/*
* This file is part of Skript.
*
* Skript is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Skript 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Skript. If not, see <http://www.gnu.org/licenses/>.
*
*
* Copyright 2011, 2012 Peter Güttinger
*
*/
package ch.njol.skript.util;
import java.util.HashMap;
import org.eclipse.jdt.annotation.Nullable;
import ch.njol.skript.localization.Language;
import ch.njol.skript.localization.LanguageChangeListener;
import ch.njol.util.StringUtils;
/**
* @author Peter Güttinger
*/
public final class EnumUtils<E extends Enum<E>> {
private final Class<E> c;
private final String languageNode;
private String[] names;
private final HashMap<String, E> parseMap = new HashMap<String, E>();
public EnumUtils(final Class<E> c, final String languageNode) {
assert c != null && c.isEnum() : c;
assert languageNode != null && !languageNode.isEmpty() && !languageNode.endsWith(".") : languageNode;
this.c = c;
this.languageNode = languageNode;
names = new String[c.getEnumConstants().length];
Language.addListener(new LanguageChangeListener() {
@Override
public void onLanguageChange() {
validate(true);
}
});
}
/**
* Updates the names if the language has changed or the enum was modified (using reflection).
*/
final void validate(final boolean force) {
boolean update = force;
final int newL = c.getEnumConstants().length;
if (newL > names.length) {
names = new String[newL];
update = true;
}
if (update) {
parseMap.clear();
for (final E e : c.getEnumConstants()) {
final String[] ls = Language.getList(languageNode + "." + e.name());
names[e.ordinal()] = ls[0];
for (final String l : ls)
parseMap.put(l.toLowerCase(), e);
}
}
}
@Nullable
public final E parse(final String s) {
validate(false);
return parseMap.get(s.toLowerCase());
}
@SuppressWarnings("null")
public final String toString(final E e, final int flags) {
validate(false);
return names[e.ordinal()];
}
public final String getAllNames() {
validate(false);
return StringUtils.join(names, ", ");
}
}