/*  Part of Assertion Reader for SWI-Prolog

    Author:        Edison Mera
    E-mail:        efmera@gmail.com
    WWW:           https://github.com/edisonm/assertions
    Copyright (C): 2017, Process Design Center, Breda, The Netherlands.
    All rights reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions
    are met:

    1. Redistributions of source code must retain the above copyright
       notice, this list of conditions and the following disclaimer.

    2. Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in
       the documentation and/or other materials provided with the
       distribution.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
    COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
    BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
    CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
    ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.
*/

:- module(rtchecks_example,
          [is_animal/1,
           animal/1,
           animals/1,
           tcollapse/2,
           create_pairwise_mutex_classes/3,
           call_mf/0,
           must_fail/1,
           must_not_fail/0,
           animal_type/1,
           what_kind/2,
           show_if_domestic/1,
           display_any/1,
           get_domestic_list/1,
           display_any2/1,
           test_any/1,
           test2/2,
           test3/2,
           test4/2,
           test5/2,
           test_det/2,
           test_det2/1]).

:- use_module(library(assertions)).
:- use_module(library(plprops)).
:- init_expansors.

/** <module> Examples of assertions that can be processed by rtchecks
*/

:- check pred is_animal(-Animal) :: animal(Animal) + (not_fails, non_det)
        # "This is a way to call is_animal/1".

:- check pred is_animal(+Animal) :: animal(Animal) + (not_fails, is_det).

is_animal(An) :- animal(An).

:- check pred animals(+_) : list(animal).

animals(Animals) :- list(Animals, animal).

:- export(ptt/0).
ptt :- fail.
ptt :- is_animal(a).

:- pred create_pairwise_mutex_classes/3 :: (int * list * list)
        + (not_fails, is_det).

create_pairwise_mutex_classes(0, L, L) :- !.

:- pred tcollapse(A, B) : (int(A), int(B)).
:- pred tcollapse(A, B) :: (int(A), int(B)) => (int(A), int(B)).
:- pred tcollapse(A, B) => (int(A), int(B)).
:- pred tcollapse(A, B) : (int(A), int(B)) + (not_fails, is_det).

tcollapse(_A, _B).

call_mf :-
        must_fail(aaa).

:- check comp must_fail/1 + not_fails.

must_fail(aaa) :-
        display('hello world'(aaa)),
        nl,
        fail.

:- true comp must_not_fail/0 + not_fails.

must_not_fail :-
        display('not fail\n').

:- prop animal/1 is type.

animal(dog).
animal(cat).
animal(tiger).
animal(lion).

:- prop animal_type/1 is type.

animal_type(wild).
animal_type(domestic).

% :- check pred what_kind(A, B) :: (animal(A) => animal_type(B)).
% :- check pred what_kind(+A, -B)
%       :: (animal(A), var(B)) => (animal(A), animal_type(B)).

:- check pred what_kind(A, B) :: (animal(A), animal_type(B)) + not_fails.

what_kind(dog,   domestic).
what_kind(cat,   domestic).
what_kind(tiger, wild).
what_kind(lion,  wild).

:- check pred show_if_domestic(A) : animal(A).

show_if_domestic(A) :-
        what_kind(A, domestic),
        display(A),
        nl.

:- check pred get_domestic_list(A) : var(A) => list(A, animal).

get_domestic_list(A) :-
        findall(Animal, what_kind(Animal, domestic), A).

:- check pred display_any(A) : animal(A) + not_fails.

display_any(A) :-
        display(A),
        nl.

:- check pred display_any2(A) : animal(A) + not_fails.
:- check pred display_any2(A) : animal_type(A) + not_fails.

display_any2(A) :-
        display(A),
        nl,
        fail.

:- check pred test_any(A) :: animal(A).

test_any(A) :-
        display(A),
        nl.

:- pred test2(+A, +B) : (animal(A), animal_type(B)).
:- pred test2(+A, +B) : (animal(B), animal_type(A)).
:- pred test2(+A, +B) :: (animal(A), animal(B)) => (animal(A), animal(B)).
:- pred test2(+A, +B) : (animal(A), animal(B)).
:- pred test2(-, -).
:- pred test2(-, _).

:- pred test2(+A, +B) :: (animal(A), animal(B)) + not_fails.

% repeated tests should be instrumented only once

test2(A, B) :-
        display('A='(A)), nl,
        display('B='(B)), nl.

:- pred test3(_, B) => gnd(B).
:- pred test3(_, B) => gnd(B).

test3(a, b).


% throw rtcheck error on backtracking
:- pred test_det(?, +) + non_det.

test_det(_, a).
test_det(_, b).
test_det(_, c).

% throw rtcheck error
:- pred test_det2(+) + non_det.

test_det2(a).
test_det2(b).
test_det2(c).

:- check calls test4(A, B)
        : ((var(A), var(B)) ; var(A) ; (nonvar(A), nonvar(B))).

test4(A, B) :-
        display('A='(A)), nl,
        display('B='(B)), nl.

:- check calls test5(A, B) : (var(A), var(B)).
:- check calls test5(A, _) : var(A).
:- check calls test5(A, B) : (nonvar(A), nonvar(B)).

test5(A, B) :-
        display('A='(A)), nl,
        display('B='(B)), nl.


:- pred p(+) + no_choicepoints.
:- export(p/1).

p(a).
p(a).
p(b).
p(c).

:- pred q(+) + is_det.
:- export(q/1).

q(a).
q(a).
q(b).
q(c).