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    import org.jetbrains.annotations.NotNull;
020    import org.jetbrains.jet.lang.descriptors.annotations.AnnotationDescriptor;
021    import org.jetbrains.jet.lang.resolve.name.Name;
022    import org.jetbrains.jet.lang.resolve.scopes.JetScope;
023    
024    import java.util.List;
025    
026    /**
027     * This is a fake type assigned to namespace expressions. Only member lookup is
028     * supposed to be done on these types.
029     */
030    public class NamespaceType implements JetType {
031        private final Name name;
032        @NotNull
033        private final JetScope memberScope;
034    
035        public NamespaceType(@NotNull Name name, @NotNull JetScope memberScope) {
036            this.name = name;
037            this.memberScope = memberScope;
038        }
039    
040        @NotNull
041        @Override
042        public JetScope getMemberScope() {
043            return memberScope;
044        }
045    
046        @NotNull
047        @Override
048        public TypeConstructor getConstructor() {
049            return throwException();
050        }
051    
052        private TypeConstructor throwException() {
053            throw new UnsupportedOperationException("Only member lookup is allowed on a namespace type " + name);
054        }
055    
056        @NotNull
057        @Override
058        public List<TypeProjection> getArguments() {
059            throwException();
060            return null;
061        }
062    
063        @Override
064        public boolean isNullable() {
065            throwException();
066            return false;
067        }
068    
069        @Override
070        public List<AnnotationDescriptor> getAnnotations() {
071            throwException();
072            return null;
073        }
074    }