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go/internal/lsp/util.go
Ian Cottrell 75713da896 internal/lsp: add a file system abstraction
Change-Id: Ie42835b835ed22fddbba187ab10d8c31019ff008
Reviewed-on: https://go-review.googlesource.com/c/tools/+/178097
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
2019-05-24 13:48:47 +00:00

78 lines
1.7 KiB
Go

// 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"
"fmt"
"io"
"os/exec"
"golang.org/x/tools/internal/lsp/protocol"
"golang.org/x/tools/internal/lsp/source"
"golang.org/x/tools/internal/span"
)
// This writes the version and environment information to a writer.
func PrintVersionInfo(w io.Writer, verbose bool, markdown bool) {
if !verbose {
printBuildInfo(w, false)
return
}
fmt.Fprint(w, "#### Build info\n\n")
if markdown {
fmt.Fprint(w, "```\n")
}
printBuildInfo(w, true)
fmt.Fprint(w, "\n")
if markdown {
fmt.Fprint(w, "```\n")
}
fmt.Fprint(w, "\n#### Go info\n\n")
if markdown {
fmt.Fprint(w, "```\n")
}
cmd := exec.Command("go", "version")
cmd.Stdout = w
cmd.Run()
fmt.Fprint(w, "\n")
cmd = exec.Command("go", "env")
cmd.Stdout = w
cmd.Run()
if markdown {
fmt.Fprint(w, "```\n")
}
}
func getSourceFile(ctx context.Context, v source.View, uri span.URI) (source.File, *protocol.ColumnMapper, error) {
f, err := v.GetFile(ctx, uri)
if err != nil {
return nil, nil, err
}
filename, err := f.URI().Filename()
if err != nil {
return nil, nil, err
}
fc := f.Content(ctx)
if fc.Error != nil {
return nil, nil, fc.Error
}
m := protocol.NewColumnMapper(f.URI(), filename, f.FileSet(), f.GetToken(ctx), fc.Data)
return f, m, nil
}
func getGoFile(ctx context.Context, v source.View, uri span.URI) (source.GoFile, *protocol.ColumnMapper, error) {
f, m, err := getSourceFile(ctx, v, uri)
if err != nil {
return nil, nil, err
}
gof, ok := f.(source.GoFile)
if !ok {
return nil, nil, fmt.Errorf("not a go file %v", f.URI())
}
return gof, m, nil
}