/*
* 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 2011-2014 Peter Güttinger
*
*/
package ch.njol.skript.expressions;
import org.bukkit.event.Event;
import org.bukkit.inventory.ItemStack;
import org.eclipse.jdt.annotation.Nullable;
import ch.njol.skript.Skript;
import ch.njol.skript.classes.Converter;
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.entity.EntityType;
import ch.njol.skript.expressions.base.PropertyExpression;
import ch.njol.skript.lang.Expression;
import ch.njol.skript.lang.ExpressionType;
import ch.njol.skript.lang.Literal;
import ch.njol.skript.lang.SkriptParser.ParseResult;
import ch.njol.util.Kleenean;
/**
* @author Peter Güttinger
*/
@Name("X of Item")
@Description("An expression to be able to use a certain amount of items where the amount can be any expression. Please note that is expression is not stable and might be replaced in the future.")
@Examples("give level of player of pickaxes to the player")
@Since("1.2")
public class ExprXOf extends PropertyExpression<Object, Object> {
static {
Skript.registerExpression(ExprXOf.class, Object.class, ExpressionType.PATTERN_MATCHES_EVERYTHING, "%number% of %itemstacks/entitytype%");
}
@SuppressWarnings("null")
Expression<Number> amount;
@SuppressWarnings({"unchecked", "null"})
@Override
public boolean init(final Expression<?>[] exprs, final int matchedPattern, final Kleenean isDelayed, final ParseResult parseResult) {
setExpr(exprs[1]);
amount = (Expression<Number>) exprs[0];
if (amount instanceof Literal && getExpr() instanceof Literal)// "x of y" is also an ItemType syntax
return false;
return true;
}
@Override
public Class<? extends Object> getReturnType() {
return getExpr().getReturnType();
}
@Override
protected Object[] get(final Event e, final Object[] source) {
return get(source, new Converter<Object, Object>() {
@Override
@Nullable
public Object convert(final Object o) {
final Number a = amount.getSingle(e);
if (a == null)
return null;
if (o instanceof ItemStack) {
final ItemStack is = ((ItemStack) o).clone();
is.setAmount(a.intValue());
return is;
} else {
final EntityType t = ((EntityType) o).clone();
t.amount = a.intValue();
return t;
}
}
});
}
@Override
public String toString(final @Nullable Event e, final boolean debug) {
return amount.toString(e, debug) + " of " + getExpr().toString(e, debug);
}
}