nit: Added link to `CONTRIBUTING.md` from the README

[nit.git] / lib / core / text / flat.nit

diff --git a/lib/core/text/flat.nit b/lib/core/text/flat.nit
index b7e8e61..9e70321 100644 (file)
--- a/lib/core/text/flat.nit
+++ b/lib/core/text/flat.nit
@@ -369,6 +369,10 @@ redef class FlatText
                end
                return res
        end
+
+       redef fun copy_to_native(dst, n, src_off, dst_off) do
+               _items.copy_to(dst, n, first_byte + src_off, dst_off)
+       end
 end
 
 # Immutable strings of characters.
@@ -666,15 +670,15 @@ private class ASCIIFlatString
        end
 
        redef fun substring(from, count) do
+               var ln = _length
+               if count <= 0 then return ""
+               if (count + from) > ln then count = ln - from
                if count <= 0 then return ""
-
                if from < 0 then
                        count += from
-                       if count < 0 then return ""
+                       if count <= 0 then return ""
                        from = 0
                end
-               var ln = _length
-               if (count + from) > ln then count = ln - from
                return new ASCIIFlatString.full_data(_items, count, from + _first_byte, count)
        end