| // Copyright (c) 2016, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| package com.android.tools.r8.graph; |
| |
| import static com.android.tools.r8.utils.InternalOptions.ASM_VERSION; |
| import static org.objectweb.asm.ClassReader.SKIP_CODE; |
| import static org.objectweb.asm.ClassReader.SKIP_DEBUG; |
| import static org.objectweb.asm.ClassReader.SKIP_FRAMES; |
| import static org.objectweb.asm.Opcodes.ACC_DEPRECATED; |
| |
| import com.android.tools.r8.ProgramResource; |
| import com.android.tools.r8.ProgramResource.Kind; |
| import com.android.tools.r8.ResourceException; |
| import com.android.tools.r8.cf.CfVersion; |
| import com.android.tools.r8.dex.Constants; |
| import com.android.tools.r8.errors.CompilationError; |
| import com.android.tools.r8.errors.Unreachable; |
| import com.android.tools.r8.graph.DexProgramClass.ChecksumSupplier; |
| import com.android.tools.r8.graph.DexValue.DexValueAnnotation; |
| import com.android.tools.r8.graph.DexValue.DexValueArray; |
| import com.android.tools.r8.graph.DexValue.DexValueBoolean; |
| import com.android.tools.r8.graph.DexValue.DexValueByte; |
| import com.android.tools.r8.graph.DexValue.DexValueChar; |
| import com.android.tools.r8.graph.DexValue.DexValueDouble; |
| import com.android.tools.r8.graph.DexValue.DexValueEnum; |
| import com.android.tools.r8.graph.DexValue.DexValueFloat; |
| import com.android.tools.r8.graph.DexValue.DexValueInt; |
| import com.android.tools.r8.graph.DexValue.DexValueLong; |
| import com.android.tools.r8.graph.DexValue.DexValueNull; |
| import com.android.tools.r8.graph.DexValue.DexValueShort; |
| import com.android.tools.r8.graph.DexValue.DexValueString; |
| import com.android.tools.r8.graph.DexValue.DexValueType; |
| import com.android.tools.r8.graph.GenericSignature.ClassSignature; |
| import com.android.tools.r8.graph.GenericSignature.FieldTypeSignature; |
| import com.android.tools.r8.graph.GenericSignature.MethodTypeSignature; |
| import com.android.tools.r8.jar.CfApplicationWriter; |
| import com.android.tools.r8.origin.Origin; |
| import com.android.tools.r8.shaking.ProguardKeepAttributes; |
| import com.android.tools.r8.synthesis.SyntheticMarker; |
| import com.android.tools.r8.utils.AndroidApiLevel; |
| import com.android.tools.r8.utils.AsmUtils; |
| import com.android.tools.r8.utils.DescriptorUtils; |
| import com.android.tools.r8.utils.ExceptionUtils; |
| import com.android.tools.r8.utils.FieldSignatureEquivalence; |
| import com.android.tools.r8.utils.InternalOptions; |
| import com.android.tools.r8.utils.MethodSignatureEquivalence; |
| import com.android.tools.r8.utils.StringDiagnostic; |
| import com.android.tools.r8.utils.StringUtils; |
| import com.google.common.base.Equivalence.Wrapper; |
| import com.google.common.collect.Iterables; |
| import com.google.common.collect.Sets; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.function.BiConsumer; |
| import java.util.function.Consumer; |
| import java.util.zip.CRC32; |
| import org.objectweb.asm.AnnotationVisitor; |
| import org.objectweb.asm.Attribute; |
| import org.objectweb.asm.ClassReader; |
| import org.objectweb.asm.ClassVisitor; |
| import org.objectweb.asm.FieldVisitor; |
| import org.objectweb.asm.Label; |
| import org.objectweb.asm.MethodVisitor; |
| import org.objectweb.asm.RecordComponentVisitor; |
| import org.objectweb.asm.Type; |
| import org.objectweb.asm.TypePath; |
| |
| /** Java/Jar class reader for constructing dex/graph structure. */ |
| public class JarClassFileReader<T extends DexClass> { |
| |
| private static final byte[] CLASSFILE_HEADER = ByteBuffer.allocate(4).putInt(0xCAFEBABE).array(); |
| |
| // Hidden ASM "synthetic attribute" bit we need to clear. |
