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internal/lsp: allow fine-grained control over vet checks

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This change adds an "experimentalDisabledAnalyses" configuration
to the "gopls" configuration. A user can specify a list of excluded
analyses by analyzer name.

Fixes golang/go#31717

Change-Id: I4b162fcd61ecfcef5c926bd0e96f182748a7721d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/179920
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
This commit is contained in:
Rebecca Stambler 2019-05-31 23:31:58 -04:00
parent bca362e842
commit fe937a7521
6 changed files with 25 additions and 9 deletions
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2
internal/lsp/diagnostics.go
View File

@ -28,7 +28,7 @@ func (s *Server) Diagnostics(ctx context.Context, v source.View, uri span.URI) {
if !ok {
return
}
reports, err := source.Diagnostics(ctx, v, gof)
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

9
internal/lsp/general.go
View File

@ -188,6 +188,15 @@ func (s *Server) processConfig(view source.View, config interface{}) error {
if noDocsOnHover, ok := c["noDocsOnHover"].(bool); ok {
s.noDocsOnHover = noDocsOnHover
}
// Check if the user has explicitly disabled any analyses.
if disabledAnalyses, ok := c["experimentalDisabledAnalyses"].([]interface{}); ok {
s.disabledAnalyses = make(map[string]struct{})
for _, a := range disabledAnalyses {
if a, ok := a.(string); ok {
s.disabledAnalyses[a] = struct{}{}
}
}
}
return nil
}

2
internal/lsp/lsp_test.go
View File

@ -68,7 +68,7 @@ func (r *runner) Diagnostics(t *testing.T, data tests.Diagnostics) {
if !ok {
t.Fatalf("%s is not a Go file: %v", uri, err)
}
results, err := source.Diagnostics(context.Background(), v, gof)
results, err := source.Diagnostics(context.Background(), v, gof, nil)
if err != nil {
t.Fatal(err)
}

1
internal/lsp/server.go
View File

@ -79,6 +79,7 @@ type Server struct {
configurationSupported bool
dynamicConfigurationSupported bool
preferredContentFormat protocol.MarkupKind
disabledAnalyses map[string]struct{}
textDocumentSyncKind protocol.TextDocumentSyncKind

18
internal/lsp/source/diagnostics.go
View File

@ -51,7 +51,7 @@ const (
SeverityError
)
func Diagnostics(ctx context.Context, v View, f GoFile) (map[span.URI][]Diagnostic, error) {
func Diagnostics(ctx context.Context, v View, f GoFile, disabledAnalyses map[string]struct{}) (map[span.URI][]Diagnostic, error) {
pkg := f.GetPackage(ctx)
if pkg == nil {
return singleDiagnostic(f.URI(), "%s is not part of a package", f.URI()), nil
@ -70,7 +70,7 @@ func Diagnostics(ctx context.Context, v View, f GoFile) (map[span.URI][]Diagnost
// Run diagnostics for the package that this URI belongs to.
if !diagnostics(ctx, v, pkg, reports) {
// If we don't have any list, parse, or type errors, run analyses.
if err := analyses(ctx, v, pkg, reports); err != nil {
if err := analyses(ctx, v, pkg, disabledAnalyses, reports); err != nil {
v.Session().Logger().Errorf(ctx, "failed to run analyses for %s: %v", f.URI(), err)
}
}
@ -126,9 +126,9 @@ func diagnostics(ctx context.Context, v View, pkg Package, reports map[span.URI]
return len(diags) != 0
}
func analyses(ctx context.Context, v View, pkg Package, reports map[span.URI][]Diagnostic) error {
func analyses(ctx context.Context, v View, pkg Package, disabledAnalyses map[string]struct{}, reports map[span.URI][]Diagnostic) error {
// Type checking and parsing succeeded. Run analyses.
if err := runAnalyses(ctx, v, pkg, func(a *analysis.Analyzer, diag analysis.Diagnostic) error {
if err := runAnalyses(ctx, v, pkg, disabledAnalyses, func(a *analysis.Analyzer, diag analysis.Diagnostic) error {
r := span.NewRange(v.Session().Cache().FileSet(), diag.Pos, diag.End)
s, err := r.Span()
if err != nil {
@ -234,9 +234,10 @@ func singleDiagnostic(uri span.URI, format string, a ...interface{}) map[span.UR
}
}
func runAnalyses(ctx context.Context, v View, pkg Package, report func(a *analysis.Analyzer, diag analysis.Diagnostic) error) error {
func runAnalyses(ctx context.Context, v View, pkg Package, disabledAnalyses map[string]struct{}, report func(a *analysis.Analyzer, diag analysis.Diagnostic) error) error {
// The traditional vet suite:
analyzers := []*analysis.Analyzer{
var analyzers []*analysis.Analyzer
for _, a := range []*analysis.Analyzer{
asmdecl.Analyzer,
assign.Analyzer,
atomic.Analyzer,
@ -259,6 +260,11 @@ func runAnalyses(ctx context.Context, v View, pkg Package, report func(a *analys
unreachable.Analyzer,
unsafeptr.Analyzer,
unusedresult.Analyzer,
} {
if _, ok := disabledAnalyses[a.Name]; ok {
continue
}
analyzers = append(analyzers, a)
}
roots, err := analyze(ctx, v, []Package{pkg}, analyzers)

2
internal/lsp/source/source_test.go
View File

@ -55,7 +55,7 @@ func (r *runner) Diagnostics(t *testing.T, data tests.Diagnostics) {
if err != nil {
t.Fatal(err)
}
results, err := source.Diagnostics(context.Background(), r.view, f.(source.GoFile))
results, err := source.Diagnostics(context.Background(), r.view, f.(source.GoFile), nil)
if err != nil {
t.Fatal(err)
}