tests/test_ffi_c_super.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 2011-2013 Alexis Laferrière <alexis.laf@xymus.net>
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 class A
  18         fun id : String do return "A"
  19 end
  20
  21 class B
  22         super A
  23
  24         redef fun id : String import super, CString.to_s, String.to_cstring `{
  25                 char *new_name;
  26                 char *prefix = "B special ";
  27                 char *super_name = String_to_cstring( B_id___super( self ) );
  28
  29                 new_name = calloc( strlen( prefix )+strlen( super_name )+1, sizeof(char) );
  30                 strcpy( new_name, prefix );
  31                 strcpy( new_name+strlen( prefix ), super_name );
  32                 new_name[ strlen( prefix )+strlen( super_name ) ] = '\0';
  33
  34                 return CString_to_s( new_name );
  35         `}
  36 end
  37
  38 var a = new A
  39 print a.id
  40
  41 var b = new B
  42 print b.id