%---------------------------------------------------------------------------%
% vim: ts=4 sw=4 et ft=mercury
%---------------------------------------------------------------------------%
%
% test case for calling an exported Mercury proc from pragma c_code.
%
% author: dgj

:- module export_test.
:- interface.

:- import_module int.
:- import_module io.

:- pred main(io::di, io::uo) is det.

:- pred foo(int::in, int::out) is det.

:- pred bar(int::in, int::out) is det.

:- implementation.

main(!IO) :-
    bar(41, X),
    io.write_line(X, !IO).

foo(X, X + 1).

:- pragma foreign_export("C", foo(in, out), "foo").
:- pragma foreign_export("C#", foo(in, out), "foo").
:- pragma foreign_export("Java", foo(in, out), "foo").

:- pragma foreign_proc("C",
    bar(X::in, Y::out),
    [promise_pure, may_call_mercury],
"
    foo(X, &Y);
").
:- pragma foreign_proc("C#",
    bar(X::in, Y::out),
    [may_call_mercury, promise_pure],
"
    Y = export_test.foo(X);
").
:- pragma foreign_proc("Java",
    bar(X::in, Y::out),
    [may_call_mercury, promise_pure],
"
    Y = export_test.foo(X);
").