Starlog/demo_problem_statement_fix.pl at main · luciangreen/Starlog · GitHub

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% Final demonstration of the problem statement fix
% Problem: "Please make [A&[x]&[y]&[z]] is [[p]&[x]&[y]&[z]]. A = [p] ; not hang afterwards."

:- use_module('starlog').

demonstrate_problem_statement :-
    write('===================================='), nl,
    write('Problem Statement Demonstration'), nl,
    write('===================================='), nl, nl,

    write('Problem: "Please make [A&[x]&[y]&[z]] is [[p]&[x]&[y]&[z]]. A = [p] ; not hang afterwards."'), nl, nl,

    write('Solution 1: Using the dual expression'), nl,
    write('  Query: starlog_call(([A&[x]&[y]&[z]] is [[p]&[x]&[y]&[z]]))'), nl,
    starlog_call(([A1&[x]&[y]&[z]] is [[p]&[x]&[y]&[z]])),
    write('  Result: A = '), write(A1), nl,
    write('  ✓ Correctly solves for A = [p]'), nl, nl,

    write('Solution 2: Using the OR (;) operator'), nl,
    write('  Query: starlog_call((([A&[x]&[y]&[z]] is [[p]&[x]&[y]&[z]]) ; (A = [p])))'), nl,
    starlog_call((([A2&[x]&[y]&[z]] is [[p]&[x]&[y]&[z]]) ; (A2 = [p]))),
    write('  Result: A = '), write(A2), nl,
    write('  ✓ Correctly solves for A = [p]'), nl, nl,

    write('Verification: No hang afterwards'), nl,
    write('  Testing with findall to verify no infinite backtracking...'), nl,
    findall(A, starlog_call(([A&[x]&[y]&[z]] is [[p]&[x]&[y]&[z]])), Solutions),
    write('  All solutions found: '), write(Solutions), nl,
    length(Solutions, Count),
    write('  Number of solutions: '), write(Count), nl,
    (Count =:= 1 ->
        write('  ✓ Single solution confirmed - no infinite backtracking!')
    ;
        write('  ✗ ERROR: Multiple solutions found')
    ), nl, nl,

    write('Continuing execution after the dual expression...'), nl,
    write('  Doing more work...'), nl,
    starlog_call(X is "hello":"world"),
    write('  X = '), write(X), nl,
    write('  ✓ System continues to work correctly after dual expression'), nl, nl,

    write('===================================='), nl,
    write('Problem Statement Successfully Solved!'), nl,
    write('===================================='), nl.

:- demonstrate_problem_statement.
:- halt.