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[SVN r9622]
This commit is contained in:
nobody
2001-03-21 02:33:28 +00:00
parent 61978881ba
commit 34bc55e21a
13 changed files with 629 additions and 0 deletions

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/*
This example shows how to convert a class from and to native
Python objects, such as tuples.
We do not want to expose the helper class MillerIndex as an
Extension Class. However, in order to simplify the wrapper code,
we want to define from_python() and to_python() functions for
class MillerIndex.
Consider the alternatives:
- Expose MillerIndex as an Extension Class.
We need a constructor MillerIndex(python::tuple).
Python function calls become more complex:
foo(MillerIndex((1,2,3)) instead of foo((1,2,3))
We need a method such as MillerIndex().as_tuple().
- Define a wrapper function for each function that we
want to expose, e.g.:
void add(const IndexingSet& ixset, const python::tuple PyMIx)
The first alternative introduces a new type that the user has to
deal with. Other modules using Miller indices might organize them in
different ways, for example to increase runtime efficiency for
important procedures. This means, the user has to know how to
convert between the different kinds of Miller index representations.
This can quickly become a nuisance. Relying on native Python data
structures minimizes the number of special types the user has to
learn and convert. Of course, this argument is only valid for
small and relatively simply classes.
If there are many member functions with MillerIndex arguments, the
second alternative is impractical, and concentrating the conversion
mechanism in one central place is essential for code
maintainability. An added benefit is that more convenient (smarter)
conversion functions can be provided without cluttering the rest of
the wrapper code.
*/
#include <string>
#include <vector>
#include <boost/python/class_builder.hpp>
namespace python = boost::python;
namespace { // Avoid cluttering the global namespace.
// The helper class.
//
class MillerIndex {
public:
int v[3];
};
// The main class. Imagine that there are MANY member functions
// like add() and get().
//
class IndexingSet {
private:
std::vector<MillerIndex> VMIx;
public:
void add(const MillerIndex& MIx) { VMIx.push_back(MIx); }
MillerIndex get(std::size_t i) const { return VMIx[i]; }
};
}
BOOST_PYTHON_BEGIN_CONVERSION_NAMESPACE
// Convert a Python tuple to a MillerIndex object.
//
MillerIndex from_python(PyObject* p, python::type<const MillerIndex&>)
{
python::tuple tup
= python::tuple(python::ref(p, python::ref::increment_count));
if (tup.size() != 3) {
PyErr_SetString(PyExc_ValueError,
"expecting exactly 3 values in tuple.");
throw python::error_already_set();
}
MillerIndex result;
for (int i = 0; i < 3; i++)
result.v[i] = from_python(tup[i].get(), python::type<int>());
return result;
}
// Similar conversion for MillerIndex objects passed by value.
// Not actually used, but included to show the principle.
//
MillerIndex from_python(PyObject* p, python::type<MillerIndex>)
{
return from_python(p, python::type<const MillerIndex&>());
}
// Convert a MillerIndex object to a Python tuple.
//
PyObject* to_python(const MillerIndex& hkl)
{
python::tuple result(3);
for (int i = 0; i < 3; i++)
result.set_item(i, python::ref(to_python(hkl.v[i])));
return result.reference().release();
}
BOOST_PYTHON_END_CONVERSION_NAMESPACE
BOOST_PYTHON_MODULE_INIT(do_it_yourself_converters)
{
try
{
// Create an object representing this extension module.
python::module_builder this_module("do_it_yourself_converters");
// Create the Python type object for our extension class.
python::class_builder<IndexingSet> ixset_class(this_module, "IndexingSet");
// Add the __init__ function.
ixset_class.def(python::constructor<>());
// Add the member functions.
ixset_class.def(&IndexingSet::add, "add");
ixset_class.def(&IndexingSet::get, "get");
}
catch(...)
{
python::handle_exception(); // Deal with the exception for Python
}
}

