.bar(string)"); } }

class B : A
{
	A a;

	void foo2() { writeln("B.foo2"); }
	mixin implementComposite!a;
}


I'm not sure how this code holds up though, it's possible 
templated classes and other more complex implementations may 
cause some problems....

It will probably do fine for what I need it to do but maybe 
someone else will find it useful or can make it better...