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Made predicate and function types callable in the sense that

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callable(I, T) returns True when I is an object of a type T or
of a subtype of T.  Also implemented a measure to avoid an
infinite loop when user-defined predicate and function classes
do not properly overload the __call__ method (including the
cases of directly instantiating the base classes such as
UnaryPredicate0D and BinaryPredicate1D).
This commit is contained in:
Tamito Kajiyama
2009-07-26 16:15:28 +00:00
parent 78ce17fce8
commit 730fb1021c
22 changed files with 243 additions and 88 deletions
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15
source/blender/freestyle/intern/python/BPy_BinaryPredicate0D.cpp
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@@ -15,12 +15,11 @@ static void BinaryPredicate0D___dealloc__(BPy_BinaryPredicate0D *self);
static PyObject * BinaryPredicate0D___repr__(BPy_BinaryPredicate0D *self);
static PyObject * BinaryPredicate0D_getName( BPy_BinaryPredicate0D *self, PyObject *args);
static PyObject * BinaryPredicate0D___call__( BPy_BinaryPredicate0D *self, PyObject *args);
static PyObject * BinaryPredicate0D___call__( BPy_BinaryPredicate0D *self, PyObject *args, PyObject *kwds);
/*----------------------BinaryPredicate0D instance definitions ----------------------------*/
static PyMethodDef BPy_BinaryPredicate0D_methods[] = {
{"getName", ( PyCFunction ) BinaryPredicate0D_getName, METH_NOARGS, "（ ）Returns the string of the name of the binary predicate."},
{"__call__", ( PyCFunction ) BinaryPredicate0D___call__, METH_VARARGS, "BinaryPredicate0D（Interface0D, Interface0D ）. Must be overloaded by inherited classes. It evaluates a relation between two Interface0D." },
{NULL, NULL, 0, NULL}
};
@@ -50,7 +49,7 @@ PyTypeObject BinaryPredicate0D_Type = {
/* More standard operations (here for binary compatibility) */
NULL, /* hashfunc tp_hash; */
NULL, /* ternaryfunc tp_call; */
(ternaryfunc)BinaryPredicate0D___call__, /* ternaryfunc tp_call; */
NULL, /* reprfunc tp_str; */
NULL, /* getattrofunc tp_getattro; */
NULL, /* setattrofunc tp_setattro; */
@@ -150,13 +149,21 @@ PyObject * BinaryPredicate0D_getName( BPy_BinaryPredicate0D *self, PyObject *arg
return PyString_FromString( self->bp0D->getName().c_str() );
}
PyObject * BinaryPredicate0D___call__( BPy_BinaryPredicate0D *self, PyObject *args)
PyObject * BinaryPredicate0D___call__( BPy_BinaryPredicate0D *self, PyObject *args, PyObject *kwds)
{
BPy_Interface0D *obj1, *obj2;
if( kwds != NULL ) {
PyErr_SetString(PyExc_TypeError, "keyword argument(s) not supported");
return NULL;
}
if( !PyArg_ParseTuple(args, "O!O!", &Interface0D_Type, &obj1, &Interface0D_Type, &obj2) )
return NULL;
if( typeid(*(self->bp0D)) == typeid(BinaryPredicate0D) ) {
PyErr_SetString(PyExc_TypeError, "__call__ method must be overloaded");
return NULL;
}
if (self->bp0D->operator()( *(obj1->if0D) , *(obj2->if0D) ) < 0) {
if (!PyErr_Occurred()) {
string msg(self->bp0D->getName() + " __call__ method failed");