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// basics first: const reference converters
boost::python::tuple const_dvect_reference_as_tuple(const vects::dvect& dv)
{
return dv.as_tuple();
}
// to_python smart pointer conversions
std::auto_ptr<vects::dvect> dvect_as_auto_ptr(const vects::dvect& dv)
{
return std::auto_ptr<vects::dvect>(new vects::dvect(dv));
}
boost::shared_ptr<vects::dvect> dvect_as_shared_ptr(const vects::dvect& dv)
{
return boost::shared_ptr<vects::dvect>(new vects::dvect(dv));
}
// smart pointers passed by value
boost::python::ref auto_ptr_value_dvect_as_tuple(std::auto_ptr<vects::dvect> dv)
{
if (dv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return dv->as_tuple().reference();
}
boost::python::ref shared_ptr_value_dvect_as_tuple(boost::shared_ptr<vects::dvect> dv)
{
if (dv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return dv->as_tuple().reference();
}
// smart pointers passed by reference
boost::python::ref auto_ptr_reference_dvect_as_tuple(std::auto_ptr<vects::dvect>& dv)
{
if (dv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return dv->as_tuple().reference();
}
boost::python::ref shared_ptr_reference_dvect_as_tuple(boost::shared_ptr<vects::dvect>& dv)
{
if (dv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return dv->as_tuple().reference();
}
// smart pointers passed by const reference
boost::python::ref auto_ptr_const_reference_dvect_as_tuple(const std::auto_ptr<vects::dvect>& dv)
{
if (dv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return dv->as_tuple().reference();
}
boost::python::ref shared_ptr_const_reference_dvect_as_tuple(const boost::shared_ptr<vects::dvect>& dv)
{
if (dv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return dv->as_tuple().reference();
}

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example/dvect_defs.cpp Normal file
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this_module.def(dvect_as_auto_ptr, "dvect_as_auto_ptr");
this_module.def(dvect_as_shared_ptr, "dvect_as_shared_ptr");
this_module.def(const_dvect_reference_as_tuple, "const_dvect_reference_as_tuple");
this_module.def(auto_ptr_value_dvect_as_tuple, "auto_ptr_value_dvect_as_tuple");
this_module.def(shared_ptr_value_dvect_as_tuple, "shared_ptr_value_dvect_as_tuple");
this_module.def(auto_ptr_reference_dvect_as_tuple, "auto_ptr_reference_dvect_as_tuple");
this_module.def(shared_ptr_reference_dvect_as_tuple, "shared_ptr_reference_dvect_as_tuple");
this_module.def(auto_ptr_const_reference_dvect_as_tuple, "auto_ptr_const_reference_dvect_as_tuple");
this_module.def(shared_ptr_const_reference_dvect_as_tuple, "shared_ptr_const_reference_dvect_as_tuple");

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// basics first: const reference converters
boost::python::tuple const_ivect_reference_as_tuple(const vects::ivect& iv)
{
return iv.as_tuple();
}
// to_python smart pointer conversions
std::auto_ptr<vects::ivect> ivect_as_auto_ptr(const vects::ivect& iv)
{
return std::auto_ptr<vects::ivect>(new vects::ivect(iv));
}
boost::shared_ptr<vects::ivect> ivect_as_shared_ptr(const vects::ivect& iv)
{
return boost::shared_ptr<vects::ivect>(new vects::ivect(iv));
}
// smart pointers passed by value
boost::python::ref auto_ptr_value_ivect_as_tuple(std::auto_ptr<vects::ivect> iv)
{
if (iv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return iv->as_tuple().reference();
}
boost::python::ref shared_ptr_value_ivect_as_tuple(boost::shared_ptr<vects::ivect> iv)
{
if (iv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return iv->as_tuple().reference();
}
// smart pointers passed by reference
boost::python::ref auto_ptr_reference_ivect_as_tuple(std::auto_ptr<vects::ivect>& iv)
{
if (iv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return iv->as_tuple().reference();
}
boost::python::ref shared_ptr_reference_ivect_as_tuple(boost::shared_ptr<vects::ivect>& iv)
{
if (iv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return iv->as_tuple().reference();
}
// smart pointers passed by const reference
boost::python::ref auto_ptr_const_reference_ivect_as_tuple(const std::auto_ptr<vects::ivect>& iv)
{
if (iv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return iv->as_tuple().reference();
}
boost::python::ref shared_ptr_const_reference_ivect_as_tuple(const boost::shared_ptr<vects::ivect>& iv)
{
if (iv.get() == 0) return boost::python::ref(Py_None, boost::python::ref::increment_count);
return iv->as_tuple().reference();
}

