/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.shell.syntax;
/**
* This class represents the micro-syntax for a sequence of other elements
*
* @author crawley@jnode.org
*/
public class MuSequence extends MuSyntax {
private final MuSyntax[] elements;
public MuSequence(MuSyntax ... elements) {
this (null, elements);
}
public MuSequence(String label, MuSyntax ... elements) {
super(label);
for (MuSyntax element : elements) {
@SuppressWarnings("unused")
String dummy = element.label; // Check non-null.
}
this.elements = elements;
}
@Override
public String format(FormatState state) {
StringBuilder sb = new StringBuilder();
for (MuSyntax syntax : elements) {
if (sb.length() > 0) {
sb.append(' ');
}
sb.append(syntax.formatInline(state));
}
return sb.toString();
}
public MuSyntax[] getElements() {
return elements;
}
@Override
public MuSyntaxKind getKind() {
return MuSyntaxKind.SEQUENCE;
}
@Override
MuSyntax resolveBackReferences(ResolveState state) throws SyntaxFailureException {
if (state.seen.add(this)) {
if (label != null) {
state.refMap.put(label, this);
}
for (int i = 0; i < elements.length; i++) {
elements[i] = elements[i].resolveBackReferences(state);
}
}
return this;
}
}