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Commit 3600c6a7 authored by Jim Fulton's avatar Jim Fulton
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/*
$Id: ExtensionClass.c,v 1.1 1996/10/22 22:26:08 jim Exp $
Extension Class
Copyright
Copyright 1996 Digital Creations, L.C., 910 Princess Anne
Street, Suite 300, Fredericksburg, Virginia 22401 U.S.A. All
rights reserved. Copyright in this software is owned by DCLC,
unless otherwise indicated. Permission to use, copy and
distribute this software is hereby granted, provided that the
above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear. Note that
any product, process or technology described in this software
may be the subject of other Intellectual Property rights
reserved by Digital Creations, L.C. and are not licensed
hereunder.
Trademarks
Digital Creations & DCLC, are trademarks of Digital Creations, L.C..
All other trademarks are owned by their respective companies.
No Warranty
The software is provided "as is" without warranty of any kind,
either express or implied, including, but not limited to, the
implied warranties of merchantability, fitness for a particular
purpose, or non-infringement. This software could include
technical inaccuracies or typographical errors. Changes are
periodically made to the software; these changes will be
incorporated in new editions of the software. DCLC may make
improvements and/or changes in this software at any time
without notice.
Limitation Of Liability
In no event will DCLC be liable for direct, indirect, special,
incidental, economic, cover, or consequential damages arising
out of the use of or inability to use this software even if
advised of the possibility of such damages. Some states do not
allow the exclusion or limitation of implied warranties or
limitation of liability for incidental or consequential
damages, so the above limitation or exclusion may not apply to
you.
If you have questions regarding this software,
contact:
Jim Fulton, jim@digicool.com
Digital Creations L.C.
(540) 371-6909
$Log: ExtensionClass.c,v $
Revision 1.1 1996/10/22 22:26:08 jim
*** empty log message ***
*/
static char ExtensionClass_module_documentation[] =
"ExtensionClass - Classes implemented in c\n"
"\n"
"Built-in C classes are like Built-in types except that\n"
"they provide some of the behavior of Python classes:\n"
"\n"
" - They provide access to unbound methods,\n"
" - They can be called to create instances.\n"
"\n"
"$Id: ExtensionClass.c,v 1.1 1996/10/22 22:26:08 jim Exp $\n"
;
#include "Python.h"
#define ASSIGN(V,E) {PyObject *__e; __e=(E); Py_XDECREF(V); (V)=__e;}
#define UNLESS(E) if(!(E))
#define UNLESS_ASSIGN(V,E) ASSIGN(V,E) UNLESS(V)
#define INSTANCE_DICT(inst) \
*(((PyObject**)inst) + (inst->ob_type->tp_basicsize/sizeof(PyObject*) - 1))
typedef struct { PyObject_HEAD } Dataless;
/* Declarations for objects of type ExtensionClass */
#include "ExtensionClass.h"
staticforward PyExtensionClass CCLtype;
/* CMethod objects: */
typedef struct {
PyObject_HEAD
PyTypeObject *type;
PyObject *self;
char *name;
PyCFunction meth;
int flags;
char *doc;
} CMethod;
staticforward PyTypeObject CMethodType;
static CMethod *
newCMethod(PyTypeObject *type,
char *name, PyCFunction meth, int flags, char *doc)
{
CMethod *self;
UNLESS(self = PyObject_NEW(CMethod, &CMethodType)) return NULL;
Py_INCREF(type);
self->type=type;
self->self=NULL;
self->name=name;
self->meth=meth;
self->flags=flags;
self->doc=doc;
return self;
}
static CMethod *
bindCMethod(CMethod *m, PyObject *inst)
{
CMethod *self;
UNLESS(self = PyObject_NEW(CMethod, &CMethodType)) return NULL;
Py_INCREF(inst);
Py_INCREF(m->type);
self->type=m->type;
self->self=inst;
self->name=m->name;
self->meth=m->meth;
self->flags=m->flags;
self->doc=m->doc;
return self;
}
static void
CMethod_dealloc(self)
CMethod *self;
{
Py_DECREF(self->type);
Py_XDECREF(self->self);
PyMem_DEL(self);
}
static PyObject *
call_cmethod(self, inst, args, kw)
CMethod *self;
PyObject *inst;
PyObject *args;
PyObject *kw;
{
if (!(self->flags & METH_VARARGS)) {
int size = PyTuple_Size(args);
if (size == 1)
args = PyTuple_GET_ITEM(args, 0);
else if (size == 0)
args = NULL;
}
if (self->flags & METH_KEYWORDS)
return (*(PyCFunctionWithKeywords)self->meth)(inst, args, kw);
else
{
if (kw != NULL && PyDict_Size(kw) != 0)
{
PyErr_SetString(PyExc_TypeError,
"this function takes no keyword arguments");
return NULL;
}
return (*self->meth)(inst, args);
}
}
static int
CMethod_issubclass(PyExtensionClass *sub, PyExtensionClass *type)
{
int i,l;
PyObject *t;
if(! sub->bases) return 0;
l=PyTuple_Size(sub->bases);
for(i=0; i < l; i++)
{
t=PyTuple_GET_ITEM(sub->bases, i);
if(t==(PyObject*)type) return 1;
if(t->ob_type==(PyTypeObject*)&CCLtype
&& ((PyExtensionClass*)t)->bases
&& CMethod_issubclass((PyExtensionClass*)t,type)
) return 1;
}
return 0;
}
static PyObject *
CMethod_call(self,args,kw)
CMethod *self;
PyObject *args;
PyObject *kw;
{
int size;
char *buf;
PyObject *s;
if(self->self) return call_cmethod(self,self->self,args,kw);
if((size=PyTuple_Size(args)) > 0)
{
PyObject *first=0;
UNLESS(first=PyTuple_GET_ITEM(args, 0)) return NULL;
if(first->ob_type==self->type
||
(first->ob_type->ob_type==(PyTypeObject*)&CCLtype
&&
CMethod_issubclass((PyExtensionClass *)(first->ob_type),
(PyExtensionClass *)(self->type))
)
);
{
PyObject *rest=0;
UNLESS(rest=PySequence_GetSlice(args,1,size)) return NULL;
return call_cmethod(self,first,rest,kw);
}
}
/* Call of unbound method without instance argument */
size=strlen(self->type->tp_name);
UNLESS(s=PyString_FromStringAndSize(NULL,size+48)) return NULL;
buf=PyString_AsString(s);
sprintf(buf,
"unbound C method must be called with %s 1st argument",
self->type->tp_name);
PyErr_SetObject(PyExc_TypeError,s);
Py_DECREF(s);
return NULL;
}
static PyObject *
CMethod_getattr(self,name)
CMethod *self;
char *name;
{
PyObject *r;
if(strcmp(name,'__name__')==0 || strcmp(name,'func_name')==0 )
return PyString_FromString(self->name);
if(strcmp(name,'func_code')==0 ||
strcmp(name,'im_func')==0)
{
Py_INCREF(self);
return (PyObject *)self;
}
if(strcmp(name,'__doc__')==0 ||
strcmp(name,'func_doc')==0 ||
strcmp(name,'func_doc')==0)
{
if(self->doc)
return PyString_FromString(self->doc);
else
return PyString_FromString("");
}
if(strcmp(name,'im_class')==0)
{
Py_INCREF(self->type);
return (PyObject *)self->type;
}
if(strcmp(name,'im_self')==0)
{
if(self->self) r=self->self;
else r=Py_None;
Py_INCREF(r);
return r;
}
}
static PyTypeObject CMethodType = {
PyObject_HEAD_INIT(&PyType_Type)
0, /*ob_size*/
"CMethod", /*tp_name*/
sizeof(CMethod), /*tp_basicsize*/
0, /*tp_itemsize*/
/* methods */
(destructor)CMethod_dealloc, /*tp_dealloc*/
(printfunc)0, /*tp_print*/
(getattrfunc)0, /*tp_getattr*/
(setattrfunc)0, /*tp_setattr*/
(cmpfunc)0, /*tp_compare*/
(reprfunc)0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
(hashfunc)0, /*tp_hash*/
(ternaryfunc)CMethod_call, /*tp_call*/
(reprfunc)0, /*tp_str*/
/* Space for future expansion */
0L,0L,0L,0L,
"Storage manager for unbound C function PyObject data"
/* Documentation string */
};
/* Pmethod objects: */
typedef struct {
PyObject_HEAD
PyTypeObject *type;
PyObject *self;
PyObject *meth;
} Pmethod;
staticforward PyTypeObject PmethodType;
static Pmethod *
newPmethod(PyTypeObject *type, PyObject *meth)
{
Pmethod *self;
UNLESS(self = PyObject_NEW(Pmethod, &PmethodType)) return NULL;
Py_INCREF(type);
Py_INCREF(meth);
self->type=type;
self->self=NULL;
self->meth=meth;
return self;
}
static Pmethod *
bindPmethod(Pmethod *m, PyObject *inst)
{
Pmethod *self;
UNLESS(self = PyObject_NEW(Pmethod, &PmethodType)) return NULL;
Py_INCREF(inst);
Py_INCREF(m->type);
self->type=m->type;
self->self=inst;
self->meth=m->meth;
return self;
}
static void
Pmethod_dealloc(self)
Pmethod *self;
{
Py_DECREF(self->type);
Py_XDECREF(self->self);
PyMem_DEL(self);
}
static PyObject *
call_pmethod(self, inst, args, kw)
Pmethod *self;
PyObject *inst;
PyObject *args;
PyObject *kw;
{
PyObject *a;
UNLESS(a=Py_BuildValue("(O)",inst)) return NULL;
UNLESS_ASSIGN(a,PySequence_Concat(a,args)) return NULL;
UNLESS_ASSIGN(a,PyEval_CallObjectWithKeywords(self->meth,a,kw)) return NULL;
return a;
}
static PyObject *
Pmethod_call(self,args,kw)
Pmethod *self;
PyObject *args;
PyObject *kw;
{
int size;
char *buf;
PyObject *s;
if(self->self) return call_pmethod(self,self->self,args,kw);
if((size=PyTuple_Size(args)) > 0)
{
PyObject *first=0;
UNLESS(first=PyTuple_GET_ITEM(args, 0)) return NULL;
if(first->ob_type==self->type
||
(first->ob_type->ob_type==(PyTypeObject*)&CCLtype
&&
CMethod_issubclass((PyExtensionClass *)(first->ob_type),
(PyExtensionClass *)(self->type))
)
);
{
PyObject *rest=0;
UNLESS(rest=PySequence_GetSlice(args,1,size)) return NULL;
return call_pmethod(self,first,rest,kw);
}
}
/* Call of unbound method without instance argument */
size=strlen(self->type->tp_name);
UNLESS(s=PyString_FromStringAndSize(NULL,size+48)) return NULL;
buf=PyString_AsString(s);
sprintf(buf,
"unbound Python method must be called with %s 1st argument",
self->type->tp_name);
PyErr_SetObject(PyExc_TypeError,s);
Py_DECREF(s);
return NULL;
}
static PyObject *
Pmethod_getattr(self,name)
Pmethod *self;
char *name;
{
PyObject *r;
if(strcmp(name,'__name__')==0 || strcmp(name,'func_name')==0 )
return PyObject_GetAttrString(self->meth,"__name__");
if(strcmp(name,'im_func')==0)
{
Py_INCREF(self->meth);
return self->meth;
}
if(strcmp(name,'__doc__')==0 ||
strcmp(name,'func_doc')==0 ||
strcmp(name,'func_doc')==0)
return PyObject_GetAttrString(self->meth,"__doc__");
if(strcmp(name,'im_class')==0)
{
Py_INCREF(self->type);
return (PyObject *)self->type;
}
if(strcmp(name,'im_self')==0)
{
if(self->self) r=self->self;
else r=Py_None;
Py_INCREF(r);
return r;
}
}
static PyTypeObject PmethodType = {
PyObject_HEAD_INIT(&PyType_Type)
0, /*ob_size*/
"Python Method", /*tp_name*/
sizeof(Pmethod), /*tp_basicsize*/
0, /*tp_itemsize*/
/* methods */
(destructor)Pmethod_dealloc, /*tp_dealloc*/
(printfunc)0, /*tp_print*/
(getattrfunc)0, /*tp_getattr*/
(setattrfunc)0, /*tp_setattr*/
(cmpfunc)0, /*tp_compare*/
(reprfunc)0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
(hashfunc)0, /*tp_hash*/
(ternaryfunc)Pmethod_call, /*tp_call*/
(reprfunc)0, /*tp_str*/
/* Space for future expansion */
0L,0L,0L,0L,
"Storage manager for unbound C function PyObject data"
/* Documentation string */
};
/* Special Methods */
#define HAS(M) (M && ((void*)M != (void*)MetaTypeUndefinedMethod))
#define UNARY_OP(OP) \
static PyObject * \
OP ## _by_name(PyObject *self, PyObject *args) { \
UNLESS(PyArg_Parse(args,"")) return NULL; \
return self->ob_type->tp_ ## OP(self); \
}
UNARY_OP(repr)
UNARY_OP(str)
static PyObject *
hash_by_name(PyObject *self, PyObject *args) {
long r;
UNLESS(PyArg_Parse(args,"")) return NULL;
UNLESS(-1 != (r=self->ob_type->tp_hash(self))) return NULL;
return PyInt_FromLong(r);
}
static PyObject *
call_by_name(PyObject *self, PyObject *args, PyObject *kw)
{
return self->ob_type->tp_call(self,args,kw);
}
static PyObject *
compare_by_name(PyObject *self, PyObject *args)
{
PyObject *other;
long r;
UNLESS(PyArg_Parse(args,"O", &other)) return NULL;
return PyInt_FromLong(self->ob_type->tp_compare(self,other));
}
static PyObject *
getattr_by_name(PyObject *self, PyObject *args)
{
char *name;
UNLESS(PyArg_Parse(args,"s",&name)) return NULL;
return self->ob_type->tp_getattr(self,name);
}
static PyObject *
setattr_by_name(PyObject *self, PyObject *args)
{
char *name;
PyObject *v;
UNLESS(PyArg_Parse(args,"sO",&name,&v)) return NULL;
UNLESS(-1 != self->ob_type->tp_setattr(self,name,v)) return NULL;
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *
length_by_name(PyObject *self, PyObject *args)
{
long r;
UNLESS(PyArg_Parse(args,"")) return NULL;
if(self->ob_type->tp_as_sequence)
{
UNLESS(-1 != (r=self->ob_type->tp_as_sequence->sq_length(self)))
return NULL;
}
else
{
UNLESS(-1 != (r=self->ob_type->tp_as_mapping->mp_length(self)))
return NULL;
}
return PyInt_FromLong(r);
}
static PyObject *
getitem_by_name(PyObject *self, PyObject *args)
{
PyObject *key;
UNLESS(PyArg_Parse(args,"O",&key)) return NULL;
if(self->ob_type->tp_as_mapping)
return self->ob_type->tp_as_mapping->mp_subscript(self,key);
else
{
int index;
UNLESS(-1 != (index=PyInt_AsLong(key))) return NULL;
return self->ob_type->tp_as_sequence->sq_item(self,index);
}
}
static PyCFunction item_by_name=(PyCFunction)getitem_by_name;
static PyCFunction subscript_by_name=(PyCFunction)getitem_by_name;
static int
setitem_by_name(PyObject *self, PyObject *args)
{
PyObject *key, *v;
UNLESS(PyArg_Parse(args,"OO",&key,&v)) return NULL;
if(self->ob_type->tp_as_mapping)
return self->ob_type->tp_as_mapping->mp_ass_subscript(self,key,v);
else
{
int index;
UNLESS(-1 != (index=PyInt_AsLong(key))) return -1;
return self->ob_type->tp_as_sequence->sq_ass_item(self,index,v);
}
}
static PyCFunction ass_item_by_name=(PyCFunction)setitem_by_name;
static PyCFunction ass_subscript_by_name=(PyCFunction)setitem_by_name;
static PyObject *
slice_by_name(PyObject *self, PyObject *args)
{
int i1,i2;
UNLESS(PyArg_Parse(args,"ii",&i1,&i2)) return NULL;
return self->ob_type->tp_as_sequence->sq_slice(self,i1,i2);
}
static int
ass_slice_by_name(PyObject *self, PyObject *args)
{
int i1,i2;
PyObject *v;
UNLESS(PyArg_Parse(args,"iiO",&i1,&i2,&v)) return -1;
return self->ob_type->tp_as_sequence->sq_ass_slice(self,i1,i2,v);
}
static PyObject *
concat_by_name(PyObject *self, PyObject *args)
{
PyObject *other;
UNLESS(PyArg_Parse(args,"O",&other)) return NULL;
return self->ob_type->tp_as_sequence->sq_concat(self,other);
}
static PyObject *