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example/ivect_defs.cpp Normal file
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this_module.def(ivect_as_auto_ptr, "ivect_as_auto_ptr");
this_module.def(ivect_as_shared_ptr, "ivect_as_shared_ptr");
this_module.def(const_ivect_reference_as_tuple, "const_ivect_reference_as_tuple");
this_module.def(auto_ptr_value_ivect_as_tuple, "auto_ptr_value_ivect_as_tuple");
this_module.def(shared_ptr_value_ivect_as_tuple, "shared_ptr_value_ivect_as_tuple");
this_module.def(auto_ptr_reference_ivect_as_tuple, "auto_ptr_reference_ivect_as_tuple");
this_module.def(shared_ptr_reference_ivect_as_tuple, "shared_ptr_reference_ivect_as_tuple");
this_module.def(auto_ptr_const_reference_ivect_as_tuple, "auto_ptr_const_reference_ivect_as_tuple");
this_module.def(shared_ptr_const_reference_ivect_as_tuple, "shared_ptr_const_reference_ivect_as_tuple");

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example/simple_vector.cpp Normal file
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#include <boost/python/class_builder.hpp>
namespace python = boost::python;
namespace { // Avoid cluttering the global namespace.
// A wrapper is used to define additional constructors.
//
struct vector_double_wrapper: std::vector<double>
{
// Tell the compiler how to convert a base class object to
// this wrapper object.
vector_double_wrapper(PyObject*, const std::vector<double>& vd)
: std::vector<double>(vd) {}
vector_double_wrapper(PyObject* self)
: std::vector<double>() {}
vector_double_wrapper(PyObject* self, int n)
: std::vector<double>(n) {}
vector_double_wrapper(PyObject* self, python::tuple tuple)
: std::vector<double>(tuple.size())
{
std::vector<double>::iterator vd = begin();
for (int i = 0; i < tuple.size(); i++)
vd[i] = BOOST_PYTHON_CONVERSION::from_python(tuple[i].get(),
python::type<double>());
}
};
double getitem(const std::vector<double>& vd, std::size_t key) {
return vd[key];
}
void setitem(std::vector<double>& vd, std::size_t key, double d) {
std::vector<double>::iterator vditer = vd.begin();
vditer[key] = d;
}
void delitem(std::vector<double>& vd, std::size_t key) {
std::vector<double>::iterator vditer = vd.begin();
vd.erase(&vditer[key]);
}
// Convert vector_double to a regular Python tuple.
//
python::tuple as_tuple(const std::vector<double>& vd)
{
python::tuple t(vd.size());
for (int i = 0; i < vd.size(); i++) t.set_item(i,
python::ref(BOOST_PYTHON_CONVERSION::to_python(vd[i])));
return t;
}
// Function returning a vector_double object to Python.
//
std::vector<double> foo(int n)
{
std::vector<double> vd(n);
std::vector<double>::iterator vditer = vd.begin();
for (int i = 0; i < n; i++) vditer[i] = double(i);
return vd;
}
// Same as foo(), but avoid copying on return.
//
std::auto_ptr<std::vector<double> > bar(int n)
{
std::auto_ptr<std::vector<double> > vdptr(new std::vector<double>(n));
std::vector<double>::iterator vditer = vdptr->begin();
for (int i = 0; i < n; i++) vditer[i] = double(10 * i);
return vdptr;
}
}
BOOST_PYTHON_MODULE_INIT(simple_vector)
{
try
{
python::module_builder this_module("simple_vector");
python::class_builder<std::vector<double>, vector_double_wrapper>
vector_double(this_module, "vector_double");
vector_double.def(python::constructor<>());
vector_double.def(python::constructor<const int>());
vector_double.def(python::constructor<python::tuple>());
vector_double.def(&std::vector<double>::size, "__len__");
vector_double.def(getitem, "__getitem__");
vector_double.def(setitem, "__setitem__");
vector_double.def(delitem, "__delitem__");
vector_double.def(as_tuple, "as_tuple");
this_module.def(foo, "foo");
this_module.def(bar, "bar");
}
catch(...)
{
python::handle_exception(); // Deal with the exception for Python
}
}

