# Source code for rdflib.exceptions

    """
    TODO:
    """

    __all__ = ['Error', 'TypeCheckError', 'SubjectTypeError',
               'PredicateTypeError', 'ObjectTypeError', 'ContextTypeError',
               'ParserError']

    class Error(Exception):
        """Base class for rdflib exceptions."""
        def __init__(self, msg=None):
            Exception.__init__(self, msg)
            self.msg = msg

    class TypeCheckError(Error):
        """Parts of assertions are subject to type checks."""

        def __init__(self, node):
            Error.__init__(self, node)
            self.type = type(node)
            self.node = node

    class SubjectTypeError(TypeCheckError):
        """Subject of an assertion must be an instance of URIRef."""
        def __init__(self, node):
            TypeCheckError.__init__(self, node)
            self.msg = "Subject must be instance of URIRef or BNode: %s(%s)" \
                % (self.node, self.type)

    class PredicateTypeError(TypeCheckError):
        """Predicate of an assertion must be an instance of URIRef."""
        def __init__(self, node):
            TypeCheckError.__init__(self, node)
            self.msg = "Predicate must be a URIRef instance: %s(%s)" \
                % (self.node, self.type)

    class ObjectTypeError(TypeCheckError):
        """Object of an assertion must be an instance of URIRef, Literal,
        or BNode."""
        def __init__(self, node):
            TypeCheckError.__init__(self, node)
            self.msg = "\
    Object must be instance of URIRef, Literal, or BNode: %s(%s)" % \
                (self.node, self.type)

    class ContextTypeError(TypeCheckError):
        """Context of an assertion must be an instance of URIRef."""
        def __init__(self, node):
            TypeCheckError.__init__(self, node)
            self.msg = "Context must be instance of URIRef or BNode: %s(%s)" \
                % (self.node, self.type)

    class ParserError(Error):
        """RDF Parser error."""
        def __init__(self, msg):
            Error.__init__(self, msg)
            self.msg = msg

        def __str__(self):
            return self.msg

    class UniquenessError(Error):
        """A uniqueness assumption was made in the context, and that is not true"""
        def __init__(self, values):
            Error.__init__(self, "\
    Uniqueness assumption is not fulfilled. Multiple values are: %s" % values)