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|
/*-----------------------------------------------------------------------------
| Copyright (c) 2013-2017, Nucleic Development Team.
|
| Distributed under the terms of the Modified BSD License.
|
| The full license is in the file COPYING.txt, distributed with this software.
|----------------------------------------------------------------------------*/
#include <sstream>
#include <Python.h>
#include "pythonhelpers.h"
#include "symbolics.h"
#include "types.h"
#include "util.h"
using namespace PythonHelpers;
static PyObject*
Term_new( PyTypeObject* type, PyObject* args, PyObject* kwargs )
{
static const char *kwlist[] = { "variable", "coefficient", 0 };
PyObject* pyvar;
PyObject* pycoeff = 0;
if( !PyArg_ParseTupleAndKeywords(
args, kwargs, "O|O:__new__", const_cast<char**>( kwlist ),
&pyvar, &pycoeff ) )
return 0;
if( !Variable::TypeCheck( pyvar ) )
return py_expected_type_fail( pyvar, "Variable" );
double coefficient = 1.0;
if( pycoeff && !convert_to_double( pycoeff, coefficient ) )
return 0;
PyObject* pyterm = PyType_GenericNew( type, args, kwargs );
if( !pyterm )
return 0;
Term* self = reinterpret_cast<Term*>( pyterm );
self->variable = newref( pyvar );
self->coefficient = coefficient;
return pyterm;
}
static void
Term_clear( Term* self )
{
Py_CLEAR( self->variable );
}
static int
Term_traverse( Term* self, visitproc visit, void* arg )
{
Py_VISIT( self->variable );
return 0;
}
static void
Term_dealloc( Term* self )
{
PyObject_GC_UnTrack( self );
Term_clear( self );
Py_TYPE( self )->tp_free( pyobject_cast( self ) );
}
static PyObject*
Term_repr( Term* self )
{
std::stringstream stream;
stream << self->coefficient << " * ";
stream << reinterpret_cast<Variable*>( self->variable )->variable.name();
return FROM_STRING( stream.str().c_str() );
}
static PyObject*
Term_variable( Term* self )
{
return newref( self->variable );
}
static PyObject*
Term_coefficient( Term* self )
{
return PyFloat_FromDouble( self->coefficient );
}
static PyObject*
Term_value( Term* self )
{
Variable* pyvar = reinterpret_cast<Variable*>( self->variable );
return PyFloat_FromDouble( self->coefficient * pyvar->variable.value() );
}
static PyObject*
Term_add( PyObject* first, PyObject* second )
{
return BinaryInvoke<BinaryAdd, Term>()( first, second );
}
static PyObject*
Term_sub( PyObject* first, PyObject* second )
{
return BinaryInvoke<BinarySub, Term>()( first, second );
}
static PyObject*
Term_mul( PyObject* first, PyObject* second )
{
return BinaryInvoke<BinaryMul, Term>()( first, second );
}
static PyObject*
Term_div( PyObject* first, PyObject* second )
{
return BinaryInvoke<BinaryDiv, Term>()( first, second );
}
static PyObject*
Term_neg( PyObject* value )
{
return UnaryInvoke<UnaryNeg, Term>()( value );
}
static PyObject*
Term_richcmp( PyObject* first, PyObject* second, int op )
{
switch( op )
{
case Py_EQ:
return BinaryInvoke<CmpEQ, Term>()( first, second );
case Py_LE:
return BinaryInvoke<CmpLE, Term>()( first, second );
case Py_GE:
return BinaryInvoke<CmpGE, Term>()( first, second );
default:
break;
}
PyErr_Format(
PyExc_TypeError,
"unsupported operand type(s) for %s: "
"'%.100s' and '%.100s'",
pyop_str( op ),
first->ob_type->tp_name,
second->ob_type->tp_name
);
return 0;
}
static PyMethodDef
Term_methods[] = {
{ "variable", ( PyCFunction )Term_variable, METH_NOARGS,
"Get the variable for the term." },
{ "coefficient", ( PyCFunction )Term_coefficient, METH_NOARGS,
