mirror of
https://github.com/golang/go
synced 2024-11-19 04:14:45 -07:00
78 lines
1.8 KiB
Go
78 lines
1.8 KiB
Go
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// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package cmd
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import (
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"context"
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"encoding/json"
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"flag"
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"fmt"
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"os"
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"golang.org/x/tools/internal/lsp/protocol"
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"golang.org/x/tools/internal/span"
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"golang.org/x/tools/internal/tool"
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errors "golang.org/x/xerrors"
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)
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// links implements the links verb for gopls.
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type links struct {
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JSON bool `flag:"json" help:"emit document links in JSON format"`
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app *Application
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}
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func (l *links) Name() string { return "links" }
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func (l *links) Usage() string { return "<filename>" }
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func (l *links) ShortHelp() string { return "list links in a file" }
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func (l *links) DetailedHelp(f *flag.FlagSet) {
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fmt.Fprintf(f.Output(), `
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Example: list links contained within a file:
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$ gopls links internal/lsp/cmd/check.go
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gopls links flags are:
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`)
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f.PrintDefaults()
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}
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// Run finds all the links within a document
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// - if -json is specified, outputs location range and uri
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// - otherwise, prints the a list of unique links
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func (l *links) Run(ctx context.Context, args ...string) error {
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if len(args) != 1 {
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return tool.CommandLineErrorf("links expects 1 argument")
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}
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conn, err := l.app.connect(ctx)
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if err != nil {
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return err
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}
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defer conn.terminate(ctx)
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from := span.Parse(args[0])
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uri := from.URI()
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file := conn.AddFile(ctx, uri)
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if file.err != nil {
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return file.err
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}
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results, err := conn.DocumentLink(ctx, &protocol.DocumentLinkParams{
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TextDocument: protocol.TextDocumentIdentifier{
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URI: protocol.NewURI(uri),
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},
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})
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if err != nil {
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return errors.Errorf("%v: %v", from, err)
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}
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if l.JSON {
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enc := json.NewEncoder(os.Stdout)
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enc.SetIndent("", "\t")
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return enc.Encode(results)
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}
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for _, v := range results {
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fmt.Println(v.Target)
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}
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return nil
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}
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