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// 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 mod provides core features related to go.mod file
// handling for use by Go editors and tools.
package mod
import (
"context"
"golang.org/x/tools/internal/event"
"golang.org/x/tools/internal/lsp/debug/tag"
"golang.org/x/tools/internal/lsp/protocol"
"golang.org/x/tools/internal/lsp/source"
)
func Diagnostics(ctx context.Context, snapshot source.Snapshot) (map[source.VersionedFileIdentity][]*source.Diagnostic, error) {
ctx, done := event.Start(ctx, "mod.Diagnostics", tag.Snapshot.Of(snapshot.ID()))
defer done()
reports := map[source.VersionedFileIdentity][]*source.Diagnostic{}
for _, uri := range snapshot.ModFiles() {
fh, err := snapshot.GetVersionedFile(ctx, uri)
if err != nil {
return nil, err
}
reports[fh.VersionedFileIdentity()] = []*source.Diagnostic{}
errors, err := ErrorsForMod(ctx, snapshot, fh)
if err != nil {
return nil, err
}
for _, e := range errors {
d := &source.Diagnostic{
Message: e.Message,
Range: e.Range,
Source: e.Category,
}
if e.Category == "syntax" || e.Kind == source.ListError {
d.Severity = protocol.SeverityError
} else {
d.Severity = protocol.SeverityWarning
}
fh, err := snapshot.GetVersionedFile(ctx, e.URI)
if err != nil {
return nil, err
}
reports[fh.VersionedFileIdentity()] = append(reports[fh.VersionedFileIdentity()], d)
}
}
return reports, nil
}
func ErrorsForMod(ctx context.Context, snapshot source.Snapshot, fh source.FileHandle) ([]*source.Error, error) {
pm, err := snapshot.ParseMod(ctx, fh)
if err != nil {
if pm == nil || len(pm.ParseErrors) == 0 {
return nil, err
}
return pm.ParseErrors, nil
}
tidied, err := snapshot.ModTidy(ctx, pm)
if source.IsNonFatalGoModError(err) {
return nil, nil
}
if err != nil {
return nil, err
}
return tidied.Errors, nil
}
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