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.kotlin;
018    
019    import kotlin.Function0;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.annotations.Nullable;
022    import org.jetbrains.jet.descriptors.serialization.ClassData;
023    import org.jetbrains.jet.descriptors.serialization.ClassId;
024    import org.jetbrains.jet.descriptors.serialization.JavaProtoBufUtil;
025    import org.jetbrains.jet.descriptors.serialization.NameResolver;
026    import org.jetbrains.jet.descriptors.serialization.descriptors.DeserializedPackageMemberScope;
027    import org.jetbrains.jet.lang.descriptors.ClassDescriptor;
028    import org.jetbrains.jet.lang.descriptors.PackageFragmentDescriptor;
029    import org.jetbrains.jet.lang.resolve.java.resolver.ErrorReporter;
030    import org.jetbrains.jet.lang.resolve.kotlin.header.KotlinClassHeader;
031    import org.jetbrains.jet.lang.resolve.name.Name;
032    import org.jetbrains.jet.lang.resolve.scopes.JetScope;
033    
034    import javax.inject.Inject;
035    
036    import java.util.Collection;
037    import java.util.Collections;
038    
039    import static org.jetbrains.jet.lang.resolve.kotlin.header.KotlinClassHeader.Kind.CLASS;
040    import static org.jetbrains.jet.lang.resolve.kotlin.header.KotlinClassHeader.Kind.PACKAGE_FACADE;
041    
042    public final class DeserializedDescriptorResolver {
043        private DeserializationGlobalContextForJava context;
044    
045        private ErrorReporter errorReporter;
046    
047        @Inject
048        public void setContext(DeserializationGlobalContextForJava context) {
049            this.context = context;
050        }
051    
052        @Inject
053        public void setErrorReporter(ErrorReporter errorReporter) {
054            this.errorReporter = errorReporter;
055        }
056    
057        @Nullable
058        public ClassDescriptor resolveClass(@NotNull KotlinJvmBinaryClass kotlinClass) {
059            String[] data = readData(kotlinClass, CLASS);
060            if (data != null) {
061                return context.getClassDeserializer().deserializeClass(JavaProtoBufUtil.readClassDataFrom(data));
062            }
063            return null;
064        }
065    
066        @Nullable
067        public JetScope createKotlinPackageScope(@NotNull PackageFragmentDescriptor descriptor, @NotNull KotlinJvmBinaryClass kotlinClass) {
068            String[] data = readData(kotlinClass, PACKAGE_FACADE);
069            if (data != null) {
070                //all classes are included in java scope
071                return new DeserializedPackageMemberScope(descriptor, JavaProtoBufUtil.readPackageDataFrom(data), context,
072                                                          new Function0<Collection<Name>>() {
073                    @Override
074                    public Collection<Name> invoke() {
075                        return Collections.emptyList();
076                    }
077                });
078            }
079            return null;
080        }
081    
082        @Nullable
083        public String[] readData(@NotNull KotlinJvmBinaryClass kotlinClass, @NotNull KotlinClassHeader.Kind expectedKind) {
084            KotlinClassHeader header = kotlinClass.getClassHeader();
085            if (header.getKind() == KotlinClassHeader.Kind.INCOMPATIBLE_ABI_VERSION) {
086                errorReporter.reportIncompatibleAbiVersion(kotlinClass, header.getVersion());
087            }
088            else if (header.getKind() == expectedKind) {
089                return header.getAnnotationData();
090            }
091    
092            return null;
093        }
094    }