| private static final int ACC_SYNTHETIC_ATTRIBUTE = 0x40000; |
| |
| private final JarApplicationReader application; |
| private final Consumer<T> classConsumer; |
| private final ClassKind<T> classKind; |
| |
| public JarClassFileReader( |
| JarApplicationReader application, Consumer<T> classConsumer, ClassKind<T> classKind) { |
| this.application = application; |
| this.classConsumer = classConsumer; |
| this.classKind = classKind; |
| } |
| |
| public void read(ProgramResource resource) throws ResourceException { |
| read(resource.getOrigin(), resource.getBytes()); |
| } |
| |
| public void read(Origin origin, byte[] bytes) { |
| ExceptionUtils.withOriginAttachmentHandler(origin, () -> internalRead(origin, bytes)); |
| } |
| |
| public void internalRead(Origin origin, byte[] bytes) { |
| if (bytes.length < CLASSFILE_HEADER.length) { |
| throw new CompilationError("Invalid empty classfile", origin); |
| } |
| for (int i = 0; i < CLASSFILE_HEADER.length; i++) { |
| if (bytes[i] != CLASSFILE_HEADER[i]) { |
| throw new CompilationError("Invalid classfile header", origin); |
| } |
| } |
| |
| ClassReader reader = new ClassReader(bytes); |
| |
| int parsingOptions = SKIP_FRAMES | SKIP_CODE; |
| |
| // If the source-file and source-debug-extension attributes are not kept we can skip all debug |
| // related attributes when parsing the class structure. |
| if (application.options.getProguardConfiguration() != null) { |
| ProguardKeepAttributes keep = |
| application.options.getProguardConfiguration().getKeepAttributes(); |
| if (!keep.sourceFile && !keep.sourceDebugExtension && !keep.methodParameters) { |
| parsingOptions |= SKIP_DEBUG; |
| } |
| } |
| reader.accept( |
| new CreateDexClassVisitor<>(origin, classKind, reader.b, application, classConsumer), |
| new Attribute[] {SyntheticMarker.getMarkerAttributePrototype()}, |
| parsingOptions); |
| |
| // Read marker. |
| if (reader.getItemCount() > CfApplicationWriter.MARKER_STRING_CONSTANT_POOL_INDEX |
| && reader.getItem(CfApplicationWriter.MARKER_STRING_CONSTANT_POOL_INDEX) > 0) { |
| try { |
| Object maybeMarker = |
| reader.readConst( |
| CfApplicationWriter.MARKER_STRING_CONSTANT_POOL_INDEX, |
| new char[reader.getMaxStringLength()]); |
| if (maybeMarker instanceof String) { |
| application.getFactory().createString((String) maybeMarker); |
| } |
| } catch (IllegalArgumentException e) { |
| // Ignore if the type of the constant is not something readConst() allows. |
| } |
| } |
| } |
| |
| private static int cleanAccessFlags(int access) { |
| // Clear the "synthetic attribute" and "deprecated" attribute-flags if present. |
| return access & ~ACC_SYNTHETIC_ATTRIBUTE & ~ACC_DEPRECATED; |
| } |
| |
| public static FieldAccessFlags createFieldAccessFlags(int access) { |
| return FieldAccessFlags.fromCfAccessFlags(cleanAccessFlags(access)); |
| } |
| |
| public static MethodAccessFlags createMethodAccessFlags(String name, int access) { |
| boolean isConstructor = |
| name.equals(Constants.INSTANCE_INITIALIZER_NAME) |
| || name.equals(Constants.CLASS_INITIALIZER_NAME); |
| return MethodAccessFlags.fromCfAccessFlags(cleanAccessFlags(access), isConstructor); |
| } |
| |
| private static AnnotationVisitor createAnnotationVisitor(String desc, boolean visible, |
| List<DexAnnotation> annotations, |
| JarApplicationReader application) { |
| assert annotations != null; |
| if (visible || retainCompileTimeAnnotation(desc, application)) { |
| int visiblity = visible ? DexAnnotation.VISIBILITY_RUNTIME : DexAnnotation.VISIBILITY_BUILD; |
| return new CreateAnnotationVisitor( |
| application, |
| (names, values) -> |
| annotations.add( |
| new DexAnnotation( |
| visiblity, createEncodedAnnotation(desc, names, values, application)))); |
| } |
| return null; |
