001/*
002 * Licensed to the author under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package de.cuioss.test.generator.internal.net.java.quickcheck.generator.support;
018
019import static de.cuioss.tools.base.Preconditions.checkState;
020
021import de.cuioss.test.generator.internal.net.java.quickcheck.Generator;
022import de.cuioss.test.generator.internal.net.java.quickcheck.collection.Pair;
023
024public class CharacterGenerator implements Generator<Character> {
025
026    public static final Pair<Character, Character> BASIC_LATIN = new Pair<>((char) 0x20, (char) 0x7F);
027
028    public static final Pair<Character, Character> LATIN_1_SUPPLEMENT = new Pair<>((char) 0xa0, (char) 0xFF);
029
030    private final IntegerGenerator generator;
031
032    public CharacterGenerator() {
033        this(BASIC_LATIN.getFirst(), BASIC_LATIN.getSecond());
034    }
035
036    public CharacterGenerator(char first, char last) {
037        checkState(last >= first, "first <= last");
038        this.generator = new IntegerGenerator(first, last);
039    }
040
041    @Override
042    public Character next() {
043        return nextChar();
044    }
045
046    public char nextChar() {
047        return (char) this.generator.nextInt();
048    }
049}