lib/standard: factorize File*::close

Signed-off-by: Jean Privat <jean@pryen.org>

diff --git a/lib/standard/file.nit b/lib/standard/file.nit
index a2856ae..7052c15 100644 (file)
--- a/lib/standard/file.nit
+++ b/lib/standard/file.nit
@@ -47,6 +47,21 @@ abstract class FileStream
        # File descriptor of this file
        fun fd: Int do return _file.fileno
 
+       redef fun close
+       do
+               if _file == null then return
+               if _file.address_is_null then
+                       if last_error != null then return
+                       last_error = new IOError("Cannot close unopened file")
+                       return
+               end
+               var i = _file.io_close
+               if i != 0 then
+                       last_error = new IOError("Close failed due to error {sys.errno.strerror}")
+               end
+               _file = null
+       end
+
        # Sets the buffering mode for the current FileStream
        #
        # If the buf_size is <= 0, its value will be 512 by default
@@ -89,11 +104,9 @@ class FileReader
 
        redef fun close
        do
-               if _file == null or _file.address_is_null then return
-               var i = _file.io_close
+               super
                _buffer.clear
                end_reached = true
-               _file = null
        end
 
        redef fun fill_buffer
@@ -154,19 +167,8 @@ class FileWriter
 
        redef fun close
        do
-               if _file == null then return
-               if _file.address_is_null then
-                       if last_error != null then return
-                       last_error = new IOError("Cannot close unopened write stream")
-                       _is_writable = false
-                       return
-               end
-               var i = _file.io_close
-               if i != 0 then
-                       last_error = new IOError("Close failed due to error {sys.errno.strerror}")
-               end
+               super
                _is_writable = false
-               _file = null
        end
        redef var is_writable = false