| } |
| |
| private static boolean retainCompileTimeAnnotation( |
| String desc, JarApplicationReader application) { |
| return application.options.readCompileTimeAnnotations |
| || DexAnnotation.retainCompileTimeAnnotation( |
| application.getTypeFromDescriptor(desc), application.options); |
| } |
| |
| private static DexEncodedAnnotation createEncodedAnnotation(String desc, |
| List<DexString> names, List<DexValue> values, JarApplicationReader application) { |
| assert (names == null && values.isEmpty()) |
| || (names != null && !names.isEmpty() && names.size() == values.size()); |
| DexAnnotationElement[] elements = new DexAnnotationElement[values.size()]; |
| for (int i = 0; i < values.size(); i++) { |
| elements[i] = new DexAnnotationElement(names.get(i), values.get(i)); |
| } |
| return new DexEncodedAnnotation(application.getTypeFromDescriptor(desc), elements); |
| } |
| |
| private static class CreateDexClassVisitor<T extends DexClass> extends ClassVisitor { |
| |
| private final Origin origin; |
| private final ClassKind<T> classKind; |
| private final JarApplicationReader application; |
| private final Consumer<T> classConsumer; |
| private final ReparseContext context = new ReparseContext(); |
| |
| // DexClass data. |
| private CfVersion version; |
| private boolean deprecated; |
| private DexType type; |
| private ClassAccessFlags accessFlags; |
| private DexType superType; |
| private DexTypeList interfaces; |
| private DexString sourceFile; |
| private NestHostClassAttribute nestHost = null; |
| private final List<NestMemberClassAttribute> nestMembers = new ArrayList<>(); |
| private final Set<DexField> recordComponents = Sets.newIdentityHashSet(); |
| private EnclosingMethodAttribute enclosingMember = null; |
| private final List<InnerClassAttribute> innerClasses = new ArrayList<>(); |
| private ClassSignature classSignature = ClassSignature.noSignature(); |
| private List<DexAnnotation> annotations = null; |
| private List<DexAnnotationElement> defaultAnnotations = null; |
| private final List<DexEncodedField> staticFields = new ArrayList<>(); |
| private final List<DexEncodedField> instanceFields = new ArrayList<>(); |
| private final Set<Wrapper<DexField>> fieldSignatures = new HashSet<>(); |
| private final List<DexEncodedMethod> directMethods = new ArrayList<>(); |
| private final List<DexEncodedMethod> virtualMethods = new ArrayList<>(); |
| private final Set<Wrapper<DexMethod>> methodSignatures = new HashSet<>(); |
| private boolean hasReachabilitySensitiveMethod = false; |
| private SyntheticMarker syntheticMarker = null; |
| |
| public CreateDexClassVisitor( |
| Origin origin, |
| ClassKind<T> classKind, |
| byte[] classCache, |
| JarApplicationReader application, |
| Consumer<T> classConsumer) { |
| super(ASM_VERSION); |
| this.origin = origin; |
| this.classKind = classKind; |
| this.classConsumer = classConsumer; |
| this.context.classCache = classCache; |
| this.application = application; |
| } |
| |
| @Override |
| public void visitAttribute(Attribute attribute) { |
| SyntheticMarker marker = SyntheticMarker.readMarkerAttribute(attribute); |
| if (marker != null) { |
| assert syntheticMarker == null; |
| syntheticMarker = marker; |
| } |
| } |
| |
| @Override |
| public void visitInnerClass(String name, String outerName, String innerName, int access) { |
| if (outerName != null && innerName != null) { |
| String separator = DescriptorUtils.computeInnerClassSeparator(outerName, name, innerName); |
| if (separator == null && version.isLessThan(CfVersion.V9)) { |
| application.options.reporter.info( |
| new StringDiagnostic( |
| StringUtils.lines( |
| "Malformed inner-class attribute:", |
| "\touterTypeInternal: " + outerName, |
