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https://github.com/golang/go
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f02a19dded
This change adds command line support for symbols.
Symbols are formatted as '{name} {type} {range}', with
children being preceded by a \t.
Example:
$ gopls symbols ~/tmp/foo/main.go
$
$ x Variable 7:5-7:6
$ y Constant 9:7-9:8
$ Quux Struct 29:6-29:10
$ Do Method 37:16-37:18
$ X Field 30:2-30:3
$ Y Field 30:5-30:6
Updates golang/go#32875
Change-Id: I1272fce733fb12b67e3d6fb948f5bf3de4ca2ca1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/203609
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
81 lines
1.9 KiB
Go
81 lines
1.9 KiB
Go
// 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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"flag"
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"fmt"
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"sort"
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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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)
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// references implements the references verb for gopls
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type symbols struct {
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app *Application
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}
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func (r *symbols) Name() string { return "symbols" }
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func (r *symbols) Usage() string { return "<file>" }
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func (r *symbols) ShortHelp() string { return "display selected file's symbols" }
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func (r *symbols) DetailedHelp(f *flag.FlagSet) {
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fmt.Fprint(f.Output(), `
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Example:
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$ gopls symbols helper/helper.go
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`)
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f.PrintDefaults()
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}
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func (r *symbols) Run(ctx context.Context, args ...string) error {
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if len(args) != 1 {
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return tool.CommandLineErrorf("symbols expects 1 argument (position)")
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}
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conn, err := r.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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p := protocol.DocumentSymbolParams{
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TextDocument: protocol.TextDocumentIdentifier{
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URI: string(from.URI()),
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},
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}
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symbols, err := conn.DocumentSymbol(ctx, &p)
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if err != nil {
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return err
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}
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for _, s := range symbols {
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fmt.Println(symbolToString(s))
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// Sort children for consistency
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sort.Slice(s.Children, func(i, j int) bool {
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return s.Children[i].Name < s.Children[j].Name
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})
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for _, c := range s.Children {
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fmt.Println("\t" + symbolToString(c))
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}
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}
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return nil
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}
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func symbolToString(symbol protocol.DocumentSymbol) string {
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r := symbol.SelectionRange
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// convert ranges to user friendly 1-based positions
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position := fmt.Sprintf("%v:%v-%v:%v",
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r.Start.Line+1,
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r.Start.Character+1,
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r.End.Line+1,
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r.End.Character+1,
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)
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return fmt.Sprintf("%s %s %s", symbol.Name, symbol.Kind, position)
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}
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