001    /*
002     * Copyright 2010-2015 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.kotlin.serialization.deserialization.descriptors;
018    
019    import org.jetbrains.annotations.NotNull;
020    import org.jetbrains.kotlin.descriptors.SourceElement;
021    import org.jetbrains.kotlin.descriptors.annotations.Annotations;
022    import org.jetbrains.kotlin.descriptors.impl.AbstractLazyTypeParameterDescriptor;
023    import org.jetbrains.kotlin.serialization.ProtoBuf;
024    import org.jetbrains.kotlin.serialization.deserialization.DeserializationContext;
025    import org.jetbrains.kotlin.serialization.deserialization.DeserializationPackage;
026    import org.jetbrains.kotlin.serialization.deserialization.TypeDeserializer;
027    import org.jetbrains.kotlin.types.JetType;
028    
029    import java.util.Collections;
030    import java.util.LinkedHashSet;
031    import java.util.Set;
032    
033    import static org.jetbrains.kotlin.resolve.descriptorUtil.DescriptorUtilPackage.getBuiltIns;
034    
035    public class DeserializedTypeParameterDescriptor extends AbstractLazyTypeParameterDescriptor {
036        private final ProtoBuf.TypeParameter proto;
037        private final TypeDeserializer typeDeserializer;
038    
039        public DeserializedTypeParameterDescriptor(@NotNull DeserializationContext c, @NotNull ProtoBuf.TypeParameter proto, int index) {
040            super(c.getStorageManager(),
041                  c.getContainingDeclaration(),
042                  c.getNameResolver().getName(proto.getName()),
043                  DeserializationPackage.variance(proto.getVariance()),
044                  proto.getReified(),
045                  index,
046                  SourceElement.NO_SOURCE);
047            this.proto = proto;
048            this.typeDeserializer = c.getTypeDeserializer();
049        }
050    
051        @NotNull
052        @Override
053        protected Set<JetType> resolveUpperBounds() {
054            if (proto.getUpperBoundCount() == 0) {
055                return Collections.singleton(getBuiltIns(this).getDefaultBound());
056            }
057            Set<JetType> result = new LinkedHashSet<JetType>(proto.getUpperBoundCount());
058            for (ProtoBuf.Type upperBound : proto.getUpperBoundList()) {
059                result.add(typeDeserializer.type(upperBound, Annotations.EMPTY));
060            }
061            return result;
062        }
063    }