/**
* Prolog code for the structure lexical theory test cases.
*
* Source of test cases are the following standards:
* - Prolog General Core ISO/IEC 13211-1
* - Draft Technical Corrigendum 2, WG17, Ulrich Neumerkel
* <a href="https://www.complang.tuwien.ac.at/ulrich/iso-prolog/dtc2">www.complang.tuwien.ac.at/ulrich/iso-prolog/dtc2</a>
*
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*
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* Technologies AG. If the company was not the originator of some
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*
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*/
:- multifile runner_case/5.
:- discontiguous(runner_case/5).
:- multifile(runner_pred/5).
:- discontiguous(runner_pred/5).
:- multifile(runner_file/3).
runner_file(structure, compare, 'ISO 8.4.1 lexical').
/****************************************************************/
/* Lexical Comparison */
/****************************************************************/
/* X == Y */
runner_pred(==, 2, structure, compare, 'ISO 8.4.1.4').
runner_case(==, 2, structure, compare, 'ISO 8.4.1.4, ISO 13') :-
X == X.
runner_case(==, 2, structure, compare, 'ISO 8.4.1.4, ISO 15') :-
\+ _ == _.
runner_case(==, 2, structure, compare, 'ISO 8.2.1.4, XLOG 1') :-
\+ 1 == 2.
runner_case(==, 2, structure, compare, 'ISO 8.2.1.4, XLOG 2') :-
\+ g(X) == f(f(X)).
runner_case(==, 2, structure, compare, 'ISO 8.4.1.4, XLOG 3') :-
X = f(g(X,A),B), Y = g(f(Y,B),A), Z = f(Y,B),
X == Z.
runner_case(==, 2, structure, compare, 'ISO 8.4.1.4, XLOG 4') :-
X = f(f(f(X,A),A),A), Y = f(f(Y,A),A),
X == Y.
/* X \== Y */
runner_pred(\==, 2, structure, compare, 'ISO 8.4.1.4').
runner_case(\==, 2, structure, compare, 'ISO 8.4.1.4, ISO 3') :-
\+ 1 \== 1.
runner_case(\==, 2, structure, compare, 'ISO 8.4.1.4, ISO 16') :-
_ \== _.
runner_case(\==, 2, structure, compare, 'ISO 8.4.1.4, XLOG 1') :-
X = g(X), Y = f(Y), Z = g(Y),
X \== Z.