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// Copyright 2020 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"
"fmt"
"sort"
"golang.org/x/tools/internal/event"
"golang.org/x/tools/internal/lsp/mod"
"golang.org/x/tools/internal/lsp/protocol"
"golang.org/x/tools/internal/lsp/source"
)
func (s *Server) codeLens(ctx context.Context, params *protocol.CodeLensParams) ([]protocol.CodeLens, error) {
snapshot, fh, ok, release, err := s.beginFileRequest(ctx, params.TextDocument.URI, source.UnknownKind)
defer release()
if !ok {
return nil, err
}
var lensFuncs map[string]source.LensFunc
switch fh.Kind() {
case source.Mod:
lensFuncs = mod.LensFuncs()
case source.Go:
lensFuncs = source.LensFuncs()
default:
// Unsupported file kind for a code lens.
return nil, nil
}
var result []protocol.CodeLens
for lens, lf := range lensFuncs {
if !snapshot.View().Options().Codelenses[lens] {
continue
}
added, err := lf(ctx, snapshot, fh)
// Code lens is called on every keystroke, so we should just operate in
// a best-effort mode, ignoring errors.
if err != nil {
event.Error(ctx, fmt.Sprintf("code lens %s failed", lens), err)
continue
}
result = append(result, added...)
}
sort.Slice(result, func(i, j int) bool {
a, b := result[i], result[j]
if protocol.CompareRange(a.Range, b.Range) == 0 {
return a.Command.Command < b.Command.Command
}
return protocol.CompareRange(a.Range, b.Range) < 0
})
return result, nil
}
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