blob: 98d33bf5a1db95baa25882e9422957826d1c381a [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"
"strings"
"golang.org/x/tools/internal/lsp/protocol"
"golang.org/x/tools/internal/lsp/source"
"golang.org/x/tools/internal/span"
)
func (s *Server) Diagnostics(ctx context.Context, v source.View, uri span.URI) {
if ctx.Err() != nil {
s.session.Logger().Errorf(ctx, "canceling diagnostics for %s: %v", uri, ctx.Err())
return
}
f, err := v.GetFile(ctx, uri)
if err != nil {
s.session.Logger().Errorf(ctx, "no file for %s: %v", uri, err)
return
}
// For non-Go files, don't return any diagnostics.
gof, ok := f.(source.GoFile)
if !ok {
return
}
reports, err := source.Diagnostics(ctx, v, gof, s.disabledAnalyses)
if err != nil {
s.session.Logger().Errorf(ctx, "failed to compute diagnostics for %s: %v", gof.URI(), err)
return
}
s.undeliveredMu.Lock()
defer s.undeliveredMu.Unlock()
for uri, diagnostics := range reports {
if err := s.publishDiagnostics(ctx, v, uri, diagnostics); err != nil {
if s.undelivered == nil {
s.undelivered = make(map[span.URI][]source.Diagnostic)
}
s.session.Logger().Errorf(ctx, "failed to deliver diagnostic for %s (will retry): %v", uri, err)
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 {
if err := s.publishDiagnostics(ctx, v, uri, diagnostics); err != nil {
s.session.Logger().Errorf(ctx, "failed to deliver diagnostic for %s (will not retry): %v", uri, err)
}
// If we fail to deliver the same diagnostics twice, just give up.
delete(s.undelivered, uri)
}
}
func (s *Server) publishDiagnostics(ctx context.Context, view source.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 := getSourceFile(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: strings.TrimSpace(diag.Message), // go list returns errors prefixed by newline
Range: rng,
Severity: severity,
Source: diag.Source,
})
}
return reports, nil
}