mirror of
https://github.com/Mercury-Language/mercury.git
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88047bbb45
tests/general/float_test.exp3:
tests/general/float_test.m:
tests/general/read_dir_regression.exp4:
tests/general/read_dir_regression.m:
tests/hard_coded/remove_file.exp2:
tests/hard_coded/remove_file.m:
Delete Erlang backend specific expected outputs.
tests/hard_coded/Mmakefile:
tests/hard_coded/erlang_deconstruct.exp:
tests/hard_coded/erlang_deconstruct.m:
tests/hard_coded/existential_list.exp:
tests/hard_coded/existential_list.m:
tests/valid/Mmakefile:
tests/valid/erl_ite_vars.m:
tests/valid/zf_erlang_bug.m:
Delete erlang target specific tests.
tests/*:
Delete Erlang foreign procs and foreign types.
103 lines
2.1 KiB
Mathematica
103 lines
2.1 KiB
Mathematica
%---------------------------------------------------------------------------%
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% vim: ts=4 sw=4 et ft=mercury
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%---------------------------------------------------------------------------%
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:- module impure_foreign.
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:- interface.
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:- import_module io.
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:- impure pred main(io::di, io::uo) is det.
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:- implementation.
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:- import_module require.
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main(!IO) :-
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% Inlining this call forces recomputation of purity for main/2
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% (because of the `:- pragma promise_pure').
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% In some versions of this compiler, this recomputation would
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% erroneously infer that the inlined calls to incr/1 below
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% were `pure'. Duplicate call elimination would then remove
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% all but one of them.
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unsafe_get(Val0),
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io.write_int(Val0, !IO),
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io.nl(!IO),
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impure incr(_),
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impure incr(_),
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impure incr(_),
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semipure get(Val),
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io.write_int(Val, !IO),
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io.nl(!IO).
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:- pragma foreign_decl("C",
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"
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int counter;
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").
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:- pragma foreign_code("C",
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"
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int counter = 1;
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").
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:- pragma foreign_code("C#", "static int counter = 1;").
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:- pragma foreign_code("Java", "static int counter = 1;").
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:- impure pred incr(int::out) is det.
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incr(_::out) :-
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error("incr/1 called for language other than C").
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:- pragma foreign_proc("C",
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incr(Val::out),
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[will_not_call_mercury],
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"
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counter++; Val = counter;
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").
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:- pragma foreign_proc("C#",
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incr(Val::out),
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[will_not_call_mercury],
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"
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counter++; Val = counter;
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").
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:- pragma foreign_proc("Java",
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incr(Val::out),
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[will_not_call_mercury],
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"
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counter++; Val = counter;
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").
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:- semipure pred get(int::out) is det.
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get(_::out) :-
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error("get/1 called for language other than C").
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:- pragma foreign_proc("C",
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get(Val::out),
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[will_not_call_mercury, promise_semipure],
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"
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Val = counter
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").
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:- pragma foreign_proc("C#",
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get(Val::out),
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[will_not_call_mercury, promise_semipure],
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"
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Val = counter;
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").
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:- pragma foreign_proc("Java",
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get(Val::out),
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[will_not_call_mercury, promise_semipure],
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"
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Val = counter;
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").
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:- pred unsafe_get(int::out) is det.
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:- pragma promise_pure(unsafe_get/1).
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unsafe_get(X) :-
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semipure get(X).
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