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# Copyright 2008-2009 Nanorex, Inc. See LICENSE file for details.
"""
@author: EricM
@version: $Id$
@copyright: 2008-2009 Nanorex, Inc. See LICENSE file for details.
"""
import types
import Numeric
cdef extern from "Python.h":
int PyType_Check(obj)
int PyCallable_Check(obj)
int PyList_Check(obj)
cdef extern from "samevalshelp.c":
int c_setArrayType(object atype)
int c_setInstanceCopier(object copier)
int c_setGeneralCopier(object copier)
int c_setArrayCopier(object copier)
int c_setInstanceLikeClasses(object classList)
object c_same_vals(object o1, object o2)
object c_copy_val(object obj)
class _old_style_class:
pass
_old_style_instance = _old_style_class()
def same_vals(o1, o2):
res = c_same_vals(o1, o2)
# TODO: we need to fix a bug in c_same_vals exception handling,
# in which it fails to properly handle an exception in its call to
# PyObject_RichCompareBool (for example, a ValueError when it's used
# on objects of type numpy.ndarray). Until that's fixed in the C code
# (not just for ndarray but for any potential exception from that callback),
# we work around that bug in c_same_vals here, by the following KLUGE --
# this getattr will raise that unhandled exception from its own location
# in this file, but will cause no harm (except a slowdown, of unknown
# importance) if there is no unhandled exception.
# TODO: also extend c_same_vals to correctly compare numpy.ndarray,
# like the Python version (in utilities/Comparison.py) now does.
# [bruce 081202]
getattr3(_old_style_instance, 'missingattr', None)
# for doc of getattr3: http://www.cosc.canterbury.ac.nz/greg.ewing/python/Pyrex/version/Doc/Manual/basics.html
return res
def copy_val(obj):
return c_copy_val(obj)
def setArrayType(atype):
if (PyType_Check(atype)):
c_setArrayType(atype)
else:
raise TypeError, "argument must be a type"
def setInstanceCopier(copier):
if (PyCallable_Check(copier)):
c_setInstanceCopier(copier)
else:
raise TypeError, "argument must be callable"
def setGeneralCopier(copier):
if (PyCallable_Check(copier)):
c_setGeneralCopier(copier)
else:
raise TypeError, "argument must be callable"
def setArrayCopier(copier):
if (PyCallable_Check(copier)):
c_setArrayCopier(copier)
else:
raise TypeError, "argument must be callable"
def setInstanceLikeClasses(classList): # deprecated, bruce 090206
if (PyList_Check(classList)):
c_setInstanceLikeClasses(classList)
else:
raise TypeError, "argument must be a list"
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