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44 lines
933 B
Mathematica
44 lines
933 B
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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% Try to use a functor with a higher-order argument with a term that has
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% lost its higher-order inst and become ground.
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%
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:- module functor_ho_inst_bad_3.
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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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:- implementation.
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:- type job
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---> job(pred(job_result::out, io::di, io::uo) is det).
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:- type job_result
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---> job_result_ok
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; job_result_failed.
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:- pred run(job::in, io::di, io::uo) is det.
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run(Job, !IO) :-
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Job = job(Pred),
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Pred(Result, !IO),
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io.write_line(Result, !IO).
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:- pred j1(job_result::out, io::di, io::uo) is det.
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j1(job_result_ok, !IO).
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main(!IO) :-
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get(J),
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Job = job(J),
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run(Job, !IO).
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:- pred get(pred(job_result, io, io)::out) is det.
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get(j1).
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