001    /*
002     * Copyright 2010-2014 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    import org.jetbrains.annotations.NotNull;
020    import org.jetbrains.annotations.Nullable;
021    import org.jetbrains.jet.lang.descriptors.annotations.Annotations;
022    import org.jetbrains.jet.lang.resolve.scopes.JetScope;
023    
024    import java.util.List;
025    
026    public abstract class DelegatingType implements JetType {
027        protected abstract JetType getDelegate();
028    
029        @NotNull
030        @Override
031        public TypeConstructor getConstructor() {
032            return getDelegate().getConstructor();
033        }
034    
035        @NotNull
036        @Override
037        public List<TypeProjection> getArguments() {
038            return getDelegate().getArguments();
039        }
040    
041        @Override
042        public boolean isNullable() {
043            return getDelegate().isNullable();
044        }
045    
046        @NotNull
047        @Override
048        public JetScope getMemberScope() {
049            return getDelegate().getMemberScope();
050        }
051    
052        @Override
053        public boolean isError() {
054            return getDelegate().isError();
055        }
056    
057        @NotNull
058        @Override
059        public Annotations getAnnotations() {
060            return getDelegate().getAnnotations();
061        }
062    
063        @Override
064        @Nullable
065        public <T extends TypeCapability> T getCapability(@NotNull Class<T> capabilityClass) {
066            if (capabilityClass.isInstance(this)) {
067                //noinspection unchecked
068                return (T) this;
069            }
070            return getDelegate().getCapability(capabilityClass);
071        }
072    
073        @Override
074        public int hashCode() {
075            return getDelegate().hashCode();
076        }
077    
078        @Override
079        public boolean equals(Object obj) {
080            return getDelegate().equals(obj);
081        }
082    
083        @Override
084        public String toString() {
085            return getDelegate().toString();
086        }
087    }