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.types;
018    
019    public abstract class TypeProjectionBase implements TypeProjection {
020    
021        @Override
022        public String toString() {
023            if (getProjectionKind() == Variance.INVARIANT) {
024                return getType().toString();
025            }
026            return getProjectionKind() + " " + getType();
027        }
028    
029        @Override
030        public boolean equals(Object o) {
031            if (this == o) return true;
032            if (!(o instanceof TypeProjection)) return false;
033    
034            TypeProjection that = (TypeProjection) o;
035    
036            if (getProjectionKind() != that.getProjectionKind()) return false;
037            if (!getType().equals(that.getType())) return false;
038    
039            return true;
040        }
041    
042        @Override
043        public int hashCode() {
044            int result = getProjectionKind().hashCode();
045            result = 31 * result + (getType().hashCode());
046            return result;
047        }
048    }