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example/swap_iv_dv.sh Normal file
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sed 's/iv/xv/g' $1 | sed 's/dv/iv/g' | sed 's/xv/dv/g'

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r'''>>> import do_it_yourself_converters
>>> ixset = do_it_yourself_converters.IndexingSet()
>>> ixset.add((1,2,3))
>>> ixset.add((4,5,6))
>>> ixset.add((7,8,9))
>>> print ixset.get(0)
(1, 2, 3)
>>> print ixset.get(1)
(4, 5, 6)
>>> print ixset.get(2)
(7, 8, 9)
'''
def run(args = None):
if args is not None:
import sys
sys.argv = args
import doctest, test_do_it_yourself_converters
doctest.testmod(test_do_it_yourself_converters)
if __name__ == '__main__':
run()

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r'''>>> import simple_vector
>>> v=simple_vector.vector_double()
>>> print v.as_tuple()
()
>>> v=simple_vector.vector_double(5)
>>> print v.as_tuple()
(0.0, 0.0, 0.0, 0.0, 0.0)
>>> print len(v)
5
>>> v=simple_vector.vector_double((3,4,5))
>>> print v.as_tuple()
(3.0, 4.0, 5.0)
>>> print v[1]
4.0
>>> v[1] = 40
>>> print v.as_tuple()
(3.0, 40.0, 5.0)
>>> del v[1]
>>> print v.as_tuple()
(3.0, 5.0)
>>> print simple_vector.foo(11).as_tuple()
(0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0)
>>> print simple_vector.bar(12).as_tuple()
(0.0, 10.0, 20.0, 30.0, 40.0, 50.0, 60.0, 70.0, 80.0, 90.0, 100.0, 110.0)
'''
def run(args = None):
if args is not None:
import sys
sys.argv = args
import doctest, test_simple_vector
doctest.testmod(test_simple_vector)
if __name__ == '__main__':
run()

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example/tst_dvect1.py Normal file
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def f():
import dvect
print dvect.dvect.__converters__
dv = dvect.dvect((1,2,3,4,5))
print dv
print dv.as_tuple()
iv = dv.as_ivect()
print iv
print iv.as_tuple()
print dvect.const_ivect_reference_as_tuple(iv)
aiv = dvect.ivect_as_auto_ptr(iv)
print dvect.const_ivect_reference_as_tuple(aiv)
siv = dvect.ivect_as_shared_ptr(iv)
print dvect.const_ivect_reference_as_tuple(siv)
print aiv.as_tuple()
print siv.as_tuple()
if (__name__ == "__main__"):
import sys, string
n = 1
if (len(sys.argv) > 1): n = string.atoi(sys.argv[1])
for i in xrange(n):
f()

