Files
mercury/tests/hard_coded/export_test2.m
Zoltan Somogyi 2bd7c5ee3e Rename X's aux modules as X_helper_N in hard_coded.
tests/hard_coded/*.m:
    Rename modules as mentioned above.

    In a few cases, where the main module's name itself had a suffix,
    such as "_mod_a" or "_main", remove that suffix. This entails
    renaming the .exp file as well. (In some cases, this meant that
    the name of a helper module was "taken over" by the main module
    of the test case.)

    Update all references to the moved modules.

    General updates to programming style, such as

    - replacing DCG notation with state var notation
    - replacing (C->T;E) with (if C then T else E)
    - moving pred/func declarations to just before their code
    - replacing io.write/io.nl sequences with io.write_line
    - replacing io.print/io.nl sequences with io.print_line
    - fixing too-long lines
    - fixing grammar errors in comments

tests/hard_coded/Mmakefile:
tests/hard_coded/Mercury.options:
    Update all references to the moved modules.

    Enable the constant_prop_int test case. The fact that it wasn't enabled
    before is probably an accident. (When constant_prop_int.m was created,
    the test case was added to a list in the Mmakefile, but that list
    was later removed due to never being referenced.)

tests/hard_coded/constant_prop_int.{m,exp}:
    Delete the calls to shift operations with negative shift amounts,
    since we have added a compile-time error for these since the test
    was originally created.
2023-06-16 08:33:22 +02:00

114 lines
2.8 KiB
Mathematica

%---------------------------------------------------------------------------%
% vim: ts=4 sw=4 et ft=mercury
%---------------------------------------------------------------------------%
:- module export_test2.
:- interface.
:- import_module export_test2.nested_1.
:- import_module int.
:- import_module io.
:- pred main(io::di, io::uo) is det.
:- pred foo(io.output_stream::in, io.output_stream::out,
foo::in, foo::out) is det.
:- pred bar(io.output_stream::in, io.output_stream::out,
foo::in, foo::out) is det.
:- module export_test2.nested_1.
:- interface.
:- import_module enum.
:- type foo.
:- instance enum(foo).
:- end_module export_test2.nested_1.
:- implementation.
:- import_module enum.
:- import_module require.
main(!IO) :-
io.stdout_stream(Stream0, !IO),
( if Foo = from_int(41) then
bar(Stream0, Stream, Foo, X),
io.write(Stream, to_int(X), !IO),
io.write_char(Stream, '\n', !IO)
else
error("from_int failed")
).
foo(S, S, X0, X) :-
( if X1 = from_int(to_int(X0) + 1) then
X = X1
else
error("from_int failed")
).
:- pragma foreign_decl("C", "
#include ""mercury_library_types.h""
/*
** Make sure the foreign type definitions of io.input_stream
** and export_test2.nested_1.foo are available here.
** If not, the automatically generated definition of foo() will be
**
** void foo(MR_Word, MR_Word *, MR_Word, MR_Word *);
*/
void foo(MercuryFilePtr, MercuryFilePtr *, int, int *);
").
:- pragma foreign_export("C", foo(in, out, in, out), "foo").
:- pragma foreign_proc("C",
bar(S::in, T::out, X::in, Y::out),
[may_call_mercury, promise_pure],
"
foo(S, &T, X, &Y);
").
:- pragma foreign_proc("C#",
bar(S::in, T::out, X::in, Y::out),
[may_call_mercury, promise_pure],
"
export_test2.mercury_code.foo(S, ref T, X, ref Y);
").
:- module export_test2.nested_1.
:- implementation.
:- type foo
---> foo(int).
:- pragma foreign_type("C", foo, "MT_Foo").
% This needs to be visible in export_test2 for any use
% of the foreign type to work.
:- pragma foreign_decl("C", "typedef int MT_Foo;").
:- instance enum(foo) where [
to_int(X) = foo_to_int(X),
from_int(X) = foo_from_int(X)
].
:- func foo_to_int(foo) = int.
foo_to_int(foo(Int)) = Int.
:- pragma foreign_proc("C",
foo_to_int(Foo::in) = (Int::out),
[will_not_call_mercury, promise_pure, thread_safe],
"
Int = Foo;
").
:- func foo_from_int(int) = foo.
foo_from_int(Int) = foo(Int).
:- pragma foreign_proc("C",
foo_from_int(Int::in) = (Foo::out),
[will_not_call_mercury, promise_pure, thread_safe],
"
Foo = Int;
").
:- end_module export_test2.nested_1.