| "\tinnerTypeInternal: " + name, |
| "\tinnerName: " + innerName), |
| origin)); |
| } |
| } |
| innerClasses.add( |
| new InnerClassAttribute( |
| access, |
| application.getTypeFromName(name), |
| outerName == null ? null : application.getTypeFromName(outerName), |
| innerName == null ? null : application.getString(innerName))); |
| } |
| |
| @Override |
| public void visitOuterClass(String owner, String name, String desc) { |
| // This is called for anonymous and local inner classes defined in classes or in methods. |
| assert enclosingMember == null; |
| DexType ownerType = application.getTypeFromName(owner); |
| enclosingMember = |
| name == null |
| ? new EnclosingMethodAttribute(ownerType) |
| : new EnclosingMethodAttribute(application.getMethod(ownerType, name, desc)); |
| } |
| |
| @Override |
| public void visitNestHost(String nestHost) { |
| assert this.nestHost == null && nestMembers.isEmpty(); |
| DexType nestHostType = application.getTypeFromName(nestHost); |
| this.nestHost = new NestHostClassAttribute(nestHostType); |
| } |
| |
| @Override |
| public void visitNestMember(String nestMember) { |
| assert nestHost == null; |
| DexType nestMemberType = application.getTypeFromName(nestMember); |
| nestMembers.add(new NestMemberClassAttribute(nestMemberType)); |
| } |
| |
| private String illegalClassFilePrefix(ClassAccessFlags accessFlags, String name) { |
| return "Illegal class file: " |
| + (accessFlags.isInterface() ? "Interface" : "Class") |
| + " " |
| + name; |
| } |
| |
| private String illegalClassFilePostfix(CfVersion version) { |
| return "Class file version " + version; |
| } |
| |
| private String illegalClassFileMessage( |
| ClassAccessFlags accessFlags, String name, CfVersion version, String message) { |
| return illegalClassFilePrefix(accessFlags, name) |
| + " " + message |
| + ". " + illegalClassFilePostfix(version) + "."; |
| } |
| |
| @Override |
| public RecordComponentVisitor visitRecordComponent( |
| String name, String descriptor, String signature) { |
| assert name != null; |
| assert descriptor != null; |
| // Javac generated record components are only the instance fields, so we just reuse the field |
| // to avoid duplicating the field and field signature rewriting logic. |
| DexField field = |
| application |
| .getFactory() |
| .createField( |
| type, application.getTypeFromDescriptor(descriptor), application.getString(name)); |
| recordComponents.add(field); |
| return super.visitRecordComponent(name, descriptor, signature); |
| } |
| |
| @Override |
| public void visitPermittedSubclass(String permittedSubclass) { |
| throw new CompilationError("Sealed classes are not supported", origin); |
| } |
| |
| @Override |
| public void visit( |
| int rawVersion, |
| int access, |
| String name, |
| String signature, |
| String superName, |
| String[] interfaces) { |
| version = CfVersion.fromRaw(rawVersion); |
| if (InternalOptions.SUPPORTED_CF_VERSION.isLessThan(version)) { |
| throw new CompilationError("Unsupported class file version: " + version, origin); |
| } |
| if (version.isGreaterThanOrEqualTo(InternalOptions.EXPERIMENTAL_CF_VERSION)) { |
| application.options.warningExperimentalClassFileVersion(origin); |
| } |
| this.deprecated = AsmUtils.isDeprecated(access); |
| accessFlags = ClassAccessFlags.fromCfAccessFlags(cleanAccessFlags(access)); |
| type = application.getTypeFromName(name); |
| // Check if constraints from |
| // https://docs.oracle.com/javase/specs/jvms/se7/html/jvms-4.html#jvms-4.1 are met. |
| if (!accessFlags.areValid(version, name.endsWith("/package-info"))) { |
| throw new CompilationError( |
| illegalClassFileMessage( |
| accessFlags, |
| name, |
| version, |
| "has invalid access flags. Found: " + accessFlags.toString()), |
