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.load.kotlin;
018    
019    import kotlin.jvm.functions.Function0;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.annotations.Nullable;
022    import org.jetbrains.kotlin.descriptors.ClassDescriptor;
023    import org.jetbrains.kotlin.descriptors.PackageFragmentDescriptor;
024    import org.jetbrains.kotlin.load.kotlin.header.KotlinClassHeader;
025    import org.jetbrains.kotlin.name.Name;
026    import org.jetbrains.kotlin.resolve.scopes.ChainedScope;
027    import org.jetbrains.kotlin.resolve.scopes.JetScope;
028    import org.jetbrains.kotlin.serialization.ClassData;
029    import org.jetbrains.kotlin.serialization.PackageData;
030    import org.jetbrains.kotlin.serialization.deserialization.ClassDataProvider;
031    import org.jetbrains.kotlin.serialization.deserialization.DeserializationComponents;
032    import org.jetbrains.kotlin.serialization.deserialization.ErrorReporter;
033    import org.jetbrains.kotlin.serialization.deserialization.descriptors.DeserializedPackageMemberScope;
034    import org.jetbrains.kotlin.serialization.jvm.JvmProtoBufUtil;
035    
036    import javax.inject.Inject;
037    import java.util.*;
038    
039    import static kotlin.KotlinPackage.setOf;
040    import static org.jetbrains.kotlin.load.kotlin.header.KotlinClassHeader.Kind.*;
041    
042    public final class DeserializedDescriptorResolver {
043        private final ErrorReporter errorReporter;
044        private DeserializationComponents components;
045    
046        public static final Set<KotlinClassHeader.Kind> KOTLIN_CLASS = setOf(CLASS);
047        public static final Set<KotlinClassHeader.Kind> KOTLIN_FILE_FACADE_OR_MULTIFILE_CLASS_PART = setOf(FILE_FACADE, MULTIFILE_CLASS_PART);
048        public static final Set<KotlinClassHeader.Kind> KOTLIN_PACKAGE_FACADE = setOf(PACKAGE_FACADE);
049    
050        public DeserializedDescriptorResolver(@NotNull ErrorReporter errorReporter) {
051            this.errorReporter = errorReporter;
052        }
053    
054        // component dependency cycle
055        @Inject
056        public void setComponents(@NotNull DeserializationComponentsForJava context) {
057            this.components = context.getComponents();
058        }
059    
060        @Nullable
061        public ClassDescriptor resolveClass(@NotNull KotlinJvmBinaryClass kotlinClass) {
062            String[] data = readData(kotlinClass, KOTLIN_CLASS);
063            if (data != null) {
064                ClassData classData = JvmProtoBufUtil.readClassDataFrom(data);
065                KotlinJvmBinarySourceElement sourceElement = new KotlinJvmBinarySourceElement(kotlinClass);
066                ClassDataProvider classDataProvider = new ClassDataProvider(classData, sourceElement);
067                return components.getClassDeserializer().deserializeClass(kotlinClass.getClassId(), classDataProvider);
068            }
069            return null;
070        }
071    
072        @Nullable
073        public JetScope createKotlinPackagePartScope(@NotNull PackageFragmentDescriptor descriptor, @NotNull KotlinJvmBinaryClass kotlinClass) {
074            String[] data = readData(kotlinClass, KOTLIN_FILE_FACADE_OR_MULTIFILE_CLASS_PART);
075            if (data != null) {
076                //all classes are included in java scope
077                PackageData packageData = JvmProtoBufUtil.readPackageDataFrom(data);
078                return new DeserializedPackageMemberScope(
079                        descriptor, packageData.getPackageProto(), packageData.getNameResolver(), components,
080                        new Function0<Collection<Name>>() {
081                            @Override
082                            public Collection<Name> invoke() {
083                                return Collections.emptyList();
084                            }
085                        }
086                );
087            }
088            return null;
089        }
090    
091        @NotNull
092        public JetScope createKotlinPackageScope(@NotNull PackageFragmentDescriptor descriptor, @NotNull List<KotlinJvmBinaryClass> packageParts) {
093            List<JetScope> list = new ArrayList<JetScope>();
094            for (KotlinJvmBinaryClass callable : packageParts) {
095                JetScope scope = createKotlinPackagePartScope(descriptor, callable);
096                if (scope != null) {
097                    list.add(scope);
098                }
099            }
100            if (list.isEmpty()) {
101                return JetScope.Empty.INSTANCE$;
102            }
103            return new ChainedScope(descriptor, "Member scope for union of package parts data", list.toArray(new JetScope[list.size()]));
104        }
105    
106        @Nullable
107        public String[] readData(@NotNull KotlinJvmBinaryClass kotlinClass, @NotNull Set<KotlinClassHeader.Kind> expectedKinds) {
108            KotlinClassHeader header = kotlinClass.getClassHeader();
109            if (!header.getIsCompatibleAbiVersion()) {
110                errorReporter.reportIncompatibleAbiVersion(kotlinClass.getClassId(), kotlinClass.getLocation(), header.getVersion());
111            }
112            else if (expectedKinds.contains(header.getKind())) {
113                return header.getAnnotationData();
114            }
115    
116            return null;
117        }
118    }