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 org.jetbrains.annotations.NotNull;
020    import org.jetbrains.annotations.Nullable;
021    import org.jetbrains.jet.descriptors.serialization.ClassData;
022    import org.jetbrains.jet.descriptors.serialization.JavaProtoBufUtil;
023    import org.jetbrains.jet.descriptors.serialization.descriptors.DeserializedClassDescriptor;
024    import org.jetbrains.jet.descriptors.serialization.descriptors.DeserializedPackageMemberScope;
025    import org.jetbrains.jet.lang.descriptors.ClassDescriptor;
026    import org.jetbrains.jet.lang.descriptors.PackageFragmentDescriptor;
027    import org.jetbrains.jet.lang.resolve.java.resolver.ErrorReporter;
028    import org.jetbrains.jet.lang.resolve.kotlin.header.KotlinClassHeader;
029    import org.jetbrains.jet.lang.resolve.scopes.JetScope;
030    
031    import javax.inject.Inject;
032    
033    import static org.jetbrains.jet.lang.resolve.kotlin.header.KotlinClassHeader.Kind.CLASS;
034    import static org.jetbrains.jet.lang.resolve.kotlin.header.KotlinClassHeader.Kind.PACKAGE_FACADE;
035    
036    public final class DeserializedDescriptorResolver {
037        private DeserializationGlobalContextForJava context;
038    
039        private ErrorReporter errorReporter;
040    
041        @Inject
042        public void setContext(DeserializationGlobalContextForJava context) {
043            this.context = context;
044        }
045    
046        @Inject
047        public void setErrorReporter(ErrorReporter errorReporter) {
048            this.errorReporter = errorReporter;
049        }
050    
051        @Nullable
052        public ClassDescriptor resolveClass(@NotNull KotlinJvmBinaryClass kotlinClass) {
053            String[] data = readData(kotlinClass, CLASS);
054            if (data != null) {
055                ClassData classData = JavaProtoBufUtil.readClassDataFrom(data);
056                return new DeserializedClassDescriptor(context, classData);
057            }
058            return null;
059        }
060    
061        @Nullable
062        public JetScope createKotlinPackageScope(@NotNull PackageFragmentDescriptor descriptor, @NotNull KotlinJvmBinaryClass kotlinClass) {
063            String[] data = readData(kotlinClass, PACKAGE_FACADE);
064            if (data != null) {
065                return new DeserializedPackageMemberScope(descriptor, JavaProtoBufUtil.readPackageDataFrom(data), context);
066            }
067            return null;
068        }
069    
070        @Nullable
071        private String[] readData(@NotNull KotlinJvmBinaryClass kotlinClass, @NotNull KotlinClassHeader.Kind expectedKind) {
072            KotlinClassHeader header = kotlinClass.getClassHeader();
073            if (header.getKind() == KotlinClassHeader.Kind.INCOMPATIBLE_ABI_VERSION) {
074                errorReporter.reportIncompatibleAbiVersion(kotlinClass, header.getVersion());
075            }
076            else if (header.getKind() == expectedKind) {
077                return header.getAnnotationData();
078            }
079    
080            return null;
081        }
082    }