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