repeat_by_name(PyObject *self, PyObject *args)
{
int r;
UNLESS(PyArg_Parse(args,"i",&r)) return NULL;
return self->ob_type->tp_as_sequence->sq_repeat(self,r);
}
#define BINOP(OP,AOP) \
static PyObject * \
OP ## _by_name(PyObject *self, PyObject *args) { \
PyObject *v; \
UNLESS(PyArg_Parse(args,"O",&v)) return NULL; \
return PyNumber_ ## AOP(self,v); \
}
BINOP(add,Add);
BINOP(subtract,Subtract);
BINOP(multiply,Multiply);
BINOP(divide,Divide);
BINOP(remainder,Remainder);
BINOP(divmod,Divmod);
static PyObject *
power_by_name(PyObject *self, PyObject *args)
{
PyObject *v, *z=NULL;
UNLESS(PyArg_ParseTuple(args,"O|O",&v,&z)) return NULL;
return self->ob_type->tp_as_number->nb_power(self,v,z);
}
#define UNOP(OP) \
static PyObject * \
OP ## _by_name(PyObject *self, PyObject *args) { \
UNLESS(PyArg_Parse(args,"")) return NULL; \
return self->ob_type->tp_as_number->nb_ ## OP(self); \
}
UNOP(negative);
UNOP(positive);
UNOP(absolute);
static PyObject *
nonzero_by_name(PyObject *self, PyObject *args) {
long r;
UNLESS(PyArg_Parse(args,"")) return NULL;
UNLESS(-1 != (r=self->ob_type->tp_as_number->nb_nonzero(self))) return NULL;
return PyInt_FromLong(r);
}
UNOP(invert);
BINOP(lshift,Lshift);
BINOP(rshift,Rshift);
BINOP(and,And);
BINOP(or,Or);
BINOP(xor,Xor);
static PyObject *
coerce_by_name(PyObject *self, PyObject *args)
{
PyObject *v;
int r;
UNLESS(PyArg_Parse(args,"O", &v)) return NULL;
UNLESS(-1 != (r=self->ob_type->tp_as_number->nb_coerce(&self,&v)))
{
Py_INCREF(Py_None);
return Py_None;
}
args=Py_BuildValue("OO",self,v);
Py_DECREF(self);
Py_DECREF(v);
return args;
}
UNOP(long);
UNOP(int);
UNOP(float);
UNOP(oct);
UNOP(hex);
#define FILLENTRY(T,MN,N,F,D) if(T ## _ ## MN) { \
UNLESS(-1 != PyMapping_SetItemString(dict,"__" # N "__", \
(PyObject*)newCMethod((PyTypeObject *)type,"__" # N "__", \
(PyCFunction)MN ## _by_name, F, # D))) \
goto err; \
}
static PyObject *
getBaseDictionary(PyExtensionClass *type)
{
PyNumberMethods *nm;
PySequenceMethods *sm;
PyMappingMethods *mm;
PyObject *dict;
UNLESS(dict=PyDict_New()) return NULL;
FILLENTRY(type->tp, repr, repr, 0, "convert to an expression string");
FILLENTRY(type->tp, hash, hash, 0, "compute a hash value");
FILLENTRY(type->tp, call, call, 2, "call as a function");
FILLENTRY(type->tp, compare, comp, 0, "compare with another object");
FILLENTRY(type->tp, getattr, getattr, 0, "Get an attribute");
FILLENTRY(type->tp, setattr, setattr, 0, "Get an attribute");
if(sm=type->tp_as_sequence)
{
FILLENTRY(sm->sq, length, len, 0, "Get the object length");
FILLENTRY(sm->sq, concat, concat, 0,
"Concatinate the object with another");
FILLENTRY(sm->sq, repeat, repeat, 0,
"Get a new object that is the object repeated.");
FILLENTRY(sm->sq, item, getitem, 0, "Get an item");
FILLENTRY(sm->sq, slice, getslice, 0, "Get a slice");
FILLENTRY(sm->sq, ass_item, setitem, 0, "Assign an item");
FILLENTRY(sm->sq, ass_slice, setslice, 0, "Assign a slice");
}
if(mm=type->tp_as_mapping)
{
FILLENTRY(mm->mp, length, len, 0, "Get the object length");
FILLENTRY(mm->mp, subscript, getitem, 0, "Get an item");
FILLENTRY(mm->mp, ass_subscript, setitem, 0, "Assign an item");
}
if((nm=type->tp_as_number) != NULL)
{
FILLENTRY(nm->nb, add, add, 0, "Add to another");
FILLENTRY(nm->nb, subtract, sub, 0, "Subtract another");
FILLENTRY(nm->nb, multiply, mul, 0, "Multiple by another");
FILLENTRY(nm->nb, divide, div, 0, "Divide by another");
FILLENTRY(nm->nb, remainder, mod, 0, "Compute a remainder");
FILLENTRY(nm->nb, power, pow, 1, "Raise to a power");
FILLENTRY(nm->nb, divmod, divmod, 0,
"Compute the whole result and remainder of dividing\n"
"by another");
FILLENTRY(nm->nb, negative, neg, 0, "Get the negative value.");
FILLENTRY(nm->nb, positive, pos, 0, "Compute positive value");
FILLENTRY(nm->nb, absolute, abs, 0, "Compute absolute value");
FILLENTRY(nm->nb, nonzero, nonzero, 0, "Determine whether nonzero");
FILLENTRY(nm->nb, invert, inv, 0, "Compute inverse");
FILLENTRY(nm->nb, lshift, lshift, 0, "Shist left");
FILLENTRY(nm->nb, rshift, rshift, 0, "Shist right");
FILLENTRY(nm->nb, and, and, 0, "bitwize logical and");
FILLENTRY(nm->nb, or, or, 0, "bitwize logical or");
FILLENTRY(nm->nb, xor, xor, 0, "bitwize logical excusive or");
FILLENTRY(nm->nb, coerce, coerce, 0,
"Coerce woth another to a common type");
FILLENTRY(nm->nb, int, int, 0, "Convert to an integer");
FILLENTRY(nm->nb, long, long, 0,
"Convert to an infinite-precision integer");
FILLENTRY(nm->nb, float, float, 0, "Convert to floating point number");
FILLENTRY(nm->nb, oct, oct, 0, "Convert to an octal string");
FILLENTRY(nm->nb, hex, hex, 0, "Convert to a hexadecimal string");
}
return dict;
err:
Py_DECREF(dict);
return NULL;
}
#undef HAS
#undef UNARY_OP
#undef BINOP
#undef UNOP
#undef FILLENTRY
static PyObject *
initializeBaseExtensionClass(PyExtensionClass *self)
{
PyMethodChain *chain;
PyObject *dict;
self->ob_type=(PyTypeObject*)&CCLtype;
Py_INCREF(self->ob_type);
UNLESS(dict=self->class_dictionary=getBaseDictionary(self)) return NULL;
chain=&(self->methods);
while (chain != NULL)
{
PyMethodDef *ml = chain->methods;
for (; ml && ml->ml_name != NULL; ml++)
{
if(ml->ml_meth)
{
UNLESS(-1 != PyMapping_SetItemString(
dict,ml->ml_name,
(PyObject*)
newCMethod((PyTypeObject *)self,
ml->ml_name,
ml->ml_meth,
ml->ml_flags,
ml->ml_doc)))
return NULL;
}
else if(ml->ml_doc && *(ml->ml_doc))
{
/* No actual meth, this is probably to hook a doc string
onto a special method. */
PyObject *m;
if(m=PyMapping_GetItemString(dict,ml->ml_name))
{
if(m->ob_type==&CMethodType)
((CMethod *)(m))->doc=ml->ml_doc;
}
else
PyErr_Clear();
}
}
chain=chain->link;
}
return (PyObject*)self;
}
static void
CCL_dealloc(self)
PyExtensionClass *self;
{
Py_XDECREF(self->class_dictionary);
Py_XDECREF(self->bases);
Py_XDECREF(self->ob_type);
PyMem_DEL(self);
}
static PyObject *CCL_getattr();
static PyObject *
ExtensionClass_FindInstanceAttribute(inst,name)
PyObject *inst;
char *name;
{
/* Look up an attribute for an instance from:
The instance dictionary,
The class dictionary, or
The base objects.
*/
PyObject *r=0;
PyExtensionClass *self;
self=(PyExtensionClass*)(inst->ob_type);
if(*name=='_' && name[1]=='_')
{
if(strcmp(name+2,"class__")==0)
{
Py_INCREF(self);
return (PyObject*)self;
}
if(self->bases && strcmp(name+2,"dict__")==0)
{
r = INSTANCE_DICT(inst);
Py_INCREF(r);
return r;
}
}
if(self->bases)
{
r= INSTANCE_DICT(inst);
r = PyMapping_GetItemString(r,name);
}
UNLESS(r)
{
PyErr_Clear();
UNLESS(r=CCL_getattr(self,name)) return NULL;
/* We got something from our class, maybe its an unbound method. */
if(r->ob_type==&CMethodType)
{
UNLESS_ASSIGN(r,(PyObject*)bindCMethod((CMethod*)r,inst))
return NULL;
}
if(r->ob_type==&PmethodType)
{
PyObject *m;
m=((Pmethod *)r)->meth;
if(m->ob_type->ob_type==(PyTypeObject*)&CCLtype &&
(((PyExtensionClass*)m->ob_type)->class_flags &
EXTENSIONCLASS_BINDABLE_FLAG
)
)
{
UNLESS_ASSIGN(r,PyObject_CallMethod(m,"__bind_to_object__",
"O", inst))
return NULL;
}
else
{
UNLESS_ASSIGN(r,(PyObject*)bindPmethod((Pmethod*)r,inst))
return NULL;
}
}
}
return r;
}
static PyObject *
CCL_getattr(self, name)
PyExtensionClass *self;
char *name;
{
PyObject *r;
int local=1;
if(*name=='.' && name[1]==0)
return (PyObject*)ExtensionClass_FindInstanceAttribute;
if(*name=='_' && name[1]=='_')
{
char *n;
n=name+2;
if(strcmp(n,"doc__")==0 && self->tp_doc)
return PyString_FromString(self->tp_doc);
if(strcmp(n,"name__")==0)
return PyString_FromString(self->tp_name);
if(strcmp(n,"dict__")==0)
{
Py_INCREF(self->class_dictionary);
return self->class_dictionary;
}
if(strcmp(n,"bases__")==0)
{
Py_INCREF(self->bases);
return self->bases;
}
}
r=PyMapping_GetItemString(self->class_dictionary,name);
UNLESS(r)
{
local=0;
if(self->bases)
{
int n, i;
PyObject *c;
n=PyTuple_Size(self->bases);
for(i=0; i < n; i++)
{
PyErr_Clear();
c=PyTuple_GET_ITEM(self->bases, i);
if(r=PyObject_GetAttrString(c,name)) break;
}
}
UNLESS(r)
{
PyObject *t, *v, *tb;
char *s;
PyErr_Fetch(&t,&v,&tb);
if(t==PyExc_KeyError &&
PyString_Check(v) && (s=PyString_AsString(v))
&& strcmp(s,name)==0)
{
Py_DECREF(t);
t=PyExc_AttributeError;
Py_INCREF(t);
}
PyErr_Restore(t,v,tb);
return NULL;
}
}
if(PyFunction_Check(r) ||
(r->ob_type->ob_type==(PyTypeObject*)&CCLtype &&
(((PyExtensionClass*)r->ob_type)->class_flags &
EXTENSIONCLASS_BINDABLE_FLAG
)
)
)
UNLESS_ASSIGN(r,(PyObject*)newPmethod((PyTypeObject *)self,r))
return NULL;
if(PyMethod_Check(r) && ! PyMethod_Self(r))
UNLESS_ASSIGN(r,(PyObject*)newPmethod((PyTypeObject *)self,
PyMethod_Function(r)))
return NULL;
return r;
}
static int
CCL_setattr(self, name, v)
PyExtensionClass *self;
char *name;
PyObject *v;
{
return PyMapping_SetItemString(self->class_dictionary, name, v);
}
static PyObject *
CCL_call(self, arg, kw)
PyExtensionClass *self;
PyObject *arg, *kw;
{
PyObject *inst=0, *init=0, *args=0;
int check;
struct Dataless { PyObject_HEAD };
typedef struct { PyObject_VAR_HEAD } PyVarObject__;
if(PyArg_ParseTuple(arg,"Oi",&inst,&check))
{
if(check==42 && inst->ob_type==&PyType_Type)
{
initializeBaseExtensionClass((PyExtensionClass*)inst);
return (PyObject*)inst;
}
}
else PyErr_Clear();
if(self->tp_itemsize)
{
/* We have a variable-sized object, we need to get it's size */
PyObject *var_size;
int size;
if(var_size=CCL_getattr(self,"__var_size__"))
{
UNLESS_ASSIGN(var_size,PyObject_CallObject(var_size,args))
return NULL;
}
else
{
UNLESS(-1 != (size=PyTuple_Size(args))) return NULL;
if(size > 0)
{
var_size=PyTuple_GET_ITEM(args, 0);
if(PyInt_Check(var_size))
size=PyInt_AsLong(var_size);
else
size=-1;
}
else
size=-1;
if(size < 0)
{
PyErr_SetString(PyExc_TypeError,
"object size expected as first argument");
return NULL;
}
}
UNLESS(inst=PyObject_NEW_VAR(PyObject,(PyTypeObject *)self, size))
return NULL;
memset(inst,0,self->tp_basicsize+self->tp_itemsize*size);
inst->ob_refcnt=1;
inst->ob_type=(PyTypeObject *)self;
((PyVarObject__*)inst)->ob_size=size;
}
else
{
UNLESS(inst=PyObject_NEW(PyObject,(PyTypeObject *)self)) return NULL;
memset(inst,0,self->tp_basicsize);
inst->ob_refcnt=1;
inst->ob_type=(PyTypeObject *)self;
}
Py_INCREF(self);
if(self->bases)
{
UNLESS(INSTANCE_DICT(inst)=PyDict_New()) goto err;
}
if(init=CCL_getattr(self,"__init__"))
{
UNLESS(args=Py_BuildValue("(O)",inst)) goto err;
if(arg) UNLESS_ASSIGN(args,PySequence_Concat(args,arg)) goto err;
UNLESS_ASSIGN(args,PyEval_CallObjectWithKeywords(init,args,kw)) goto err;
Py_DECREF(args);
Py_DECREF(init);
}
else PyErr_Clear();
return inst;
err:
Py_DECREF(inst);
Py_XDECREF(init);
Py_XDECREF(args);
return NULL;
}
static PyObject *
CCL_repr(self)
PyExtensionClass *self;
{
PyObject *s;
int l;
char *buf, p[64];
sprintf(p,"%p",self);
l=strlen(self->ob_type->tp_name)+strlen(p);
UNLESS(s=PyString_FromStringAndSize(NULL,l+22)) return NULL;
buf=PyString_AsString(s);
sprintf(buf,"<extension class %s at %p>",self->tp_name);
return s;
}
static PyTypeObject CCLtype_class = {
PyObject_HEAD_INIT(&PyType_Type)
0, /*ob_size*/
"C Class Class", /*tp_name*/
sizeof(PyExtensionClass), /*tp_basicsize*/
0, /*tp_itemsize*/
/* methods */
(destructor)CCL_dealloc, /*tp_dealloc*/
(printfunc)0, /*tp_print*/
(getattrfunc)CCL_getattr, /*tp_getattr*/
(setattrfunc)CCL_setattr, /*tp_setattr*/
(cmpfunc)0, /*tp_compare*/
(reprfunc)CCL_repr, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
(hashfunc)0, /*tp_hash*/
(ternaryfunc)CCL_call, /*tp_call*/
(reprfunc)0, /*tp_str*/
/* Space for future expansion */
0L,0L,0L,0L,
"Class of C classes" /* Documentation string */
};
/* End of code for ExtensionClass objects */
/* -------------------------------------------------------- */
/* subclassing code: */
static int
subclass_setattr(PyObject *self, char *name, PyObject *v)
{
PyObject *m=0, *et, *ev, *etb;
UNLESS(m=PyObject_GetAttrString(self,"__setattr__"))
goto default_setattr;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==setattr_by_name)
{
UNLESS(-1 != ((CMethod*)m)->type->tp_setattr(self,name,v))
goto dictionary_setattr;
return 0;
}
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"sO",name,v)) return -1;
Py_DECREF(m);
return 0;
dictionary_setattr:
Py_XDECREF(m);
PyErr_Fetch(&et, &ev, &etb);
if(et==PyExc_AttributeError)
{
char *s;
if(ev && PyString_Check(ev) && (s=PyString_AsString(ev)) &&
strcmp(s,name)==0)
{
Py_XDECREF(et);
Py_XDECREF(ev);
Py_XDECREF(etb);
et=0;
}
}
if(et)
{
PyErr_Restore(et,ev,etb);
return -1;
}
default_setattr:
UNLESS(-1 != PyMapping_SetItemString(INSTANCE_DICT(self),name,v))
return -1;
return 0;
}
static int
subclass_compare(PyObject *self, PyObject *v)
{
PyObject *m;
long r;
UNLESS(m=PyObject_GetAttrString(self,"__cmp__")) return -1;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==compare_by_name)
r=((CMethod*)m)->type->tp_compare(self,v);
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"O",v)) return -1;
r=PyInt_AsLong(m);
}
Py_DECREF(m);
return r;
}
static long
subclass_hash(PyObject *self)
{
PyObject *m;
long r;
UNLESS(m=PyObject_GetAttrString(self,"__hash__")) return -1;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==hash_by_name)
r=((CMethod*)m)->type->tp_hash(self);
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"")) return -1;
r=PyInt_AsLong(m);
}
Py_DECREF(m);
return r;
}
static PyObject *
subclass_repr(PyObject *self)
{
PyObject *m;
UNLESS(m=PyObject_GetAttrString(self,"__repr__"))
{
int l;
char *buf, p[64];
PyErr_Clear();
sprintf(p,"%p",self);
l=strlen(self->ob_type->tp_name)+strlen(p);
UNLESS(m=PyString_FromStringAndSize(NULL,l+15)) return NULL;
buf=PyString_AsString(m);
sprintf(buf,"<%s instance at %s>",self->ob_type->tp_name,p);
return m;
}
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==repr_by_name)
