aster
aster is Go library exposing a high level interface for parsing Go code with
go/ast. It is named after the ship of the character Ronan the Accuser
in the Marvel Cinematic Universe, the Dark
Aster.
Background
Right now aster only has a very limited set of functionality that met my immediate needs. PRs for
more are welcome!
I needed the ability to retrieve objects from code that had comments matching certain patterns
attached to them, similar to how kubebuilder works
with code markers. I knew ast could do this,
but found the interface very complex. What was a Decl and when
is something a GenDecl vs FuncDecl? How do I figure out what the type of an object is (i.e.
struct vs func vs something else)? And once I actually retrieve the right Decl, how do I get
its name or what its members / fields are?
The goal of aster was to be able to say "here's a pattern, find me all objects that have
comments matching it attached, and tell me what they are and, if applicable, what their fields are."
For a simple example, see the astersample program.