зеркало из https://github.com/golang/tools.git
80 строки
2.0 KiB
Go
80 строки
2.0 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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"errors"
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"flag"
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"fmt"
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"golang.org/x/tools/gopls/internal/protocol"
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"golang.org/x/tools/internal/tool"
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)
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// prepareRename implements the prepare_rename verb for gopls.
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type prepareRename struct {
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app *Application
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}
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func (r *prepareRename) Name() string { return "prepare_rename" }
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func (r *prepareRename) Parent() string { return r.app.Name() }
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func (r *prepareRename) Usage() string { return "<position>" }
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func (r *prepareRename) ShortHelp() string { return "test validity of a rename operation at location" }
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func (r *prepareRename) DetailedHelp(f *flag.FlagSet) {
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fmt.Fprint(f.Output(), `
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Example:
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$ # 1-indexed location (:line:column or :#offset) of the target identifier
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$ gopls prepare_rename helper/helper.go:8:6
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$ gopls prepare_rename helper/helper.go:#53
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`)
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printFlagDefaults(f)
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}
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// ErrInvalidRenamePosition is returned when prepareRename is run at a position that
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// is not a candidate for renaming.
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var ErrInvalidRenamePosition = errors.New("request is not valid at the given position")
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func (r *prepareRename) Run(ctx context.Context, args ...string) error {
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if len(args) != 1 {
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return tool.CommandLineErrorf("prepare_rename expects 1 argument (file)")
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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 := parseSpan(args[0])
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file, err := conn.openFile(ctx, from.URI())
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if err != nil {
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return err
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}
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loc, err := file.spanLocation(from)
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if err != nil {
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return err
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}
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p := protocol.PrepareRenameParams{
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TextDocumentPositionParams: protocol.LocationTextDocumentPositionParams(loc),
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}
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result, err := conn.PrepareRename(ctx, &p)
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if err != nil {
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return fmt.Errorf("prepare_rename failed: %w", err)
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}
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if result == nil {
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return ErrInvalidRenamePosition
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}
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s, err := file.rangeSpan(result.Range)
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if err != nil {
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return err
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}
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fmt.Println(s)
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return nil
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}
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