95 lines
1.9 KiB
Java
95 lines
1.9 KiB
Java
package no.birkett.kiwi;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* Created by alex on 30/01/15.
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*/
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public class Expression implements ExpressionConvertible {
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private List<Term> terms;
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private double constant;
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public Expression() {
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this(0);
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}
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public Expression(double constant) {
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this.constant = constant;
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this.terms = new ArrayList<Term>();
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}
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public Expression(Term term, double constant) {
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this.terms = new ArrayList<Term>();
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terms.add(term);
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this.constant = constant;
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}
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public Expression(Term term) {
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this (term, 0.0);
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}
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public Expression(List<Term> terms, double constant) {
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this.terms = terms;
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this.constant = constant;
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}
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public Expression(List<Term> terms) {
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this(terms, 0);
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}
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public double getConstant() {
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return constant;
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}
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public void setConstant(double constant) {
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this.constant = constant;
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}
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public List<Term> getTerms() {
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return terms;
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}
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public void setTerms(List<Term> terms) {
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this.terms = terms;
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}
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public double getValue() {
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double result = this.constant;
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for (Term term : terms) {
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result += term.getValue();
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}
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return result;
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}
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public final boolean isConstant() {
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return terms.size() == 0;
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}
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@Override
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public Expression toExpression() {
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return this;
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}
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@Override
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public String toString() {
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StringBuilder sb = new StringBuilder();
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sb.append("isConstant: " + isConstant() + " constant: " + constant);
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if (!isConstant()) {
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sb.append(" terms: [");
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for (Term term: terms) {
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sb.append("(");
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sb.append(term);
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sb.append(")");
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}
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sb.append("] ");
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}
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return sb.toString();
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}
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}
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