[swift-dev] Help: Get Generic Pattern Detail From TypeDecl in AST

[Daniel Duan]

Hi all,

Working on a swiftc crash in the type checker, I’m having a hard time with getting generic type pattern in the AST. For example, say we have parsed:

struct Y<T> {}
struct X<T, U> {
  let a: Y<T>
  let b: Y<U>
}


In the AST, the type of member “a” would be  “Y<T>". But I can’t figure out how to inspect the inner “T” from the TypeDecl instance that represents a’s type.

What am I missing here?

- Daniel