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example/tst_dvect2.py Normal file
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def f():
import dvect
import ivect
#
dv = dvect.dvect((1,2,3,4,5))
iv = dv.as_ivect()
#
aiv = dvect.ivect_as_auto_ptr(iv)
print '1. auto_ptr_value_ivect_as_tuple'
print ivect.auto_ptr_value_ivect_as_tuple(aiv)
print '2. auto_ptr_value_ivect_as_tuple'
print ivect.auto_ptr_value_ivect_as_tuple(aiv)
#
adv = dvect.dvect_as_auto_ptr(dv)
print '1. auto_ptr_value_dvect_as_tuple'
print ivect.auto_ptr_value_dvect_as_tuple(adv)
print '2. auto_ptr_value_dvect_as_tuple'
print ivect.auto_ptr_value_dvect_as_tuple(adv)
#
siv = dvect.ivect_as_shared_ptr(iv)
print '1. shared_ptr_value_ivect_as_tuple'
print ivect.shared_ptr_value_ivect_as_tuple(siv)
print '2. shared_ptr_value_ivect_as_tuple'
print ivect.shared_ptr_value_ivect_as_tuple(siv)
#
sdv = dvect.dvect_as_shared_ptr(dv)
print '1. shared_ptr_value_dvect_as_tuple'
print ivect.shared_ptr_value_dvect_as_tuple(sdv)
print '2. shared_ptr_value_dvect_as_tuple'
print ivect.shared_ptr_value_dvect_as_tuple(sdv)
#
aiv = dvect.ivect_as_auto_ptr(iv)
print '1. auto_ptr_reference_ivect_as_tuple'
print ivect.auto_ptr_reference_ivect_as_tuple(aiv)
print '2. auto_ptr_reference_ivect_as_tuple'
print ivect.auto_ptr_reference_ivect_as_tuple(aiv)
#
adv = dvect.dvect_as_auto_ptr(dv)
print '1. auto_ptr_reference_dvect_as_tuple'
print ivect.auto_ptr_reference_dvect_as_tuple(adv)
print '2. auto_ptr_reference_dvect_as_tuple'
print ivect.auto_ptr_reference_dvect_as_tuple(adv)
#
siv = dvect.ivect_as_shared_ptr(iv)
print '1. shared_ptr_reference_ivect_as_tuple'
print ivect.shared_ptr_reference_ivect_as_tuple(siv)
print '2. shared_ptr_reference_ivect_as_tuple'
print ivect.shared_ptr_reference_ivect_as_tuple(siv)
#
sdv = dvect.dvect_as_shared_ptr(dv)
print '1. shared_ptr_reference_dvect_as_tuple'
print ivect.shared_ptr_reference_dvect_as_tuple(sdv)
print '2. shared_ptr_reference_dvect_as_tuple'
print ivect.shared_ptr_reference_dvect_as_tuple(sdv)
#
aiv = dvect.ivect_as_auto_ptr(iv)
print '1. auto_ptr_const_reference_ivect_as_tuple'
print ivect.auto_ptr_const_reference_ivect_as_tuple(aiv)
print '2. auto_ptr_const_reference_ivect_as_tuple'
print ivect.auto_ptr_const_reference_ivect_as_tuple(aiv)
#
adv = dvect.dvect_as_auto_ptr(dv)
print '1. auto_ptr_const_reference_dvect_as_tuple'
print ivect.auto_ptr_const_reference_dvect_as_tuple(adv)
print '2. auto_ptr_const_reference_dvect_as_tuple'
print ivect.auto_ptr_const_reference_dvect_as_tuple(adv)
#
siv = dvect.ivect_as_shared_ptr(iv)
print '1. shared_ptr_const_reference_ivect_as_tuple'
print ivect.shared_ptr_const_reference_ivect_as_tuple(siv)
print '2. shared_ptr_const_reference_ivect_as_tuple'
print ivect.shared_ptr_const_reference_ivect_as_tuple(siv)
#
sdv = dvect.dvect_as_shared_ptr(dv)
print '1. shared_ptr_const_reference_dvect_as_tuple'
print ivect.shared_ptr_const_reference_dvect_as_tuple(sdv)
print '2. shared_ptr_const_reference_dvect_as_tuple'
print ivect.shared_ptr_const_reference_dvect_as_tuple(sdv)
if (__name__ == "__main__"):
import sys, string
n = 1
if (len(sys.argv) > 1): n = string.atoi(sys.argv[1])
for i in xrange(n):
f()

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example/tst_ivect1.py Normal file
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def f():
import ivect
print ivect.ivect.__converters__
iv = ivect.ivect((1,2,3,4,5))
print iv
print iv.as_tuple()
dv = iv.as_dvect()
print dv
print dv.as_tuple()
print ivect.const_dvect_reference_as_tuple(dv)
adv = ivect.dvect_as_auto_ptr(dv)
print ivect.const_dvect_reference_as_tuple(adv)
sdv = ivect.dvect_as_shared_ptr(dv)
print ivect.const_dvect_reference_as_tuple(sdv)
print adv.as_tuple()
print sdv.as_tuple()
if (__name__ == "__main__"):
import sys, string
n = 1
if (len(sys.argv) > 1): n = string.atoi(sys.argv[1])
for i in xrange(n):
f()

