Merge: Markdown location

[nit.git] / lib / standard / ropes.nit

diff --git a/lib/standard/ropes.nit b/lib/standard/ropes.nit
index 7f1ba2b..5ac6ee2 100644 (file)
--- a/lib/standard/ropes.nit
+++ b/lib/standard/ropes.nit
@@ -157,6 +157,27 @@ private class Concat
                        return new Concat(left, r + s)
                end
        end
+
+       redef fun copy_to_native(dest, n, src_offset, dest_offset) do
+               var remlen = n
+               var subs = new RopeSubstrings.from(self, src_offset)
+               var st = src_offset - subs.pos
+               var off = dest_offset
+               while n > 0 do
+                       var it = subs.item
+                       if n > it.length then
+                               var cplen = it.length - st
+                               it.items.copy_to(dest, cplen, st, off)
+                               off += cplen
+                               n -= cplen
+                       else
+                               it.items.copy_to(dest, n, st, off)
+                               n = 0
+                       end
+                       subs.next
+                       st = 0
+               end
+       end
 end
 
 # Mutable `Rope`, optimized for concatenation operations