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class BooleanOperationsError(Exception):
"""Base BooleanOperations exception"""
class UnsupportedContourError(BooleanOperationsError):
"""Raised when asked to perform an operation on an unsupported curve type."""
class InvalidContourError(BooleanOperationsError):
"""Raised when any input contour is invalid"""
class InvalidSubjectContourError(InvalidContourError):
"""Raised when a 'subject' contour is not valid"""
class InvalidClippingContourError(InvalidContourError):
"""Raised when a 'clipping' contour is not valid"""
class OpenContourError(BooleanOperationsError):
"""Raised when any input contour is open"""
class ExecutionError(BooleanOperationsError):
"""Raised when clipping execution fails"""
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