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// 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 lsp
import (
"context"
"golang.org/x/tools/internal/event"
"golang.org/x/tools/internal/lsp/debug/tag"
"golang.org/x/tools/internal/lsp/protocol"
"golang.org/x/tools/internal/lsp/source"
)
func (s *Server) documentSymbol(ctx context.Context, params *protocol.DocumentSymbolParams) ([]interface{}, error) {
ctx, done := event.Start(ctx, "lsp.Server.documentSymbol")
defer done()
snapshot, fh, ok, release, err := s.beginFileRequest(ctx, params.TextDocument.URI, source.Go)
defer release()
if !ok {
return []interface{}{}, err
}
docSymbols, err := source.DocumentSymbols(ctx, snapshot, fh)
if err != nil {
event.Error(ctx, "DocumentSymbols failed", err, tag.URI.Of(fh.URI()))
return []interface{}{}, nil
}
// Convert the symbols to an interface array.
// TODO: Remove this once the lsp deprecates SymbolInformation.
symbols := make([]interface{}, len(docSymbols))
for i, s := range docSymbols {
if snapshot.View().Options().HierarchicalDocumentSymbolSupport {
symbols[i] = s
continue
}
// If the client does not support hierarchical document symbols, then
// we need to be backwards compatible for now and return SymbolInformation.
symbols[i] = protocol.SymbolInformation{
Name: s.Name,
Kind: s.Kind,
Deprecated: s.Deprecated,
Location: protocol.Location{
URI: params.TextDocument.URI,
Range: s.Range,
},
}
}
return symbols, nil
}
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