CODEWITHSUNDEEP
go
FPGA
FPGA

Reputation: 3855

Get names of structs that implement an interface or inherit a struct

Is it possible to get a slice of strings that represent the names of all types that implement an interface or inherit from a specific struct in a specific package using reflection?

Upvotes: 3

Views: 351

Answers (3)

Paul Hankin
Paul Hankin

Reputation: 58231

The go oracle can do this. https://godoc.org/code.google.com/p/go.tools/oracle

Here is the relevant section of the user manual.

Upvotes: 2

Ainar-G
Ainar-G

Reputation: 36199

AFAIK, you can't do this with reflect, since packages are kinda out of reflect's scope.

You can do this the same way godoc's static analysis works. That is, using code.google.com/p/go.tools/go/types to parse the package's source code and get the type info.

Upvotes: 2

Elwinar
Elwinar

Reputation: 9509

After some research on the reflect package's doc, I don't think it's possible. That's not the way reflection work in go: the interfaces mechanism not beeing declarative (but duck-typed instead), there is no such list of types.

That said, you may have more luck using the ast package to parse your project, get the list of types, and check wheter or not they implement an interface, then write some code to give you the said slice. That would add a step to compilation, but could work like a charm.

Upvotes: 4

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