mirror of
https://github.com/golang/go
synced 2024-11-19 01:44:40 -07:00
3576414c54
This change separates a cache package out of the golang.org/x/tools/internal/lsp/source package. The source package now uses an interface instead a File struct, which will allow it be reused more easily. The cache package contains the View and File structs now. Change-Id: Ia2114e9dafc5214c8b21bceba3adae1c36b9799d Reviewed-on: https://go-review.googlesource.com/c/152798 Reviewed-by: Ian Cottrell <iancottrell@google.com>
95 lines
2.3 KiB
Go
95 lines
2.3 KiB
Go
// Copyright 2018 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 source
|
|
|
|
import (
|
|
"context"
|
|
"go/token"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"golang.org/x/tools/go/packages"
|
|
)
|
|
|
|
type Diagnostic struct {
|
|
token.Position
|
|
Message string
|
|
}
|
|
|
|
func Diagnostics(ctx context.Context, f File) (map[string][]Diagnostic, error) {
|
|
pkg, err := f.GetPackage()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
// Prepare the reports we will send for this package.
|
|
reports := make(map[string][]Diagnostic)
|
|
for _, filename := range pkg.GoFiles {
|
|
reports[filename] = []Diagnostic{}
|
|
}
|
|
var parseErrors, typeErrors []packages.Error
|
|
for _, err := range pkg.Errors {
|
|
switch err.Kind {
|
|
case packages.ParseError:
|
|
parseErrors = append(parseErrors, err)
|
|
case packages.TypeError:
|
|
typeErrors = append(typeErrors, err)
|
|
default:
|
|
// ignore other types of errors
|
|
continue
|
|
}
|
|
}
|
|
// Don't report type errors if there are parse errors.
|
|
diags := typeErrors
|
|
if len(parseErrors) > 0 {
|
|
diags = parseErrors
|
|
}
|
|
for _, diag := range diags {
|
|
pos := errorPos(diag)
|
|
diagnostic := Diagnostic{
|
|
Position: pos,
|
|
Message: diag.Msg,
|
|
}
|
|
if _, ok := reports[pos.Filename]; ok {
|
|
reports[pos.Filename] = append(reports[pos.Filename], diagnostic)
|
|
}
|
|
}
|
|
return reports, nil
|
|
}
|
|
|
|
// FromTokenPosition converts a token.Position (1-based line and column
|
|
// number) to a token.Pos (byte offset value).
|
|
// It requires the token file the pos belongs to in order to do this.
|
|
func FromTokenPosition(f *token.File, pos token.Position) token.Pos {
|
|
line := lineStart(f, pos.Line)
|
|
return line + token.Pos(pos.Column-1) // TODO: this is wrong, bytes not characters
|
|
}
|
|
|
|
func errorPos(pkgErr packages.Error) token.Position {
|
|
remainder1, first, hasLine := chop(pkgErr.Pos)
|
|
remainder2, second, hasColumn := chop(remainder1)
|
|
var pos token.Position
|
|
if hasLine && hasColumn {
|
|
pos.Filename = remainder2
|
|
pos.Line = second
|
|
pos.Column = first
|
|
} else if hasLine {
|
|
pos.Filename = remainder1
|
|
pos.Line = first
|
|
}
|
|
return pos
|
|
}
|
|
|
|
func chop(text string) (remainder string, value int, ok bool) {
|
|
i := strings.LastIndex(text, ":")
|
|
if i < 0 {
|
|
return text, 0, false
|
|
}
|
|
v, err := strconv.ParseInt(text[i+1:], 10, 64)
|
|
if err != nil {
|
|
return text, 0, false
|
|
}
|
|
return text[:i], int(v), true
|
|
}
|