{
UNLESS_ASSIGN(m,((CMethod*)m)->type->tp_repr(self)) return NULL;
}
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"")) return NULL;
}
return m;
}
static PyObject *
subclass_call(PyObject *self, PyObject *args, PyObject *kw)
{
PyObject *m;
UNLESS(m=PyObject_GetAttrString(self,"__call__")) return NULL;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==(PyCFunction)call_by_name)
{
UNLESS_ASSIGN(m,((CMethod*)m)->type->tp_call(self,args,kw)) return NULL;
}
else
{
UNLESS_ASSIGN(m,PyEval_CallObjectWithKeywords(m,args,kw)) return NULL;
}
return m;
}
static PyObject *
subclass_str(PyObject *self)
{
PyObject *m;
UNLESS(m=PyObject_GetAttrString(self,"__str__"))
{
PyErr_Clear();
return subclass_repr(self);
}
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==str_by_name)
{
UNLESS_ASSIGN(m,((CMethod*)m)->type->tp_str(self)) return NULL;
}
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"")) return NULL;
}
return m;
}
#define BINSUB(M,N,A) \
static PyObject * \
subclass_ ## M(PyObject *self, PyObject *v) \
{ \
PyObject *m; \
UNLESS(m=PyObject_GetAttrString(self,"__" # M "__")) return NULL; \
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==M ## _by_name) \
{ \
UNLESS_ASSIGN(m,PyNumber_ ## A(self,v)) \
return NULL; \
} \
else \
{ \
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"O",v)) return NULL; \
} \
return m; \
}
BINSUB(add,add,Add);
BINSUB(subtract,sub,Subtract);
BINSUB(multiply,mul,Multiply);
BINSUB(divide,div,Divide);
BINSUB(remainder,mod,Remainder);
static PyObject *
subclass_power(PyObject *self, PyObject *v, PyObject *w)
{
PyObject *m;
UNLESS(m=PyObject_GetAttrString(self,"__pow__")) return NULL;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==power_by_name)
{
UNLESS_ASSIGN(m,((CMethod*)m)->type->tp_as_number->nb_power(self,v,w))
return NULL;
}
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"OO",v,w)) return NULL;
}
return m;
}
BINSUB(divmod,divmod,Divmod);
BINSUB(lshift,lshift,Lshift);
BINSUB(rshift,rshift,Rshift);
BINSUB(and,and,And);
BINSUB(or,or,Or);
BINSUB(xor,xor,Xor);
static int
subclass_coerce(PyObject **self, PyObject **v)
{
PyObject *m;
int r;
UNLESS(m=PyObject_GetAttrString(*self,"__coerce__")) return -1;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==coerce_by_name)
r=((CMethod*)m)->type->tp_as_number->nb_coerce(self,v);
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"OO",*self,*v)) return -1;
if(m==Py_None) r=-1;
else
{
PyArg_ParseTuple(m,"O",v);
Py_INCREF(*self);
Py_INCREF(*v);
r=0;
}
}
Py_DECREF(m);
return r;
}
#define UNSUB(M,N) \
static PyObject * \
subclass_ ## M(PyObject *self) \
{ \
PyObject *m; \
UNLESS(m=PyObject_GetAttrString(self,"__" # M "__")) return NULL; \
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==M ## _by_name) \
{ \
UNLESS_ASSIGN(m,((CMethod*)m)->type->tp_as_number->nb_ ## M(self)) \
return NULL; \
} \
else \
{ \
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"O")) return NULL; \
} \
return m; \
}
UNSUB(negative, neg)
UNSUB(positive, pos)
UNSUB(absolute, abs)
static int
subclass_nonzero(PyObject *self)
{
PyObject *m;
long r;
UNLESS(m=PyObject_GetAttrString(self,"__nonzero__")) return -1;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==nonzero_by_name)
r=((CMethod*)m)->type->tp_as_number->nb_nonzero(self);
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"")) return -1;
r=PyInt_AsLong(m);
}
Py_DECREF(m);
return r;
}
UNSUB(invert, inv)
UNSUB(int, int)
UNSUB(long, long)
UNSUB(float, float)
UNSUB(oct, oct)
UNSUB(hex, hex)
#undef UNSUB
#undef BINSUB
static PyNumberMethods subclass_as_number = {
(binaryfunc)subclass_add, /*nb_add*/
(binaryfunc)subclass_subtract, /*nb_subtract*/
(binaryfunc)subclass_multiply, /*nb_multiply*/
(binaryfunc)subclass_divide, /*nb_divide*/
(binaryfunc)subclass_remainder, /*nb_remainder*/
(binaryfunc)subclass_divmod, /*nb_divmod*/
(ternaryfunc)subclass_power, /*nb_power*/
(unaryfunc)subclass_negative, /*nb_negative*/
(unaryfunc)subclass_positive, /*nb_positive*/
(unaryfunc)subclass_absolute, /*nb_absolute*/
(inquiry)subclass_nonzero, /*nb_nonzero*/
(unaryfunc)subclass_invert, /*nb_invert*/
(binaryfunc)subclass_lshift, /*nb_lshift*/
(binaryfunc)subclass_rshift, /*nb_rshift*/
(binaryfunc)subclass_and, /*nb_and*/
(binaryfunc)subclass_xor, /*nb_xor*/
(binaryfunc)subclass_or, /*nb_or*/
(coercion)subclass_coerce, /*nb_coerce*/
(unaryfunc)subclass_int, /*nb_int*/
(unaryfunc)subclass_long, /*nb_long*/
(unaryfunc)subclass_float, /*nb_float*/
(unaryfunc)subclass_oct, /*nb_oct*/
(unaryfunc)subclass_hex, /*nb_hex*/
};
static long
subclass_length(PyObject *self)
{
PyObject *m;
long r;
PyExtensionClass *t;
UNLESS(m=PyObject_GetAttrString(self,"__len__")) return -1;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==length_by_name)
{
t=(PyExtensionClass*)((CMethod*)m)->type;
Py_DECREF(m);
if(t->tp_as_sequence)
return t->tp_as_sequence->sq_length(self);
else
return t->tp_as_mapping->mp_length(self);
}
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"")) return -1;
r=PyInt_AsLong(m);
}
Py_DECREF(m);
return r;
}
static PyObject *
subclass_item(PyObject *self, int index)
{
PyObject *m;
PyExtensionClass *t;
UNLESS(m=PyObject_GetAttrString(self,"__getitem__")) return NULL;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==getitem_by_name)
{
t=(PyExtensionClass*)((CMethod*)m)->type;
if(t->tp_as_sequence && t->tp_as_sequence->sq_item)
{
Py_DECREF(m);
return t->tp_as_sequence->sq_item(self,index);
}
}
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"i",index)) goto err;
return m;
err:
Py_DECREF(m);
return NULL;
}
static long
subclass_ass_item(PyObject *self, int index, PyObject *v)
{
long r;
PyObject *m;
PyExtensionClass *t;
UNLESS(m=PyObject_GetAttrString(self,"__setitem__")) return -1;
if(m->ob_type==&CMethodType &&
((CMethod*)m)->meth==(PyCFunction)setitem_by_name)
{
t=(PyExtensionClass*)((CMethod*)m)->type;
if(t->tp_as_sequence && t->tp_as_sequence->sq_ass_item)
{
Py_DECREF(m);
return t->tp_as_sequence->sq_ass_item(self,index,v);
}
}
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"iO",index,v)) return -1;
r=PyInt_AsLong(m);
Py_DECREF(m);
return r;
err:
Py_DECREF(m);
return NULL;
}
static PyObject *
subclass_slice(PyObject *self, int i1, int i2)
{
PyObject *m;
UNLESS(m=PyObject_GetAttrString(self,"__getslice__")) return NULL;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==slice_by_name)
{
UNLESS_ASSIGN(m,((CMethod*)m)->type->tp_as_sequence->sq_slice(self,i1,i2))
return NULL;
}
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"ii",i1,i2)) return NULL;
}
return m;
}
static int
subclass_ass_slice(PyObject *self, int i1, int i2, PyObject *v)
{
PyObject *m;
long r;
UNLESS(m=PyObject_GetAttrString(self,"__setslice__")) return -1;
if(m->ob_type==&CMethodType &&
((CMethod*)m)->meth==(PyCFunction)ass_slice_by_name)
r=((CMethod*)m)->type->tp_as_sequence->sq_ass_slice(self,i1,i2,v);
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"iiO",i1,i2,v)) return -1;
r=PyInt_AsLong(m);
}
Py_DECREF(m);
return r;
}
static PyObject *
subclass_concat(PyObject *self, PyObject *v)
{
PyObject *m;
UNLESS(m=PyObject_GetAttrString(self,"__concat__"))
{ /* Maybe we should check for __add__ */
PyObject *am;
PyErr_Clear();
UNLESS(am=PyObject_GetAttrString(self,"__add__")) return NULL;
if(m=PyObject_GetAttrString(self,"__coerce__"))
{
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==coerce_by_name)
{
PyObject *x,*y;
x=self;
y=v;
if(0==((CMethod*)m)->type->tp_as_number->nb_coerce(&x,&y))
{
Py_DECREF(am);
if(x->ob_type->tp_as_number)
am=x->ob_type->tp_as_number->nb_add(x,y);
else
am=NULL;
Py_DECREF(m);
Py_DECREF(x);
Py_DECREF(y);
if(am) return am;
}
}
Py_DECREF(m);
}
Py_DECREF(am);
PyErr_SetString(PyExc_AttributeError,
"No __add__ or __concat__ methods, or maybe I'm just being stupid.");
return NULL;
}
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==concat_by_name)
{
UNLESS_ASSIGN(m,((CMethod*)m)->type->tp_as_sequence->sq_concat(self,v))
return NULL;
}
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"O",v)) return NULL;
}
return m;
}
static PyObject *
subclass_repeat(PyObject *self, int v)
{
PyObject *m;
UNLESS(m=PyObject_GetAttrString(self,"__repeat__")) return NULL;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==repeat_by_name)
{
UNLESS_ASSIGN(m,((CMethod*)m)->type->tp_as_sequence->sq_repeat(self,v))
return NULL;
}
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"i",v)) return NULL;
}
return m;
}
PySequenceMethods subclass_as_sequence = {
(inquiry)subclass_length, /*sq_length*/
(binaryfunc)subclass_concat, /*sq_concat*/
(intargfunc)subclass_repeat, /*sq_repeat*/
(intargfunc)subclass_item, /*sq_item*/
(intintargfunc)subclass_slice, /*sq_slice*/
(intobjargproc)subclass_ass_item, /*sq_ass_item*/
(intintobjargproc)subclass_ass_slice, /*sq_ass_slice*/
};
static PyObject *
subclass_subscript(PyObject *self, PyObject *key)
{
PyObject *m;
PyExtensionClass *t;
UNLESS(m=PyObject_GetAttrString(self,"__getitem__")) return NULL;
if(m->ob_type==&CMethodType &&
((CMethod*)m)->meth==(PyCFunction)getitem_by_name)
{
t=(PyExtensionClass*)((CMethod*)m)->type;
if(t->tp_as_mapping && t->tp_as_mapping->mp_subscript)
{
Py_DECREF(m);
return t->tp_as_mapping->mp_subscript(self,key);
}
}
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"O",key)) goto err;
return m;
err:
Py_DECREF(m);
return NULL;
}
static long
subclass_ass_subscript(PyObject *self, PyObject *index, PyObject *v)
{
long r;
PyObject *m;
PyExtensionClass *t;
UNLESS(m=PyObject_GetAttrString(self,"__setitem__")) return -1;
if(m->ob_type==&CMethodType &&
((CMethod*)m)->meth==(PyCFunction)setitem_by_name)
{
t=(PyExtensionClass*)((CMethod*)m)->type;
if(t->tp_as_sequence && t->tp_as_mapping->mp_ass_subscript)
{
Py_DECREF(m);
return t->tp_as_mapping->mp_ass_subscript(self,index,v);
}
}
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"OO",index,v)) return -1;
r=PyInt_AsLong(m);
Py_DECREF(m);
return r;
err:
Py_DECREF(m);
return NULL;
}
PyMappingMethods subclass_as_mapping = {
(inquiry)subclass_length, /*mp_length*/
(binaryfunc)subclass_subscript, /*mp_subscript*/
(objobjargproc)subclass_ass_subscript, /*mp_ass_subscript*/
};
static int
dealloc_base(PyObject *inst, PyExtensionClass* self)
{
int i,l;
PyObject *t;
l=PyTuple_Size(self->bases);
for(i=0; i < l; i++)
{
t=PyTuple_GET_ITEM(self->bases, i);
if(t->ob_type==(PyTypeObject*)&CCLtype)
{
if(((PyExtensionClass*)t)->bases)
{
if(dealloc_base(inst,(PyExtensionClass*)t)) return 1;
}
else
{
if(((PyExtensionClass*)t)->tp_dealloc)
{
((PyExtensionClass*)t)->tp_dealloc(inst);
return 1;
}
}
}
}
return 0;
}
static void
subclass_dealloc(PyObject *self)
{
PyObject *m, *t, *v, *tb;
PyErr_Fetch(&t,&v,&tb);
if(m=PyObject_GetAttrString(self,"__del__"))
PyObject_CallFunction(m,"");
PyErr_Clear();
Py_XDECREF(INSTANCE_DICT(self));
Py_DECREF(self->ob_type);
dealloc_base(self,(PyExtensionClass*)self->ob_type);
PyErr_Restore(t,v,tb);
}
static int
datafull_baseclasses(PyExtensionClass *type)
{
/* Find the number of classes that have data and return them.
There should be only one.
*/
int l, i, n=0;
PyObject *base;
typedef struct { PyObject_HEAD } Dataless;
l=PyTuple_Size(type->bases);
for(i=0; i < l; i++)
{
base=PyTuple_GET_ITEM(type->bases, i);
if(base->ob_type==(PyTypeObject*)&CCLtype)
{
if(((PyExtensionClass*)base->ob_type)->bases)
n+=datafull_baseclasses((PyExtensionClass*)base);
else
{
if(((PyExtensionClass*)base)->tp_basicsize > sizeof(Dataless) ||
((PyExtensionClass*)base)->tp_itemsize > 0)
n++;
}
}
}
return n;
}
static PyObject *
datafull_baseclass(PyExtensionClass *type)
{
/* Find the number of classes that have data and return them.
There should be only one.
*/
int l, i, n=0;
PyObject *base, *dbase;
l=PyTuple_Size(type->bases);
for(i=0; i < l; i++)
{
base=PyTuple_GET_ITEM(type->bases, i);
if(base->ob_type==(PyTypeObject*)&CCLtype)
{
if(((PyExtensionClass*)base->ob_type)->bases)
{
if(dbase=datafull_baseclass((PyExtensionClass*)base))
return dbase;
}
else
{
if(((PyExtensionClass*)base)->tp_basicsize > sizeof(Dataless) ||
((PyExtensionClass*)base)->tp_itemsize > 0)
return base;
}
}
}
return NULL;
}
static int
subclass_hasattr(PyExtensionClass *type, char *name)
{
PyObject *o;
if(o=CCL_getattr(type,name))
{
Py_DECREF(o);
return 1;
}
PyErr_Clear();
return 0;
}
static int
has_number_methods(PyExtensionClass *type)
{
return (subclass_hasattr(type,"__add__") ||
subclass_hasattr(type,"__sub__") ||
subclass_hasattr(type,"__mul__") ||
subclass_hasattr(type,"__div__") ||
subclass_hasattr(type,"__mod__") ||
subclass_hasattr(type,"__pow__") ||
subclass_hasattr(type,"__divmod__") ||
subclass_hasattr(type,"__lshift__") ||
subclass_hasattr(type,"__rshift__") ||
subclass_hasattr(type,"__and__") ||
subclass_hasattr(type,"__or__") ||
subclass_hasattr(type,"__xor__") ||
subclass_hasattr(type,"__coerce__") ||
subclass_hasattr(type,"__neg__") ||
subclass_hasattr(type,"__pos__") ||
subclass_hasattr(type,"__abs__") ||
subclass_hasattr(type,"__nonzero__") ||
subclass_hasattr(type,"__inv__") ||
subclass_hasattr(type,"__int__") ||
subclass_hasattr(type,"__long__") ||
subclass_hasattr(type,"__float__") ||
subclass_hasattr(type,"__oct__") ||
subclass_hasattr(type,"__hex__")
);
}
static int
has_collection_methods(PyExtensionClass *type)
{
return (subclass_hasattr(type,"__getitem__") ||
subclass_hasattr(type,"__setitem__") ||
subclass_hasattr(type,"__getslice__") ||
subclass_hasattr(type,"__setslice__") ||
subclass_hasattr(type,"__concat__") ||
subclass_hasattr(type,"__repeat__") ||
subclass_hasattr(type,"__len__")
);
}
/* Constructor for building subclasses of C classes.
