mirror of
https://github.com/golang/go
synced 2024-11-18 19:44:46 -07:00
40960b6deb
This change fixes a nil error, in addition to cleaning up a spacing error and a typo. It also fixes the golint errors in internal/lsp/cmd. Updates golang/go#30091 Change-Id: I24867bb878fda4e341f87d31bbec701a3814a341 Reviewed-on: https://go-review.googlesource.com/c/161220 Reviewed-by: Ian Cottrell <iancottrell@google.com> Run-TryBot: Rebecca Stambler <rstambler@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
72 lines
1.9 KiB
Go
72 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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"golang.org/x/tools/internal/tool"
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)
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const (
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// The set of possible options that can be passed through the -emulate flag,
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// which causes query to adjust its output to match that of the binary being
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// emulated.
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// emulateGuru tells query to emulate the output format of the guru tool.
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emulateGuru = "guru"
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)
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// query implements the query command.
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type query struct {
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JSON bool `flag:"json" help:"emit output in JSON format"`
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Emulate string `flag:"emulate" help:"compatibility mode, causes gopls to emulate another tool.\nvalues depend on the operation being performed"`
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app *Application
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}
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func (q *query) Name() string { return "query" }
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func (q *query) Usage() string { return "query [flags] <mode> <mode args>" }
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func (q *query) ShortHelp() string {
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return "answer queries about go source code"
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}
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func (q *query) DetailedHelp(f *flag.FlagSet) {
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fmt.Fprint(f.Output(), `
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The mode argument determines the query to perform:
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`)
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for _, m := range q.modes() {
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fmt.Fprintf(f.Output(), " %s : %v\n", m.Name(), m.ShortHelp())
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}
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fmt.Fprint(f.Output(), `
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query flags are:
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`)
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f.PrintDefaults()
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}
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// Run takes the args after command flag processing, and invokes the correct
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// query mode as specified by the first argument.
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func (q *query) Run(ctx context.Context, args ...string) error {
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if len(args) == 0 {
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return tool.CommandLineErrorf("query must be supplied a mode")
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}
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mode, args := args[0], args[1:]
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for _, m := range q.modes() {
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if m.Name() == mode {
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tool.Main(ctx, m, args)
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return nil
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}
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}
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return tool.CommandLineErrorf("unknown command %v", mode)
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}
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// modes returns the set of modes supported by the query command.
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func (q *query) modes() []tool.Application {
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return []tool.Application{
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&definition{query: q},
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}
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}
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