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82 lines
1.8 KiB
Mathematica
82 lines
1.8 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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% Regression test.
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% Versions rotd-2000-04-03 and earlier
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% got a software error when compiling this test.
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:- module unused_args.
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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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:- import_module std_util.
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:- pragma require_feature_set([memo]).
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main(!IO) :-
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test(!IO),
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test(!IO),
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test(!IO),
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test_no_input(!IO),
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test_no_input(!IO).
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:- pred test(io::di, io::uo) is det.
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:- pragma no_inline(test/2).
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test(!IO) :-
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foo_unused_args(42, Z),
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print(Z, !IO),
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nl(!IO),
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( if foo_unused_args_semi(42, Y) then
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print(Y, !IO),
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nl(!IO)
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else
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io.write_string("foo_unused_args failed\n", !IO)
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),
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( if foo_fail(X) then
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print(X, !IO),
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nl(!IO)
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else
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io.write_string("foo_fail failed, as expected\n", !IO)
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).
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:- pred foo_unused_args(int::in, string::out) is det.
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:- pragma memo(foo_unused_args/2).
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foo_unused_args(_, "foo").
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:- pred foo_unused_args_semi(int::in, string::out) is semidet.
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:- pragma memo(foo_unused_args_semi/2).
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foo_unused_args_semi(_, "bar") :- semidet_succeed.
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:- pred foo_fail(string::out) is semidet.
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:- pragma memo(foo_fail/1).
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foo_fail("FOO_FAIL SUCCEEDED (this is an error)") :-
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semidet_fail.
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:- pred test_no_input(io::di, io::uo) is det.
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:- pragma no_inline(test_no_input/2).
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test_no_input(!IO) :-
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no_input(X1),
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io.write_string(X1, !IO),
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io.nl(!IO).
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:- pred no_input(string::out) is det.
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:- pragma memo(no_input/1).
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:- pragma foreign_proc("C",
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no_input(X::out),
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[will_not_call_mercury, promise_pure],
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"
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printf(""no_input executed\\n"");
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X = (MR_String) (MR_Integer) ""no_input_output"";
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").
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