info.bliki.wiki.template.expr.ast.NumberNode Maven / Gradle / Ivy

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package info.bliki.wiki.template.expr.ast;

/**
 * The basic node for a parsed expression string
 *
 */
public abstract class NumberNode extends ASTNode {

    protected boolean sign;

    protected NumberNode(final String value) {
        super(value);
        sign = false;
    }

    public void toggleSign() {
        sign = !sign;
    }

    @Override
    public String getString() {
        if (sign) {
            return "-" + fStringValue;
        }
        return fStringValue;
    }

    @Override
    public String toString() {
        if (sign) {
            return "-" + fStringValue;
        }
        return fStringValue;
    }

    public boolean isSign() {
        return sign;
    }

    public double doubleValue() {
        return Double.parseDouble(toString());
    }

    @Override
    public abstract boolean equals(Object obj);

    @Override
    public int hashCode() {
        if (sign) {
            return fStringValue.hashCode() * 17;
        }
        return fStringValue.hashCode();
    }
}