Issue 5167/6: Changes: show \markup xxx = ... \etc assignments

[lilypond.git] / lily / dimension-cache.cc

diff --git a/lily/dimension-cache.cc b/lily/dimension-cache.cc
index c6fdfe0a3bca8b9ad61e28cf3b8e2885f925dff3..33294db5e62cd37c9a3253554b083f94f6b023de 100644 (file)
--- a/lily/dimension-cache.cc
+++ b/lily/dimension-cache.cc
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 1998--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 1998--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
   LilyPond is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -17,7 +17,6 @@
   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-
 #include "dimension-cache.hh"
 
 #include "warn.hh"
@@ -31,6 +30,16 @@ Dimension_cache::Dimension_cache (Dimension_cache const &d)
   extent_ = d.extent_ ? new Interval (*d.extent_) : 0;
 }
 
+Dimension_cache &
+Dimension_cache::operator = (Dimension_cache const &d)
+{
+  clear ();
+  offset_ = d.offset_ ? new Real (*d.offset_) : 0;
+  parent_ = d.parent_;
+  extent_ = d.extent_ ? new Interval (*d.extent_) : 0;
+  return *this;
+}
+
 Dimension_cache::Dimension_cache ()
 {
   init ();