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    
017    package jet;
018    
019    import org.jetbrains.jet.rt.annotation.AssertInvisibleInResolver;
020    
021    @AssertInvisibleInResolver
022    public final class FloatRange implements Range<Float>, Progression<Float> {
023        public static final FloatRange EMPTY = new FloatRange(1, 0);
024    
025        private final float start;
026        private final float end;
027    
028        public FloatRange(float start, float end) {
029            this.start = start;
030            this.end = end;
031        }
032    
033        @Override
034        public boolean contains(Float item) {
035            return start <= item && item <= end;
036        }
037    
038        public boolean contains(float item) {
039            return start <= item && item <= end;
040        }
041    
042        @Override
043        public Float getStart() {
044            return start;
045        }
046    
047        @Override
048        public Float getEnd() {
049            return end;
050        }
051    
052        @Override
053        public Float getIncrement() {
054            return 1.0f;
055        }
056    
057        @Override
058        public FloatIterator iterator() {
059            return new FloatProgressionIterator(start, end, 1);
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            FloatRange range = (FloatRange) o;
077    
078            return Float.compare(range.end, end) == 0 && Float.compare(range.start, start) == 0;
079        }
080    
081        @Override
082        public int hashCode() {
083            int result = (start != +0.0f ? Float.floatToIntBits(start) : 0);
084            result = 31 * result + (end != +0.0f ? Float.floatToIntBits(end) : 0);
085            return result;
086        }
087    }