Need better COH

[Jason Macaronie]

COH = Code object hierarchy.

It would be very cool if we had access to the complete code set 
in, say, an associative array:

COH["mymodule"]["myclass"]["myinnerclass"]["foo"][0].ReturnType

would be the return type for the first 
mymodule.myclass.myinnerclass.foo

COH["mymodule"]["myclass"]["myinnerclass"]["foo"][0].Attributes[0]

would be the first attribute of the first function foo(for 
multiple overloads)

COH["mymodule"]["myclass"].methods

would return the methods of myclass

COH["mymodule"]["myclass"].methods.find("foo")

COH["mymodule"]["myclass"]["myinnerclass"]["foo"][0].Signature
COH["mymodule"]["myclass"]["myinnerclass"]["foo"][0].CodeBlock
COH["mymodule"]["myclass"]["myinnerclass"]["foo"][0].Contract
COH["mymodule"]["myclass"]["myinnerclass"]["foo"][0].Signature
COH["mymodule"]["myclass"]["myinnerclass"]["foo"][0].Attrubutes
etc...

The point being, regardless of how it is done it would be handy 
to have a structured way of accessing code at compile time. The 
compiler would fill in all the data in a lazy way(but attempt to 
fill in as much as possible before running ctfe's).

It would be analogous to DOM in javascript but allow things like 
replacing a code block:

COH["mymodule"]["myclass"]["myinnerclass"]["foo"][0].CodeBlock.replace("return;");

This might be easy to do already using opDispatch and opIndex to 
wrap a bunch of traits calls?