blob: 040c3837933cb32c6165d0e4418e7e324ddf5369 [file] [log] [blame]
// 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 lsp
import (
"context"
"golang.org/x/tools/internal/lsp/cache"
"golang.org/x/tools/internal/lsp/protocol"
"golang.org/x/tools/internal/lsp/source"
"golang.org/x/tools/internal/span"
)
func (s *Server) cacheAndDiagnose(ctx context.Context, uri span.URI, content string) error {
view := s.findView(ctx, uri)
if err := view.SetContent(ctx, uri, []byte(content)); err != nil {
return err
}
go func() {
ctx := view.BackgroundContext()
s.Diagnostics(ctx, view, uri)
}()
return nil
}
func (s *Server) Diagnostics(ctx context.Context, view *cache.View, uri span.URI) {
if ctx.Err() != nil {
s.log.Errorf(ctx, "canceling diagnostics for %s: %v", uri, ctx.Err())
return
}
reports, err := source.Diagnostics(ctx, view, uri)
if err != nil {
s.log.Errorf(ctx, "failed to compute diagnostics for %s: %v", uri, err)
return
}
s.undeliveredMu.Lock()
defer s.undeliveredMu.Unlock()
for uri, diagnostics := range reports {
if err := s.publishDiagnostics(ctx, view, uri, diagnostics); err != nil {
if s.undelivered == nil {
s.undelivered = make(map[span.URI][]source.Diagnostic)
}
s.undelivered[uri] = diagnostics
continue
}
// In case we had old, undelivered diagnostics.
delete(s.undelivered, uri)
}
// Anytime we compute diagnostics, make sure to also send along any
// undelivered ones (only for remaining URIs).
for uri, diagnostics := range s.undelivered {
s.publishDiagnostics(ctx, view, uri, diagnostics)
// If we fail to deliver the same diagnostics twice, just give up.
delete(s.undelivered, uri)
}
}
func (s *Server) publishDiagnostics(ctx context.Context, view *cache.View, uri span.URI, diagnostics []source.Diagnostic) error {
protocolDiagnostics, err := toProtocolDiagnostics(ctx, view, diagnostics)
if err != nil {
return err
}
s.client.PublishDiagnostics(ctx, &protocol.PublishDiagnosticsParams{
Diagnostics: protocolDiagnostics,
URI: protocol.NewURI(uri),
})
return nil
}
func toProtocolDiagnostics(ctx context.Context, v source.View, diagnostics []source.Diagnostic) ([]protocol.Diagnostic, error) {
reports := []protocol.Diagnostic{}
for _, diag := range diagnostics {
_, m, err := newColumnMap(ctx, v, diag.Span.URI())
if err != nil {
return nil, err
}
var severity protocol.DiagnosticSeverity
switch diag.Severity {
case source.SeverityError:
severity = protocol.SeverityError
case source.SeverityWarning:
severity = protocol.SeverityWarning
}
rng, err := m.Range(diag.Span)
if err != nil {
return nil, err
}
reports = append(reports, protocol.Diagnostic{
Message: diag.Message,
Range: rng,
Severity: severity,
Source: diag.Source,
})
}
return reports, nil
}