Examples of TerminationPattern

jmathexpr.util.pattern.TerminationPattern
A terminal pattern is an expression pattern that represents a terminal expression (e.g. a number, a variable, a constant). @author Elemér Furka

Examples of jmathexpr.util.pattern.TerminationPattern

        return map;
    }
    
    private static Polynomial toPolynomial(Multiplication term, Variable x) {
        NavigableMap<NaturalNumber, Expression> coeffs = new TreeMap();
        TerminationPattern c = Numbers.constant("c");
        TerminationPattern n = Numbers.constant("n");
        ExpressionPattern cxn = new Multiplication(c, new Exponentiation(x, n));


        if (cxn.matches(term)) {
            coeffs.put((NaturalNumber) n.hit(), c.hit());
        } else {
            throw new IllegalArgumentException("Illegal polynomial term: " + term);
        }
        
        return new Polynomial(coeffs, x);

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Examples of jmathexpr.util.pattern.TerminationPattern

    }
    
    private Map<Expression, List<ANumber>> selectConstants(List<Expression> evaluated) {
        Map<Expression, List<ANumber>> selected = new HashMap(); // ai*c -> a1, a2, ... an
        NumberPattern a = new NumberPattern();
        TerminationPattern c = new Constant();
        ExpressionPattern p = new Multiplication(a, c);
        
        for (Expression e : evaluated) {
            if (e.isConstant()) {
                if (e instanceof ANumber) { // 1 -> numbers
                    addToSelectionMap(selected, Naturals.one(), (ANumber) e);
                } else if (p.matches(e)) {
                    addToSelectionMap(selected, c.hit(), a.hit());
                } else {
                    addToSelectionMap(selected, e, Naturals.one());
                }
            }
        }

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Examples of jmathexpr.util.pattern.TerminationPattern

        return selected;
    }
    
    private Map<Expression, List<Expression>> selectLikeTerms(List<Expression> evaluated) {
        Map<Expression, List<Expression>> selected = new HashMap(); // ai*f(x) -> a1, a2, ... an
        TerminationPattern c = new Constant();
        TerminationPattern f = new FunctionPattern(new Variable());
        ExpressionPattern p = new Multiplication(c, f);
        
        for (Expression e : evaluated) {
            if (e.isConstant()) {
                continue;
            } else if (p.matches(e)) {
                addToSelectionMap(selected, f.hit(), c.hit());
            } else {
                addToSelectionMap(selected, e, Naturals.one());
            }
        }

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