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// Copyright David Abrahams 2002.

// Distributed under the Boost Software License, Version 1.0. (See

// accompanying file LICENSE_1_0.txt or copy at

// http://www.boost.org/LICENSE_1_0.txt)

#include <boost/python/numeric.hpp>

#include <boost/python/handle.hpp>

#include <boost/python/cast.hpp>

#include <boost/python/tuple.hpp>

#include <boost/python/detail/raw_pyobject.hpp>

#include <boost/python/extract.hpp>

namespace boost { namespace python { namespace numeric {

namespace

{

enum state_t { failed = -1, unknown, succeeded };

state_t state = unknown;

std::string module_name;

std::string type_name;

handle<> array_module;

handle<> array_type;

handle<> array_function;

void throw_load_failure()

{

PyErr_Format(

PyExc_ImportError

, "No module named '%s' or its type '%s' did not follow the NumPy protocol"

, module_name.c_str(), type_name.c_str());

throw_error_already_set();

}

bool load(bool throw_on_error)

{

if (!state)

{

if (module_name.size() == 0)

{

module_name = "numarray";

type_name = "NDArray";

if (load(false))

return true;

module_name = "Numeric";

type_name = "ArrayType";

}

state = failed;

PyObject* module = ::PyImport_Import(object(module_name).ptr());

if (module)

{

PyObject* type = ::PyObject_GetAttrString(module, const_cast<char*>(type_name.c_str()));

if (type && PyType_Check(type))

{

array_type = handle<>(type);

PyObject* function = ::PyObject_GetAttrString(module, const_cast<char*>("array"));

if (function && PyCallable_Check(function))

{

array_function = handle<>(function);

state = succeeded;

}

if (state == succeeded)

return true;

if (throw_on_error)

throw_load_failure();

PyErr_Clear();

return false;

}

object demand_array_function()

{

load(true);

return object(array_function);

}

void array::set_module_and_type(char const* package_name, char const* type_attribute_name)

{

state = unknown;

module_name = package_name ? package_name : "" ;

type_name = type_attribute_name ? type_attribute_name : "" ;

}

std::string array::get_module_name()

{

load(false);

return module_name;

}

namespace aux

{

bool array_object_manager_traits::check(PyObject* obj)

{

if (!load(false))

return false;

return ::PyObject_IsInstance(obj, array_type.get());

}

python::detail::new_non_null_reference

array_object_manager_traits::adopt(PyObject* obj)

{

load(true);

return detail::new_non_null_reference(

pytype_check(downcast<PyTypeObject>(array_type.get()), obj));

}

PyTypeObject const* array_object_manager_traits::get_pytype()

{

load(false);

if(!array_type) return 0;

return downcast<PyTypeObject>(array_type.get());

}

# define BOOST_PYTHON_AS_OBJECT(z, n, _) object(x##n)

# define BOOST_PP_LOCAL_MACRO(n) \

array_base::array_base(BOOST_PP_ENUM_PARAMS(n, object const& x)) \

: object(demand_array_function()(BOOST_PP_ENUM_PARAMS(n, x))) \

{}

# define BOOST_PP_LOCAL_LIMITS (1, 6)

# include BOOST_PP_LOCAL_ITERATE()

# undef BOOST_PYTHON_AS_OBJECT

array_base::array_base(BOOST_PP_ENUM_PARAMS(7, object const& x))

: object(demand_array_function()(BOOST_PP_ENUM_PARAMS(7, x)))

{}

object array_base::argmax(long axis)

{

return attr("argmax")(axis);

}

object array_base::argmin(long axis)

{

return attr("argmin")(axis);

}

object array_base::argsort(long axis)

{

return attr("argsort")(axis);

}

object array_base::astype(object const& type)

{

return attr("astype")(type);

}

void array_base::byteswap()

{

attr("byteswap")();

}

object array_base::copy() const

{

return attr("copy")();

}

object array_base::diagonal(long offset, long axis1, long axis2) const

{

return attr("diagonal")(offset, axis1, axis2);

}

void array_base::info() const

{

attr("info")();

}

bool array_base::is_c_array() const

{

return extract<bool>(attr("is_c_array")());

}

bool array_base::isbyteswapped() const

{

return extract<bool>(attr("isbyteswapped")());

}

array array_base::new_(object type) const

{

return extract<array>(attr("new")(type))();

}

void array_base::sort()

{

attr("sort")();

}

object array_base::trace(long offset, long axis1, long axis2) const

{

return attr("trace")(offset, axis1, axis2);

}

object array_base::type() const

{

return attr("type")();

}

char array_base::typecode() const

{

return extract<char>(attr("typecode")());

}

object array_base::factory(

object const& sequence

, object const& typecode

, bool copy

, bool savespace

, object type

, object shape

)

{

return attr("factory")(sequence, typecode, copy, savespace, type, shape);

}

object array_base::getflat() const

{

return attr("getflat")();

}

long array_base::getrank() const

{

return extract<long>(attr("getrank")());

}

object array_base::getshape() const

{

return attr("getshape")();

}

bool array_base::isaligned() const

{

return extract<bool>(attr("isaligned")());

}

bool array_base::iscontiguous() const

{

return extract<bool>(attr("iscontiguous")());

}

long array_base::itemsize() const

{

return extract<long>(attr("itemsize")());

}

long array_base::nelements() const

{

return extract<long>(attr("nelements")());

}

object array_base::nonzero() const

{

return attr("nonzero")();

}

void array_base::put(object const& indices, object const& values)

{

attr("put")(indices, values);

}

void array_base::ravel()

{

attr("ravel")();

}

object array_base::repeat(object const& repeats, long axis)

{

return attr("repeat")(repeats, axis);

}

void array_base::resize(object const& shape)

{

attr("resize")(shape);

}

void array_base::setflat(object const& flat)

{

attr("setflat")(flat);

}

void array_base::setshape(object const& shape)

{

attr("setshape")(shape);

}

void array_base::swapaxes(long axis1, long axis2)

{

attr("swapaxes")(axis1, axis2);

}

object array_base::take(object const& sequence, long axis) const

{

return attr("take")(sequence, axis);

}

void array_base::tofile(object const& file) const

{

attr("tofile")(file);

}

str array_base::tostring() const

{

return str(attr("tostring")());

}

void array_base::transpose(object const& axes)

{

attr("transpose")(axes);

}

object array_base::view() const

{

return attr("view")();

}

}}} // namespace boost::python::numeric

python/src/numeric.cpp at develop · vslashg/python · GitHub

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