That is, we want to build a C class object that described a
subclass of a built-in type.
*/
static PyObject *
subclass__init__(self,args)
PyExtensionClass *self;
PyObject *args;
{
PyObject *bases, *methods;
PyExtensionClass *type;
char *name;
int dynamic=1;
UNLESS(PyArg_Parse(args,"(sOO)", &name, &bases, &methods)) return NULL;
UNLESS(PyTuple_Check(bases) && PyTuple_Size(bases))
{
PyErr_SetString
(PyExc_TypeError,
"second argument must be a tuple of 1 or more base classes");
}
self->bases=bases;
Py_INCREF(bases);
if(datafull_baseclasses(self) > 1)
{
PyErr_SetString(PyExc_TypeError, "too many datafull base classes");
return NULL;
}
UNLESS(type=(PyExtensionClass *)datafull_baseclass(self))
type=(PyExtensionClass*)PyTuple_GET_ITEM(bases, 0);
self->tp_name=name;
self->bases=bases;
Py_INCREF(methods);
self->class_dictionary=methods;
#define copy_member(M) self->M=type->M
copy_member(ob_size);
copy_member(class_flags);
if(type->bases)
copy_member(tp_basicsize);
else
{
self->tp_basicsize=type->tp_basicsize/sizeof(PyObject*)*sizeof(PyObject*);
if(self->tp_basicsize < type->tp_basicsize)
self->tp_basicsize += sizeof(PyObject*); /* To align on PyObject */
self->tp_basicsize += sizeof(PyObject*); /* For instance dictionary */
}
copy_member(tp_itemsize);
copy_member(tp_print);
copy_member(tp_getattr);
self->tp_dealloc=subclass_dealloc;
self->tp_setattr=subclass_setattr;
#define subclass_set(OP,N) \
self->tp_ ##OP = subclass_ ##OP;
subclass_set(compare,cmp);
subclass_set(repr,repr);
if(subclass_hasattr(self,"__bind_to_object__") &&
subclass_hasattr(self,"__call__"))
self->class_flags |= EXTENSIONCLASS_BINDABLE_FLAG;
if(dynamic || has_number_methods(self))
self->tp_as_number=&subclass_as_number;
else
self->tp_as_number=NULL;
if(dynamic || has_collection_methods(self))
{
self->tp_as_sequence=&subclass_as_sequence;
self->tp_as_mapping=&subclass_as_mapping;
}
else
{
self->tp_as_sequence=NULL;
self->tp_as_sequence=NULL;
}
subclass_set(hash,hash);
subclass_set(call,call);
subclass_set(str,str);
self->tp_doc=0;
Py_INCREF(Py_None);
return Py_None;
}
struct PyMethodDef ExtensionClass_methods[] = {
{"__init__",(PyCFunction)subclass__init__,0,""},
{NULL, NULL} /* sentinel */
};
static PyExtensionClass CCLtype = {
PyObject_HEAD_INIT(&CCLtype_class)
0, /*ob_size*/
"C Class", /*tp_name*/
sizeof(PyExtensionClass), /*tp_basicsize*/
0, /*tp_itemsize*/
/* methods */
(destructor)CCL_dealloc, /*tp_dealloc*/
(printfunc)0, /*tp_print*/
(getattrfunc)CCL_getattr, /*tp_getattr*/
(setattrfunc)CCL_setattr, /*tp_setattr*/
(cmpfunc)0, /*tp_compare*/
(reprfunc)CCL_repr, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
(hashfunc)0, /*tp_hash*/
(ternaryfunc)CCL_call, /*tp_call*/
(reprfunc)0, /*tp_str*/
/* Space for future expansion */
0L,0L,0L,0L,
"C classes", /* Documentation string */
METHOD_CHAIN(ExtensionClass_methods)
};
static PyExtensionClass Basetype = {
PyObject_HEAD_INIT(&PyType_Type)
0, /*ob_size*/
"Base", /*tp_name*/
sizeof(Dataless), /*tp_basicsize*/
0, /*tp_itemsize*/
/* methods */
(destructor)0, /*tp_dealloc*/
(printfunc)0, /*tp_print*/
(getattrfunc)ExtensionClass_FindInstanceAttribute, /*tp_getattr*/
(setattrfunc)0, /*tp_setattr*/
(cmpfunc)0, /*tp_compare*/
(reprfunc)0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
(hashfunc)0, /*tp_hash*/
(ternaryfunc)0, /*tp_call*/
(reprfunc)0, /*tp_str*/
/* Space for future expansion */
0L,0L,0L,0L,
"Base -- a do nothing base class\n"
"\n"
"A trivial base class that doesn't have any inheritable\n"
"attributes but that can be listed first in the set of superclasses \n"
"of a new subclass. \n",
{NULL,NULL}
};
PyObject *
MetaTypeUndefinedMethod()
{
PyErr_SetString(PyExc_TypeError,
"undefined operation on partially numeric PyObject");
return NULL;
}
/* List of methods defined in the module */
static struct PyMethodDef CC_methods[] = {
{NULL, NULL} /* sentinel */
};
void
initExtensionClass()
{
PyObject *m, *d;
/* Create the module and add the functions */
m = Py_InitModule4("ExtensionClass", CC_methods,
ExtensionClass_module_documentation,
(PyObject*)NULL,PYTHON_API_VERSION);
/* Add some symbolic constants to the module */
d = PyModule_GetDict(m);
initializeBaseExtensionClass(&CCLtype);
PyDict_SetItemString(d, "ExtensionClassType", (PyObject*)&CCLtype);
initializeBaseExtensionClass(&Basetype);
PyDict_SetItemString(d, "Base", (PyObject*)&Basetype);
/* Check for errors */
if (PyErr_Occurred())
Py_FatalError("can't initialize module ExtensionClass");
}
lib/Components/ExtensionClass/ExtensionClass.h 0 → 100644
View file @ 3600c6a7
/*
$Id: ExtensionClass.h,v 1.1 1996/10/22 22:25:43 jim Exp $
Extension Class Definitions
Copyright
Copyright 1996 Digital Creations, L.C., 910 Princess Anne
Street, Suite 300, Fredericksburg, Virginia 22401 U.S.A. All
rights reserved. Copyright in this software is owned by DCLC,
unless otherwise indicated. Permission to use, copy and
distribute this software is hereby granted, provided that the
above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear. Note that
any product, process or technology described in this software
may be the subject of other Intellectual Property rights
reserved by Digital Creations, L.C. and are not licensed
hereunder.
Trademarks
Digital Creations & DCLC, are trademarks of Digital Creations, L.C..
All other trademarks are owned by their respective companies.
No Warranty
The software is provided "as is" without warranty of any kind,
either express or implied, including, but not limited to, the
implied warranties of merchantability, fitness for a particular
purpose, or non-infringement. This software could include
technical inaccuracies or typographical errors. Changes are
periodically made to the software; these changes will be
incorporated in new editions of the software. DCLC may make
improvements and/or changes in this software at any time
without notice.
Limitation Of Liability
In no event will DCLC be liable for direct, indirect, special,
incidental, economic, cover, or consequential damages arising
out of the use of or inability to use this software even if
advised of the possibility of such damages. Some states do not
allow the exclusion or limitation of implied warranties or
limitation of liability for incidental or consequential
damages, so the above limitation or exclusion may not apply to
you.
If you have questions regarding this software,
contact:
Jim Fulton, jim@digicool.com
Digital Creations L.C.
(540) 371-6909
$Log: ExtensionClass.h,v $
Revision 1.1 1996/10/22 22:25:43 jim
*** empty log message ***
*/
#ifndef EXTENSIONCLASS_H
#define EXTENSIONCLASS_H
#include "Python.h"
#include "import.h"
/* Declarations for objects of type ExtensionClass */
typedef struct {
PyObject_VAR_HEAD
char *tp_name; /* For printing */
int tp_basicsize, tp_itemsize; /* For allocation */
/* Methods to implement standard operations */
destructor tp_dealloc;
printfunc tp_print;
getattrfunc tp_getattr;
setattrfunc tp_setattr;
cmpfunc tp_compare;
reprfunc tp_repr;
/* Method suites for standard classes */
PyNumberMethods *tp_as_number;
PySequenceMethods *tp_as_sequence;
PyMappingMethods *tp_as_mapping;
/* More standard operations (at end for binary compatibility) */
hashfunc tp_hash;
ternaryfunc tp_call;
reprfunc tp_str;
long tp_xxx1; /*getattrofunc tp_getattro;*/
long tp_xxx2; /*setattrofunc tp_setattro;*/
/* Space for future expansion */
long tp_xxx3;
long tp_xxx4;
char *tp_doc; /* Documentation string */
/* Here's the juicy stuff */
PyMethodChain methods;
PyObject *class_dictionary;
PyObject *bases;
long class_flags;
#define EXTENSIONCLASS_DYNAMIC_FLAG 1
#define EXTENSIONCLASS_BINDABLE_FLAG 2
#ifdef COUNT_ALLOCS
/* these must be last */
int tp_alloc;
int tp_free;
int tp_maxalloc;
struct _typeobject *tp_next;
#endif
} PyExtensionClass;
/* Don't look at this. :-) */
#define Py_FindMethod(M,SELF,NAME) \
((getattrfunc)(SELF->ob_type->ob_type->tp_getattr(SELF->ob_type,"."))) \
(SELF,NAME)
#define Py_FindAttrString(SELF,NAME) \
((getattrfunc)(SELF->ob_type->ob_type->tp_getattr(SELF->ob_type,"."))) \
(SELF,NAME)
#define PyExtensionClass_Export(D,N,T) { \
PyObject *_ExtensionClass_module; \
if(_ExtensionClass_module=PyImport_ImportModule("ExtensionClass")) { \
if(PyObject_CallMethod(_ExtensionClass_module, \
"ExtensionClassType", "Oi", &T, 42)) \
PyMapping_SetItemString(D,N,(PyObject*)&T); \
Py_DECREF(_ExtensionClass_module); \
} \
}
#define METHOD_CHAIN(DEF) { DEF, NULL }
#define CHECK_FOR_ERRORS(MESS) \
if(PyErr_Occurred()) { \
PyObject *__sys_exc_type, *__sys_exc_value, *__sys_exc_traceback; \
PyErr_Fetch( &__sys_exc_type, &__sys_exc_value, &__sys_exc_traceback); \
fprintf(stderr, # MESS ":\n\t"); \
PyObject_Print(__sys_exc_type, stderr,0); \
fprintf(stderr,", "); \
PyObject_Print(__sys_exc_value, stderr,0); \
fprintf(stderr,"\n"); \
fflush(stderr); \
Py_FatalError(# MESS); \
}
#endif
lib/Components/ExtensionClass/MultiMapping.c 0 → 100644
View file @ 3600c6a7
/*
$Id: MultiMapping.c,v 1.1 1996/10/22 22:27:42 jim Exp $
Sample extension class program that implements multi-mapping objects.
Copyright
Copyright 1996 Digital Creations, L.C., 910 Princess Anne
Street, Suite 300, Fredericksburg, Virginia 22401 U.S.A. All
rights reserved. Copyright in this software is owned by DCLC,
unless otherwise indicated. Permission to use, copy and
distribute this software is hereby granted, provided that the
above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear. Note that
any product, process or technology described in this software
may be the subject of other Intellectual Property rights
reserved by Digital Creations, L.C. and are not licensed
hereunder.
Trademarks
Digital Creations & DCLC, are trademarks of Digital Creations, L.C..
All other trademarks are owned by their respective companies.
No Warranty
The software is provided "as is" without warranty of any kind,
either express or implied, including, but not limited to, the
implied warranties of merchantability, fitness for a particular
purpose, or non-infringement. This software could include
technical inaccuracies or typographical errors. Changes are
periodically made to the software; these changes will be
incorporated in new editions of the software. DCLC may make
improvements and/or changes in this software at any time
without notice.
Limitation Of Liability
In no event will DCLC be liable for direct, indirect, special,
incidental, economic, cover, or consequential damages arising
out of the use of or inability to use this software even if
advised of the possibility of such damages. Some states do not
allow the exclusion or limitation of implied warranties or
limitation of liability for incidental or consequential
damages, so the above limitation or exclusion may not apply to
you.
If you have questions regarding this software,
contact:
Jim Fulton, jim@digicool.com
Digital Creations L.C.
(540) 371-6909
Full description
$Log: MultiMapping.c,v $
Revision 1.1 1996/10/22 22:27:42 jim
*** empty log message ***
*/
#include "Python.h"
#include "ExtensionClass.h"
#define UNLESS(E) if(!(E))
typedef struct {
PyObject_HEAD
PyObject *data;
} MMobject;
staticforward PyExtensionClass MMtype;
static PyObject *
MM_push(self, args)
MMobject *self;
PyObject *args;
{
PyObject *src;
UNLESS(PyArg_ParseTuple(args, "O", &src)) return NULL;
UNLESS(-1 != PyList_Append(self->data,src)) return NULL;
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *
MM_pop(self, args)
MMobject *self;
PyObject *args;
{
long l;
PyObject *r;
static PyObject *emptyList=0;
UNLESS(emptyList) UNLESS(emptyList=PyList_New(0)) return NULL;
UNLESS(PyArg_ParseTuple(args, "")) return NULL;
UNLESS(-1 != (l=PyList_Size(self->data))) return NULL;
l--;
UNLESS(r=PySequence_GetItem(self->data,l)) return NULL;
UNLESS(-1 != PyList_SetSlice(self->data,l,l+1,emptyList)) goto err;
return r;
err:
Py_DECREF(r);
return NULL;
}
static PyObject *
MM__init__(self, args)
MMobject *self;
PyObject *args;
{
UNLESS(PyArg_ParseTuple(args, "")) return NULL;
UNLESS(self->data=PyList_New(0)) goto err;
Py_INCREF(Py_None);
return Py_None;
err:
Py_DECREF(self);
return NULL;
}
static struct PyMethodDef MM_methods[] = {
{"__init__", (PyCFunction)MM__init__, 1,
"__init__() -- Create a new empty multi-mapping"},
{"push", (PyCFunction) MM_push, 1,
"push(mapping_object) -- Add a data source"},
{"pop", (PyCFunction) MM_pop, 1,
"pop() -- Remove and return the last data source added"},
{NULL, NULL} /* sentinel */
};
static void
MM_dealloc(self)
MMobject *self;
{
Py_XDECREF(self->data);
PyMem_DEL(self);
}
static PyObject *
MM_getattr(self, name)
MMobject *self;
char *name;
{
return Py_FindMethod(MM_methods, (PyObject *)self, name);
}
static int
MM_length(self)
MMobject *self;
{
long l=0, el, i;
PyObject *e=0;
UNLESS(-1 != (i=PyList_Size(self->data))) return -1;
while(--i >= 0)
{
e=PyList_GetItem(self->data,i);
UNLESS(-1 != (el=PyObject_Length(e))) return -1;
l+=el;
}
return l;
}
static PyObject *
MM_subscript(self, key)
MMobject *self;
PyObject *key;
{
long i;
PyObject *e;
UNLESS(-1 != (i=PyList_Size(self->data))) return NULL;
while(--i >= 0)
{
e=PyList_GetItem(self->data,i);
if(e=PyObject_GetItem(e,key)) return e;
PyErr_Clear();
}
PyErr_SetObject(PyExc_KeyError,key);
return NULL;
}
static PyMappingMethods MM_as_mapping = {
(inquiry)MM_length, /*mp_length*/
(binaryfunc)MM_subscript, /*mp_subscript*/
(objobjargproc)NULL, /*mp_ass_subscript*/
};
/* -------------------------------------------------------- */
static char MMtype__doc__[] =
"MultiMapping -- Combine multiple mapping objects for lookup"
;
static PyExtensionClass MMtype = {
PyObject_HEAD_INIT(&PyType_Type)
0, /*ob_size*/
"MultMapping", /*tp_name*/
sizeof(MMobject), /*tp_basicsize*/
0, /*tp_itemsize*/
/* methods */
(destructor)MM_dealloc, /*tp_dealloc*/
(printfunc)0, /*tp_print*/
(getattrfunc)MM_getattr, /*tp_getattr*/
(setattrfunc)0, /*tp_setattr*/
(cmpfunc)0, /*tp_compare*/
(reprfunc)0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
&MM_as_mapping, /*tp_as_mapping*/
(hashfunc)0, /*tp_hash*/
(ternaryfunc)0, /*tp_call*/
(reprfunc)0, /*tp_str*/
/* Space for future expansion */
0L,0L,0L,0L,
MMtype__doc__, /* Documentation string */
METHOD_CHAIN(MM_methods)
};
static struct PyMethodDef MultiMapping_methods[] = {
{NULL, NULL} /* sentinel */
};
void
initMultiMapping()
{
PyObject *m, *d;
m = Py_InitModule4("MultiMapping", MultiMapping_methods,
"MultiMapping -- Wrap multiple mapping objects for lookup",
(PyObject*)NULL,PYTHON_API_VERSION);
d = PyModule_GetDict(m);
PyExtensionClass_Export(d,"MultiMapping",MMtype);
if (PyErr_Occurred()) Py_FatalError("can't initialize module MultiMapping");
}
lib/Components/ExtensionClass/src/ExtensionClass.c 0 → 100644
View file @ 3600c6a7
/*
$Id: ExtensionClass.c,v 1.1 1996/10/22 22:26:08 jim Exp $
Extension Class
Copyright
Copyright 1996 Digital Creations, L.C., 910 Princess Anne
Street, Suite 300, Fredericksburg, Virginia 22401 U.S.A. All
rights reserved. Copyright in this software is owned by DCLC,
unless otherwise indicated. Permission to use, copy and
distribute this software is hereby granted, provided that the
above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear. Note that
any product, process or technology described in this software
may be the subject of other Intellectual Property rights
reserved by Digital Creations, L.C. and are not licensed
hereunder.
