Added printing requirements

zope/schema/_bootstrapinterfaces.py

@@ -0,0 +1,120 @@
+##############################################################################
+#
+# Copyright (c) 2002 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Bootstrap schema interfaces and exceptions
+"""
+import zope.interface
+
+from zope.schema._messageid import _
+
+
+class StopValidation(Exception):
+    """Raised if the validation is completed early.
+
+    Note that this exception should be always caught, since it is just
+    a way for the validator to save time.
+    """
+
+
+class ValidationError(zope.interface.Invalid):
+    """Raised if the Validation process fails."""
+
+    def doc(self):
+        return self.__class__.__doc__
+
+    def __cmp__(self, other):
+        if not hasattr(other, 'args'):
+            return -1
+        return cmp(self.args, other.args)
+
+    def __eq__(self, other):
+        if not hasattr(other, 'args'):
+            return False
+        return self.args == other.args
+
+    __hash__ = zope.interface.Invalid.__hash__  # python3
+
+    def __repr__(self):  # pragma: no cover
+        return '%s(%s)' % (self.__class__.__name__,
+               ', '.join(repr(arg) for arg in self.args))
+
+
+class RequiredMissing(ValidationError):
+    __doc__ = _("""Required input is missing.""")
+
+
+class WrongType(ValidationError):
+    __doc__ = _("""Object is of wrong type.""")
+
+
+class TooBig(ValidationError):
+    __doc__ = _("""Value is too big""")
+
+
+class TooSmall(ValidationError):
+    __doc__ = _("""Value is too small""")
+
+
+class TooLong(ValidationError):
+    __doc__ = _("""Value is too long""")
+
+
+class TooShort(ValidationError):
+    __doc__ = _("""Value is too short""")
+
+
+class InvalidValue(ValidationError):
+    __doc__ = _("""Invalid value""")
+
+
+class ConstraintNotSatisfied(ValidationError):
+    __doc__ = _("""Constraint not satisfied""")
+
+
+class NotAContainer(ValidationError):
+    __doc__ = _("""Not a container""")
+
+
+class NotAnIterator(ValidationError):
+    __doc__ = _("""Not an iterator""")
+
+
+class IFromUnicode(zope.interface.Interface):
+    """Parse a unicode string to a value
+
+    We will often adapt fields to this interface to support views and
+    other applications that need to conver raw data as unicode
+    values.
+    """
+
+    def fromUnicode(str):
+        """Convert a unicode string to a value.
+        """
+
+
+class IContextAwareDefaultFactory(zope.interface.Interface):
+    """A default factory that requires a context.
+
+    The context is the field context. If the field is not bound, context may
+    be ``None``.
+    """
+
+    def __call__(context):
+        """Returns a default value for the field."""
+
+
+class NO_VALUE(object):
+    def __repr__(self):
+        return '<NO_VALUE>'
+
+NO_VALUE = NO_VALUE()