90 lines
2.2 KiB
Cython
90 lines
2.2 KiB
Cython
#cython: language_level=3
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__c_cython_mapping__ = {}
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cdef class OBIObject:
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def __init__(self, __internalCall__) :
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if __internalCall__ != 987654 or \
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type(self) == OBIObject or \
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type(self) == OBIWrapper or \
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not isinstance(self, OBIObject) :
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raise RuntimeError('OBIObject constructor can not be called directly')
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self._dependent_objects = {}
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cdef register(self, OBIObject object):
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self._dependent_objects[id(object)] = object
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cdef unregister(self, OBIObject object):
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del self._dependent_objects[id(object)]
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cpdef close(self):
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cdef OBIObject object
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cdef list to_close = list((self._dependent_objects).values())
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for object in to_close:
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object.close()
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assert len(self._dependent_objects.values()) == 0
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cdef class OBIWrapper(OBIObject) :
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'''
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The OBIWrapper class enables to wrap a C object representing a DMS or an element from a DMS.
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'''
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cdef inline size_t cid(self) :
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return <size_t>(self._pointer)
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cdef inline bint active(self) :
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return self._pointer != NULL
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cpdef close(self):
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if (self._pointer != NULL):
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OBIObject.close(self)
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del __c_cython_mapping__[<size_t>self._pointer]
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self._pointer = NULL
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assert len(self._dependent_objects.values()) == 0
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def __dealloc__(self):
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'''
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Destructor of any OBI instance.
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The destructor automatically calls the `close` method and
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therefore closes and frees all associated objects and memory.
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'''
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self.close()
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@staticmethod
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cdef object new(type constructor, void* pointer) :
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cdef OBIWrapper o
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if (<size_t>pointer in __c_cython_mapping__):
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#print("Pointer already in cython dict")
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return __c_cython_mapping__[<size_t>pointer]
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else:
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o = constructor(987654)
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o._pointer = pointer
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__c_cython_mapping__[<size_t>pointer] = o
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return o
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cdef class OBIDeactivatedInstanceError(Exception):
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pass
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