+++ /dev/null
-// 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 cmd
-
-import (
- "context"
- "encoding/json"
- "flag"
- "fmt"
- "sort"
-
- "golang.org/x/tools/internal/lsp/protocol"
- "golang.org/x/tools/internal/span"
- "golang.org/x/tools/internal/tool"
-)
-
-// symbols implements the symbols verb for gopls
-type symbols struct {
- app *Application
-}
-
-func (r *symbols) Name() string { return "symbols" }
-func (r *symbols) Usage() string { return "<file>" }
-func (r *symbols) ShortHelp() string { return "display selected file's symbols" }
-func (r *symbols) DetailedHelp(f *flag.FlagSet) {
- fmt.Fprint(f.Output(), `
-Example:
- $ gopls symbols helper/helper.go
-`)
- f.PrintDefaults()
-}
-func (r *symbols) Run(ctx context.Context, args ...string) error {
- if len(args) != 1 {
- return tool.CommandLineErrorf("symbols expects 1 argument (position)")
- }
-
- conn, err := r.app.connect(ctx)
- if err != nil {
- return err
- }
- defer conn.terminate(ctx)
-
- from := span.Parse(args[0])
- p := protocol.DocumentSymbolParams{
- TextDocument: protocol.TextDocumentIdentifier{
- URI: protocol.URIFromSpanURI(from.URI()),
- },
- }
- symbols, err := conn.DocumentSymbol(ctx, &p)
- if err != nil {
- return err
- }
- for _, s := range symbols {
- if m, ok := s.(map[string]interface{}); ok {
- s, err = mapToSymbol(m)
- if err != nil {
- return err
- }
- }
- switch t := s.(type) {
- case protocol.DocumentSymbol:
- printDocumentSymbol(t)
- case protocol.SymbolInformation:
- printSymbolInformation(t)
- }
- }
- return nil
-}
-
-func mapToSymbol(m map[string]interface{}) (interface{}, error) {
- b, err := json.Marshal(m)
- if err != nil {
- return nil, err
- }
-
- if _, ok := m["selectionRange"]; ok {
- var s protocol.DocumentSymbol
- if err := json.Unmarshal(b, &s); err != nil {
- return nil, err
- }
- return s, nil
- }
-
- var s protocol.SymbolInformation
- if err := json.Unmarshal(b, &s); err != nil {
- return nil, err
- }
- return s, nil
-}
-
-func printDocumentSymbol(s protocol.DocumentSymbol) {
- fmt.Printf("%s %s %s\n", s.Name, s.Kind, positionToString(s.SelectionRange))
- // Sort children for consistency
- sort.Slice(s.Children, func(i, j int) bool {
- return s.Children[i].Name < s.Children[j].Name
- })
- for _, c := range s.Children {
- fmt.Printf("\t%s %s %s\n", c.Name, c.Kind, positionToString(c.SelectionRange))
- }
-}
-
-func printSymbolInformation(s protocol.SymbolInformation) {
- fmt.Printf("%s %s %s\n", s.Name, s.Kind, positionToString(s.Location.Range))
-}
-
-func positionToString(r protocol.Range) string {
- return fmt.Sprintf("%v:%v-%v:%v",
- r.Start.Line+1,
- r.Start.Character+1,
- r.End.Line+1,
- r.End.Character+1,
- )
-}