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 org.jetbrains.jet.lang.resolve.constants;
018    
019    import com.google.common.collect.Lists;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.jet.lang.types.JetType;
022    import org.jetbrains.jet.lang.types.lang.KotlinBuiltIns;
023    
024    import java.util.Collection;
025    
026    public class IntegerValueTypeConstructor extends NumberValueTypeConstructor {
027        private final Collection<JetType> supertypes = Lists.newArrayList();
028    
029        public static IntegerValueTypeConstructor create(long value) {
030            return new IntegerValueTypeConstructor(value);
031        }
032    
033        private IntegerValueTypeConstructor(long value) {
034            // order of types matters
035            // 'getPrimitiveNumberType' returns first of supertypes that is a subtype of expected type
036            // for expected type 'Any' result type 'Int' should be returned
037            checkBoundsAndAddSuperType(value, (long) Integer.MIN_VALUE, (long) Integer.MAX_VALUE, KotlinBuiltIns.getInstance().getIntType());
038            checkBoundsAndAddSuperType(value, (long) Byte.MIN_VALUE, (long) Byte.MAX_VALUE, KotlinBuiltIns.getInstance().getByteType());
039            checkBoundsAndAddSuperType(value, (long) Short.MIN_VALUE, (long) Short.MAX_VALUE, KotlinBuiltIns.getInstance().getShortType());
040            supertypes.add(KotlinBuiltIns.getInstance().getLongType());
041        }
042    
043        private void checkBoundsAndAddSuperType(long value, long minValue, long maxValue, JetType kotlinType) {
044            if (value >= minValue && value <= maxValue) {
045                supertypes.add(kotlinType);
046            }
047        }
048    
049        @NotNull
050        @Override
051        public Collection<JetType> getSupertypes() {
052            return supertypes;
053        }
054    
055        @Override
056        public boolean equals(Object o) {
057            if (this == o) return true;
058            if (o == null || getClass() != o.getClass()) return false;
059    
060            IntegerValueTypeConstructor that = (IntegerValueTypeConstructor) o;
061    
062            if (!supertypes.equals(that.supertypes)) return false;
063    
064            return true;
065        }
066    
067        @Override
068        public int hashCode() {
069            return supertypes.hashCode();
070        }
071    }