/*
* WorldEdit, a Minecraft world manipulation toolkit
* Copyright (C) sk89q <http://www.sk89q.com>
* Copyright (C) WorldEdit team and contributors
*
* This program 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 3 of the License, or
* (at your option) any later version.
*
* This program 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 program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.sk89q.worldedit.extension.factory;
import com.sk89q.worldedit.WorldEdit;
import com.sk89q.worldedit.blocks.BaseBlock;
import com.sk89q.worldedit.extension.input.ParserContext;
import com.sk89q.worldedit.extension.input.InputParseException;
import com.sk89q.worldedit.function.pattern.BlockPattern;
import com.sk89q.worldedit.function.pattern.Pattern;
import com.sk89q.worldedit.function.pattern.RandomPattern;
import com.sk89q.worldedit.internal.registry.InputParser;
class RandomPatternParser extends InputParser<Pattern> {
RandomPatternParser(WorldEdit worldEdit) {
super(worldEdit);
}
@Override
public Pattern parseFromInput(String input, ParserContext context) throws InputParseException {
BlockFactory blockRegistry = worldEdit.getBlockFactory();
RandomPattern randomPattern = new RandomPattern();
for (String token : input.split(",")) {
BaseBlock block;
double chance;
// Parse special percentage syntax
if (token.matches("[0-9]+(\\.[0-9]*)?%.*")) {
String[] p = token.split("%");
if (p.length < 2) {
throw new InputParseException("Missing the type after the % symbol for '" + input + "'");
} else {
chance = Double.parseDouble(p[0]);
block = blockRegistry.parseFromInput(p[1], context);
}
} else {
chance = 1;
block = blockRegistry.parseFromInput(token, context);
}
randomPattern.add(new BlockPattern(block), chance);
}
return randomPattern;
}
}