view PyParameterDescriptor.cpp @ 46:af9c4cee95a8

VC++ fixes.
Much of this is changing "and" to "&&".  I had never realised
until today that "and" is in fact a keyword in C++, albeit not
one that has been there since the start, so this should compile
(I eventually looked this up having been puzzled by how this
code could ever build with any other compiler).  However,
despite its keywordness, "and" still doesn't seem to be acceptable
to VC++.  Possibly there's an option to change this, or one could
use a macro -- but why not just stick with the token that compilers
are known to like?

/*

 * Vampy : This plugin is a wrapper around the Vamp plugin API.
 * It allows for writing Vamp plugins in Python.

 * Centre for Digital Music, Queen Mary University of London.
 * Copyright (C) 2008-2009 Gyorgy Fazekas, QMUL. (See Vamp sources 
 * for licence information.)

*/

#include <Python.h>
#include "PyParameterDescriptor.h"
#include "vamp-sdk/Plugin.h"
#include <string>
#include "PyTypeInterface.h"

using namespace std;
using namespace Vamp;
using Vamp::Plugin;

/*			 ParameterDescriptor Object's Methods 					*/ 
//these objects have no callable methods

/*		   PyParameterDescriptor methods implementing protocols   	*/ 
// these functions are called by the interpreter automatically

/* New ParameterDescriptor object */ 
static PyObject *
ParameterDescriptor_new(PyTypeObject *type, PyObject *args, PyObject *kw)
{

	ParameterDescriptorObject *self = 
	(ParameterDescriptorObject*)type->tp_alloc(type, 0);
	
	if (self == NULL) return NULL;
    self->dict = PyDict_New();
	if (self->dict == NULL) return NULL;

	/// allow copying objects
    if (args && PyTuple_Size(args) == 1) {
		PyObject* arg = PyTuple_GET_ITEM(args,0);
		if (PyParameterDescriptor_CheckExact(arg))
			PyDict_Merge(self->dict,PyParameterDescriptor_AS_DICT(arg),0);
		else if (PyDict_CheckExact(arg)) 
			PyDict_Merge(self->dict,arg,0);
		else {
			PyErr_SetString(PyExc_TypeError, 
			"Object takes zero or one ParameterDescriptor or dictionary arguments.");
			return NULL; 
		}
	}
	return (PyObject *) self;
}


/* DESTRUCTOR: delete type object */
static void
ParameterDescriptorObject_dealloc(ParameterDescriptorObject *self)
{
	Py_XDECREF(self->dict);
	PyObject_Del(self);
}


/* Set attributes */
static int
ParameterDescriptor_setattr(ParameterDescriptorObject *self, char *name, PyObject *v)
{
	if (v == NULL) {
		int rv = PyDict_DelItemString(self->dict, name);
		if (rv < 0)
			PyErr_SetString(PyExc_AttributeError,"non-existing ParameterDescriptor attribute");
		return rv;
	}
	else
		return PyDict_SetItemString(self->dict, name, v);
}


/* Get attributes */
static PyObject *
ParameterDescriptor_getattr(ParameterDescriptorObject *self, char *name)
{
	if (self->dict != NULL) {
		PyObject *v = PyDict_GetItemString(self->dict, name);
		if (v != NULL) 
		{
			Py_INCREF(v);
			return v;
		}
	}
	return NULL;
}


/* String representation */
static PyObject *
ParameterDescriptor_repr(PyObject *self)
{
	ParameterDescriptorObject* v = (ParameterDescriptorObject*)self;
	if (v->dict) return PyDict_Type.tp_repr((PyObject *)v->dict);
	else return PyString_FromString("ParameterDescriptor()");
}

#define ParameterDescriptor_alloc PyType_GenericAlloc
#define ParameterDescriptor_free PyObject_Del

PyTypeObject ParameterDescriptor_Type = {
	PyObject_HEAD_INIT(NULL)
	0,						/*ob_size*/
	"vampy.ParameterDescriptor",/*tp_name*/
	sizeof(ParameterDescriptorObject),	/*tp_basicsize*/
	0,						/*tp_itemsize*/
	(destructor)ParameterDescriptorObject_dealloc, /*tp_dealloc*/
	0,						/*tp_print*/
	(getattrfunc)ParameterDescriptor_getattr, /*tp_getattr*/
	(setattrfunc)ParameterDescriptor_setattr, /*tp_setattr*/
	0,						/*tp_compare*/
	ParameterDescriptor_repr,			/*tp_repr*/
	0,						/*tp_as_number*/
	0,						/*tp_as_sequence*/
	0,						/*tp_as_mapping*/
	0,						/*tp_hash*/
	0,                      /*tp_call*/
    0,                      /*tp_str*/
    0,                      /*tp_getattro*/
    0,                      /*tp_setattro*/
    0,                      /*tp_as_buffer*/
    Py_TPFLAGS_DEFAULT,     /*tp_flags*/
    0,                      /*tp_doc*/
    0,                      /*tp_traverse*/
    0,                      /*tp_clear*/
    0,                      /*tp_richcompare*/
    0,                      /*tp_weaklistoffset*/
    0,                      /*tp_iter*/
    0,                      /*tp_iternext*/
    0,				        /*tp_methods*/ //TypeObject Methods
    0,                      /*tp_members*/
    0,                      /*tp_getset*/
    0,                      /*tp_base*/
    0,                      /*tp_dict*/
    0,                      /*tp_descr_get*/
    0,                      /*tp_descr_set*/
    0,                      /*tp_dictoffset*/
    0,                      /*tp_init*/
    ParameterDescriptor_alloc,/*tp_alloc*/
    ParameterDescriptor_new,/*tp_new*/
    ParameterDescriptor_free,/*tp_free*/
    0,                      /*tp_is_gc*/
};

/*		  		 	  PyParameterDescriptor C++ API    				*/