mirror of https://github.com/golang/go.git
94 lines
2.6 KiB
Go
94 lines
2.6 KiB
Go
// Copyright 2022 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 work
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import (
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"context"
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"fmt"
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"os"
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"path/filepath"
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"golang.org/x/mod/modfile"
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"golang.org/x/tools/internal/event"
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"golang.org/x/tools/internal/lsp/debug/tag"
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"golang.org/x/tools/internal/lsp/protocol"
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"golang.org/x/tools/internal/lsp/source"
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"golang.org/x/tools/internal/span"
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)
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func Diagnostics(ctx context.Context, snapshot source.Snapshot) (map[source.VersionedFileIdentity][]*source.Diagnostic, error) {
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ctx, done := event.Start(ctx, "work.Diagnostics", tag.Snapshot.Of(snapshot.ID()))
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defer done()
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reports := map[source.VersionedFileIdentity][]*source.Diagnostic{}
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uri := snapshot.WorkFile()
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if uri == "" {
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return nil, nil
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}
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fh, err := snapshot.GetVersionedFile(ctx, uri)
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if err != nil {
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return nil, err
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}
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reports[fh.VersionedFileIdentity()] = []*source.Diagnostic{}
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diagnostics, err := DiagnosticsForWork(ctx, snapshot, fh)
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if err != nil {
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return nil, err
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}
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for _, d := range diagnostics {
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fh, err := snapshot.GetVersionedFile(ctx, d.URI)
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if err != nil {
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return nil, err
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}
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reports[fh.VersionedFileIdentity()] = append(reports[fh.VersionedFileIdentity()], d)
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}
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return reports, nil
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}
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func DiagnosticsForWork(ctx context.Context, snapshot source.Snapshot, fh source.FileHandle) ([]*source.Diagnostic, error) {
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pw, err := snapshot.ParseWork(ctx, fh)
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if err != nil {
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if pw == nil || len(pw.ParseErrors) == 0 {
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return nil, err
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}
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return pw.ParseErrors, nil
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}
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// Add diagnostic if a directory does not contain a module.
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var diagnostics []*source.Diagnostic
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for _, use := range pw.File.Use {
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rng, err := source.LineToRange(pw.Mapper, fh.URI(), use.Syntax.Start, use.Syntax.End)
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if err != nil {
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return nil, err
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}
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modfh, err := snapshot.GetFile(ctx, modFileURI(pw, use))
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if err != nil {
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return nil, err
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}
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if _, err := modfh.Read(); err != nil && os.IsNotExist(err) {
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diagnostics = append(diagnostics, &source.Diagnostic{
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URI: fh.URI(),
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Range: rng,
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Severity: protocol.SeverityError,
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Source: source.UnknownError, // Do we need a new source for this?
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Message: fmt.Sprintf("directory %v does not contain a module", use.Path),
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})
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}
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}
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return diagnostics, nil
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}
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func modFileURI(pw *source.ParsedWorkFile, use *modfile.Use) span.URI {
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workdir := filepath.Dir(pw.URI.Filename())
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modroot := filepath.FromSlash(use.Path)
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if !filepath.IsAbs(modroot) {
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modroot = filepath.Join(workdir, modroot)
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}
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return span.URIFromPath(filepath.Join(modroot, "go.mod"))
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}
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