# HG changeset patch
# User deba
# Date 1114598223 0
# Node ID b87aa8f0feb84709f2e0fefc1447dbabd7145074
# Parent  5b46af577b234a4db184b2521639bf5403a7485d
Changed input operator.

diff -r 5b46af577b23 -r b87aa8f0feb8 src/lemon/xy.h
--- a/src/lemon/xy.h	Tue Apr 26 15:50:30 2005 +0000
+++ b/src/lemon/xy.h	Wed Apr 27 10:37:03 2005 +0000
@@ -159,11 +159,25 @@
   ///\relates xy
   ///
   template<typename T>
-  inline
-  std::istream& operator>>(std::istream &is, xy<T> &z)
-  {
-
-    is >> z.x >> z.y;
+  inline std::istream& operator>>(std::istream &is, xy<T> &z) {
+    char c;
+    if (is >> c) {
+      if (c != '(') is.putback(c);
+    } else {
+      is.clear();
+    }
+    if (!(is >> z.x)) return is;
+    if (is >> c) {
+      if (c != ',') is.putback(c);
+    } else {
+      is.clear();
+    }
+    if (!(is >> z.y)) return is;
+    if (is >> c) {
+      if (c != ')') is.putback(c);
+    } else {
+      is.clear();
+    }
     return is;
   }
 
@@ -173,8 +187,7 @@
   ///\relates xy
   ///
   template<typename T>
-  inline
-  std::ostream& operator<<(std::ostream &os, xy<T> z)
+  inline std::ostream& operator<<(std::ostream &os, const xy<T>& z)
   {
     os << "(" << z.x << ", " << z.y << ")";
     return os;