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106 lines
2.8 KiB
Mathematica
106 lines
2.8 KiB
Mathematica
%---------------------------------------------------------------------------%
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% vim: ts=4 sw=4 et ft=mercury
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%---------------------------------------------------------------------------%
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%
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% "Hello World" in Mercury, using nested modules.
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:- module nested3.
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:- interface.
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:- import_module io.
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:- pred main(io::di, io::uo) is det.
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:- module nested3.child.
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:- interface.
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:- import_module io.
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:- type foo
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---> bar
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; baz(int).
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:- pred hello(io::di, io::uo) is det.
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:- end_module nested3.child.
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:- implementation.
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%---------------------------------------------------------------------------%
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:- module nested3.child2.
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:- interface.
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:- import_module io.
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:- type foo
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---> bar
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; baz(int).
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:- pred hello(io::di, io::uo) is det.
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:- end_module nested3.child2.
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%---------------------------------------------------------------------------%
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:- module nested3.child.
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:- implementation.
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hello(!IO) :-
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io.write_string("nested3.child.hello\n", !IO).
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:- end_module nested3.child.
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:- module nested3.child2.
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:- implementation.
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hello(!IO) :-
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io.write_string("nested3.child2.hello\n", !IO).
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:- end_module nested3.child2.
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%---------------------------------------------------------------------------%
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% now we're back in the parent module.
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:- import_module nested3.child.
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:- use_module nested3.child2.
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:- import_module require.
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:- import_module std_util.
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:- import_module type_desc.
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:- type t1 == nested3.child.foo.
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:- type t2 == child.foo.
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:- type t3 == foo.
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:- type t4 == nested3.child2.foo.
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:- type t5 == nested3.child2.foo.
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main(!IO) :-
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nested3.child.hello(!IO),
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child.hello(!IO),
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hello(!IO),
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nested3.child2.hello(!IO),
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child2.hello(!IO),
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io.print("t1 = ", !IO), io.print_line(type_of(has_type_t1), !IO),
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io.print("t2 = ", !IO), io.print_line(type_of(has_type_t2), !IO),
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io.print("t3 = ", !IO), io.print_line(type_of(has_type_t3), !IO),
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io.print("t4 = ", !IO), io.print_line(type_of(has_type_t4), !IO),
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io.print("t5 = ", !IO), io.print_line(type_of(has_type_t5), !IO),
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io.print("has_type_t1 = ", !IO), io.print_line(has_type_t1, !IO),
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io.print("has_type_t2 = ", !IO), io.print_line(has_type_t2, !IO),
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io.print("has_type_t3 = ", !IO), io.print_line(has_type_t3, !IO),
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io.print("has_type_t4 = ", !IO), io.print_line(has_type_t4, !IO),
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io.print("has_type_t5 = ", !IO), io.print_line(has_type_t5, !IO).
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:- func has_type_t1 = t1.
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:- func has_type_t2 = t2.
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:- func has_type_t3 = t3.
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:- func has_type_t4 = t4.
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:- func has_type_t5 = t5.
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has_type_t1 = nested3.child.bar.
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has_type_t2 = child.bar.
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has_type_t3 = bar.
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has_type_t4 = nested3.child2.bar.
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has_type_t5 = child2.bar.
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:- end_module nested3.
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