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# Author A. B. G. Chalk, STFC Daresbury Lab
# -----------------------------------------------------------------------------

''' This module contains the Clause abstract node implementation '''

import abc
from psyclone.psyir.nodes.node import Node


class Clause(Node, metaclass=abc.ABCMeta):
    '''
    Base abstract class for all clauses.
    '''
    _children_valid_format = None
    _text_name = "Clause"
    # The base string for this clause, e.g. nowait or private
    _clause_string = None

    @property
    def clause_string(self):
        '''
        Returns the clause string for this Clause

        :rtype: str
        '''
        return self._clause_string
