catacomb/__init__.py: Add printing for points on known curves.

Now the coordinates print correctly as field elements.

diff --git a/catacomb/__init__.py b/catacomb/__init__.py
index f9436802e5a360da1a7ebcf973596efeb2abaa0b..c646fe8c2f4ec843706f816a4d6404f1adba8449 100644 (file)
--- a/catacomb/__init__.py
+++ b/catacomb/__init__.py
@@ -384,6 +384,16 @@ class _tmp:
   def __str__(me):
     if not me: return 'inf'
     return '(%s, %s)' % (me.x, me.y)
   def __str__(me):
     if not me: return 'inf'
     return '(%s, %s)' % (me.x, me.y)

+  def _repr_pretty_(me, pp, cyclep):
+    if cyclep:
+      pp.text('...')
+    elif not me:
+      pp.text('inf')
+    else:
+      ind = _pp_bgroup(pp, '(')
+      pp.pretty(me.x); pp.text(','); pp.breakable()
+      pp.pretty(me.y)
+      pp.end_group(ind, ')')

 _augment(ECPtCurve, _tmp)
 
 ###--------------------------------------------------------------------------
 _augment(ECPtCurve, _tmp)
 
 ###--------------------------------------------------------------------------