60 lines
1.6 KiB
Java
60 lines
1.6 KiB
Java
/**
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* Serene (simple) - A PoC lisp to collect data on Serenes concepts
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* Copyright (C) 2019-2020 Sameer Rahmani <lxsameer@gnu.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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package serene.simple;
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/**
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* A poor implementation of a Node number.
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*
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* Why poor?
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* first of all it allocates two types of number to hold one.
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*/
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public class NumberNode extends Node {
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private boolean isDouble = false;
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private Double doubleValue;
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private Long longValue;
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public NumberNode(String v) {
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if (v.contains(".")) {
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this.doubleValue = Double.parseDouble(v);
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this.isDouble = true;
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}
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else {
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this.longValue = Long.parseLong(v, 10);
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}
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}
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@Override
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public Object eval(IScope scope) {
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return this.value();
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}
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@Override
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public String toString() {
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return String.format("%s", this.value());
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}
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private Object value() {
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if (isDouble) {
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return doubleValue;
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}
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return this.longValue;
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}
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}
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