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Cython Object API

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This commit is contained in:
Celine Mercier
2017-04-06 14:41:43 +02:00
parent b5b7995411
commit 08be4e231d
2 changed files with 43 additions and 41 deletions
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10
python/obitools3/dms/object.pxd
View File

@ -6,7 +6,7 @@ cdef dict __c_cython_mapping__
cdef class OBIObject:
cdef dict _dependent_object
cdef dict _dependent_objects
cdef register(self, OBIObject object)
cdef unregister(self, OBIObject object)
@ -16,12 +16,12 @@ cdef class OBIObject:
cdef class OBIWrapper(OBIObject):
cdef void* _pointer
cdef size_t cid(self)
cpdef bint active(self)
cdef inline size_t cid(self)
cdef inline bint active(self)
@staticmethod
cdef object new_wrapper(type constructor, void* pointer)
cdef object new(type constructor, void* pointer)
cdef class OBIObjectClosedInstance(Exception):

74
python/obitools3/dms/object.pyx
View File

@ -1,83 +1,85 @@
#cython: language_level=3
__c_cython_mapping__={}
__c_cython_mapping__ = {}
cdef class OBIObject:
def __init__(self, __internalCall__) :
if __internalCall__ != 987654 or \
type(self) == OBIObject or \
type(self) == OBIWrapper or \
not isinstance(self, OBIObject) :
raise RuntimeError('OBIObject constructor can not be called directly')
self._dependent_objects = {}
cdef register(self, OBIObject object):
self._dependent_object[id(object)]=object
self._dependent_objects[id(object)] = object
cdef unregister(self, OBIObject object):
del self._dependent_object[id(object)]
del self._dependent_objects[id(object)]
cpdef close(self):
cdef OBIObject object
cdef list toclose = list(self._dependent_object.values())
cdef list to_close = list((self._dependent_objects).values())
for object in toclose:
for object in to_close:
object.close()
assert len(self._dependent_object.values)==0
def __init__(self, __internalCall__):
if __internalCall__ != 987654 :
raise RuntimeError('OBIObject constructor can not be called directly')
if type(self) == OBIObject or type(self) == OBIWrapper or not isinstance(self, OBIObject) :
raise RuntimeError('OBIObject constructor can not be called directly')
self._dependent_object={}
assert len(self._dependent_objects.values()) == 0
cdef class OBIWrapper(OBIObject):
"""
The OBIWrapper class enables to wrap a C object representing a DMS or an element from a DMS
"""
cdef class OBIWrapper(OBIObject) :
'''
The OBIWrapper class enables to wrap a C object representing a DMS or an element from a DMS.
'''
cdef size_t cid(self) :
cdef inline size_t cid(self) :
return <size_t>(self._pointer)
cdef inline bint active(self) :
return self._pointer != NULL
cpdef close(self):
if (self._pointer != NULL):
OBIObject.close(self)
del __c_cython_mapping__[<size_t>self._pointer]
self._pointer = NULL
assert len(self._dependent_object.values) == 0
cpdef bint active(self):
return self._pointer != NULL
assert len(self._dependent_objects.values()) == 0
def __dealloc__(self):
"""
'''
Destructor of any OBI instance.
The destructor automatically calls the `close` method and
therefore frees all the associated memory.
"""
therefore closes and frees all associated objects and memory.
'''
self.close()
@staticmethod
cdef object new_wrapper(type constructor, void* pointer):
cdef object new(type constructor, void* pointer) :
cdef object o
cdef OBIWrapper o
if (<size_t>pointer in __c_cython_mapping__):
print("Pointer already in cython dict")
return __c_cython_mapping__[<size_t>pointer]
else:
o = constructor(<size_t>pointer, 987654)
o._pointer = <size_t>pointer
o = constructor(987654)
o._pointer = pointer
__c_cython_mapping__[<size_t>pointer] = o
return o