Examples of kodkod.ast.Expression.lone()

kodkod.ast.Expression.lone()
Returns the formula 'lone this'. The effect of this method is the same as calling this.apply(LONE). @return this.apply(LONE)


    /** Helper method that returns the constraint that the sig has exactly "n" elements, or at most "n" elements */
    private Formula size(Sig sig, int n, boolean exact) {
        Expression a = sol.a2k(sig);
        if (n<=0) return a.no();
        if (n==1) return exact ? a.one() : a.lone();
        Formula f = exact ? Formula.TRUE : null;
        Decls d = null;
        Expression sum = null;
        while(n>0) {
           n--;

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                rep.bound("Sig "+s+" in "+upper+" with size==1\n");
                sol.addFormula(exp.one(), s.isOne);
                continue;
            }
            if (s.isSome!=null && lower.size()<1) sol.addFormula(exp.some(), s.isSome);
            if (s.isLone!=null && upper.size()>1) sol.addFormula(exp.lone(), s.isLone);
            if (n<0) continue; // This means no scope was specified
            if (lower.size()==n && upper.size()==n && sc.isExact(s)) {
                rep.bound("Sig "+s+" == "+upper+"\n");
            }
            else if (sc.isExact(s)) {

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