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https://github.com/Mercury-Language/mercury.git
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1f6d83692a
tests/hard_coded/*.m:
Update programming style, unless doing so would change
the meaning of the test, in particular:
- use '.' as a module qualifier in place of '__'
- use {write,print}_line where appropriate
- use if-then-else in place of C -> T ; E
- use state variables in place of DCGs
tests/hard_coded/dir_test.m:
Document what the expected outputs correspond to.
Use a uniform module qualifier in the output.
tests/hard_coded/dir_test.exp*:
Conform to the above change.
133 lines
4.0 KiB
Mathematica
133 lines
4.0 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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% equality_pred_which_requires_boxing
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%
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% Check that the unification predicate we generate handles the case where
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% the arguments are boxed and unboxed correctly.
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:- module equality_pred_which_requires_boxing.
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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 type_which_needs_boxing.
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:- pragma foreign_type(c, type_which_needs_boxing, "double")
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where equality is unify_ft.
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:- pragma foreign_type("C#", type_which_needs_boxing,
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"System.Double") where equality is unify_ft.
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:- pragma foreign_type(java, type_which_needs_boxing,
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"Double") where equality is unify_ft.
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:- type type_which_needs_boxing(T).
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:- pragma foreign_type(c, type_which_needs_boxing(T), "double")
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where equality is unify_ft_T.
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:- pragma foreign_type("C#", type_which_needs_boxing(T),
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"System.Double")
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where equality is unify_ft_T.
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:- pragma foreign_type(java, type_which_needs_boxing(T), "Double")
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where equality is unify_ft_T.
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main(!IO) :-
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% Test a builtin type which requires boxing.
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A = float_a,
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B = float_b,
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unify("float (boxed)", A, B, !IO),
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( if A = B then
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io.write_string("float (unboxed): true\n", !IO)
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else
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io.write_string("float (unboxed): false\n", !IO)
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),
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% Test a simple foreign_type.
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X = create(A),
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Y = create(B),
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unify("foreign_type (boxed)", X, Y, !IO),
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( if X = Y then
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io.write_string("foreign_type (unboxed): true\n", !IO)
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else
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io.write_string("foreign_type (unboxed): false\n", !IO)
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),
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% Test a foreign_type which requires a type_info.
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G = create_T(A),
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H = create_T(B),
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unify("foreign_type(T) (boxed)", G, H, !IO),
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( if G = H then
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io.write_string("foreign_type(T) (unboxed): true\n", !IO)
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else
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io.write_string("foreign_type(T) (unboxed): false\n", !IO)
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).
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% Here we pass in a generic type, so if needed the input
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% arguments will have been boxed. We then test if the
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% unification pred handles this correctly.
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:- pred unify(string::in, T::in, T::in, io::di, io::uo) is det.
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unify(S, X, Y, !IO) :-
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io.write_string(S, !IO),
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( if X = Y then
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io.write_string(": true\n", !IO)
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else
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io.write_string(": false\n", !IO)
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).
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:- func create(float) = type_which_needs_boxing.
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:- pragma foreign_proc("C", create(X::in) = (Y::out), [promise_pure], "
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Y = X;
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").
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:- pragma foreign_proc("C#", create(X::in) = (Y::out), [promise_pure], "
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Y = X;
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").
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:- pragma foreign_proc("Java", create(X::in) = (Y::out), [promise_pure], "
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Y = X;
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").
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:- func create_T(float) = type_which_needs_boxing(int).
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:- pragma foreign_proc("C", create_T(X::in) = (Y::out), [promise_pure], "
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Y = X;
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").
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:- pragma foreign_proc("C#", create_T(X::in) = (Y::out), [promise_pure], "
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Y = X;
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").
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:- pragma foreign_proc("Java", create_T(X::in) = (Y::out), [promise_pure], "
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Y = X;
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").
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:- pred unify_ft(type_which_needs_boxing::in, type_which_needs_boxing::in)
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is semidet.
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:- pragma foreign_proc("C", unify_ft(X::in, Y::in), [promise_pure], "
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SUCCESS_INDICATOR = (X == Y);
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").
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:- pragma foreign_proc("C#", unify_ft(X::in, Y::in), [promise_pure], "
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SUCCESS_INDICATOR = (X == Y);
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").
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:- pragma foreign_proc("Java", unify_ft(X::in, Y::in), [promise_pure], "
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SUCCESS_INDICATOR = X.equals(Y);
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").
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:- pred unify_ft_T(type_which_needs_boxing(T)::in,
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type_which_needs_boxing(T)::in) is semidet.
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:- pragma foreign_proc("C", unify_ft_T(X::in, Y::in), [promise_pure], "
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SUCCESS_INDICATOR = (X == Y);
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").
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:- pragma foreign_proc("C#", unify_ft_T(X::in, Y::in), [promise_pure], "
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SUCCESS_INDICATOR = (X == Y);
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").
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:- pragma foreign_proc("Java", unify_ft_T(X::in, Y::in), [promise_pure], "
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SUCCESS_INDICATOR = X.equals(Y);
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").
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:- pragma no_inline(float_a/0).
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:- func float_a = float.
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float_a = 1.0.
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:- pragma no_inline(float_b/0).
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:- func float_b = float.
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float_b = 1.0.
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