| origin); |
| } |
| if (superName == null && !name.equals(Constants.JAVA_LANG_OBJECT_NAME)) { |
| throw new CompilationError( |
| illegalClassFileMessage(accessFlags, name, version, "is missing a super type"), origin); |
| } |
| if (accessFlags.isInterface() |
| && !Objects.equals(superName, Constants.JAVA_LANG_OBJECT_NAME)) { |
| throw new CompilationError( |
| illegalClassFileMessage( |
| accessFlags, |
| name, |
| version, |
| "must extend class java.lang.Object. Found: " + superName), |
| origin); |
| } |
| checkName(name); |
| assert superName != null || name.equals(Constants.JAVA_LANG_OBJECT_NAME); |
| superType = superName == null ? null : application.getTypeFromName(superName); |
| this.interfaces = application.getTypeListFromNames(interfaces); |
| if (application.options.parseSignatureAttribute()) { |
| classSignature = |
| GenericSignature.parseClassSignature( |
| name, signature, origin, application.getFactory(), application.options.reporter); |
| } |
| } |
| |
| @Override |
| public void visitSource(String source, String debug) { |
| if (source != null) { |
| sourceFile = application.getString(source); |
| } |
| if (debug != null) { |
| getAnnotations().add( |
| DexAnnotation.createSourceDebugExtensionAnnotation( |
| new DexValueString(application.getString(debug)), application.getFactory())); |
| } |
| } |
| |
| @Override |
| public FieldVisitor visitField( |
| int access, String name, String desc, String signature, Object value) { |
| if (classKind == ClassKind.LIBRARY) { |
| FieldAccessFlags flags = createFieldAccessFlags(access); |
| if (flags.isPrivate()) { |
| return null; |
| } |
| } |
| checkName(name); |
| return new CreateFieldVisitor( |
| this, access, name, desc, signature, classKind == ClassKind.LIBRARY ? null : value); |
| } |
| |
| @Override |
| public MethodVisitor visitMethod( |
| int access, String name, String desc, String signature, String[] exceptions) { |
| if (classKind == ClassKind.LIBRARY) { |
| MethodAccessFlags flags = createMethodAccessFlags(name, access); |
| if ((flags.isStatic() && flags.isConstructor()) || flags.isPrivate()) { |
| return null; |
| } |
| } |
| checkName(name); |
| return new CreateMethodVisitor(access, name, desc, signature, exceptions, this); |
| } |
| |
| @Override |
| public AnnotationVisitor visitAnnotation(String desc, boolean visible) { |
| return createAnnotationVisitor(desc, visible, getAnnotations(), application); |
| } |
| |
| @Override |
| public AnnotationVisitor visitTypeAnnotation(int typeRef, TypePath typePath, String desc, |
| boolean visible) { |
| // Java 8 type annotations are not supported by Dex, thus ignore them. |
| return null; |
| } |
| |
| @Override |
| public void visitEnd() { |
| if (defaultAnnotations != null) { |
| addAnnotation(DexAnnotation.createAnnotationDefaultAnnotation( |
| type, defaultAnnotations, application.getFactory())); |
| } |
| checkReachabilitySensitivity(); |
| checkRecord(); |
| T clazz = |
| classKind.create( |
| type, |
| Kind.CF, |
| origin, |
| accessFlags, |
| superType, |
| interfaces, |
| sourceFile, |
| nestHost, |
| nestMembers, |
| enclosingMember, |
| innerClasses, |
| classSignature, |
| createAnnotationSet(annotations, application.options), |
| staticFields.toArray(DexEncodedField.EMPTY_ARRAY), |
| instanceFields.toArray(DexEncodedField.EMPTY_ARRAY), |
| directMethods.toArray(DexEncodedMethod.EMPTY_ARRAY), |
| virtualMethods.toArray(DexEncodedMethod.EMPTY_ARRAY), |
| application.getFactory().getSkipNameValidationForTesting(), |
| getChecksumSupplier(classKind), |
| syntheticMarker); |
| InnerClassAttribute innerClassAttribute = clazz.getInnerClassAttributeForThisClass(); |
| // A member class should not be a local or anonymous class. |
