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ecb5e4a9e6
tests/declarative_debugger/*.m:
tests/exceptions/*.m:
tests/general/*.m:
tests/grade_subdirs/*.m:
tests/purity/*.m:
tests/submodules/*.m:
tests/typeclasses/*.m:
Update programming style.
tests/declarative_debugger/*.inp:
Update line numbers in breakpoint commands.
tests/declarative_debugger/*.exp:
Update expected line numbers.
tests/exceptions/Mercury.options:
tests/general/Mercury.options:
Disable some warnings that are irrelevant to the test.
281 lines
6.5 KiB
Mathematica
281 lines
6.5 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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% Various checks that impurity declarations are treated properly.
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:- module purity.
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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 int.
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:- import_module list.
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:- import_module string.
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main(!IO) :-
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impure test1(!IO),
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impure test2(!IO),
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impure test3(!IO),
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impure test4(!IO),
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impure test1_inline(!IO),
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impure test2_inline(!IO),
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impure test3_inline(!IO),
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impure test4_inline(!IO).
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:- impure pred test1(io::di, io::uo) is det.
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:- impure pred test2(io::di, io::uo) is det.
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:- impure pred test3(io::di, io::uo) is det.
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:- impure pred test4(io::di, io::uo) is det.
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:- impure pred test1_inline(io::di, io::uo) is det.
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:- impure pred test2_inline(io::di, io::uo) is det.
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:- impure pred test3_inline(io::di, io::uo) is det.
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:- impure pred test4_inline(io::di, io::uo) is det.
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:- impure pred set_x(int::in) is det.
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:- pragma no_inline(set_x/1).
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:- pragma foreign_proc("C",
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set_x(X::in),
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[will_not_call_mercury],
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"
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x = X;
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").
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:- pragma foreign_proc("C#",
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set_x(X::in),
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[will_not_call_mercury],
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"
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x = X;
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").
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:- pragma foreign_proc("Java",
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set_x(X::in),
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[will_not_call_mercury],
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"
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x = X;
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").
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:- impure pred incr_x is det.
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:- pragma no_inline(incr_x/0).
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:- pragma foreign_proc("C",
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incr_x,
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[will_not_call_mercury],
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"
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++x;
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").
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:- pragma foreign_proc("C#",
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incr_x,
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[will_not_call_mercury],
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"
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++x;
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").
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:- pragma foreign_proc("Java",
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incr_x,
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[will_not_call_mercury],
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"
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++x;
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").
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:- semipure pred get_x(int::out) is det.
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:- pragma no_inline(get_x/1).
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:- pragma foreign_proc("C",
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get_x(X::out),
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[will_not_call_mercury, promise_semipure],
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"
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X = x;
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").
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:- pragma foreign_proc("C#",
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get_x(X::out),
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[will_not_call_mercury, promise_semipure],
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"
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X = x;
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").
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:- pragma foreign_proc("Java",
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get_x(X::out),
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[will_not_call_mercury, promise_semipure],
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"
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X = x;
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").
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:- impure pred set_x_inline(int::in) is det.
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:- pragma inline(set_x_inline/1).
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:- pragma foreign_proc("C",
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set_x_inline(X::in),
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[will_not_call_mercury],
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"
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x = X;
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").
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:- pragma foreign_proc("C#",
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set_x_inline(X::in),
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[will_not_call_mercury],
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"
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x = X;
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").
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:- pragma foreign_proc("Java",
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set_x_inline(X::in),
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[will_not_call_mercury],
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"
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x = X;
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").
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:- impure pred incr_x_inline is det.
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:- pragma inline(incr_x_inline/0).
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:- pragma foreign_proc("C",
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incr_x_inline,
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[will_not_call_mercury],
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"
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++x;
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").
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:- pragma foreign_proc("C#",
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incr_x_inline,
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[will_not_call_mercury],
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"
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++x;
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").
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:- pragma foreign_proc("Java",
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incr_x_inline,
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[will_not_call_mercury],
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"
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++x;
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").
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:- semipure pred get_x_inline(int::out) is det.
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:- pragma inline(get_x_inline/1).
