Function GetOrComputeSourceFileData

internal/ast/ast.go:2422–2428

(file *SourceFile, key *SourceFileDataKey[T], compute func(*SourceFile) T)

}

func GetOrComputeSourceFileData[T any](file *SourceFile, key *SourceFileDataKey[T], compute func(*SourceFile) T) T {
	cell := getSourceFileDataCell(file, key)
	cell.once.Do(func() {
		cell.value = compute(file)
	})
	return cell.value
}

func getSourceFileDataCell[T any](file *SourceFile, key *SourceFileDataKey[T]) *sourceFileDataCell[T] {
	if key == nil || key.key == 0 {