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3b7289d04b
Currently, we return a placeholder string ("foreignxx") if we attempt to look
up the functor of a foreign type in the C# or Java grades. For C, we return a
string of the form:
<<foreign(Name, Rep)>>
where Name is the type's Mercury name and Rep is its "value" as results from
casting it to (void *) and then using sprintf's %p conversion specifier. Do
something similar for both the C# and Java grades, except that for Rep we
return the output of the calling the toString() (ToString()) method. If the
object in question is a null reference then we return "null" for Rep.
Document how the predicates in the deconstruct module handle foreign types.
library/rtti_implementation.m:
Return more information about foreign type functors.
library/deconstruct.m:
Make the above changes to the documentation.
tests/hard_coded/csharp_print_foreign.{m,exp}:
tests/hard_coded/java_print_foreign.{m,exp}:
Tests of the new functionality in the C# and Java grades.
tests/hard_coded/Mmakefile:
Add the new tests.
Add a new category of test programs that are only run in the C# grades.
130 lines
3.5 KiB
Mathematica
130 lines
3.5 KiB
Mathematica
%---------------------------------------------------------------------------%
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% vim: ft=mercury ts=4 sw=4 et
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%---------------------------------------------------------------------------%
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%
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% Test io.print etc with foreign types in the Java grades.
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%
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%---------------------------------------------------------------------------%
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:- module java_print_foreign.
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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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%---------------------------------------------------------------------------%
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%---------------------------------------------------------------------------%
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:- implementation.
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main(!IO) :-
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io.print_line(get_foreign_bool, !IO),
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io.print_line(get_foreign_char, !IO),
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io.print_line(get_foreign_int, !IO),
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io.print_line(get_foreign_long, !IO),
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io.print_line(get_foreign_float, !IO),
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io.print_line(get_foreign_double, !IO),
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io.print_line(get_uuid, !IO),
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io.print_line(null_uuid, !IO),
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io.print_line(get_local_date, !IO),
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io.print_line(null_local_date, !IO).
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:- type foreign_bool.
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:- pragma foreign_type("Java", foreign_bool, "boolean").
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:- func get_foreign_bool = foreign_bool.
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:- pragma foreign_proc("Java",
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get_foreign_bool = (V::out),
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[will_not_call_mercury, promise_pure, thread_safe],
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"
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V = true;
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").
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:- type foreign_int.
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:- pragma foreign_type("Java", foreign_int, "int").
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:- func get_foreign_int = foreign_int.
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:- pragma foreign_proc("Java",
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get_foreign_int = (V::out),
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[will_not_call_mercury, promise_pure, thread_safe],
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"
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V = 561;
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").
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:- type foreign_char.
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:- pragma foreign_type("Java", foreign_char, "char").
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:- func get_foreign_char = foreign_char.
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:- pragma foreign_proc("Java",
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get_foreign_char = (V::out),
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[will_not_call_mercury, promise_pure, thread_safe],
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"
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V = 'A';
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").
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:- type foreign_long.
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:- pragma foreign_type("Java", foreign_long, "long").
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:- func get_foreign_long = foreign_long.
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:- pragma foreign_proc("Java",
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get_foreign_long = (V::out),
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[will_not_call_mercury, promise_pure, thread_safe],
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"
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V = 561L;
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").
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:- type foreign_float.
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:- pragma foreign_type("Java", foreign_float, "float").
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:- func get_foreign_float = foreign_float.
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:- pragma foreign_proc("Java",
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get_foreign_float = (V::out),
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[will_not_call_mercury, promise_pure, thread_safe],
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"
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V = java.lang.Float.MAX_VALUE;
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").
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:- type foreign_double.
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:- pragma foreign_type("Java", foreign_double, "double").
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:- func get_foreign_double = foreign_double.
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:- pragma foreign_proc("Java",
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get_foreign_double = (V::out),
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[will_not_call_mercury, promise_pure, thread_safe],
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"
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V = java.lang.Double.MAX_VALUE;
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").
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:- type uuid.
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:- pragma foreign_type("Java", uuid, "java.util.UUID").
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:- func get_uuid = uuid.
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:- pragma foreign_proc("Java",
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get_uuid = (U::out),
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[will_not_call_mercury, promise_pure, thread_safe],
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"
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U = java.util.UUID.fromString(""5f4fe224-2d69-49f0-9c72-acb9ec8400ef"");
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").
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:- func null_uuid = uuid.
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:- pragma foreign_proc("Java",
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null_uuid = (U::out),
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[will_not_call_mercury, promise_pure, thread_safe],
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"
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U = null;
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").
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:- type local_date.
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:- pragma foreign_type("Java", local_date, "java.time.LocalDate").
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:- func get_local_date = local_date.
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:- pragma foreign_proc("Java",
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get_local_date = (U::out),
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[will_not_call_mercury, promise_pure, thread_safe],
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"
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U = java.time.LocalDate.MAX;
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").
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:- func null_local_date = local_date.
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:- pragma foreign_proc("Java",
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null_local_date = (U::out),
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[will_not_call_mercury, promise_pure, thread_safe],
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"
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U = null;
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").
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