gotools/gopls/internal/golang/diagnostics.go

// DiagnoseFile returns pull-based diagnostics for the given file.
func DiagnoseFile(ctx context.Context, snapshot *cache.Snapshot, uri protocol.DocumentURI) ([]*cache.Diagnostic, error) { … }

// Analyze reports go/analysis-framework diagnostics in the specified package.
//
// If the provided tracker is non-nil, it may be used to provide notifications
// of the ongoing analysis pass.
//
// TODO(rfindley): merge this with snapshot.Analyze.
func Analyze(ctx context.Context, snapshot *cache.Snapshot, pkgIDs map[PackageID]*metadata.Package, tracker *progress.Tracker) (map[protocol.DocumentURI][]*cache.Diagnostic, error) { … }

// byURI is used for grouping diagnostics.
func byURI(d *cache.Diagnostic) protocol.DocumentURI { … }

// CombineDiagnostics combines and filters list/parse/type diagnostics from
// tdiags with the analysis adiags, returning the resulting combined set.
//
// Type-error analyzers produce diagnostics that are redundant with type
// checker diagnostics, but more detailed (e.g. fixes). Rather than report two
// diagnostics for the same problem, we combine them by augmenting the
// type-checker diagnostic and discarding the analyzer diagnostic.
//
// If an analysis diagnostic has the same range and message as a
// list/parse/type diagnostic, the suggested fix information (et al) of the
// latter is merged into a copy of the former. This handles the case where a
// type-error analyzer suggests a fix to a type error, and avoids duplication.
//
// The arguments are not modified.
func CombineDiagnostics(tdiags []*cache.Diagnostic, adiags []*cache.Diagnostic) []*cache.Diagnostic { … }