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Copy pathVector.h
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75 lines (62 loc) · 1.95 KB
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// -*- c++ -*-
/*
* Copyright (c) 2010-2012, Jim Bosch
* All rights reserved.
*
* ndarray is distributed under a simple BSD-like license;
* see the LICENSE file that should be present in the root
* of the source distribution, or alternately available at:
* https://github.com/ndarray/ndarray
*/
#ifndef NDARRAY_BP_Vector_h_INCLUDED
#define NDARRAY_BP_Vector_h_INCLUDED
#include "boost/python.hpp"
#include "ndarray/Vector.h"
#include "ndarray/bp_fwd.h"
namespace ndarray {
template <typename T, int N>
class ToBoostPython< Vector<T,N> > {
public:
typedef boost::python::tuple result_type;
static boost::python::tuple apply(Vector<T,N> const & x) {
boost::python::handle<> t(PyTuple_New(N));
for (int n=0; n<N; ++n) {
boost::python::object item(x[n]);
Py_INCREF(item.ptr());
PyTuple_SET_ITEM(t.get(), n, item.ptr());
}
return boost::python::tuple(t);
}
};
template <typename T, int N>
class FromBoostPython< Vector<T,N> > {
public:
explicit FromBoostPython(boost::python::object const & input_) : input(input_) {}
bool convertible() {
try {
boost::python::tuple t(input);
if (len(t) != N) return false;
input = t;
} catch (boost::python::error_already_set) {
boost::python::handle_exception();
PyErr_Clear();
return false;
}
return true;
}
Vector<T,N> operator()() {
boost::python::tuple t = boost::python::extract<boost::python::tuple>(input);
if (len(t) != N) {
PyErr_SetString(PyExc_ValueError, "Incorrect size for ndarray::Vector.");
boost::python::throw_error_already_set();
}
Vector<T,N> r;
for (int n=0; n<N; ++n) {
r[n] = boost::python::extract<T>(t[n]);
}
return r;
}
boost::python::object input;
};
} // namespace ndarray
#endif // !NDARRAY_BP_Vector_h_INCLUDED