From 14ed0b2cd3d814874b7ce03201fd4b634dbec63e Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Thu, 29 Sep 1994 09:50:09 +0000
Subject: 	* Modules/xxmodule.c: integrated with xxobject.c by Jack

	* Modules/(posix,socket}module.c: more NT changes
---
 Modules/xxmodule.c | 145 ++++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 132 insertions(+), 13 deletions(-)

(limited to 'Modules/xxmodule.c')

diff --git a/Modules/xxmodule.c b/Modules/xxmodule.c
index 4e81810cf4..52f48954e5 100644
--- a/Modules/xxmodule.c
+++ b/Modules/xxmodule.c
@@ -22,11 +22,129 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 ******************************************************************/
 
-/* xx module */
+/* Use this file as a template to start implementing a module that
+   also declares objects types. All occurrences of 'xxo' should be changed
+   to something reasonable for your objects. After that, all other
+   occurrences of 'xx' should be changed to something reasonable for your
+   module. If your module is named foo your sourcefile should be named
+   foomodule.c.
+   
+   You will probably want to delete all references to 'x_attr' and add
+   your own types of attributes instead.  Maybe you want to name your
+   local variables other than 'self'.  If your object type is needed in
+   other files, you'll have to create a file "foobarobject.h"; see
+   intobject.h for an example. */
+
+/* Xxo objects */
 
 #include "allobjects.h"
-#include "modsupport.h"
+#include "modsupport.h"		/* For getargs() etc. */
 
+static object *ErrorObject;
+
+typedef struct {
+	OB_HEAD
+	object	*x_attr;	/* Attributes dictionary */
+} xxoobject;
+
+staticforward typeobject Xxotype;
+
+#define is_xxoobject(v)		((v)->ob_type == &Xxotype)
+
+static xxoobject *
+newxxoobject(arg)
+	object *arg;
+{
+	xxoobject *self;
+	self = NEWOBJ(xxoobject, &Xxotype);
+	if (self == NULL)
+		return NULL;
+	self->x_attr = NULL;
+	return self;
+}
+
+/* Xxo methods */
+
+static void
+xxo_dealloc(self)
+	xxoobject *self;
+{
+	XDECREF(self->x_attr);
+	DEL(self);
+}
+
+static object *
+xxo_demo(self, args)
+	xxoobject *self;
+	object *args;
+{
+	if (!getnoarg(args))
+		return NULL;
+	INCREF(None);
+	return None;
+}
+
+static struct methodlist xxo_methods[] = {
+	{"demo",	(method)xxo_demo},
+	{NULL,		NULL}		/* sentinel */
+};
+
+static object *
+xxo_getattr(self, name)
+	xxoobject *self;
+	char *name;
+{
+	if (self->x_attr != NULL) {
+		object *v = dictlookup(self->x_attr, name);
+		if (v != NULL) {
+			INCREF(v);
+			return v;
+		}
+	}
+	return findmethod(xxo_methods, (object *)self, name);
+}
+
+static int
+xxo_setattr(self, name, v)
+	xxoobject *self;
+	char *name;
+	object *v;
+{
+	if (self->x_attr == NULL) {
+		self->x_attr = newdictobject();
+		if (self->x_attr == NULL)
+			return -1;
+	}
+	if (v == NULL) {
+		int rv = dictremove(self->x_attr, name);
+		if (rv < 0)
+			err_setstr(AttributeError,
+			        "delete non-existing xxo attribute");
+		return rv;
+	}
+	else
+		return dictinsert(self->x_attr, name, v);
+}
+
+static typeobject Xxotype = {
+	OB_HEAD_INIT(&Typetype)
+	0,			/*ob_size*/
+	"xxo",			/*tp_name*/
+	sizeof(xxoobject),	/*tp_basicsize*/
+	0,			/*tp_itemsize*/
+	/* methods */
+	(destructor)xxo_dealloc, /*tp_dealloc*/
+	0,			/*tp_print*/
+	(getattrfunc)xxo_getattr, /*tp_getattr*/
+	(setattrfunc)xxo_setattr, /*tp_setattr*/
+	0,			/*tp_compare*/
+	0,			/*tp_repr*/
+	0,			/*tp_as_number*/
+	0,			/*tp_as_sequence*/
+	0,			/*tp_as_mapping*/
+	0,			/*tp_hash*/
+};
+/* --------------------------------------------------------------------- */
 
 /* Function of two integers returning integer */
 
@@ -44,19 +162,22 @@ xx_foo(self, args)
 }
 
 
-/* Function of no arguments returning None */
+/* Function of no arguments returning new xxo object */
 
 static object *
-xx_bar(self, args)
+xx_new(self, args)
 	object *self; /* Not used */
 	object *args;
 {
 	int i, j;
+	xxoobject *rv;
+	
 	if (!getnoarg(args))
 		return NULL;
-	/* XXX Do something here */
-	INCREF(None);
-	return None;
+	rv = newxxoobject(args);
+	if ( rv == NULL )
+	    return NULL;
+	return (object *)rv;
 }
 
 
@@ -64,7 +185,7 @@ xx_bar(self, args)
 
 static struct methodlist xx_methods[] = {
 	{"foo",		xx_foo},
-	{"bar",		xx_bar},
+	{"new",		xx_new},
 	{NULL,		NULL}		/* sentinel */
 };
 
@@ -74,17 +195,15 @@ static struct methodlist xx_methods[] = {
 void
 initxx()
 {
-	object *m, *d, *x;
+	object *m, *d;
 
 	/* Create the module and add the functions */
 	m = initmodule("xx", xx_methods);
 
 	/* Add some symbolic constants to the module */
 	d = getmoduledict(m);
-	x = newstringobject("xx.error");
-	dictinsert(d, "error", x);
-	x = newintobject(42L);
-	dictinsert(d, "magic", x);
+	ErrorObject = newstringobject("xx.error");
+	dictinsert(d, "error", ErrorObject);
 
 	/* Check for errors */
 	if (err_occurred())
-- 
cgit v1.2.1