Trademarks
Digital Creations & DCLC, are trademarks of Digital Creations, L.C..
All other trademarks are owned by their respective companies.
No Warranty
The software is provided "as is" without warranty of any kind,
either express or implied, including, but not limited to, the
implied warranties of merchantability, fitness for a particular
purpose, or non-infringement. This software could include
technical inaccuracies or typographical errors. Changes are
periodically made to the software; these changes will be
incorporated in new editions of the software. DCLC may make
improvements and/or changes in this software at any time
without notice.
Limitation Of Liability
In no event will DCLC be liable for direct, indirect, special,
incidental, economic, cover, or consequential damages arising
out of the use of or inability to use this software even if
advised of the possibility of such damages. Some states do not
allow the exclusion or limitation of implied warranties or
limitation of liability for incidental or consequential
damages, so the above limitation or exclusion may not apply to
you.
If you have questions regarding this software,
contact:
Jim Fulton, jim@digicool.com
Digital Creations L.C.
(540) 371-6909
$Log: ExtensionClass.c,v $
Revision 1.1 1996/10/22 22:26:08 jim
*** empty log message ***
*/
static char ExtensionClass_module_documentation[] =
"ExtensionClass - Classes implemented in c\n"
"\n"
"Built-in C classes are like Built-in types except that\n"
"they provide some of the behavior of Python classes:\n"
"\n"
" - They provide access to unbound methods,\n"
" - They can be called to create instances.\n"
"\n"
"$Id: ExtensionClass.c,v 1.1 1996/10/22 22:26:08 jim Exp $\n"
;
#include "Python.h"
#define ASSIGN(V,E) {PyObject *__e; __e=(E); Py_XDECREF(V); (V)=__e;}
#define UNLESS(E) if(!(E))
#define UNLESS_ASSIGN(V,E) ASSIGN(V,E) UNLESS(V)
#define INSTANCE_DICT(inst) \
*(((PyObject**)inst) + (inst->ob_type->tp_basicsize/sizeof(PyObject*) - 1))
typedef struct { PyObject_HEAD } Dataless;
/* Declarations for objects of type ExtensionClass */
#include "ExtensionClass.h"
staticforward PyExtensionClass CCLtype;
/* CMethod objects: */
typedef struct {
PyObject_HEAD
PyTypeObject *type;
PyObject *self;
char *name;
PyCFunction meth;
int flags;
char *doc;
} CMethod;
staticforward PyTypeObject CMethodType;
static CMethod *
newCMethod(PyTypeObject *type,
char *name, PyCFunction meth, int flags, char *doc)
{
CMethod *self;
UNLESS(self = PyObject_NEW(CMethod, &CMethodType)) return NULL;
Py_INCREF(type);
self->type=type;
self->self=NULL;
self->name=name;
self->meth=meth;
self->flags=flags;
self->doc=doc;
return self;
}
static CMethod *
bindCMethod(CMethod *m, PyObject *inst)
{
CMethod *self;
UNLESS(self = PyObject_NEW(CMethod, &CMethodType)) return NULL;
Py_INCREF(inst);
Py_INCREF(m->type);
self->type=m->type;
self->self=inst;
self->name=m->name;
self->meth=m->meth;
self->flags=m->flags;
self->doc=m->doc;
return self;
}
static void
CMethod_dealloc(self)
CMethod *self;
{
Py_DECREF(self->type);
Py_XDECREF(self->self);
PyMem_DEL(self);
}
static PyObject *
call_cmethod(self, inst, args, kw)
CMethod *self;
PyObject *inst;
PyObject *args;
PyObject *kw;
{
if (!(self->flags & METH_VARARGS)) {
int size = PyTuple_Size(args);
if (size == 1)
args = PyTuple_GET_ITEM(args, 0);
else if (size == 0)
args = NULL;
}
if (self->flags & METH_KEYWORDS)
return (*(PyCFunctionWithKeywords)self->meth)(inst, args, kw);
else
{
if (kw != NULL && PyDict_Size(kw) != 0)
{
PyErr_SetString(PyExc_TypeError,
"this function takes no keyword arguments");
return NULL;
}
return (*self->meth)(inst, args);
}
}
static int
CMethod_issubclass(PyExtensionClass *sub, PyExtensionClass *type)
{
int i,l;
PyObject *t;
if(! sub->bases) return 0;
l=PyTuple_Size(sub->bases);
for(i=0; i < l; i++)
{
t=PyTuple_GET_ITEM(sub->bases, i);
if(t==(PyObject*)type) return 1;
if(t->ob_type==(PyTypeObject*)&CCLtype
&& ((PyExtensionClass*)t)->bases
&& CMethod_issubclass((PyExtensionClass*)t,type)
) return 1;
}
return 0;
}
static PyObject *
CMethod_call(self,args,kw)
CMethod *self;
PyObject *args;
PyObject *kw;
{
int size;
char *buf;
PyObject *s;
if(self->self) return call_cmethod(self,self->self,args,kw);
if((size=PyTuple_Size(args)) > 0)
{
PyObject *first=0;
UNLESS(first=PyTuple_GET_ITEM(args, 0)) return NULL;
if(first->ob_type==self->type
||
(first->ob_type->ob_type==(PyTypeObject*)&CCLtype
&&
CMethod_issubclass((PyExtensionClass *)(first->ob_type),
(PyExtensionClass *)(self->type))
)
);
{
PyObject *rest=0;
UNLESS(rest=PySequence_GetSlice(args,1,size)) return NULL;
return call_cmethod(self,first,rest,kw);
}
}
/* Call of unbound method without instance argument */
size=strlen(self->type->tp_name);
UNLESS(s=PyString_FromStringAndSize(NULL,size+48)) return NULL;
buf=PyString_AsString(s);
sprintf(buf,
"unbound C method must be called with %s 1st argument",
self->type->tp_name);
PyErr_SetObject(PyExc_TypeError,s);
Py_DECREF(s);
return NULL;
}
static PyObject *
CMethod_getattr(self,name)
CMethod *self;
char *name;
{
PyObject *r;
if(strcmp(name,'__name__')==0 || strcmp(name,'func_name')==0 )
return PyString_FromString(self->name);
if(strcmp(name,'func_code')==0 ||
strcmp(name,'im_func')==0)
{
Py_INCREF(self);
return (PyObject *)self;
}
if(strcmp(name,'__doc__')==0 ||
strcmp(name,'func_doc')==0 ||
strcmp(name,'func_doc')==0)
{
if(self->doc)
return PyString_FromString(self->doc);
else
return PyString_FromString("");
}
if(strcmp(name,'im_class')==0)
{
Py_INCREF(self->type);
return (PyObject *)self->type;
}
if(strcmp(name,'im_self')==0)
{
if(self->self) r=self->self;
else r=Py_None;
Py_INCREF(r);
return r;
}
}
static PyTypeObject CMethodType = {
PyObject_HEAD_INIT(&PyType_Type)
0, /*ob_size*/
"CMethod", /*tp_name*/
sizeof(CMethod), /*tp_basicsize*/
0, /*tp_itemsize*/
/* methods */
(destructor)CMethod_dealloc, /*tp_dealloc*/
(printfunc)0, /*tp_print*/
(getattrfunc)0, /*tp_getattr*/
(setattrfunc)0, /*tp_setattr*/
(cmpfunc)0, /*tp_compare*/
(reprfunc)0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
(hashfunc)0, /*tp_hash*/
(ternaryfunc)CMethod_call, /*tp_call*/
(reprfunc)0, /*tp_str*/
/* Space for future expansion */
0L,0L,0L,0L,
"Storage manager for unbound C function PyObject data"
/* Documentation string */
};
/* Pmethod objects: */
typedef struct {
PyObject_HEAD
PyTypeObject *type;
PyObject *self;
PyObject *meth;
} Pmethod;
staticforward PyTypeObject PmethodType;
static Pmethod *
newPmethod(PyTypeObject *type, PyObject *meth)
{
Pmethod *self;
UNLESS(self = PyObject_NEW(Pmethod, &PmethodType)) return NULL;
Py_INCREF(type);
Py_INCREF(meth);
self->type=type;
self->self=NULL;
self->meth=meth;
return self;
}
static Pmethod *
bindPmethod(Pmethod *m, PyObject *inst)
{
Pmethod *self;
UNLESS(self = PyObject_NEW(Pmethod, &PmethodType)) return NULL;
Py_INCREF(inst);
Py_INCREF(m->type);
self->type=m->type;
self->self=inst;
self->meth=m->meth;
return self;
}
static void
Pmethod_dealloc(self)
Pmethod *self;
{
Py_DECREF(self->type);
Py_XDECREF(self->self);
PyMem_DEL(self);
}
static PyObject *
call_pmethod(self, inst, args, kw)
Pmethod *self;
PyObject *inst;
PyObject *args;
PyObject *kw;
{
PyObject *a;
UNLESS(a=Py_BuildValue("(O)",inst)) return NULL;
UNLESS_ASSIGN(a,PySequence_Concat(a,args)) return NULL;
UNLESS_ASSIGN(a,PyEval_CallObjectWithKeywords(self->meth,a,kw)) return NULL;
return a;
}
static PyObject *
Pmethod_call(self,args,kw)
Pmethod *self;
PyObject *args;
PyObject *kw;
{
int size;
char *buf;
PyObject *s;
if(self->self) return call_pmethod(self,self->self,args,kw);
if((size=PyTuple_Size(args)) > 0)
{
PyObject *first=0;
UNLESS(first=PyTuple_GET_ITEM(args, 0)) return NULL;
if(first->ob_type==self->type
||
(first->ob_type->ob_type==(PyTypeObject*)&CCLtype
&&
CMethod_issubclass((PyExtensionClass *)(first->ob_type),
(PyExtensionClass *)(self->type))
)
);
{
PyObject *rest=0;
UNLESS(rest=PySequence_GetSlice(args,1,size)) return NULL;
return call_pmethod(self,first,rest,kw);
}
}
/* Call of unbound method without instance argument */
size=strlen(self->type->tp_name);
UNLESS(s=PyString_FromStringAndSize(NULL,size+48)) return NULL;
buf=PyString_AsString(s);
sprintf(buf,
"unbound Python method must be called with %s 1st argument",
self->type->tp_name);
PyErr_SetObject(PyExc_TypeError,s);
Py_DECREF(s);
return NULL;
}
static PyObject *
Pmethod_getattr(self,name)
Pmethod *self;
char *name;
{
PyObject *r;
if(strcmp(name,'__name__')==0 || strcmp(name,'func_name')==0 )
return PyObject_GetAttrString(self->meth,"__name__");
if(strcmp(name,'im_func')==0)
{
Py_INCREF(self->meth);
return self->meth;
}
if(strcmp(name,'__doc__')==0 ||
strcmp(name,'func_doc')==0 ||
strcmp(name,'func_doc')==0)
return PyObject_GetAttrString(self->meth,"__doc__");
if(strcmp(name,'im_class')==0)
{
Py_INCREF(self->type);
return (PyObject *)self->type;
}
if(strcmp(name,'im_self')==0)
{
if(self->self) r=self->self;
else r=Py_None;
Py_INCREF(r);
return r;
}
}
static PyTypeObject PmethodType = {
PyObject_HEAD_INIT(&PyType_Type)
0, /*ob_size*/
"Python Method", /*tp_name*/
sizeof(Pmethod), /*tp_basicsize*/
0, /*tp_itemsize*/
/* methods */
(destructor)Pmethod_dealloc, /*tp_dealloc*/
(printfunc)0, /*tp_print*/
(getattrfunc)0, /*tp_getattr*/
(setattrfunc)0, /*tp_setattr*/
(cmpfunc)0, /*tp_compare*/
(reprfunc)0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
(hashfunc)0, /*tp_hash*/
(ternaryfunc)Pmethod_call, /*tp_call*/
(reprfunc)0, /*tp_str*/
/* Space for future expansion */
0L,0L,0L,0L,
"Storage manager for unbound C function PyObject data"
/* Documentation string */
};
/* Special Methods */
#define HAS(M) (M && ((void*)M != (void*)MetaTypeUndefinedMethod))
#define UNARY_OP(OP) \
static PyObject * \
OP ## _by_name(PyObject *self, PyObject *args) { \
UNLESS(PyArg_Parse(args,"")) return NULL; \
return self->ob_type->tp_ ## OP(self); \
}
UNARY_OP(repr)
UNARY_OP(str)
static PyObject *
hash_by_name(PyObject *self, PyObject *args) {
long r;
UNLESS(PyArg_Parse(args,"")) return NULL;
UNLESS(-1 != (r=self->ob_type->tp_hash(self))) return NULL;
return PyInt_FromLong(r);
}
static PyObject *
call_by_name(PyObject *self, PyObject *args, PyObject *kw)
{
return self->ob_type->tp_call(self,args,kw);
}
static PyObject *
compare_by_name(PyObject *self, PyObject *args)
{
PyObject *other;
long r;
UNLESS(PyArg_Parse(args,"O", &other)) return NULL;
return PyInt_FromLong(self->ob_type->tp_compare(self,other));
}
static PyObject *
getattr_by_name(PyObject *self, PyObject *args)
{
char *name;
UNLESS(PyArg_Parse(args,"s",&name)) return NULL;
return self->ob_type->tp_getattr(self,name);
}
static PyObject *
setattr_by_name(PyObject *self, PyObject *args)
{
char *name;
PyObject *v;
UNLESS(PyArg_Parse(args,"sO",&name,&v)) return NULL;
UNLESS(-1 != self->ob_type->tp_setattr(self,name,v)) return NULL;
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *
length_by_name(PyObject *self, PyObject *args)
{
long r;
UNLESS(PyArg_Parse(args,"")) return NULL;
if(self->ob_type->tp_as_sequence)
{
UNLESS(-1 != (r=self->ob_type->tp_as_sequence->sq_length(self)))
return NULL;
}
else
{
UNLESS(-1 != (r=self->ob_type->tp_as_mapping->mp_length(self)))
return NULL;
}
return PyInt_FromLong(r);
}
static PyObject *
getitem_by_name(PyObject *self, PyObject *args)
{
PyObject *key;
UNLESS(PyArg_Parse(args,"O",&key)) return NULL;
if(self->ob_type->tp_as_mapping)
return self->ob_type->tp_as_mapping->mp_subscript(self,key);
else
{
int index;
UNLESS(-1 != (index=PyInt_AsLong(key))) return NULL;
return self->ob_type->tp_as_sequence->sq_item(self,index);
}
}
static PyCFunction item_by_name=(PyCFunction)getitem_by_name;
static PyCFunction subscript_by_name=(PyCFunction)getitem_by_name;
static int
setitem_by_name(PyObject *self, PyObject *args)
{
PyObject *key, *v;
UNLESS(PyArg_Parse(args,"OO",&key,&v)) return NULL;
if(self->ob_type->tp_as_mapping)
return self->ob_type->tp_as_mapping->mp_ass_subscript(self,key,v);
else
{
int index;
UNLESS(-1 != (index=PyInt_AsLong(key))) return -1;
return self->ob_type->tp_as_sequence->sq_ass_item(self,index,v);
}
}
static PyCFunction ass_item_by_name=(PyCFunction)setitem_by_name;
static PyCFunction ass_subscript_by_name=(PyCFunction)setitem_by_name;
static PyObject *
slice_by_name(PyObject *self, PyObject *args)
{
int i1,i2;
UNLESS(PyArg_Parse(args,"ii",&i1,&i2)) return NULL;
return self->ob_type->tp_as_sequence->sq_slice(self,i1,i2);
}
static int
ass_slice_by_name(PyObject *self, PyObject *args)
{
int i1,i2;
PyObject *v;
UNLESS(PyArg_Parse(args,"iiO",&i1,&i2,&v)) return -1;
return self->ob_type->tp_as_sequence->sq_ass_slice(self,i1,i2,v);
}
static PyObject *
concat_by_name(PyObject *self, PyObject *args)
{
PyObject *other;
UNLESS(PyArg_Parse(args,"O",&other)) return NULL;
return self->ob_type->tp_as_sequence->sq_concat(self,other);
}
static PyObject *
repeat_by_name(PyObject *self, PyObject *args)
{
int r;
UNLESS(PyArg_Parse(args,"i",&r)) return NULL;
return self->ob_type->tp_as_sequence->sq_repeat(self,r);
}
#define BINOP(OP,AOP) \
static PyObject * \
OP ## _by_name(PyObject *self, PyObject *args) { \
PyObject *v; \
UNLESS(PyArg_Parse(args,"O",&v)) return NULL; \
return PyNumber_ ## AOP(self,v); \
}
BINOP(add,Add);
BINOP(subtract,Subtract);
BINOP(multiply,Multiply);
BINOP(divide,Divide);
BINOP(remainder,Remainder);
BINOP(divmod,Divmod);
static PyObject *
