cpython/Modules/cgensupport.c

/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
The Netherlands.

                        All Rights Reserved

Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
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Centrum or CWI or Corporation for National Research Initiatives or
CNRI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.

While CWI is the initial source for this software, a modified version
is made available by the Corporation for National Research Initiatives
(CNRI) at the Internet address ftp://ftp.python.org.

STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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******************************************************************/

/* Functions used by cgen output */

#include "Python.h"
#include "cgensupport.h"


/* Functions to extract arguments.
   These needs to know the total number of arguments supplied,
   since the argument list is a tuple only of there is more than
   one argument. */

int
PyArg_GetObject(args, nargs, i, p_arg)
	register PyObject *args;
	int nargs, i;
	PyObject **p_arg;
{
	if (nargs != 1) {
		if (args == NULL || !PyTuple_Check(args) ||
				nargs != PyTuple_Size(args) ||
				i < 0 || i >= nargs) {
			return PyErr_BadArgument();
		}
		else {
			args = PyTuple_GetItem(args, i);
		}
	}
	if (args == NULL) {
		return PyErr_BadArgument();
	}
	*p_arg = args;
	return 1;
}

int
PyArg_GetLong(args, nargs, i, p_arg)
	register PyObject *args;
	int nargs, i;
	long *p_arg;
{
	if (nargs != 1) {
		if (args == NULL || !PyTuple_Check(args) ||
				nargs != PyTuple_Size(args) ||
				i < 0 || i >= nargs) {
			return PyErr_BadArgument();
		}
		args = PyTuple_GetItem(args, i);
	}
	if (args == NULL || !PyInt_Check(args)) {
		return PyErr_BadArgument();
	}
	*p_arg = PyInt_AsLong(args);
	return 1;
}

int
PyArg_GetShort(args, nargs, i, p_arg)
	register PyObject *args;
	int nargs, i;
	short *p_arg;
{
	long x;
	if (!PyArg_GetLong(args, nargs, i, &x))
		return 0;
	*p_arg = (short) x;
	return 1;
}

static int
extractdouble(v, p_arg)
	register PyObject *v;
	double *p_arg;
{
	if (v == NULL) {
		/* Fall through to error return at end of function */
	}
	else if (PyFloat_Check(v)) {
		*p_arg = PyFloat_AS_DOUBLE((PyFloatObject *)v);
		return 1;
	}
	else if (PyInt_Check(v)) {
		*p_arg = PyInt_AS_LONG((PyIntObject *)v);
		return 1;
	}
	else if (PyLong_Check(v)) {
		*p_arg = PyLong_AsDouble(v);
		return 1;
	}
	return PyErr_BadArgument();
}

static int
extractfloat(v, p_arg)
	register PyObject *v;
	float *p_arg;
{
	if (v == NULL) {
		/* Fall through to error return at end of function */
	}
	else if (PyFloat_Check(v)) {
		*p_arg = (float) PyFloat_AS_DOUBLE((PyFloatObject *)v);
		return 1;
	}
	else if (PyInt_Check(v)) {
		*p_arg = (float) PyInt_AS_LONG((PyIntObject *)v);
		return 1;
	}
	else if (PyLong_Check(v)) {
		*p_arg = (float) PyLong_AsDouble(v);
		return 1;
	}
	return PyErr_BadArgument();
}

int
PyArg_GetFloat(args, nargs, i, p_arg)
	register PyObject *args;
	int nargs, i;
	float *p_arg;
{
	PyObject *v;
	float x;
	if (!PyArg_GetObject(args, nargs, i, &v))
		return 0;
	if (!extractfloat(v, &x))
		return 0;
	*p_arg = x;
	return 1;
}

int
PyArg_GetString(args, nargs, i, p_arg)
	PyObject *args;
	int nargs, i;
	string *p_arg;
{
	PyObject *v;
	if (!PyArg_GetObject(args, nargs, i, &v))
		return 0;
	if (!PyString_Check(v)) {
		return PyErr_BadArgument();
	}
	*p_arg = PyString_AsString(v);
	return 1;
}

int
PyArg_GetChar(args, nargs, i, p_arg)
	PyObject *args;
	int nargs, i;
	char *p_arg;
{
	string x;
	if (!PyArg_GetString(args, nargs, i, &x))
		return 0;
	if (x[0] == '\0' || x[1] != '\0') {
		/* Not exactly one char */
		return PyErr_BadArgument();
	}
	*p_arg = x[0];
	return 1;
}

int
PyArg_GetLongArraySize(args, nargs, i, p_arg)
	PyObject *args;
	int nargs, i;
	long *p_arg;
{
	PyObject *v;
	if (!PyArg_GetObject(args, nargs, i, &v))
		return 0;
	if (PyTuple_Check(v)) {
		*p_arg = PyTuple_Size(v);
		return 1;
	}
	if (PyList_Check(v)) {
		*p_arg = PyList_Size(v);
		return 1;
	}
	return PyErr_BadArgument();
}

int
PyArg_GetShortArraySize(args, nargs, i, p_arg)
	PyObject *args;
	int nargs, i;
	short *p_arg;
{
	long x;
	if (!PyArg_GetLongArraySize(args, nargs, i, &x))
		return 0;
	*p_arg = (short) x;
	return 1;
}

