org.duelengine.duel.ast.ContainerNode Maven / Gradle / Ivy

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package org.duelengine.duel.ast;

import java.util.ArrayList;
import java.util.List;

public class ContainerNode extends DuelNode {
	private final List children = new ArrayList();

	public ContainerNode(int index, int line, int column) {
		super(index, line, column);
	}

	protected ContainerNode(DuelNode... children) {
		if (children != null) {
			for (DuelNode child : children) {
				appendChild(child);
			}
		}
	}

	public boolean hasChildren() {
		return !children.isEmpty();
	}

	public int childCount() {
		return children.size();
	}

	public List getChildren() {
		return children;
	}

	public DuelNode getFirstChild() {
		return children.isEmpty() ? null : children.get(0);
	}

	public DuelNode getLastChild() {
		return children.isEmpty() ? null : children.get(children.size()-1);
	}

	public void appendChild(DuelNode child) {
		children.add(child);
		child.setParent(this);
	}

	public boolean removeChild(DuelNode oldChild) {
		if (oldChild == null) {
			return false;
		}

		for (int i=0, length=children.size(); i