Stowage/cpython
2
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-10-31 05:31:20 +00:00
Code Issues Projects Releases Packages Wiki Activity

Add new formats B, H, I, L for unsigned data types (analogous to the

Browse source 
recent changes in the struct module).
This commit is contained in:
Guido van Rossum 1997-01-03 19:09:47 +00:00
parent 6c87ecaff1
commit 549ab711aa
1 changed files with 85 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

86
Modules/arraymodule.c
View file

@ -120,6 +120,17 @@ b_setitem(ap, i, v)
return 0; return 0;
} }
static PyObject *
B_getitem(ap, i)
arrayobject *ap;
int i;
{
long x = ((unsigned char *)ap->ob_item)[i];
return PyInt_FromLong(x);
}
#define B_setitem b_setitem
static PyObject * static PyObject *
h_getitem(ap, i) h_getitem(ap, i)
arrayobject *ap; arrayobject *ap;
@ -142,6 +153,16 @@ h_setitem(ap, i, v)
return 0; return 0;
} }
static PyObject *
H_getitem(ap, i)
arrayobject *ap;
int i;
{
return PyInt_FromLong((long) ((unsigned short *)ap->ob_item)[i]);
}
#define H_setitem h_setitem
static PyObject * static PyObject *
i_getitem(ap, i) i_getitem(ap, i)
arrayobject *ap; arrayobject *ap;
@ -164,6 +185,36 @@ i_setitem(ap, i, v)
return 0; return 0;
} }
static PyObject *
I_getitem(ap, i)
arrayobject *ap;
int i;
{
return PyLong_FromUnsignedLong(
(unsigned long) ((unsigned int *)ap->ob_item)[i]);
}
static int
I_setitem(ap, i, v)
arrayobject *ap;
int i;
PyObject *v;
{
unsigned long x;
if (PyLong_Check(v)) {
x = PyLong_AsUnsignedLong(v);
if (x == (unsigned long) -1 && PyErr_Occurred())
return -1;
}
else {
if (!PyArg_Parse(v, "l;array item must be integer", &x))
return -1;
}
if (i >= 0)
((unsigned int *)ap->ob_item)[i] = x;
return 0;
}
static PyObject * static PyObject *
l_getitem(ap, i) l_getitem(ap, i)
arrayobject *ap; arrayobject *ap;
@ -186,6 +237,35 @@ l_setitem(ap, i, v)
return 0; return 0;
} }
static PyObject *
L_getitem(ap, i)
arrayobject *ap;
int i;
{
return PyLong_FromUnsignedLong(((unsigned long *)ap->ob_item)[i]);
}
static int
L_setitem(ap, i, v)
arrayobject *ap;
int i;
PyObject *v;
{
unsigned long x;
if (PyLong_Check(v)) {
x = PyLong_AsUnsignedLong(v);
if (x == (unsigned long) -1 && PyErr_Occurred())
return -1;
}
else {
if (!PyArg_Parse(v, "l;array item must be integer", &x))
return -1;
}
if (i >= 0)
((unsigned long *)ap->ob_item)[i] = x;
return 0;
}
static PyObject * static PyObject *
f_getitem(ap, i) f_getitem(ap, i)
arrayobject *ap; arrayobject *ap;
@ -234,9 +314,13 @@ d_setitem(ap, i, v)
static struct arraydescr descriptors[] = { static struct arraydescr descriptors[] = {
{'c', sizeof(char), c_getitem, c_setitem}, {'c', sizeof(char), c_getitem, c_setitem},
{'b', sizeof(char), b_getitem, b_setitem}, {'b', sizeof(char), b_getitem, b_setitem},
{'B', sizeof(char), B_getitem, B_setitem},
{'h', sizeof(short), h_getitem, h_setitem}, {'h', sizeof(short), h_getitem, h_setitem},
{'H', sizeof(short), H_getitem, H_setitem},
{'i', sizeof(int), i_getitem, i_setitem}, {'i', sizeof(int), i_getitem, i_setitem},
{'I', sizeof(int), I_getitem, I_setitem},
{'l', sizeof(long), l_getitem, l_setitem}, {'l', sizeof(long), l_getitem, l_setitem},
{'L', sizeof(long), L_getitem, L_setitem},
{'f', sizeof(float), f_getitem, f_setitem}, {'f', sizeof(float), f_getitem, f_setitem},
{'d', sizeof(double), d_getitem, d_setitem}, {'d', sizeof(double), d_getitem, d_setitem},
{'\0', 0, 0, 0} /* Sentinel */ {'\0', 0, 0, 0} /* Sentinel */
@ -1166,7 +1250,7 @@ a_array(self, args)
} }
} }
PyErr_SetString(PyExc_ValueError, PyErr_SetString(PyExc_ValueError,
"bad typecode (must be c, b, h, l, f or d)"); "bad typecode (must be c, b, B, h, H, i, I, l, L, f or d)");
return NULL; return NULL;
} }