/*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package org.joni.ast;
import org.joni.exception.ErrorMessages;
import org.joni.exception.InternalException;
public final class ListNode extends Node {
public Node value;
public ListNode tail;
private ListNode(Node value, ListNode tail, int type) {
super(type);
this.value = value;
if (value != null) value.parent = this;
this.tail = tail;
if (tail != null) tail.parent = this;
}
public static ListNode newAlt(Node value, ListNode tail) {
return new ListNode(value, tail, ALT);
}
public static ListNode newList(Node value, ListNode tail) {
return new ListNode(value, tail, LIST);
}
public static ListNode listAdd(ListNode list, Node value) {
ListNode n = newList(value, null);
if (list != null) {
while (list.tail != null) list = list.tail;
list.setTail(n);
}
return n;
}
public void toListNode() {
type = LIST;
}
@Override
protected void setChild(Node child) {
value = child;
}
@Override
protected Node getChild() {
return value;
}
public void setValue(Node value) {
this.value = value;
value.parent = this;
}
public void setTail(ListNode tail) {
this.tail = tail;
}
@Override
public String getName() {
switch (type) {
case ALT:
return "Alt";
case LIST:
return "List";
default:
throw new InternalException(ErrorMessages.PARSER_BUG);
}
}
@Override
public String toString(int level) {
StringBuilder sb = new StringBuilder();
sb.append("\n value: " + pad(value, level + 1));
sb.append("\n tail: " + (tail == null ? "NULL" : tail.toString()));
return sb.toString();
}
}