Files
mercury/tests/submodules/nested.m
Zoltan Somogyi ecb5e4a9e6 Update the style of many test cases.
tests/declarative_debugger/*.m:
tests/exceptions/*.m:
tests/general/*.m:
tests/grade_subdirs/*.m:
tests/purity/*.m:
tests/submodules/*.m:
tests/typeclasses/*.m:
    Update programming style.

tests/declarative_debugger/*.inp:
    Update line numbers in breakpoint commands.
tests/declarative_debugger/*.exp:
    Update expected line numbers.

tests/exceptions/Mercury.options:
tests/general/Mercury.options:
    Disable some warnings that are irrelevant to the test.
2021-07-25 23:26:17 +10:00

101 lines
2.5 KiB
Mathematica

%---------------------------------------------------------------------------%
% vim: ts=4 sw=4 et ft=mercury
%---------------------------------------------------------------------------%
%
% "Hello World" in Mercury, using nested modules.
:- module nested.
:- interface.
:- import_module io.
:- pred main(io::di, io::uo) is det.
:- implementation.
%---------------------------------------------------------------------------%
:- module nested.child.
:- interface.
:- import_module io.
:- type foo
---> bar
; baz(int).
:- pred hello(io::di, io::uo) is det.
:- implementation.
hello(!IO) :-
io.write_string("nested.child.hello\n", !IO).
:- end_module nested.child.
%---------------------------------------------------------------------------%
:- module nested.child2.
:- interface.
:- import_module io.
:- type foo
---> bar
; baz(int).
:- pred hello(io::di, io::uo) is det.
:- implementation.
hello(!IO) :-
io.write_string("nested.child2.hello\n", !IO).
:- end_module nested.child2.
%---------------------------------------------------------------------------%
% Now we are back in the parent module.
:- import_module nested.child.
:- use_module nested.child2.
:- import_module require.
:- import_module std_util.
:- import_module type_desc.
:- type t1 == nested.child.foo.
:- type t2 == child.foo.
:- type t3 == foo.
:- type t4 == nested.child2.foo.
:- type t5 == nested.child2.foo.
main(!IO) :-
nested.child.hello(!IO),
child.hello(!IO),
hello(!IO),
nested.child2.hello(!IO),
child2.hello(!IO),
io.print("t1 = ", !IO), io.print_line(type_of(has_type_t1), !IO),
io.print("t2 = ", !IO), io.print_line(type_of(has_type_t2), !IO),
io.print("t3 = ", !IO), io.print_line(type_of(has_type_t3), !IO),
io.print("t4 = ", !IO), io.print_line(type_of(has_type_t4), !IO),
io.print("t5 = ", !IO), io.print_line(type_of(has_type_t5), !IO),
io.print("has_type_t1 = ", !IO), io.print_line(has_type_t1, !IO),
io.print("has_type_t2 = ", !IO), io.print_line(has_type_t2, !IO),
io.print("has_type_t3 = ", !IO), io.print_line(has_type_t3, !IO),
io.print("has_type_t4 = ", !IO), io.print_line(has_type_t4, !IO),
io.print("has_type_t5 = ", !IO), io.print_line(has_type_t5, !IO).
:- func has_type_t1 = t1.
:- func has_type_t2 = t2.
:- func has_type_t3 = t3.
:- func has_type_t4 = t4.
:- func has_type_t5 = t5.
has_type_t1 = nested.child.bar.
has_type_t2 = child.bar.
has_type_t3 = bar.
has_type_t4 = nested.child2.bar.
has_type_t5 = child2.bar.
:- end_module nested.