/*
* 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.hooks.regions.expressions;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.NoSuchElementException;
import org.bukkit.block.Block;
import org.bukkit.event.Event;
import org.eclipse.jdt.annotation.NonNull;
import org.eclipse.jdt.annotation.Nullable;
import ch.njol.skript.Skript;
import ch.njol.skript.doc.Description;
import ch.njol.skript.doc.Examples;
import ch.njol.skript.doc.Name;
import ch.njol.skript.doc.Since;
import ch.njol.skript.hooks.regions.classes.Region;
import ch.njol.skript.lang.Expression;
import ch.njol.skript.lang.ExpressionType;
import ch.njol.skript.lang.SkriptParser.ParseResult;
import ch.njol.skript.lang.util.SimpleExpression;
import ch.njol.util.Kleenean;
import ch.njol.util.coll.iterator.ArrayIterator;
import ch.njol.util.coll.iterator.EmptyIterator;
/**
* @author Peter Güttinger
*/
@Name("Blocks in Region")
@Description({"All blocks in a <a href='../classes/#region'>region</a>.",
"This expression requires a supported regions plugin to be installed."})
@Examples({"loop all blocks in the region {arena.%{faction.%player%}%}:",
" clear the loop-block"})
@Since("2.1")
public class ExprBlocksInRegion extends SimpleExpression<Block> {
static {
Skript.registerExpression(ExprBlocksInRegion.class, Block.class, ExpressionType.COMBINED,
"[(all|the)] blocks (in|of) [[the] region[s]] %regions%");
}
@SuppressWarnings("null")
private Expression<Region> regions;
@SuppressWarnings({"unchecked", "null"})
@Override
public boolean init(final Expression<?>[] exprs, final int matchedPattern, final Kleenean isDelayed, final ParseResult parseResult) {
regions = (Expression<Region>) exprs[0];
return true;
}
@SuppressWarnings("null")
@Override
protected Block[] get(final Event e) {
final Iterator<Block> iter = iterator(e);
final ArrayList<Block> r = new ArrayList<Block>();
while (iter.hasNext())
r.add(iter.next());
return r.toArray(new Block[r.size()]);
}
@Override
@NonNull
public Iterator<Block> iterator(final Event e) {
final Region[] rs = regions.getArray(e);
if (rs.length == 0)
return EmptyIterator.get();
return new Iterator<Block>() {
private Iterator<Block> current = rs[0].getBlocks();
private final Iterator<Region> iter = new ArrayIterator<Region>(rs, 1);
@Override
public boolean hasNext() {
while (!current.hasNext() && iter.hasNext()) {
final Region r = iter.next();
if (r != null)
current = r.getBlocks();
}
return current.hasNext();
}
@SuppressWarnings("null")
@Override
public Block next() {
if (!hasNext())
throw new NoSuchElementException();
return current.next();
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
@Override
public boolean isSingle() {
return false;
}
@Override
public Class<? extends Block> getReturnType() {
return Block.class;
}
@Override
public String toString(final @Nullable Event e, final boolean debug) {
return "all blocks in " + regions.toString(e, debug);
}
}