[Wisp-cvs] wisp/users/dig bits.py,1.12,1.13

[<di...@us...>]

Update of /cvsroot/wisp/wisp/users/dig
In directory sc8-pr-cvs1:/tmp/cvs-serv2388

Modified Files:
	bits.py 
Log Message:
extracted Bits.set_single_item from Bits.__setitem__

Index: bits.py
===================================================================
RCS file: /cvsroot/wisp/wisp/users/dig/bits.py,v
retrieving revision 1.12
retrieving revision 1.13
diff -u -d -r1.12 -r1.13
--- bits.py	27 Apr 2003 07:53:02 -0000	1.12
+++ bits.py	27 Apr 2003 08:24:50 -0000	1.13
@@ -49,6 +49,14 @@
                 tpl = this._byte_order + {2: 'H', 4: 'L'}[step]
                 return unpack(tpl, data)[0]
         else: return ord(this._contents[index])
+    def set_single_item (this, index, step, value): # for easy extension
+        if index < 0 or index > len(this._contents):
+            raise IndexError, index
+        if step == 1: this._contents[start] = chr(value % 0x100)
+        else:
+            tpl = this._byte_order + {2: 'H', 4: 'L'}[step]
+            this._contents[index : index + step] = \
+                array('c', pack(tpl, value % (1L << (step << 3))))
     def __setitem__ (this, index, value):
         if isinstance(index, SliceType):
             start, stop, step = index.start, index.stop, index.step
@@ -62,12 +70,6 @@
             if stop != None or not step in (1, 2, 4):
                 raise 'Bad slice for Bits.__setitem__', index
             if start > len(this._contents): raise IndexError, start
-            if step == 1: this._contents[start] = chr(value % 0x100)
-            else:
-                tpl = this._byte_order + {2: 'H', 4: 'L'}[step]
-                this._contents[start : start + step] = \
-                    array('c', pack(tpl, value % (1L << (step << 3))))
+            this.set_single_item(start, step, value)
         else:
-            if index > len(this._contents):
-                raise IndexError, index
             this._contents[index] = chr(value % 0x100)