| if (innerClassAttribute != null && innerClassAttribute.getOuter() != null) { |
| if (innerClassAttribute.isAnonymous()) { |
| assert innerClassAttribute.getInnerName() == null; |
| // If the enclosing member is not null, the intention would be an anonymous class, and |
| // thus the outer-class reference should have been null. If the enclosing member is null, |
| // it is likely due to the missing enclosing member. In either case, we can recover |
| // InnerClasses attribute by erasing the outer-class reference. |
| InnerClassAttribute recoveredAttribute = new InnerClassAttribute( |
| innerClassAttribute.getAccess(), innerClassAttribute.getInner(), null, null); |
| clazz.replaceInnerClassAttributeForThisClass(recoveredAttribute); |
| } else if (enclosingMember != null) { |
| assert innerClassAttribute.isNamed(); |
| // It is unclear whether the intention was a member class or a local class. Fail hard. |
| throw new CompilationError( |
| StringUtils.lines( |
| "A member class cannot also be a (non-member) local class at the same time.", |
| "This is likely due to invalid EnclosingMethod and InnerClasses attributes:", |
| enclosingMember.toString(), |
| innerClassAttribute.toString()), |
| origin); |
| } |
| } |
| if (enclosingMember == null |
| && (clazz.isLocalClass() || clazz.isAnonymousClass()) |
| && CfVersion.V1_6.isLessThan(version)) { |
| application.options.warningMissingEnclosingMember(clazz.type, clazz.origin, version); |
| } |
| if (!clazz.isLibraryClass()) { |
| context.owner = clazz; |
| } |
| if (clazz.isProgramClass()) { |
| DexProgramClass programClass = clazz.asProgramClass(); |
| programClass.setInitialClassFileVersion(version); |
| if (deprecated) { |
| programClass.setDeprecated(); |
| } |
| } |
| classConsumer.accept(clazz); |
| } |
| |
| private void checkRecord() { |
| if (!accessFlags.isRecord()) { |
| return; |
| } |
| // TODO(b/169645628): Change this logic if we start stripping the record components. |
| // Another approach would be to mark a bit in fields that are record components instead. |
| String message = "Records are expected to have one record component per instance field."; |
| if (recordComponents.size() != instanceFields.size()) { |
| throw new CompilationError(message, origin); |
| } |
| for (DexEncodedField instanceField : instanceFields) { |
| if (!recordComponents.contains(instanceField.getReference())) { |
| throw new CompilationError( |
| message + " Unmatched field " + instanceField.getReference() + ".", origin); |
| } |
| } |
| } |
| |
| private ChecksumSupplier getChecksumSupplier(ClassKind<T> classKind) { |
| if (application.options.encodeChecksums && classKind == ClassKind.PROGRAM) { |
| CRC32 crc = new CRC32(); |
| crc.update(this.context.classCache, 0, this.context.classCache.length); |
| final long value = crc.getValue(); |
| return clazz -> value; |
| } |
| return DexProgramClass::invalidChecksumRequest; |
| } |
| |
| private void checkName(String name) { |
| if (!application.getFactory().getSkipNameValidationForTesting() |
| && !DexString.isValidSimpleName(application.options.minApiLevel, name)) { |
| throw new CompilationError("Space characters in SimpleName '" |
| + name + "' are not allowed prior to DEX version 040"); |
| } |
| } |
| |
| // If anything is marked reachability sensitive, all methods need to be parsed including |
| // locals information. This propagates the reachability sensitivity bit so that if any field |
| // or method is annotated, all methods get parsed with locals information. |
| private void checkReachabilitySensitivity() { |
| if (hasReachabilitySensitiveMethod || hasReachabilitySensitiveField()) { |
| for (DexEncodedMethod method : Iterables.concat(directMethods, virtualMethods)) { |