/* XXX The following four are too similar.  Should share more code. */

int
PyArg_GetLongArray(args, nargs, i, n, p_arg)
	PyObject *args;
	int nargs, i;
	int n;
	long *p_arg; /* [n] */
{
	PyObject *v, *w;
	if (!PyArg_GetObject(args, nargs, i, &v))
		return 0;
	if (PyTuple_Check(v)) {
		if (PyTuple_Size(v) != n) {
			return PyErr_BadArgument();
		}
		for (i = 0; i < n; i++) {
			w = PyTuple_GetItem(v, i);
			if (!PyInt_Check(w)) {
				return PyErr_BadArgument();
			}
			p_arg[i] = PyInt_AsLong(w);
		}
		return 1;
	}
	else if (PyList_Check(v)) {
		if (PyList_Size(v) != n) {
			return PyErr_BadArgument();
		}
		for (i = 0; i < n; i++) {
			w = PyList_GetItem(v, i);
			if (!PyInt_Check(w)) {
				return PyErr_BadArgument();
			}
			p_arg[i] = PyInt_AsLong(w);
		}
		return 1;
	}
	else {
		return PyErr_BadArgument();
	}
}

int
PyArg_GetShortArray(args, nargs, i, n, p_arg)
	PyObject *args;
	int nargs, i;
	int n;
	short *p_arg; /* [n] */
{
	PyObject *v, *w;
	if (!PyArg_GetObject(args, nargs, i, &v))
		return 0;
	if (PyTuple_Check(v)) {
		if (PyTuple_Size(v) != n) {
			return PyErr_BadArgument();
		}
		for (i = 0; i < n; i++) {
			w = PyTuple_GetItem(v, i);
			if (!PyInt_Check(w)) {
				return PyErr_BadArgument();
			}
			p_arg[i] = (short) PyInt_AsLong(w);
		}
		return 1;
	}
	else if (PyList_Check(v)) {
		if (PyList_Size(v) != n) {
			return PyErr_BadArgument();
		}
		for (i = 0; i < n; i++) {
			w = PyList_GetItem(v, i);
			if (!PyInt_Check(w)) {
				return PyErr_BadArgument();
			}
			p_arg[i] = (short) PyInt_AsLong(w);
		}
		return 1;
	}
	else {
		return PyErr_BadArgument();
	}
}

int
PyArg_GetDoubleArray(args, nargs, i, n, p_arg)
	PyObject *args;
	int nargs, i;
	int n;
	double *p_arg; /* [n] */
{
	PyObject *v, *w;
	if (!PyArg_GetObject(args, nargs, i, &v))
		return 0;
	if (PyTuple_Check(v)) {
		if (PyTuple_Size(v) != n) {
			return PyErr_BadArgument();
		}
		for (i = 0; i < n; i++) {
			w = PyTuple_GetItem(v, i);
			if (!extractdouble(w, &p_arg[i]))
				return 0;
		}
		return 1;
	}
	else if (PyList_Check(v)) {
		if (PyList_Size(v) != n) {
			return PyErr_BadArgument();
		}
		for (i = 0; i < n; i++) {
			w = PyList_GetItem(v, i);
			if (!extractdouble(w, &p_arg[i]))
				return 0;
		}
		return 1;
	}
	else {
		return PyErr_BadArgument();
	}
}

int
PyArg_GetFloatArray(args, nargs, i, n, p_arg)
	PyObject *args;
	int nargs, i;
	int n;
	float *p_arg; /* [n] */
{
	PyObject *v, *w;
	if (!PyArg_GetObject(args, nargs, i, &v))
		return 0;
	if (PyTuple_Check(v)) {
		if (PyTuple_Size(v) != n) {
			return PyErr_BadArgument();
		}
		for (i = 0; i < n; i++) {
			w = PyTuple_GetItem(v, i);
			if (!extractfloat(w, &p_arg[i]))
				return 0;
		}
		return 1;
	}
	else if (PyList_Check(v)) {
		if (PyList_Size(v) != n) {
			return PyErr_BadArgument();
		}
		for (i = 0; i < n; i++) {
			w = PyList_GetItem(v, i);
			if (!extractfloat(w, &p_arg[i]))
				return 0;
		}
		return 1;
	}
	else {
		return PyErr_BadArgument();
	}
}