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x/tools/gopls: iferr completion content should adjust according to return type of function in scope #65885

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golopot opened this issue Feb 22, 2024 · 3 comments
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gopls Issues related to the Go language server, gopls. Tools This label describes issues relating to any tools in the x/tools repository.
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@golopot
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golopot commented Feb 22, 2024

gopls version

golang.org/x/tools/gopls v0.14.2 golang.org/x/tools/gopls@v0.14.2 h1:sIw6vjZiuQ9S7s0auUUkHlWgsCkKZFWDHmrge8LYsnc= github.com/BurntSushi/toml@v1.2.1 h1:9F2/+DoOYIOksmaJFPw1tGFy1eDnIJXg+UHjuD8lTak= github.com/google/go-cmp@v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38= github.com/sergi/go-diff@v1.1.0 h1:we8PVUC3FE2uYfodKH/nBHMSetSfHDR6scGdBi+erh0= golang.org/x/exp/typeparams@v0.0.0-20221212164502-fae10dda9338 h1:2O2DON6y3XMJiQRAS1UWU+54aec2uopH3x7MAiqGW6Y= golang.org/x/mod@v0.14.0 h1:dGoOF9QVLYng8IHTm7BAyWqCqSheQ5pYWGhzW00YJr0= golang.org/x/sync@v0.4.0 h1:zxkM55ReGkDlKSM+Fu41A+zmbZuaPVbGMzvvdUPznYQ= golang.org/x/sys@v0.14.0 h1:Vz7Qs629MkJkGyHxUlRHizWJRG2j8fbQKjELVSNhy7Q= golang.org/x/telemetry@v0.0.0-20231114163143-69313e640400 h1:brbkEFfGwNGAEkykUOcryE/JiHUMMJouzE0fWWmz/QU= golang.org/x/text@v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k= golang.org/x/tools@v0.14.1-0.20231114185516-c9d3e7de13fd h1:Oku7E+OCrXHyst1dG1z10etCTxewCHXNFLRlyMPbh3w= golang.org/x/vuln@v1.0.1 h1:KUas02EjQK5LTuIx1OylBQdKKZ9jeugs+HiqO5HormU= honnef.co/go/tools@v0.4.5 h1:YGD4H+SuIOOqsyoLOpZDWcieM28W47/zRO7f+9V3nvo= mvdan.cc/gofumpt@v0.4.0 h1:JVf4NN1mIpHogBj7ABpgOyZc65/UUOkKQFkoURsz4MM= mvdan.cc/xurls/v2@v2.4.0 h1:tzxjVAj+wSBmDcF6zBB7/myTy3gX9xvi8Tyr28AuQgc= go: go1.21.6

go env

.

What did you do?

Accept iferr completion in a function of type func() error

What did you see happen?

Completes to
if err != nil { return nil, err }

What did you expect to see?

Completes to if err != nil { return err }

Editor and settings

No response

Logs

No response

@golopot golopot added gopls Issues related to the Go language server, gopls. Tools This label describes issues relating to any tools in the x/tools repository. labels Feb 22, 2024
@gopherbot gopherbot added this to the Unreleased milestone Feb 22, 2024
@hyangah
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hyangah commented Feb 23, 2024

Are you using VS Code Go extension?

If so, it's likely this is coming from the vscode go extension side
https://github.com/golang/vscode-go/blob/0b3fabc4c832194f59ca913f36f048aecd1f78ae/extension/snippets/go.json#L114.
This adds one more reason to deprecate this legacy snippet (golang/vscode-go#160)

For example, this screenshot is the sign that this completion comes from vscode-go side snippets.
Screenshot 2024-02-23 at 1 02 15 PM

@golopot
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golopot commented Feb 23, 2024

Yes I am using VS Code Go extension

@suzmue
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suzmue commented Feb 29, 2024

There is a similar feature in gopls, postfix completion https://go.dev/issue/64178. It can be triggered by typing . after a variable of an error type (for example err.). It is return value aware and fills in the non-error return values as well, leaving the cursor where the returned error value will be.

iferr

This feature could be modified to work without the postfix, so will leave this open as a feature request for that.

@suzmue suzmue modified the milestones: Unreleased, gopls/backlog Mar 25, 2024
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Labels
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