Method collectCheckerDiagnostics

internal/compiler/program.go:567–578

collectCheckerDiagnostics collects diagnostics from a single file or all files, using a callback that receives the checker for each file. When the checker pool supports grouped iteration (compiler pool), files are grouped by checker and processed in parallel with one task per checker, reducing conte

(ctx context.Context, sourceFile *ast.SourceFile, collect func(context.Context, *checker.Checker, *ast.SourceFile) []*ast.Diagnostic)

// processed in parallel with one task per checker, reducing contention and improving
// cache locality. Otherwise, falls back to per-file concurrent collection.
func (p *Program) collectCheckerDiagnostics(ctx context.Context, sourceFile *ast.SourceFile, collect func(context.Context, *checker.Checker, *ast.SourceFile) []*ast.Diagnostic) []*ast.Diagnostic {
	if sourceFile != nil {
		if p.SkipTypeChecking(sourceFile, false) {
			return nil
		}
		c, done := p.GetTypeCheckerForFileExclusive(ctx, sourceFile)
		result := collect(ctx, c, sourceFile)
		done()
		return SortAndDeduplicateDiagnostics(result)
	}
	return SortAndDeduplicateDiagnostics(slices.Concat(p.collectCheckerDiagnosticsFromFiles(ctx, p.files, collect)...))
}

// collectCheckerDiagnosticsFromFiles collects checker diagnostics for a list of files.
func (p *Program) collectCheckerDiagnosticsFromFiles(ctx context.Context, sourceFiles []*ast.SourceFile, collect func(context.Context, *checker.Checker, *ast.SourceFile) []*ast.Diagnostic) [][]*ast.Diagnostic {