tests/test_ffi_c_more_callbacks.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 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 # FFI test with simple callbacks to Nit (within module)
  18 module test_ffi_c_more_callbacks
  19
  20 `{
  21 #include <stdio.h>
  22 `}
  23
  24 class A
  25         var a: Int is noautoinit
  26         init do a = 1234
  27         init alt(i: Int) do a = i
  28         fun to_i: Int do return a
  29 end
  30
  31 fun in1(i: Int) do print "Back in Nit: in1 {i}"
  32 fun in2(i: Float) do print "Back in Nit: in2"
  33
  34 fun out(i: Int, f: Float): Int import in1, in2, A, A.alt, A.to_i `{
  35         printf("From C, beginning out: %ld\n", i);
  36         Sys_in1(self, i);
  37         A a = new_A();
  38         A b = new_A_alt(10);
  39         printf("From C, a=%ld\n", A_to_i(a));
  40         printf("From C, b=%ld\n", A_to_i(b));
  41         printf("From C, end of out: %f\n", f);
  42         return 567;
  43 `}
  44
  45 print out(12345, 1.23445)