"Get the coefficient for the term." },
{ "value", ( PyCFunction )Term_value, METH_NOARGS,
"Get the value for the term." },
{ 0 } // sentinel
};
static PyNumberMethods
Term_as_number = {
(binaryfunc)Term_add, /* nb_add */
(binaryfunc)Term_sub, /* nb_subtract */
(binaryfunc)Term_mul, /* nb_multiply */
#if PY_MAJOR_VERSION < 3
(binaryfunc)Term_div, /* nb_divide */
#endif
0, /* nb_remainder */
0, /* nb_divmod */
0, /* nb_power */
(unaryfunc)Term_neg, /* nb_negative */
0, /* nb_positive */
0, /* nb_absolute */
#if PY_MAJOR_VERSION >= 3
0, /* nb_bool */
#else
0, /* nb_nonzero */
#endif
0, /* nb_invert */
0, /* nb_lshift */
0, /* nb_rshift */
0, /* nb_and */
0, /* nb_xor */
(binaryfunc)0, /* nb_or */
#if PY_MAJOR_VERSION < 3
0, /* nb_coerce */
#endif
0, /* nb_int */
0, /* nb_long */
0, /* nb_float */
#if PY_MAJOR_VERSION < 3
0, /* nb_oct */
0, /* nb_hex */
#endif
0, /* nb_inplace_add */
0, /* nb_inplace_subtract */
0, /* nb_inplace_multiply */
#if PY_MAJOR_VERSION < 3
0, /* nb_inplace_divide */
#endif
0, /* nb_inplace_remainder */
0, /* nb_inplace_power */
0, /* nb_inplace_lshift */
0, /* nb_inplace_rshift */
0, /* nb_inplace_and */
0, /* nb_inplace_xor */
0, /* nb_inplace_or */
(binaryfunc)0, /* nb_floor_divide */
(binaryfunc)Term_div, /* nb_true_divide */
0, /* nb_inplace_floor_divide */
0, /* nb_inplace_true_divide */
#if PY_VERSION_HEX >= 0x02050000
(unaryfunc)0, /* nb_index */
#endif
#if PY_VERSION_HEX >= 0x03050000
(binaryfunc)0, /* nb_matrix_multiply */
(binaryfunc)0, /* nb_inplace_matrix_multiply */
#endif
};
PyTypeObject Term_Type = {
PyVarObject_HEAD_INIT( &PyType_Type, 0 )
"kiwisolver.Term", /* tp_name */
sizeof( Term ), /* tp_basicsize */
0, /* tp_itemsize */
(destructor)Term_dealloc, /* tp_dealloc */
(printfunc)0, /* tp_print */
(getattrfunc)0, /* tp_getattr */
(setattrfunc)0, /* tp_setattr */
#if PY_VERSION_HEX >= 0x03050000
( PyAsyncMethods* )0, /* tp_as_async */
#elif PY_VERSION_HEX >= 0x03000000
( void* ) 0, /* tp_reserved */
#else
( cmpfunc )0, /* tp_compare */
#endif
(reprfunc)Term_repr, /* tp_repr */
(PyNumberMethods*)&Term_as_number, /* tp_as_number */
(PySequenceMethods*)0, /* tp_as_sequence */
(PyMappingMethods*)0, /* tp_as_mapping */
(hashfunc)0, /* tp_hash */
(ternaryfunc)0, /* tp_call */
(reprfunc)0, /* tp_str */
(getattrofunc)0, /* tp_getattro */
(setattrofunc)0, /* tp_setattro */
(PyBufferProcs*)0, /* tp_as_buffer */
#if PY_MAJOR_VERSION >= 3
Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_GC|Py_TPFLAGS_BASETYPE, /* tp_flags */
#else
Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_GC|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_CHECKTYPES, /* tp_flags */
#endif
0, /* Documentation string */
(traverseproc)Term_traverse, /* tp_traverse */
(inquiry)Term_clear, /* tp_clear */
(richcmpfunc)Term_richcmp, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)0, /* tp_iter */
(iternextfunc)0, /* tp_iternext */
(struct PyMethodDef*)Term_methods, /* tp_methods */
(struct PyMemberDef*)0, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
(descrgetfunc)0, /* tp_descr_get */
(descrsetfunc)0, /* tp_descr_set */
0, /* tp_dictoffset */
(initproc)0, /* tp_init */
(allocfunc)PyType_GenericAlloc, /* tp_alloc */
(newfunc)Term_new, /* tp_new */
(freefunc)PyObject_GC_Del, /* tp_free */
(inquiry)0, /* tp_is_gc */
0, /* tp_bases */
0, /* tp_mro */
0, /* tp_cache */
0, /* tp_subclasses */
0, /* tp_weaklist */
(destructor)0 /* tp_del */
};
int import_term()
{
return PyType_Ready( &Term_Type );
}
|
