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go/internal/lsp/tests/links.go
Kalman Bekesi b8f202ca5e tools/gopls: add command line support for links
This adds support for calling links from the gopls command line,
e.g.

$ gopls links ~/tmp/foo/main.go

Optional arguments are:
-json, which emits range and uri in JSON
With no arguments, a unique list of links are emitted.

Updates golang/go#32875

Change-Id: I1e7cbf00a636c05ccf21bd544d9a5b7742d5d70b
GitHub-Last-Rev: 7ed1e4612186bce4077d3c73f2407cf6def211d9
GitHub-Pull-Request: golang/tools#181
Reviewed-on: https://go-review.googlesource.com/c/tools/+/203297
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-11-01 17:18:15 +00:00

56 lines
1.7 KiB
Go

// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package tests
import (
"fmt"
"go/token"
"golang.org/x/tools/internal/lsp/protocol"
"golang.org/x/tools/internal/span"
)
// DiffLinks takes the links we got and checks if they are located within the source or a Note.
// If the link is within a Note, the link is removed.
// Returns an diff comment if there are differences and empty string if no diffs
func DiffLinks(mapper *protocol.ColumnMapper, wantLinks []Link, gotLinks []protocol.DocumentLink) string {
var notePositions []token.Position
links := make(map[span.Span]string, len(wantLinks))
for _, link := range wantLinks {
links[link.Src] = link.Target
notePositions = append(notePositions, link.NotePosition)
}
for _, link := range gotLinks {
spn, err := mapper.RangeSpan(link.Range)
if err != nil {
return fmt.Sprintf("%v", err)
}
linkInNote := false
for _, notePosition := range notePositions {
// Drop the links found inside expectation notes arguments as this links are not collected by expect package
if notePosition.Line == spn.Start().Line() &&
notePosition.Column <= spn.Start().Column() {
delete(links, spn)
linkInNote = true
}
}
if linkInNote {
continue
}
if target, ok := links[spn]; ok {
delete(links, spn)
if target != link.Target {
return fmt.Sprintf("for %v want %v, got %v\n", spn, link.Target, target)
}
} else {
return fmt.Sprintf("unexpected link %v:%v\n", spn, link.Target)
}
}
for spn, target := range links {
return fmt.Sprintf("missing link %v:%v\n", spn, target)
}
return ""
}