power_by_name(PyObject *self, PyObject *args)
{
PyObject *v, *z=NULL;
UNLESS(PyArg_ParseTuple(args,"O|O",&v,&z)) return NULL;
return self->ob_type->tp_as_number->nb_power(self,v,z);
}
#define UNOP(OP) \
static PyObject * \
OP ## _by_name(PyObject *self, PyObject *args) { \
UNLESS(PyArg_Parse(args,"")) return NULL; \
return self->ob_type->tp_as_number->nb_ ## OP(self); \
}
UNOP(negative);
UNOP(positive);
UNOP(absolute);
static PyObject *
nonzero_by_name(PyObject *self, PyObject *args) {
long r;
UNLESS(PyArg_Parse(args,"")) return NULL;
UNLESS(-1 != (r=self->ob_type->tp_as_number->nb_nonzero(self))) return NULL;
return PyInt_FromLong(r);
}
UNOP(invert);
BINOP(lshift,Lshift);
BINOP(rshift,Rshift);
BINOP(and,And);
BINOP(or,Or);
BINOP(xor,Xor);
static PyObject *
coerce_by_name(PyObject *self, PyObject *args)
{
PyObject *v;
int r;
UNLESS(PyArg_Parse(args,"O", &v)) return NULL;
UNLESS(-1 != (r=self->ob_type->tp_as_number->nb_coerce(&self,&v)))
{
Py_INCREF(Py_None);
return Py_None;
}
args=Py_BuildValue("OO",self,v);
Py_DECREF(self);
Py_DECREF(v);
return args;
}
UNOP(long);
UNOP(int);
UNOP(float);
UNOP(oct);
UNOP(hex);
#define FILLENTRY(T,MN,N,F,D) if(T ## _ ## MN) { \
UNLESS(-1 != PyMapping_SetItemString(dict,"__" # N "__", \
(PyObject*)newCMethod((PyTypeObject *)type,"__" # N "__", \
(PyCFunction)MN ## _by_name, F, # D))) \
goto err; \
}
static PyObject *
getBaseDictionary(PyExtensionClass *type)
{
PyNumberMethods *nm;
PySequenceMethods *sm;
PyMappingMethods *mm;
PyObject *dict;
UNLESS(dict=PyDict_New()) return NULL;
FILLENTRY(type->tp, repr, repr, 0, "convert to an expression string");
FILLENTRY(type->tp, hash, hash, 0, "compute a hash value");
FILLENTRY(type->tp, call, call, 2, "call as a function");
FILLENTRY(type->tp, compare, comp, 0, "compare with another object");
FILLENTRY(type->tp, getattr, getattr, 0, "Get an attribute");
FILLENTRY(type->tp, setattr, setattr, 0, "Get an attribute");
if(sm=type->tp_as_sequence)
{
FILLENTRY(sm->sq, length, len, 0, "Get the object length");
FILLENTRY(sm->sq, concat, concat, 0,
"Concatinate the object with another");
FILLENTRY(sm->sq, repeat, repeat, 0,
"Get a new object that is the object repeated.");
FILLENTRY(sm->sq, item, getitem, 0, "Get an item");
FILLENTRY(sm->sq, slice, getslice, 0, "Get a slice");
FILLENTRY(sm->sq, ass_item, setitem, 0, "Assign an item");
FILLENTRY(sm->sq, ass_slice, setslice, 0, "Assign a slice");
}
if(mm=type->tp_as_mapping)
{
FILLENTRY(mm->mp, length, len, 0, "Get the object length");
FILLENTRY(mm->mp, subscript, getitem, 0, "Get an item");
FILLENTRY(mm->mp, ass_subscript, setitem, 0, "Assign an item");
}
if((nm=type->tp_as_number) != NULL)
{
FILLENTRY(nm->nb, add, add, 0, "Add to another");
FILLENTRY(nm->nb, subtract, sub, 0, "Subtract another");
FILLENTRY(nm->nb, multiply, mul, 0, "Multiple by another");
FILLENTRY(nm->nb, divide, div, 0, "Divide by another");
FILLENTRY(nm->nb, remainder, mod, 0, "Compute a remainder");
FILLENTRY(nm->nb, power, pow, 1, "Raise to a power");
FILLENTRY(nm->nb, divmod, divmod, 0,
"Compute the whole result and remainder of dividing\n"
"by another");
FILLENTRY(nm->nb, negative, neg, 0, "Get the negative value.");
FILLENTRY(nm->nb, positive, pos, 0, "Compute positive value");
FILLENTRY(nm->nb, absolute, abs, 0, "Compute absolute value");
FILLENTRY(nm->nb, nonzero, nonzero, 0, "Determine whether nonzero");
FILLENTRY(nm->nb, invert, inv, 0, "Compute inverse");
FILLENTRY(nm->nb, lshift, lshift, 0, "Shist left");
FILLENTRY(nm->nb, rshift, rshift, 0, "Shist right");
FILLENTRY(nm->nb, and, and, 0, "bitwize logical and");
FILLENTRY(nm->nb, or, or, 0, "bitwize logical or");
FILLENTRY(nm->nb, xor, xor, 0, "bitwize logical excusive or");
FILLENTRY(nm->nb, coerce, coerce, 0,
"Coerce woth another to a common type");
FILLENTRY(nm->nb, int, int, 0, "Convert to an integer");
FILLENTRY(nm->nb, long, long, 0,
"Convert to an infinite-precision integer");
FILLENTRY(nm->nb, float, float, 0, "Convert to floating point number");
FILLENTRY(nm->nb, oct, oct, 0, "Convert to an octal string");
FILLENTRY(nm->nb, hex, hex, 0, "Convert to a hexadecimal string");
}
return dict;
err:
Py_DECREF(dict);
return NULL;
}
#undef HAS
#undef UNARY_OP
#undef BINOP
#undef UNOP
#undef FILLENTRY
static PyObject *
initializeBaseExtensionClass(PyExtensionClass *self)
{
PyMethodChain *chain;
PyObject *dict;
self->ob_type=(PyTypeObject*)&CCLtype;
Py_INCREF(self->ob_type);
UNLESS(dict=self->class_dictionary=getBaseDictionary(self)) return NULL;
chain=&(self->methods);
while (chain != NULL)
{
PyMethodDef *ml = chain->methods;
for (; ml && ml->ml_name != NULL; ml++)
{
if(ml->ml_meth)
{
UNLESS(-1 != PyMapping_SetItemString(
dict,ml->ml_name,
(PyObject*)
newCMethod((PyTypeObject *)self,
ml->ml_name,
ml->ml_meth,
ml->ml_flags,
ml->ml_doc)))
return NULL;
}
else if(ml->ml_doc && *(ml->ml_doc))
{
/* No actual meth, this is probably to hook a doc string
onto a special method. */
PyObject *m;
if(m=PyMapping_GetItemString(dict,ml->ml_name))
{
if(m->ob_type==&CMethodType)
((CMethod *)(m))->doc=ml->ml_doc;
}
else
PyErr_Clear();
}
}
chain=chain->link;
}
return (PyObject*)self;
}
static void
CCL_dealloc(self)
PyExtensionClass *self;
{
Py_XDECREF(self->class_dictionary);
Py_XDECREF(self->bases);
Py_XDECREF(self->ob_type);
PyMem_DEL(self);
}
static PyObject *CCL_getattr();
static PyObject *
ExtensionClass_FindInstanceAttribute(inst,name)
PyObject *inst;
char *name;
{
/* Look up an attribute for an instance from:
The instance dictionary,
The class dictionary, or
The base objects.
*/
PyObject *r=0;
PyExtensionClass *self;
self=(PyExtensionClass*)(inst->ob_type);
if(*name=='_' && name[1]=='_')
{
if(strcmp(name+2,"class__")==0)
{
Py_INCREF(self);
return (PyObject*)self;
}
if(self->bases && strcmp(name+2,"dict__")==0)
{
r = INSTANCE_DICT(inst);
Py_INCREF(r);
return r;
}
}
if(self->bases)
{
r= INSTANCE_DICT(inst);
r = PyMapping_GetItemString(r,name);
}
UNLESS(r)
{
PyErr_Clear();
UNLESS(r=CCL_getattr(self,name)) return NULL;
/* We got something from our class, maybe its an unbound method. */
if(r->ob_type==&CMethodType)
{
UNLESS_ASSIGN(r,(PyObject*)bindCMethod((CMethod*)r,inst))
return NULL;
}
if(r->ob_type==&PmethodType)
{
PyObject *m;
m=((Pmethod *)r)->meth;
if(m->ob_type->ob_type==(PyTypeObject*)&CCLtype &&
(((PyExtensionClass*)m->ob_type)->class_flags &
EXTENSIONCLASS_BINDABLE_FLAG
)
)
{
UNLESS_ASSIGN(r,PyObject_CallMethod(m,"__bind_to_object__",
"O", inst))
return NULL;
}
else
{
UNLESS_ASSIGN(r,(PyObject*)bindPmethod((Pmethod*)r,inst))
return NULL;
}
}
}
return r;
}
static PyObject *
CCL_getattr(self, name)
PyExtensionClass *self;
char *name;
{
PyObject *r;
int local=1;
if(*name=='.' && name[1]==0)
return (PyObject*)ExtensionClass_FindInstanceAttribute;
if(*name=='_' && name[1]=='_')
{
char *n;
n=name+2;
if(strcmp(n,"doc__")==0 && self->tp_doc)
return PyString_FromString(self->tp_doc);
if(strcmp(n,"name__")==0)
return PyString_FromString(self->tp_name);
if(strcmp(n,"dict__")==0)
{
Py_INCREF(self->class_dictionary);
return self->class_dictionary;
}
if(strcmp(n,"bases__")==0)
{
Py_INCREF(self->bases);
return self->bases;
}
}
r=PyMapping_GetItemString(self->class_dictionary,name);
UNLESS(r)
{
local=0;
if(self->bases)
{
int n, i;
PyObject *c;
n=PyTuple_Size(self->bases);
for(i=0; i < n; i++)
{
PyErr_Clear();
c=PyTuple_GET_ITEM(self->bases, i);
if(r=PyObject_GetAttrString(c,name)) break;
}
}
UNLESS(r)
{
PyObject *t, *v, *tb;
char *s;
PyErr_Fetch(&t,&v,&tb);
if(t==PyExc_KeyError &&
PyString_Check(v) && (s=PyString_AsString(v))
&& strcmp(s,name)==0)
{
Py_DECREF(t);
t=PyExc_AttributeError;
Py_INCREF(t);
}
PyErr_Restore(t,v,tb);
return NULL;
}
}
if(PyFunction_Check(r) ||
(r->ob_type->ob_type==(PyTypeObject*)&CCLtype &&
(((PyExtensionClass*)r->ob_type)->class_flags &
EXTENSIONCLASS_BINDABLE_FLAG
)
)
)
UNLESS_ASSIGN(r,(PyObject*)newPmethod((PyTypeObject *)self,r))
return NULL;
if(PyMethod_Check(r) && ! PyMethod_Self(r))
UNLESS_ASSIGN(r,(PyObject*)newPmethod((PyTypeObject *)self,
PyMethod_Function(r)))
return NULL;
return r;
}
static int
CCL_setattr(self, name, v)
PyExtensionClass *self;
char *name;
PyObject *v;
{
return PyMapping_SetItemString(self->class_dictionary, name, v);
}
static PyObject *
CCL_call(self, arg, kw)
PyExtensionClass *self;
PyObject *arg, *kw;
{
PyObject *inst=0, *init=0, *args=0;
int check;
struct Dataless { PyObject_HEAD };
typedef struct { PyObject_VAR_HEAD } PyVarObject__;
if(PyArg_ParseTuple(arg,"Oi",&inst,&check))
{
if(check==42 && inst->ob_type==&PyType_Type)
{
initializeBaseExtensionClass((PyExtensionClass*)inst);
return (PyObject*)inst;
}
}
else PyErr_Clear();
if(self->tp_itemsize)
{
/* We have a variable-sized object, we need to get it's size */
PyObject *var_size;
int size;
if(var_size=CCL_getattr(self,"__var_size__"))
{
UNLESS_ASSIGN(var_size,PyObject_CallObject(var_size,args))
return NULL;
}
else
{
UNLESS(-1 != (size=PyTuple_Size(args))) return NULL;
if(size > 0)
{
var_size=PyTuple_GET_ITEM(args, 0);
if(PyInt_Check(var_size))
size=PyInt_AsLong(var_size);
else
size=-1;
}
else
size=-1;
if(size < 0)
{
PyErr_SetString(PyExc_TypeError,
"object size expected as first argument");
return NULL;
}
}
UNLESS(inst=PyObject_NEW_VAR(PyObject,(PyTypeObject *)self, size))
return NULL;
memset(inst,0,self->tp_basicsize+self->tp_itemsize*size);
inst->ob_refcnt=1;
inst->ob_type=(PyTypeObject *)self;
((PyVarObject__*)inst)->ob_size=size;
}
else
{
UNLESS(inst=PyObject_NEW(PyObject,(PyTypeObject *)self)) return NULL;
memset(inst,0,self->tp_basicsize);
inst->ob_refcnt=1;
inst->ob_type=(PyTypeObject *)self;
}
Py_INCREF(self);
if(self->bases)
{
UNLESS(INSTANCE_DICT(inst)=PyDict_New()) goto err;
}
if(init=CCL_getattr(self,"__init__"))
{
UNLESS(args=Py_BuildValue("(O)",inst)) goto err;
if(arg) UNLESS_ASSIGN(args,PySequence_Concat(args,arg)) goto err;
UNLESS_ASSIGN(args,PyEval_CallObjectWithKeywords(init,args,kw)) goto err;
Py_DECREF(args);
Py_DECREF(init);
}
else PyErr_Clear();
return inst;
err:
Py_DECREF(inst);
Py_XDECREF(init);
Py_XDECREF(args);
return NULL;
}
static PyObject *
CCL_repr(self)
PyExtensionClass *self;
{
PyObject *s;
int l;
char *buf, p[64];
sprintf(p,"%p",self);
l=strlen(self->ob_type->tp_name)+strlen(p);
UNLESS(s=PyString_FromStringAndSize(NULL,l+22)) return NULL;
buf=PyString_AsString(s);
sprintf(buf,"<extension class %s at %p>",self->tp_name);
return s;
}
static PyTypeObject CCLtype_class = {
PyObject_HEAD_INIT(&PyType_Type)
0, /*ob_size*/
"C Class Class", /*tp_name*/
sizeof(PyExtensionClass), /*tp_basicsize*/
0, /*tp_itemsize*/
/* methods */
(destructor)CCL_dealloc, /*tp_dealloc*/
(printfunc)0, /*tp_print*/
(getattrfunc)CCL_getattr, /*tp_getattr*/
(setattrfunc)CCL_setattr, /*tp_setattr*/
(cmpfunc)0, /*tp_compare*/
(reprfunc)CCL_repr, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
(hashfunc)0, /*tp_hash*/
(ternaryfunc)CCL_call, /*tp_call*/
(reprfunc)0, /*tp_str*/
/* Space for future expansion */
0L,0L,0L,0L,
"Class of C classes" /* Documentation string */
};
/* End of code for ExtensionClass objects */
/* -------------------------------------------------------- */
/* subclassing code: */
static int
subclass_setattr(PyObject *self, char *name, PyObject *v)
{
PyObject *m=0, *et, *ev, *etb;
UNLESS(m=PyObject_GetAttrString(self,"__setattr__"))
goto default_setattr;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==setattr_by_name)
{
UNLESS(-1 != ((CMethod*)m)->type->tp_setattr(self,name,v))
goto dictionary_setattr;
return 0;
}
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"sO",name,v)) return -1;
Py_DECREF(m);
return 0;
dictionary_setattr:
Py_XDECREF(m);
PyErr_Fetch(&et, &ev, &etb);
if(et==PyExc_AttributeError)
{
char *s;
if(ev && PyString_Check(ev) && (s=PyString_AsString(ev)) &&
strcmp(s,name)==0)
{
Py_XDECREF(et);
Py_XDECREF(ev);
Py_XDECREF(etb);
et=0;
}
}
if(et)
{
PyErr_Restore(et,ev,etb);
return -1;
}
default_setattr:
UNLESS(-1 != PyMapping_SetItemString(INSTANCE_DICT(self),name,v))
return -1;
return 0;
}
static int
subclass_compare(PyObject *self, PyObject *v)
{
PyObject *m;
long r;
UNLESS(m=PyObject_GetAttrString(self,"__cmp__")) return -1;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==compare_by_name)
r=((CMethod*)m)->type->tp_compare(self,v);
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"O",v)) return -1;
r=PyInt_AsLong(m);
}
Py_DECREF(m);
return r;
}
static long
subclass_hash(PyObject *self)
{
PyObject *m;
long r;
UNLESS(m=PyObject_GetAttrString(self,"__hash__")) return -1;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==hash_by_name)
r=((CMethod*)m)->type->tp_hash(self);
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"")) return -1;
r=PyInt_AsLong(m);
}
Py_DECREF(m);
return r;
}
static PyObject *
subclass_repr(PyObject *self)
{
PyObject *m;
UNLESS(m=PyObject_GetAttrString(self,"__repr__"))
{
int l;
char *buf, p[64];
PyErr_Clear();
sprintf(p,"%p",self);
l=strlen(self->ob_type->tp_name)+strlen(p);
UNLESS(m=PyString_FromStringAndSize(NULL,l+15)) return NULL;
buf=PyString_AsString(m);
sprintf(buf,"<%s instance at %s>",self->ob_type->tp_name,p);
return m;
}
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==repr_by_name)
{
UNLESS_ASSIGN(m,((CMethod*)m)->type->tp_repr(self)) return NULL;
}
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"")) return NULL;
}
return m;
}
static PyObject *
subclass_call(PyObject *self, PyObject *args, PyObject *kw)
{
