support function types

[mhevery]

Given:

  method(fn: (V, K) => void) { ... }

Expected:

  method(void fn(V arg0, K arg1)) { ... }

Actual:

  method(dynamic /* (V, K) => void */ fn) { ... }

/cc: @vsmenon

[mprobst]

How does this interact with generic method types? Maybe this?

f/*<A, B>*/(dynamic/*=B*/ fn(dynamic/*=A*/ a)) {}

How does this look for recursive types function typed arguments, e.g. functions that take functions that take functions?

[vsmenon]

That looks correct on generics.

Here's an example with function typed arguments:

void foo(String bar(String baz())) {
  var result = bar(() => "hello");
  print(result);
}