Files
mercury/tests/hard_coded/follow_code_bug_2.m
Zoltan Somogyi 2bd7c5ee3e Rename X's aux modules as X_helper_N in hard_coded.
tests/hard_coded/*.m:
    Rename modules as mentioned above.

    In a few cases, where the main module's name itself had a suffix,
    such as "_mod_a" or "_main", remove that suffix. This entails
    renaming the .exp file as well. (In some cases, this meant that
    the name of a helper module was "taken over" by the main module
    of the test case.)

    Update all references to the moved modules.

    General updates to programming style, such as

    - replacing DCG notation with state var notation
    - replacing (C->T;E) with (if C then T else E)
    - moving pred/func declarations to just before their code
    - replacing io.write/io.nl sequences with io.write_line
    - replacing io.print/io.nl sequences with io.print_line
    - fixing too-long lines
    - fixing grammar errors in comments

tests/hard_coded/Mmakefile:
tests/hard_coded/Mercury.options:
    Update all references to the moved modules.

    Enable the constant_prop_int test case. The fact that it wasn't enabled
    before is probably an accident. (When constant_prop_int.m was created,
    the test case was added to a list in the Mmakefile, but that list
    was later removed due to never being referenced.)

tests/hard_coded/constant_prop_int.{m,exp}:
    Delete the calls to shift operations with negative shift amounts,
    since we have added a compile-time error for these since the test
    was originally created.
2023-06-16 08:33:22 +02:00

85 lines
1.8 KiB
Mathematica

%---------------------------------------------------------------------------%
% vim: ts=4 sw=4 et ft=mercury
%---------------------------------------------------------------------------%
:- module follow_code_bug_2.
:- interface.
:- import_module io.
:- pred main(io::di, io::uo) is det.
:- implementation.
:- import_module string.
main(!IO) :-
create_exist_data(int_data, IntData),
output_exist_data(IntData, !IO),
create_exist_data(string_data, StringData),
output_exist_data(StringData, !IO),
create_exist_data(foo_data, FooData),
output_exist_data(FooData, !IO).
:- type data_type
---> int_data
; string_data
; foo_data.
:- type foo
---> foo.
:- some [T] pred create_exist_data(data_type::in, T::out) is det => data(T).
create_exist_data(Type, ExistData) :-
(
Type = int_data,
create_int_data(Data)
;
Type = string_data,
create_string_data(Data)
;
Type = foo_data,
create_foo_data(Data)
),
Data = data(ExistData).
:- pred create_int_data(data::out) is det.
create_int_data(Data) :-
Data = 'new data'(41).
:- pred create_string_data(data::out) is det.
create_string_data(Data) :-
Data = 'new data'("forty-one").
:- pred create_foo_data(data::out) is det.
create_foo_data(Data) :-
Data = 'new data'(foo).
:- pred output_exist_data(T::in, io::di, io::uo) is det <= data(T).
output_exist_data(ExistData, !IO) :-
Str = to_string(ExistData),
io.write_string(Str, !IO),
io.nl(!IO).
:- type data
---> some [T] data(T) => data(T).
:- typeclass data(T) where [
func to_string(T) = string
].
:- instance data(int) where [
(to_string(N) = int_to_string(N))
].
:- instance data(string) where [
(to_string(S) = S)
].
:- instance data(foo) where [
(to_string(_) = "foo")
].