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.Deserialization;
025    import org.jetbrains.kotlin.serialization.deserialization.DeserializationContext;
026    import org.jetbrains.kotlin.serialization.deserialization.DeserializationPackage;
027    import org.jetbrains.kotlin.serialization.deserialization.TypeDeserializer;
028    import org.jetbrains.kotlin.types.JetType;
029    
030    import java.util.Collections;
031    import java.util.LinkedHashSet;
032    import java.util.Set;
033    
034    import static org.jetbrains.kotlin.resolve.descriptorUtil.DescriptorUtilPackage.getBuiltIns;
035    
036    public class DeserializedTypeParameterDescriptor extends AbstractLazyTypeParameterDescriptor {
037        private final ProtoBuf.TypeParameter proto;
038        private final TypeDeserializer typeDeserializer;
039    
040        public DeserializedTypeParameterDescriptor(@NotNull DeserializationContext c, @NotNull ProtoBuf.TypeParameter proto, int index) {
041            super(c.getStorageManager(),
042                  c.getContainingDeclaration(),
043                  c.getNameResolver().getName(proto.getName()),
044                  Deserialization.variance(proto.getVariance()),
045                  proto.getReified(),
046                  index,
047                  SourceElement.NO_SOURCE);
048            this.proto = proto;
049            this.typeDeserializer = c.getTypeDeserializer();
050        }
051    
052        @NotNull
053        @Override
054        protected Set<JetType> resolveUpperBounds() {
055            if (proto.getUpperBoundCount() == 0) {
056                return Collections.singleton(getBuiltIns(this).getDefaultBound());
057            }
058            Set<JetType> result = new LinkedHashSet<JetType>(proto.getUpperBoundCount());
059            for (ProtoBuf.Type upperBound : proto.getUpperBoundList()) {
060                result.add(typeDeserializer.type(upperBound, Annotations.EMPTY));
061            }
062            return result;
063        }
064    }