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example/tst_ivect2.py Normal file
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def f():
import ivect
import dvect
#
iv = ivect.ivect((1,2,3,4,5))
dv = iv.as_dvect()
#
adv = ivect.dvect_as_auto_ptr(dv)
print '1. auto_ptr_value_dvect_as_tuple'
print dvect.auto_ptr_value_dvect_as_tuple(adv)
print '2. auto_ptr_value_dvect_as_tuple'
print dvect.auto_ptr_value_dvect_as_tuple(adv)
#
aiv = ivect.ivect_as_auto_ptr(iv)
print '1. auto_ptr_value_ivect_as_tuple'
print dvect.auto_ptr_value_ivect_as_tuple(aiv)
print '2. auto_ptr_value_ivect_as_tuple'
print dvect.auto_ptr_value_ivect_as_tuple(aiv)
#
sdv = ivect.dvect_as_shared_ptr(dv)
print '1. shared_ptr_value_dvect_as_tuple'
print dvect.shared_ptr_value_dvect_as_tuple(sdv)
print '2. shared_ptr_value_dvect_as_tuple'
print dvect.shared_ptr_value_dvect_as_tuple(sdv)
#
siv = ivect.ivect_as_shared_ptr(iv)
print '1. shared_ptr_value_ivect_as_tuple'
print dvect.shared_ptr_value_ivect_as_tuple(siv)
print '2. shared_ptr_value_ivect_as_tuple'
print dvect.shared_ptr_value_ivect_as_tuple(siv)
#
adv = ivect.dvect_as_auto_ptr(dv)
print '1. auto_ptr_reference_dvect_as_tuple'
print dvect.auto_ptr_reference_dvect_as_tuple(adv)
print '2. auto_ptr_reference_dvect_as_tuple'
print dvect.auto_ptr_reference_dvect_as_tuple(adv)
#
aiv = ivect.ivect_as_auto_ptr(iv)
print '1. auto_ptr_reference_ivect_as_tuple'
print dvect.auto_ptr_reference_ivect_as_tuple(aiv)
print '2. auto_ptr_reference_ivect_as_tuple'
print dvect.auto_ptr_reference_ivect_as_tuple(aiv)
#
sdv = ivect.dvect_as_shared_ptr(dv)
print '1. shared_ptr_reference_dvect_as_tuple'
print dvect.shared_ptr_reference_dvect_as_tuple(sdv)
print '2. shared_ptr_reference_dvect_as_tuple'
print dvect.shared_ptr_reference_dvect_as_tuple(sdv)
#
siv = ivect.ivect_as_shared_ptr(iv)
print '1. shared_ptr_reference_ivect_as_tuple'
print dvect.shared_ptr_reference_ivect_as_tuple(siv)
print '2. shared_ptr_reference_ivect_as_tuple'
print dvect.shared_ptr_reference_ivect_as_tuple(siv)
#
adv = ivect.dvect_as_auto_ptr(dv)
print '1. auto_ptr_const_reference_dvect_as_tuple'
print dvect.auto_ptr_const_reference_dvect_as_tuple(adv)
print '2. auto_ptr_const_reference_dvect_as_tuple'
print dvect.auto_ptr_const_reference_dvect_as_tuple(adv)
#
aiv = ivect.ivect_as_auto_ptr(iv)
print '1. auto_ptr_const_reference_ivect_as_tuple'
print dvect.auto_ptr_const_reference_ivect_as_tuple(aiv)
print '2. auto_ptr_const_reference_ivect_as_tuple'
print dvect.auto_ptr_const_reference_ivect_as_tuple(aiv)
#
sdv = ivect.dvect_as_shared_ptr(dv)
print '1. shared_ptr_const_reference_dvect_as_tuple'
print dvect.shared_ptr_const_reference_dvect_as_tuple(sdv)
print '2. shared_ptr_const_reference_dvect_as_tuple'
print dvect.shared_ptr_const_reference_dvect_as_tuple(sdv)
#
siv = ivect.ivect_as_shared_ptr(iv)
print '1. shared_ptr_const_reference_ivect_as_tuple'
print dvect.shared_ptr_const_reference_ivect_as_tuple(siv)
print '2. shared_ptr_const_reference_ivect_as_tuple'
print dvect.shared_ptr_const_reference_ivect_as_tuple(siv)
if (__name__ == "__main__"):
import sys, string
n = 1
if (len(sys.argv) > 1): n = string.atoi(sys.argv[1])
for i in xrange(n):
f()