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:- pragma foreign_proc("C",
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get_x_inline(X::out),
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[will_not_call_mercury, promise_semipure],
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"
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X=x;
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").
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:- pragma foreign_proc("C#",
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get_x_inline(X::out),
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[will_not_call_mercury, promise_semipure],
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"
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X=x;
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").
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:- pragma foreign_proc("Java",
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get_x_inline(X::out),
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[will_not_call_mercury, promise_semipure],
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"
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X=x;
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").
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:- pragma foreign_decl("C", "extern int x;").
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:- pragma foreign_code("C", "int x = 0;").
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:- pragma foreign_code("C#", "static int x = 0;").
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:- pragma foreign_code("Java", "static int x = 0;").
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% tempt compiler to optimize away duplicate semipure goals.
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test1(!IO) :-
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semipure get_x(X),
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io.format("%d\n", [i(X)], !IO),
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impure set_x(X + 1),
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semipure get_x(Y),
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io.format("%d\n", [i(Y)], !IO).
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% tempt compiler to optimize away duplicate impure goals, or to compile away
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% det goals with no outputs.
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test2(!IO) :-
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impure incr_x,
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impure incr_x,
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semipure get_x(Y),
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io.format("%d\n", [i(Y)], !IO).
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% tempt compiler to optimize away impure goal in branch that cannot succeed.
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test3(!IO) :-
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(
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impure incr_x,
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fail
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;
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semipure get_x(Y)
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),
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io.format("%d\n", [i(Y)], !IO).
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/***
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% This test used to be written as follows, but currently
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% the unique mode analysis is not smart enough to realize
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% that the disjuncts which update the I/O state won't
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% backtrack over I/O if the code is written like that.
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% tempt compiler to optimize away impure goal in branch that cannot succeed.
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test3(!IO) :-
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(
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impure incr_x,
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fail
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;
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semipure get_x(Y),
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io.format("%d\n", [i(Y)], !IO)
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).
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***/
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% regression test for problem with calls to implied modes of impure/semipure
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% preds reporting spurious warnings about impurity markers in the wrong place.
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test4(!IO) :-
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semipure get_x(OldX),
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impure incr_x,
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( if semipure get_x(OldX + 1) then
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io.write_string("test4 succeeds\n", !IO)
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else
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io.write_string("test4 fails\n", !IO)
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),
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impure set_x(OldX).
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% Now do it all again with inlining requested
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test1_inline(!IO) :-
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% Tempt compiler to optimize away duplicate semipure goals.
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semipure get_x_inline(X),
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io.format("%d\n", [i(X)], !IO),
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impure set_x_inline(X + 1),
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semipure get_x_inline(Y),
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io.format("%d\n", [i(Y)], !IO).
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test2_inline(!IO) :-
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% Tempt compiler to optimize away duplicate impure goals,
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% or to compile away det goals with no outputs.
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impure incr_x_inline,
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impure incr_x_inline,
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semipure get_x_inline(Y),
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io.format("%d\n", [i(Y)], !IO).
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test3_inline(!IO) :-
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% Tempt compiler to optimize away impure goal in branch that
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% cannot succeed.
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(
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impure incr_x_inline,
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fail
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;
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semipure get_x_inline(Y)
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),
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io.format("%d\n", [i(Y)], !IO).
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/***
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% This test used to be written as follows, but currently
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% the unique mode analysis is not smart enough to realize
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% that the disjuncts which update the I/O state won't
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% backtrack over I/O if the code is written like that.
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% tempt compiler to optimize away impure goal in branch that cannot succeed.
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test3_inline(!IO) :-
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(
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impure incr_x_inline,
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fail
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;
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semipure get_x_inline(Y),
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io.format("%d\n", [i(Y)], !IO)
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).
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***/
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% regression test for problem with calls to implied modes of impure/semipure
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% preds reporting spurious warnings about impurity markers in the wrong place.
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test4_inline(!IO) :-
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semipure get_x_inline(OldX),
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impure incr_x_inline,
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( if semipure get_x_inline(OldX + 1) then
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io.write_string("test4_inline succeeds\n", !IO)
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else
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io.write_string("test4_inline fails\n", !IO)
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),
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impure set_x_inline(OldX).
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