001/*
002 * Copyright 2010-2013 JetBrains s.r.o.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package jet;
018
019import org.jetbrains.jet.rt.annotation.AssertInvisibleInResolver;
020
021@AssertInvisibleInResolver
022public final class DoubleRange implements Range<Double>, Progression<Double> {
023    public static final DoubleRange EMPTY = new DoubleRange(1, 0);
024
025    private final double start;
026    private final double end;
027
028    public DoubleRange(double start, double end) {
029        this.start = start;
030        this.end = end;
031    }
032
033    @Override
034    public boolean contains(Double item) {
035        return start <= item && item <= end;
036    }
037
038    public boolean contains(double item) {
039        return start <= item && item <= end;
040    }
041
042    @Override
043    public Double getStart() {
044        return start;
045    }
046
047    @Override
048    public Double getEnd() {
049        return end;
050    }
051
052    @Override
053    public Double getIncrement() {
054        return 1.0;
055    }
056
057    @Override
058    public DoubleIterator iterator() {
059        return new DoubleProgressionIterator(start, end, 1.0);
060    }
061
062    @Override
063    public String toString() {
064        return start + ".." + end;
065    }
066
067    @Override
068    public boolean equals(Object o) {
069        if (this == o) {
070            return true;
071        }
072        if (o == null || getClass() != o.getClass()) {
073            return false;
074        }
075
076        DoubleRange range = (DoubleRange) o;
077
078        return Double.compare(range.end, end) == 0 && Double.compare(range.start, start) == 0;
079    }
080
081    @Override
082    public int hashCode() {
083        int result;
084        long temp;
085        temp = start != +0.0d ? Double.doubleToLongBits(start) : 0L;
086        result = (int) (temp ^ (temp >>> 32));
087        temp = end != +0.0d ? Double.doubleToLongBits(end) : 0L;
088        result = 31 * result + (int) (temp ^ (temp >>> 32));
089        return result;
090    }
091}