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fdd141bf77
tests/invalid/*.{m,err_exp}:
tests/misc_tests/*.m:
tests/mmc_make/*.m:
tests/par_conj/*.m:
tests/purity/*.m:
tests/stm/*.m:
tests/string_format/*.m:
tests/structure_reuse/*.m:
tests/submodules/*.m:
tests/tabling/*.m:
tests/term/*.m:
tests/trailing/*.m:
tests/typeclasses/*.m:
tests/valid/*.m:
tests/warnings/*.{m,exp}:
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 tests
that check compiler error messages, expect the new line numbers.
browser/cterm.m:
browser/tree234_cc.m:
Import only one module per line.
tests/hard_coded/boyer.m:
Fix something I missed.
68 lines
1.3 KiB
Mathematica
68 lines
1.3 KiB
Mathematica
%---------------------------------------------------------------------------%
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% vim: ts=4 sw=4 et ft=mercury
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%---------------------------------------------------------------------------%
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:- module bug271.
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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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:- import_module int.
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:- import_module list.
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:- import_module string.
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:- type a_or_b
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---> a
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; b.
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main(!IO) :-
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get_a_or_b(AB),
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(
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AB = a,
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obj_to_num(obj, X),
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S = to_string(X)
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;
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AB = b,
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obj_to_num(obj, X),
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S = to_string(X)
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),
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format("%s\n", [s(S)], !IO).
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:- pred get_a_or_b(a_or_b::out) is det.
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:- typeclass literal(X) where [
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func literal_type(X) = literal_type
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].
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:- typeclass num(X) where [
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func to_string(X) = string
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].
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:- some [Y] (pred obj_to_num(object(X)::in, Y::out) is det
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=> num(Y)) <= literal(X).
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% We need a clause so that Y gets a type assignment.
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obj_to_num(_, 15).
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:- type object(L)
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---> object(L).
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:- type literal
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---> literal.
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:- type literal_type
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---> literal_type.
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:- func obj = object(literal).
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:- instance literal(literal) where [
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(literal_type(literal) = literal_type)
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].
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:- instance num(int) where [
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(to_string(X) = string(X))
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].
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