python: add mark_to_mark interface

Signed-off-by: NeilBrown <neil@brown.name>

diff --git a/lang-python.c b/lang-python.c
index 7ee0af33108f2612f73089ca7ce96b7a9257426f..acc3ab72171d1bfbaf1788600a473b884e768401 100644 (file)
--- a/lang-python.c
+++ b/lang-python.c
@@ -805,6 +805,24 @@ static void mark_dealloc(Mark *self)
        self->ob_type->tp_free((PyObject*)self);
 }
 
+static PyObject *Mark_to_mark(Mark *self, PyObject *args)
+{
+       Mark *other = NULL;
+       int ret = PyArg_ParseTuple(args, "O!", &MarkType, &other);
+       if (ret <= 0)
+               return NULL;
+       mark_to_mark(self->mark, other->mark);
+
+       Py_INCREF(Py_None);
+       return Py_None;
+}
+
+static PyMethodDef mark_methods[] = {
+       {"to_mark", (PyCFunction)Mark_to_mark, METH_VARARGS,
+        "Move one mark to another"},
+       {NULL}
+};
+
 static PyTypeObject MarkType = {
     PyObject_HEAD_INIT(NULL)
     0,                         /*ob_size*/
@@ -834,7 +852,7 @@ static PyTypeObject MarkType = {
     0,                         /* tp_weaklistoffset */
     (getiterfunc)mark_this,    /* tp_iter */
     (iternextfunc)Mark_next,   /* tp_iternext */
-    0,                         /* tp_methods */
+    mark_methods,              /* tp_methods */
     0,                         /* tp_members */
     mark_getseters,            /* tp_getset */
     0,                         /* tp_base */