Files
mercury/tests/hard_coded/existential_float.m
Zoltan Somogyi 33eb3028f5 Clean up the tests in half the test directories.
tests/accumulator/*.m:
tests/analysis_*/*.m:
tests/benchmarks*/*.m:
tests/debugger*/*.{m,exp,inp}:
tests/declarative_debugger*/*.{m,exp,inp}:
tests/dppd*/*.m:
tests/exceptions*/*.m:
tests/general*/*.m:
tests/grade_subdirs*/*.m:
tests/hard_coded*/*.m:
    Make these tests use four-space indentation, and ensure that
    each module is imported on its own line. (I intend to use the latter
    to figure out which subdirectories' tests can be executed in parallel.)

    These changes usually move code to different lines. For the debugger tests,
    specify the new line numbers in .inp files and expect them in .exp files.
2015-02-14 20:14:03 +11:00

107 lines
2.4 KiB
Mathematica

%---------------------------------------------------------------------------%
% vim: ts=4 sw=4 et ft=mercury
%---------------------------------------------------------------------------%
%
% This module tests the use of existential types,
% including type inference,
% but not including type class constraints.
% This test is designed to test boxing/unboxing
% of types with non-word size, i.e. chars and floats.
:- module existential_float.
:- interface.
:- import_module io.
:- import_module univ.
:- type foo
---> left
; right.
:- some [T] func call_univ_value(univ) = T.
:- some [T] func my_exist_c = T.
:- some [T] func my_exist_f = T.
:- some [T] func my_exist_fn = T.
:- some [T] pred my_exist_p_multi(T::out) is multi.
:- some [T] pred my_exist_p_semi(foo::in, T::out) is semidet.
:- pred main(io__state::di, state::uo) is cc_multi.
:- implementation.
:- import_module int.
:- import_module solutions.
main -->
foo(univ(my_exist_c)),
foo(univ(my_exist_f)),
foo(univ(my_exist_fn)),
foo(univ(call_my_exist_c)),
foo(univ(call_my_exist_f)),
foo(univ(call_my_exist_fn)),
write(my_exist_c), nl,
write(my_exist_f), nl,
write(my_exist_fn), nl,
write(call_my_exist_c), nl,
write(call_my_exist_f), nl,
write(call_my_exist_fn), nl,
( { call_my_exist_p_semi(left, X1) } ->
write(X1), nl
;
print("no."), nl
),
( { call_my_exist_p_semi(right, X2) } ->
write(X2), nl
;
print("no."), nl
),
( { my_exist_p_semi(left, X3) } ->
write(X3), nl
;
print("no."), nl
),
( { my_exist_p_semi(right, X4) } ->
write(X4), nl
;
print("no."), nl
),
{ unsorted_solutions(my_univ_p_multi, List) },
write(List), nl.
my_exist_c = 'c'.
my_exist_f = 42.0.
my_exist_fn = (func(X) = 2 * X).
my_exist_p_multi(1.0).
my_exist_p_multi(2.0).
my_exist_p_semi(left, 33.3).
call_my_exist_c = my_exist_c.
call_my_exist_f = my_exist_f.
call_my_exist_fn = my_exist_fn.
call_my_exist_p_multi(X) :-
my_exist_p_multi(X).
call_my_exist_p_semi(A, B) :-
my_exist_p_semi(A, B).
:- mode my_univ_p_multi(out) is multi.
my_univ_p_multi(univ(X)) :-
call_my_exist_p_multi(X).
:- pred foo(univ::in, io__state::di, state::uo) is det.
foo(X) -->
write(univ_value(X)), nl,
write(call_univ_value(X)), nl.
call_univ_value(Univ) = univ_value(Univ).