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64 lines
1.3 KiB
Mathematica
64 lines
1.3 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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% test case for the `--allow-stubs' option.
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%
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:- module allow_stubs.
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:- interface.
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:- import_module io.
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:- pred main(io::di, io::uo) is cc_multi.
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:- implementation.
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:- import_module exception.
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:- import_module univ.
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main(!IO) :-
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hello(!IO),
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trap_exceptions(how_are_you, !IO),
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trap_exceptions(going_today, !IO),
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goodbye(!IO).
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hello(!IO) :-
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print("hello world", !IO),
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nl(!IO).
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:- pred goodbye(io::di, io::uo) is det.
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goodbye -->
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print("goodbye"), nl.
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:- pred how_are_you(io::di, io::uo) is det.
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:- mode going_today(di, uo) is det.
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going_today(!IO) :-
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print("going ", !IO),
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today(!IO).
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:- pred today(io::di, io::uo) is det.
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:- pred unused1(T::di, T::uo) is det.
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:- pred unused2(T::di, T::uo) is det.
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unused1(IO0, IO) :-
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unused2(IO0, IO).
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:- impure pred imp(io::di, io::uo) is det.
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:- mode trap_exceptions(pred(di, uo) is det, di, uo) is cc_multi.
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trap_exceptions(IOGoal, !IO) :-
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try_io((pred({}::out, di, uo) is det --> IOGoal), Res, !IO),
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(
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Res = succeeded({})
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;
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Res = exception(Exception),
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print("[caught exception: ", !IO),
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print(univ_value(Exception), !IO),
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print("]\n", !IO)
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).
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