PyObject *m;
UNLESS(m=PyObject_GetAttrString(self,"__call__")) return NULL;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==(PyCFunction)call_by_name)
{
UNLESS_ASSIGN(m,((CMethod*)m)->type->tp_call(self,args,kw)) return NULL;
}
else
{
UNLESS_ASSIGN(m,PyEval_CallObjectWithKeywords(m,args,kw)) return NULL;
}
return m;
}
static PyObject *
subclass_str(PyObject *self)
{
PyObject *m;
UNLESS(m=PyObject_GetAttrString(self,"__str__"))
{
PyErr_Clear();
return subclass_repr(self);
}
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==str_by_name)
{
UNLESS_ASSIGN(m,((CMethod*)m)->type->tp_str(self)) return NULL;
}
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"")) return NULL;
}
return m;
}
#define BINSUB(M,N,A) \
static PyObject * \
subclass_ ## M(PyObject *self, PyObject *v) \
{ \
PyObject *m; \
UNLESS(m=PyObject_GetAttrString(self,"__" # M "__")) return NULL; \
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==M ## _by_name) \
{ \
UNLESS_ASSIGN(m,PyNumber_ ## A(self,v)) \
return NULL; \
} \
else \
{ \
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"O",v)) return NULL; \
} \
return m; \
}
BINSUB(add,add,Add);
BINSUB(subtract,sub,Subtract);
BINSUB(multiply,mul,Multiply);
BINSUB(divide,div,Divide);
BINSUB(remainder,mod,Remainder);
static PyObject *
subclass_power(PyObject *self, PyObject *v, PyObject *w)
{
PyObject *m;
UNLESS(m=PyObject_GetAttrString(self,"__pow__")) return NULL;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==power_by_name)
{
UNLESS_ASSIGN(m,((CMethod*)m)->type->tp_as_number->nb_power(self,v,w))
return NULL;
}
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"OO",v,w)) return NULL;
}
return m;
}
BINSUB(divmod,divmod,Divmod);
BINSUB(lshift,lshift,Lshift);
BINSUB(rshift,rshift,Rshift);
BINSUB(and,and,And);
BINSUB(or,or,Or);
BINSUB(xor,xor,Xor);
static int
subclass_coerce(PyObject **self, PyObject **v)
{
PyObject *m;
int r;
UNLESS(m=PyObject_GetAttrString(*self,"__coerce__")) return -1;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==coerce_by_name)
r=((CMethod*)m)->type->tp_as_number->nb_coerce(self,v);
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"OO",*self,*v)) return -1;
if(m==Py_None) r=-1;
else
{
PyArg_ParseTuple(m,"O",v);
Py_INCREF(*self);
Py_INCREF(*v);
r=0;
}
}
Py_DECREF(m);
return r;
}
#define UNSUB(M,N) \
static PyObject * \
subclass_ ## M(PyObject *self) \
{ \
PyObject *m; \
UNLESS(m=PyObject_GetAttrString(self,"__" # M "__")) return NULL; \
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==M ## _by_name) \
{ \
UNLESS_ASSIGN(m,((CMethod*)m)->type->tp_as_number->nb_ ## M(self)) \
return NULL; \
} \
else \
{ \
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"O")) return NULL; \
} \
return m; \
}
UNSUB(negative, neg)
UNSUB(positive, pos)
UNSUB(absolute, abs)
static int
subclass_nonzero(PyObject *self)
{
PyObject *m;
long r;
UNLESS(m=PyObject_GetAttrString(self,"__nonzero__")) return -1;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==nonzero_by_name)
r=((CMethod*)m)->type->tp_as_number->nb_nonzero(self);
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"")) return -1;
r=PyInt_AsLong(m);
}
Py_DECREF(m);
return r;
}
UNSUB(invert, inv)
UNSUB(int, int)
UNSUB(long, long)
UNSUB(float, float)
UNSUB(oct, oct)
UNSUB(hex, hex)
#undef UNSUB
#undef BINSUB
static PyNumberMethods subclass_as_number = {
(binaryfunc)subclass_add, /*nb_add*/
(binaryfunc)subclass_subtract, /*nb_subtract*/
(binaryfunc)subclass_multiply, /*nb_multiply*/
(binaryfunc)subclass_divide, /*nb_divide*/
(binaryfunc)subclass_remainder, /*nb_remainder*/
(binaryfunc)subclass_divmod, /*nb_divmod*/
(ternaryfunc)subclass_power, /*nb_power*/
(unaryfunc)subclass_negative, /*nb_negative*/
(unaryfunc)subclass_positive, /*nb_positive*/
(unaryfunc)subclass_absolute, /*nb_absolute*/
(inquiry)subclass_nonzero, /*nb_nonzero*/
(unaryfunc)subclass_invert, /*nb_invert*/
(binaryfunc)subclass_lshift, /*nb_lshift*/
(binaryfunc)subclass_rshift, /*nb_rshift*/
(binaryfunc)subclass_and, /*nb_and*/
(binaryfunc)subclass_xor, /*nb_xor*/
(binaryfunc)subclass_or, /*nb_or*/
(coercion)subclass_coerce, /*nb_coerce*/
(unaryfunc)subclass_int, /*nb_int*/
(unaryfunc)subclass_long, /*nb_long*/
(unaryfunc)subclass_float, /*nb_float*/
(unaryfunc)subclass_oct, /*nb_oct*/
(unaryfunc)subclass_hex, /*nb_hex*/
};
static long
subclass_length(PyObject *self)
{
PyObject *m;
long r;
PyExtensionClass *t;
UNLESS(m=PyObject_GetAttrString(self,"__len__")) return -1;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==length_by_name)
{
t=(PyExtensionClass*)((CMethod*)m)->type;
Py_DECREF(m);
if(t->tp_as_sequence)
return t->tp_as_sequence->sq_length(self);
else
return t->tp_as_mapping->mp_length(self);
}
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"")) return -1;
r=PyInt_AsLong(m);
}
Py_DECREF(m);
return r;
}
static PyObject *
subclass_item(PyObject *self, int index)
{
PyObject *m;
PyExtensionClass *t;
UNLESS(m=PyObject_GetAttrString(self,"__getitem__")) return NULL;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==getitem_by_name)
{
t=(PyExtensionClass*)((CMethod*)m)->type;
if(t->tp_as_sequence && t->tp_as_sequence->sq_item)
{
Py_DECREF(m);
return t->tp_as_sequence->sq_item(self,index);
}
}
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"i",index)) goto err;
return m;
err:
Py_DECREF(m);
return NULL;
}
static long
subclass_ass_item(PyObject *self, int index, PyObject *v)
{
long r;
PyObject *m;
PyExtensionClass *t;
UNLESS(m=PyObject_GetAttrString(self,"__setitem__")) return -1;
if(m->ob_type==&CMethodType &&
((CMethod*)m)->meth==(PyCFunction)setitem_by_name)
{
t=(PyExtensionClass*)((CMethod*)m)->type;
if(t->tp_as_sequence && t->tp_as_sequence->sq_ass_item)
{
Py_DECREF(m);
return t->tp_as_sequence->sq_ass_item(self,index,v);
}
}
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"iO",index,v)) return -1;
r=PyInt_AsLong(m);
Py_DECREF(m);
return r;
err:
Py_DECREF(m);
return NULL;
}
static PyObject *
subclass_slice(PyObject *self, int i1, int i2)
{
PyObject *m;
UNLESS(m=PyObject_GetAttrString(self,"__getslice__")) return NULL;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==slice_by_name)
{
UNLESS_ASSIGN(m,((CMethod*)m)->type->tp_as_sequence->sq_slice(self,i1,i2))
return NULL;
}
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"ii",i1,i2)) return NULL;
}
return m;
}
static int
subclass_ass_slice(PyObject *self, int i1, int i2, PyObject *v)
{
PyObject *m;
long r;
UNLESS(m=PyObject_GetAttrString(self,"__setslice__")) return -1;
if(m->ob_type==&CMethodType &&
((CMethod*)m)->meth==(PyCFunction)ass_slice_by_name)
r=((CMethod*)m)->type->tp_as_sequence->sq_ass_slice(self,i1,i2,v);
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"iiO",i1,i2,v)) return -1;
r=PyInt_AsLong(m);
}
Py_DECREF(m);
return r;
}
static PyObject *
subclass_concat(PyObject *self, PyObject *v)
{
PyObject *m;
UNLESS(m=PyObject_GetAttrString(self,"__concat__"))
{ /* Maybe we should check for __add__ */
PyObject *am;
PyErr_Clear();
UNLESS(am=PyObject_GetAttrString(self,"__add__")) return NULL;
if(m=PyObject_GetAttrString(self,"__coerce__"))
{
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==coerce_by_name)
{
PyObject *x,*y;
x=self;
y=v;
if(0==((CMethod*)m)->type->tp_as_number->nb_coerce(&x,&y))
{
Py_DECREF(am);
if(x->ob_type->tp_as_number)
am=x->ob_type->tp_as_number->nb_add(x,y);
else
am=NULL;
Py_DECREF(m);
Py_DECREF(x);
Py_DECREF(y);
if(am) return am;
}
}
Py_DECREF(m);
}
Py_DECREF(am);
PyErr_SetString(PyExc_AttributeError,
"No __add__ or __concat__ methods, or maybe I'm just being stupid.");
return NULL;
}
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==concat_by_name)
{
UNLESS_ASSIGN(m,((CMethod*)m)->type->tp_as_sequence->sq_concat(self,v))
return NULL;
}
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"O",v)) return NULL;
}
return m;
}
static PyObject *
subclass_repeat(PyObject *self, int v)
{
PyObject *m;
UNLESS(m=PyObject_GetAttrString(self,"__repeat__")) return NULL;
if(m->ob_type==&CMethodType && ((CMethod*)m)->meth==repeat_by_name)
{
UNLESS_ASSIGN(m,((CMethod*)m)->type->tp_as_sequence->sq_repeat(self,v))
return NULL;
}
else
{
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"i",v)) return NULL;
}
return m;
}
PySequenceMethods subclass_as_sequence = {
(inquiry)subclass_length, /*sq_length*/
(binaryfunc)subclass_concat, /*sq_concat*/
(intargfunc)subclass_repeat, /*sq_repeat*/
(intargfunc)subclass_item, /*sq_item*/
(intintargfunc)subclass_slice, /*sq_slice*/
(intobjargproc)subclass_ass_item, /*sq_ass_item*/
(intintobjargproc)subclass_ass_slice, /*sq_ass_slice*/
};
static PyObject *
subclass_subscript(PyObject *self, PyObject *key)
{
PyObject *m;
PyExtensionClass *t;
UNLESS(m=PyObject_GetAttrString(self,"__getitem__")) return NULL;
if(m->ob_type==&CMethodType &&
((CMethod*)m)->meth==(PyCFunction)getitem_by_name)
{
t=(PyExtensionClass*)((CMethod*)m)->type;
if(t->tp_as_mapping && t->tp_as_mapping->mp_subscript)
{
Py_DECREF(m);
return t->tp_as_mapping->mp_subscript(self,key);
}
}
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"O",key)) goto err;
return m;
err:
Py_DECREF(m);
return NULL;
}
static long
subclass_ass_subscript(PyObject *self, PyObject *index, PyObject *v)
{
long r;
PyObject *m;
PyExtensionClass *t;
UNLESS(m=PyObject_GetAttrString(self,"__setitem__")) return -1;
if(m->ob_type==&CMethodType &&
((CMethod*)m)->meth==(PyCFunction)setitem_by_name)
{
t=(PyExtensionClass*)((CMethod*)m)->type;
if(t->tp_as_sequence && t->tp_as_mapping->mp_ass_subscript)
{
Py_DECREF(m);
return t->tp_as_mapping->mp_ass_subscript(self,index,v);
}
}
UNLESS_ASSIGN(m,PyObject_CallFunction(m,"OO",index,v)) return -1;
r=PyInt_AsLong(m);
Py_DECREF(m);
return r;
err:
Py_DECREF(m);
return NULL;
}
PyMappingMethods subclass_as_mapping = {
(inquiry)subclass_length, /*mp_length*/
(binaryfunc)subclass_subscript, /*mp_subscript*/
(objobjargproc)subclass_ass_subscript, /*mp_ass_subscript*/
};
static int
dealloc_base(PyObject *inst, PyExtensionClass* self)
{
int i,l;
PyObject *t;
l=PyTuple_Size(self->bases);
for(i=0; i < l; i++)
{
t=PyTuple_GET_ITEM(self->bases, i);
if(t->ob_type==(PyTypeObject*)&CCLtype)
{
if(((PyExtensionClass*)t)->bases)
{
if(dealloc_base(inst,(PyExtensionClass*)t)) return 1;
}
else
{
if(((PyExtensionClass*)t)->tp_dealloc)
{
((PyExtensionClass*)t)->tp_dealloc(inst);
return 1;
}
}
}
}
return 0;
}
static void
subclass_dealloc(PyObject *self)
{
PyObject *m, *t, *v, *tb;
PyErr_Fetch(&t,&v,&tb);
if(m=PyObject_GetAttrString(self,"__del__"))
PyObject_CallFunction(m,"");
PyErr_Clear();
Py_XDECREF(INSTANCE_DICT(self));
Py_DECREF(self->ob_type);
dealloc_base(self,(PyExtensionClass*)self->ob_type);
PyErr_Restore(t,v,tb);
}
static int
datafull_baseclasses(PyExtensionClass *type)
{
/* Find the number of classes that have data and return them.
There should be only one.
*/
int l, i, n=0;
PyObject *base;
typedef struct { PyObject_HEAD } Dataless;
l=PyTuple_Size(type->bases);
for(i=0; i < l; i++)
{
base=PyTuple_GET_ITEM(type->bases, i);
if(base->ob_type==(PyTypeObject*)&CCLtype)
{
if(((PyExtensionClass*)base->ob_type)->bases)
n+=datafull_baseclasses((PyExtensionClass*)base);
else
{
if(((PyExtensionClass*)base)->tp_basicsize > sizeof(Dataless) ||
((PyExtensionClass*)base)->tp_itemsize > 0)
n++;
}
}
}
return n;
}
static PyObject *
datafull_baseclass(PyExtensionClass *type)
{
/* Find the number of classes that have data and return them.
There should be only one.
*/
int l, i, n=0;
PyObject *base, *dbase;
l=PyTuple_Size(type->bases);
for(i=0; i < l; i++)
{
base=PyTuple_GET_ITEM(type->bases, i);
if(base->ob_type==(PyTypeObject*)&CCLtype)
{
if(((PyExtensionClass*)base->ob_type)->bases)
{
if(dbase=datafull_baseclass((PyExtensionClass*)base))
return dbase;
}
else
{
if(((PyExtensionClass*)base)->tp_basicsize > sizeof(Dataless) ||
((PyExtensionClass*)base)->tp_itemsize > 0)
return base;
}
}
}
return NULL;
}
static int
subclass_hasattr(PyExtensionClass *type, char *name)
{
PyObject *o;
if(o=CCL_getattr(type,name))
{
Py_DECREF(o);
return 1;
}
PyErr_Clear();
return 0;
}
static int
has_number_methods(PyExtensionClass *type)
{
return (subclass_hasattr(type,"__add__") ||
subclass_hasattr(type,"__sub__") ||
subclass_hasattr(type,"__mul__") ||
subclass_hasattr(type,"__div__") ||
subclass_hasattr(type,"__mod__") ||
subclass_hasattr(type,"__pow__") ||
subclass_hasattr(type,"__divmod__") ||
subclass_hasattr(type,"__lshift__") ||
subclass_hasattr(type,"__rshift__") ||
subclass_hasattr(type,"__and__") ||
subclass_hasattr(type,"__or__") ||
subclass_hasattr(type,"__xor__") ||
subclass_hasattr(type,"__coerce__") ||
subclass_hasattr(type,"__neg__") ||
subclass_hasattr(type,"__pos__") ||
subclass_hasattr(type,"__abs__") ||
subclass_hasattr(type,"__nonzero__") ||
subclass_hasattr(type,"__inv__") ||
subclass_hasattr(type,"__int__") ||
subclass_hasattr(type,"__long__") ||
subclass_hasattr(type,"__float__") ||
subclass_hasattr(type,"__oct__") ||
subclass_hasattr(type,"__hex__")
);
}
static int
has_collection_methods(PyExtensionClass *type)
{
return (subclass_hasattr(type,"__getitem__") ||
subclass_hasattr(type,"__setitem__") ||
subclass_hasattr(type,"__getslice__") ||
subclass_hasattr(type,"__setslice__") ||
subclass_hasattr(type,"__concat__") ||
subclass_hasattr(type,"__repeat__") ||
subclass_hasattr(type,"__len__")
);
}
/* Constructor for building subclasses of C classes.
