gotools/gopls/internal/golang/gc_annotations.go

// GCOptimizationDetails invokes the Go compiler on the specified
// package and reports its log of optimizations decisions as a set of
// diagnostics.
//
// TODO(adonovan): this feature needs more consistent and informative naming.
// Now that the compiler is cmd/compile, "GC" now means only "garbage collection".
// I propose "(Toggle|Display) Go compiler optimization details" in the UI,
// and CompilerOptimizationDetails for this function and compileropts.go for the file.
func GCOptimizationDetails(ctx context.Context, snapshot *cache.Snapshot, mp *metadata.Package) (map[protocol.DocumentURI][]*cache.Diagnostic, error) { … }

func parseDetailsFile(filename string, options *settings.Options) (protocol.DocumentURI, []*cache.Diagnostic, error) { … }

// showDiagnostic reports whether a given diagnostic should be shown to the end
// user, given the current options.
func showDiagnostic(msg, source string, o *settings.Options) bool { … }

// The range produced by the compiler is 1-indexed, so subtract range by 1.
func zeroIndexedRange(rng protocol.Range) protocol.Range { … }

func findJSONFiles(dir string) ([]string, error) { … }