please use CodeAction for related code generation

[sslime336]

Is your feature request related to a problem? Please describe.

Umm... no? The snippet like meth is helpful but I think below looks better.

Describe the solution you'd like

Like rust-analyzer and Goland, we can simply press Ctrl + . or Alt + Enter to generate a method of our own data structure.

RA(rust-analyzer):

Goland:

Describe alternatives you've considered
None.

Additional context

Actually I've written some very simple code to achieve this for fun, but my code is in poor quality and I am very new to vscode extension dev!

My fork, coded so poor :P

[hyangah]

Thanks for filing feature requests @sslime336
I see three different code actions

• Rustlang: generating impl based on rust struct. A similar one can be a code action on Go interface type, that generates a struct type.

• Goland's impl: This is similar to what the extension already offers x/tools/gopls: generate method stubs for a given interface go#37537 or Generate interface stubs adds structs parameter with package name #2364 (comment) Work to improve accessibility is necessary. Overcoming LSP limitation is currently the biggest challenge but we can also specialize for VS Code.

• Your demo code: Code action on a struct type that generates a new method.

[sslime336]

yeah, using CodeActions, I mean, just press Ctrl plus "." or Alt + Enter like Goland and select the options we needed may be more convenient :)

Actually I haven't thought about generateing a struct from an interface as you mentioned :P, that's a possible option (but I don't know how to find out where to generate the struct that will impl the selected interface, especially when the interface is in a read-only file, we need to figure out the correct place)

Currently, I have these ideas where the CodeAction can be used:

1. Generate methods from an exist user defined type, just like my demo.
2. Implement an interface for an exist user defined type (firstly it will invoke a quick pick like in the issues you mentioned).
3. Implement an interface for an user defined type, but the CodeAction will be invoked from a local or global variable.
4. As you first pointed, "generates a struct type" from an exist interface.

I'm not familiar with gopls so currently I could only think the ways to impl these features using TypeScript. But I'd like to learn more and mk a contribution as I depend on vscode-go seriously :-)

[gopherbot]

Change https://go.dev/cl/468658 mentions this issue: src/goGenerateMethod: make method generation more automatic