That is, we want to build a C class object that described a
subclass of a built-in type.
*/
static PyObject *
subclass__init__(self,args)
PyExtensionClass *self;
PyObject *args;
{
PyObject *bases, *methods;
PyExtensionClass *type;
char *name;
int dynamic=1;
UNLESS(PyArg_Parse(args,"(sOO)", &name, &bases, &methods)) return NULL;
UNLESS(PyTuple_Check(bases) && PyTuple_Size(bases))
{
PyErr_SetString
(PyExc_TypeError,
"second argument must be a tuple of 1 or more base classes");
}
self->bases=bases;
Py_INCREF(bases);
if(datafull_baseclasses(self) > 1)
{
PyErr_SetString(PyExc_TypeError, "too many datafull base classes");
return NULL;
}
UNLESS(type=(PyExtensionClass *)datafull_baseclass(self))
type=(PyExtensionClass*)PyTuple_GET_ITEM(bases, 0);
self->tp_name=name;
self->bases=bases;
Py_INCREF(methods);
self->class_dictionary=methods;
#define copy_member(M) self->M=type->M
copy_member(ob_size);
copy_member(class_flags);
if(type->bases)
copy_member(tp_basicsize);
else
{
self->tp_basicsize=type->tp_basicsize/sizeof(PyObject*)*sizeof(PyObject*);
if(self->tp_basicsize < type->tp_basicsize)
self->tp_basicsize += sizeof(PyObject*); /* To align on PyObject */
self->tp_basicsize += sizeof(PyObject*); /* For instance dictionary */
}
copy_member(tp_itemsize);
copy_member(tp_print);
copy_member(tp_getattr);
self->tp_dealloc=subclass_dealloc;
self->tp_setattr=subclass_setattr;
#define subclass_set(OP,N) \
self->tp_ ##OP = subclass_ ##OP;
subclass_set(compare,cmp);
subclass_set(repr,repr);
if(subclass_hasattr(self,"__bind_to_object__") &&
subclass_hasattr(self,"__call__"))
self->class_flags |= EXTENSIONCLASS_BINDABLE_FLAG;
if(dynamic || has_number_methods(self))
self->tp_as_number=&subclass_as_number;
else
self->tp_as_number=NULL;
if(dynamic || has_collection_methods(self))
{
self->tp_as_sequence=&subclass_as_sequence;
self->tp_as_mapping=&subclass_as_mapping;
}
else
{
self->tp_as_sequence=NULL;
self->tp_as_sequence=NULL;
}
subclass_set(hash,hash);
subclass_set(call,call);
subclass_set(str,str);
self->tp_doc=0;
Py_INCREF(Py_None);
return Py_None;
}
struct PyMethodDef ExtensionClass_methods[] = {
{"__init__",(PyCFunction)subclass__init__,0,""},
{NULL, NULL} /* sentinel */
};
static PyExtensionClass CCLtype = {
PyObject_HEAD_INIT(&CCLtype_class)
0, /*ob_size*/
"C Class", /*tp_name*/
sizeof(PyExtensionClass), /*tp_basicsize*/
0, /*tp_itemsize*/
/* methods */
(destructor)CCL_dealloc, /*tp_dealloc*/
(printfunc)0, /*tp_print*/
(getattrfunc)CCL_getattr, /*tp_getattr*/
(setattrfunc)CCL_setattr, /*tp_setattr*/
(cmpfunc)0, /*tp_compare*/
(reprfunc)CCL_repr, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
(hashfunc)0, /*tp_hash*/
(ternaryfunc)CCL_call, /*tp_call*/
(reprfunc)0, /*tp_str*/
/* Space for future expansion */
0L,0L,0L,0L,
"C classes", /* Documentation string */
METHOD_CHAIN(ExtensionClass_methods)
};
static PyExtensionClass Basetype = {
PyObject_HEAD_INIT(&PyType_Type)
0, /*ob_size*/
"Base", /*tp_name*/
sizeof(Dataless), /*tp_basicsize*/
0, /*tp_itemsize*/
/* methods */
(destructor)0, /*tp_dealloc*/
(printfunc)0, /*tp_print*/
(getattrfunc)ExtensionClass_FindInstanceAttribute, /*tp_getattr*/
(setattrfunc)0, /*tp_setattr*/
(cmpfunc)0, /*tp_compare*/
(reprfunc)0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
(hashfunc)0, /*tp_hash*/
(ternaryfunc)0, /*tp_call*/
(reprfunc)0, /*tp_str*/
/* Space for future expansion */
0L,0L,0L,0L,
"Base -- a do nothing base class\n"
"\n"
"A trivial base class that doesn't have any inheritable\n"
"attributes but that can be listed first in the set of superclasses \n"
"of a new subclass. \n",
{NULL,NULL}
};
PyObject *
MetaTypeUndefinedMethod()
{
PyErr_SetString(PyExc_TypeError,
"undefined operation on partially numeric PyObject");
return NULL;
}
/* List of methods defined in the module */
static struct PyMethodDef CC_methods[] = {
{NULL, NULL} /* sentinel */
};
void
initExtensionClass()
{
PyObject *m, *d;
/* Create the module and add the functions */
m = Py_InitModule4("ExtensionClass", CC_methods,
ExtensionClass_module_documentation,
(PyObject*)NULL,PYTHON_API_VERSION);
/* Add some symbolic constants to the module */
d = PyModule_GetDict(m);
initializeBaseExtensionClass(&CCLtype);
PyDict_SetItemString(d, "ExtensionClassType", (PyObject*)&CCLtype);
initializeBaseExtensionClass(&Basetype);
PyDict_SetItemString(d, "Base", (PyObject*)&Basetype);
/* Check for errors */
if (PyErr_Occurred())
Py_FatalError("can't initialize module ExtensionClass");
}
lib/Components/ExtensionClass/src/ExtensionClass.h 0 → 100644
View file @ 3600c6a7
/*
$Id: ExtensionClass.h,v 1.1 1996/10/22 22:25:43 jim Exp $
Extension Class Definitions
Copyright
Copyright 1996 Digital Creations, L.C., 910 Princess Anne
Street, Suite 300, Fredericksburg, Virginia 22401 U.S.A. All
rights reserved. Copyright in this software is owned by DCLC,
unless otherwise indicated. Permission to use, copy and
distribute this software is hereby granted, provided that the
above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear. Note that
any product, process or technology described in this software
may be the subject of other Intellectual Property rights
reserved by Digital Creations, L.C. and are not licensed
hereunder.
Trademarks
Digital Creations & DCLC, are trademarks of Digital Creations, L.C..
All other trademarks are owned by their respective companies.
No Warranty
The software is provided "as is" without warranty of any kind,
either express or implied, including, but not limited to, the
implied warranties of merchantability, fitness for a particular
purpose, or non-infringement. This software could include
technical inaccuracies or typographical errors. Changes are
periodically made to the software; these changes will be
incorporated in new editions of the software. DCLC may make
improvements and/or changes in this software at any time
without notice.
Limitation Of Liability
In no event will DCLC be liable for direct, indirect, special,
incidental, economic, cover, or consequential damages arising
out of the use of or inability to use this software even if
advised of the possibility of such damages. Some states do not
allow the exclusion or limitation of implied warranties or
limitation of liability for incidental or consequential
damages, so the above limitation or exclusion may not apply to
you.
If you have questions regarding this software,
contact:
Jim Fulton, jim@digicool.com
Digital Creations L.C.
(540) 371-6909
$Log: ExtensionClass.h,v $
Revision 1.1 1996/10/22 22:25:43 jim
*** empty log message ***
*/
#ifndef EXTENSIONCLASS_H
#define EXTENSIONCLASS_H
#include "Python.h"
#include "import.h"
/* Declarations for objects of type ExtensionClass */
typedef struct {
PyObject_VAR_HEAD
char *tp_name; /* For printing */
int tp_basicsize, tp_itemsize; /* For allocation */
/* Methods to implement standard operations */
destructor tp_dealloc;
printfunc tp_print;
getattrfunc tp_getattr;
setattrfunc tp_setattr;
cmpfunc tp_compare;
reprfunc tp_repr;
/* Method suites for standard classes */
PyNumberMethods *tp_as_number;
PySequenceMethods *tp_as_sequence;
PyMappingMethods *tp_as_mapping;
/* More standard operations (at end for binary compatibility) */
hashfunc tp_hash;
ternaryfunc tp_call;
reprfunc tp_str;
long tp_xxx1; /*getattrofunc tp_getattro;*/
long tp_xxx2; /*setattrofunc tp_setattro;*/
/* Space for future expansion */
long tp_xxx3;
long tp_xxx4;
char *tp_doc; /* Documentation string */
/* Here's the juicy stuff */
PyMethodChain methods;
PyObject *class_dictionary;
PyObject *bases;
long class_flags;
#define EXTENSIONCLASS_DYNAMIC_FLAG 1
#define EXTENSIONCLASS_BINDABLE_FLAG 2
#ifdef COUNT_ALLOCS
/* these must be last */
int tp_alloc;
int tp_free;
int tp_maxalloc;
struct _typeobject *tp_next;
#endif
} PyExtensionClass;
/* Don't look at this. :-) */
#define Py_FindMethod(M,SELF,NAME) \
((getattrfunc)(SELF->ob_type->ob_type->tp_getattr(SELF->ob_type,"."))) \
(SELF,NAME)
#define Py_FindAttrString(SELF,NAME) \
((getattrfunc)(SELF->ob_type->ob_type->tp_getattr(SELF->ob_type,"."))) \
(SELF,NAME)
#define PyExtensionClass_Export(D,N,T) { \
PyObject *_ExtensionClass_module; \
if(_ExtensionClass_module=PyImport_ImportModule("ExtensionClass")) { \
if(PyObject_CallMethod(_ExtensionClass_module, \
"ExtensionClassType", "Oi", &T, 42)) \
PyMapping_SetItemString(D,N,(PyObject*)&T); \
Py_DECREF(_ExtensionClass_module); \
} \
}
#define METHOD_CHAIN(DEF) { DEF, NULL }
#define CHECK_FOR_ERRORS(MESS) \
if(PyErr_Occurred()) { \
PyObject *__sys_exc_type, *__sys_exc_value, *__sys_exc_traceback; \
PyErr_Fetch( &__sys_exc_type, &__sys_exc_value, &__sys_exc_traceback); \
fprintf(stderr, # MESS ":\n\t"); \
PyObject_Print(__sys_exc_type, stderr,0); \
fprintf(stderr,", "); \
PyObject_Print(__sys_exc_value, stderr,0); \
fprintf(stderr,"\n"); \
fflush(stderr); \
Py_FatalError(# MESS); \
}
#endif
lib/Components/ExtensionClass/src/MultiMapping.c 0 → 100644
View file @ 3600c6a7
/*
$Id: MultiMapping.c,v 1.1 1996/10/22 22:27:42 jim Exp $
Sample extension class program that implements multi-mapping objects.
Copyright
Copyright 1996 Digital Creations, L.C., 910 Princess Anne
Street, Suite 300, Fredericksburg, Virginia 22401 U.S.A. All
rights reserved. Copyright in this software is owned by DCLC,
unless otherwise indicated. Permission to use, copy and
distribute this software is hereby granted, provided that the
above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear. Note that
any product, process or technology described in this software
may be the subject of other Intellectual Property rights
reserved by Digital Creations, L.C. and are not licensed
hereunder.
Trademarks
Digital Creations & DCLC, are trademarks of Digital Creations, L.C..
All other trademarks are owned by their respective companies.
No Warranty
The software is provided "as is" without warranty of any kind,
either express or implied, including, but not limited to, the
implied warranties of merchantability, fitness for a particular
purpose, or non-infringement. This software could include
technical inaccuracies or typographical errors. Changes are
periodically made to the software; these changes will be
incorporated in new editions of the software. DCLC may make
improvements and/or changes in this software at any time
without notice.
Limitation Of Liability
In no event will DCLC be liable for direct, indirect, special,
incidental, economic, cover, or consequential damages arising
out of the use of or inability to use this software even if
advised of the possibility of such damages. Some states do not
allow the exclusion or limitation of implied warranties or
limitation of liability for incidental or consequential
damages, so the above limitation or exclusion may not apply to
you.
If you have questions regarding this software,
contact:
Jim Fulton, jim@digicool.com
Digital Creations L.C.
(540) 371-6909
Full description
$Log: MultiMapping.c,v $
Revision 1.1 1996/10/22 22:27:42 jim
*** empty log message ***
*/
#include "Python.h"
#include "ExtensionClass.h"
#define UNLESS(E) if(!(E))
typedef struct {
PyObject_HEAD
PyObject *data;
} MMobject;
staticforward PyExtensionClass MMtype;
static PyObject *
MM_push(self, args)
MMobject *self;
PyObject *args;
{
PyObject *src;
UNLESS(PyArg_ParseTuple(args, "O", &src)) return NULL;
UNLESS(-1 != PyList_Append(self->data,src)) return NULL;
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *
MM_pop(self, args)
MMobject *self;
PyObject *args;
{
long l;
PyObject *r;
static PyObject *emptyList=0;
UNLESS(emptyList) UNLESS(emptyList=PyList_New(0)) return NULL;
UNLESS(PyArg_ParseTuple(args, "")) return NULL;
UNLESS(-1 != (l=PyList_Size(self->data))) return NULL;
l--;
UNLESS(r=PySequence_GetItem(self->data,l)) return NULL;
UNLESS(-1 != PyList_SetSlice(self->data,l,l+1,emptyList)) goto err;
return r;
err:
Py_DECREF(r);
return NULL;
}
static PyObject *
MM__init__(self, args)
MMobject *self;
PyObject *args;
{
UNLESS(PyArg_ParseTuple(args, "")) return NULL;
UNLESS(self->data=PyList_New(0)) goto err;
Py_INCREF(Py_None);
return Py_None;
err:
Py_DECREF(self);
return NULL;
}
static struct PyMethodDef MM_methods[] = {
{"__init__", (PyCFunction)MM__init__, 1,
"__init__() -- Create a new empty multi-mapping"},
{"push", (PyCFunction) MM_push, 1,
"push(mapping_object) -- Add a data source"},
{"pop", (PyCFunction) MM_pop, 1,
"pop() -- Remove and return the last data source added"},
{NULL, NULL} /* sentinel */
};
static void
MM_dealloc(self)
MMobject *self;
{
Py_XDECREF(self->data);
PyMem_DEL(self);
}
static PyObject *
MM_getattr(self, name)
MMobject *self;
char *name;
{
return Py_FindMethod(MM_methods, (PyObject *)self, name);
}
static int
MM_length(self)
MMobject *self;
{
long l=0, el, i;
PyObject *e=0;
UNLESS(-1 != (i=PyList_Size(self->data))) return -1;
while(--i >= 0)
{
e=PyList_GetItem(self->data,i);
UNLESS(-1 != (el=PyObject_Length(e))) return -1;
l+=el;
}
return l;
}
static PyObject *
MM_subscript(self, key)
MMobject *self;
PyObject *key;
{
long i;
PyObject *e;
UNLESS(-1 != (i=PyList_Size(self->data))) return NULL;
while(--i >= 0)
{
e=PyList_GetItem(self->data,i);
if(e=PyObject_GetItem(e,key)) return e;
PyErr_Clear();
}
PyErr_SetObject(PyExc_KeyError,key);
return NULL;
}
static PyMappingMethods MM_as_mapping = {
(inquiry)MM_length, /*mp_length*/
(binaryfunc)MM_subscript, /*mp_subscript*/
(objobjargproc)NULL, /*mp_ass_subscript*/
};
/* -------------------------------------------------------- */
static char MMtype__doc__[] =
"MultiMapping -- Combine multiple mapping objects for lookup"
;
static PyExtensionClass MMtype = {
PyObject_HEAD_INIT(&PyType_Type)
0, /*ob_size*/
"MultMapping", /*tp_name*/
sizeof(MMobject), /*tp_basicsize*/
0, /*tp_itemsize*/
/* methods */
(destructor)MM_dealloc, /*tp_dealloc*/
(printfunc)0, /*tp_print*/
(getattrfunc)MM_getattr, /*tp_getattr*/
(setattrfunc)0, /*tp_setattr*/
(cmpfunc)0, /*tp_compare*/
(reprfunc)0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
&MM_as_mapping, /*tp_as_mapping*/
(hashfunc)0, /*tp_hash*/
(ternaryfunc)0, /*tp_call*/
(reprfunc)0, /*tp_str*/
/* Space for future expansion */
0L,0L,0L,0L,
MMtype__doc__, /* Documentation string */
METHOD_CHAIN(MM_methods)
};
static struct PyMethodDef MultiMapping_methods[] = {
{NULL, NULL} /* sentinel */
};
void
initMultiMapping()
{
PyObject *m, *d;
m = Py_InitModule4("MultiMapping", MultiMapping_methods,
"MultiMapping -- Wrap multiple mapping objects for lookup",
(PyObject*)NULL,PYTHON_API_VERSION);
d = PyModule_GetDict(m);
PyExtensionClass_Export(d,"MultiMapping",MMtype);
if (PyErr_Occurred()) Py_FatalError("can't initialize module MultiMapping");
}
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