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.java.descriptor;
018    
019    import org.jetbrains.annotations.NotNull;
020    import org.jetbrains.annotations.Nullable;
021    import org.jetbrains.jet.lang.descriptors.ClassKind;
022    import org.jetbrains.jet.lang.descriptors.ConstructorDescriptor;
023    import org.jetbrains.jet.lang.descriptors.DeclarationDescriptor;
024    import org.jetbrains.jet.lang.descriptors.impl.ConstructorDescriptorImpl;
025    import org.jetbrains.jet.lang.descriptors.impl.MutableClassDescriptorLite;
026    import org.jetbrains.jet.lang.resolve.DescriptorFactory;
027    
028    import java.util.Collection;
029    import java.util.Collections;
030    
031    import static org.jetbrains.jet.lang.resolve.name.SpecialNames.getClassObjectName;
032    
033    public class JavaEnumClassObjectDescriptor extends MutableClassDescriptorLite {
034        private ConstructorDescriptor constructor;
035    
036        public JavaEnumClassObjectDescriptor(@NotNull DeclarationDescriptor enumClass) {
037            super(enumClass, getClassObjectName(enumClass.getName()), ClassKind.CLASS_OBJECT, false);
038        }
039    
040        private void initConstructor() {
041            if (constructor == null) {
042                ConstructorDescriptorImpl constructor = DescriptorFactory.createPrimaryConstructorForObject(this);
043                constructor.setReturnType(getDefaultType());
044                this.constructor = constructor;
045            }
046        }
047    
048        @NotNull
049        @Override
050        public Collection<ConstructorDescriptor> getConstructors() {
051            initConstructor();
052            return Collections.singleton(constructor);
053        }
054    
055        @Nullable
056        @Override
057        public ConstructorDescriptor getUnsubstitutedPrimaryConstructor() {
058            initConstructor();
059            return constructor;
060        }
061    }