directives

var (
	ErrInvalidDirectiveFile         = errors.New("Invalid directive file")
	ErrImportInvalidDirectiveFormat = errors.New("Directive file is importing using an invalid format")
	ErrDirectiveAlreadyImported     = errors.New("Directive already imported")
	ErrDirectiveNotFound            = errors.New("Directive not found")
	ErrDirectiveInvalidCore         = errors.New("Invalid directive (from the core)")
	ErrDirectiveCoreCantMove        = errors.New("Can't move core directives")
	ErrStackInvalidIndex            = errors.New("Invalid index")
)