| Code code = method.getCode(); |
| if (code != null && code.isCfCode()) { |
| code.asLazyCfCode().markReachabilitySensitive(); |
| } |
| } |
| } |
| } |
| |
| private boolean hasReachabilitySensitiveField() { |
| DexType reachabilitySensitive = application.getFactory().annotationReachabilitySensitive; |
| for (DexEncodedField field : Iterables.concat(instanceFields, staticFields)) { |
| for (DexAnnotation annotation : field.annotations().annotations) { |
| if (annotation.annotation.type == reachabilitySensitive) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| private void addDefaultAnnotation(String name, DexValue value) { |
| if (defaultAnnotations == null) { |
| defaultAnnotations = new ArrayList<>(); |
| } |
| defaultAnnotations.add(new DexAnnotationElement(application.getString(name), value)); |
| } |
| |
| private void addAnnotation(DexAnnotation annotation) { |
| getAnnotations().add(annotation); |
| } |
| |
| private List<DexAnnotation> getAnnotations() { |
| if (annotations == null) { |
| annotations = new ArrayList<>(); |
| } |
| return annotations; |
| } |
| |
| public boolean isInANest() { |
| return !nestMembers.isEmpty() || nestHost != null; |
| } |
| } |
| |
| private static DexAnnotationSet createAnnotationSet( |
| List<DexAnnotation> annotations, InternalOptions options) { |
| if (annotations == null || annotations.isEmpty()) { |
| return DexAnnotationSet.empty(); |
| } |
| if (options.isGeneratingDex()) { |
| DexType dupType = DexAnnotationSet.findDuplicateEntryType(annotations); |
| if (dupType != null) { |
| throw new CompilationError( |
| "Multiple annotations of type `" + dupType.toSourceString() + "`"); |
| } |
| } |
| return DexAnnotationSet.create(annotations.toArray(DexAnnotation.EMPTY_ARRAY)); |
| } |
| |
| private static class CreateFieldVisitor extends FieldVisitor { |
| |
| private final CreateDexClassVisitor<?> parent; |
| private final int access; |
| private final String name; |
| private final String desc; |
| private final Object value; |
| private final FieldTypeSignature fieldSignature; |
| private List<DexAnnotation> annotations = null; |
| |
| public CreateFieldVisitor( |
| CreateDexClassVisitor<?> parent, |
| int access, |
| String name, |
| String desc, |
| String signature, |
| Object value) { |
| super(ASM_VERSION); |
| this.parent = parent; |
| this.access = access; |
| this.name = name; |
| this.desc = desc; |
| this.value = value; |
| this.fieldSignature = |
| parent.application.options.parseSignatureAttribute() |
| ? GenericSignature.parseFieldTypeSignature( |
| name, |
| signature, |
| parent.origin, |
| parent.application.getFactory(), |
| parent.application.options.reporter) |
| : FieldTypeSignature.noSignature(); |
| } |
| |
| @Override |
| public AnnotationVisitor visitAnnotation(String desc, boolean visible) { |
| return createAnnotationVisitor(desc, visible, getAnnotations(), parent.application); |
| } |
| |
| @Override |
| public AnnotationVisitor visitTypeAnnotation(int typeRef, TypePath typePath, String desc, |
| boolean visible) { |
| // Java 8 type annotations are not supported by Dex, thus ignore them. |
| return null; |
| } |
| |
| @Override |
| public void visitEnd() { |
| FieldAccessFlags flags = createFieldAccessFlags(access); |
| DexField dexField = parent.application.getField(parent.type, name, desc); |
| Wrapper<DexField> signature = FieldSignatureEquivalence.get().wrap(dexField); |
| if (parent.fieldSignatures.add(signature)) { |
| DexAnnotationSet annotationSet = |
| createAnnotationSet(annotations, parent.application.options); |
| DexValue staticValue = flags.isStatic() ? getStaticValue(value, dexField.type) : null; |
| DexEncodedField field = |
| new DexEncodedField( |
| dexField, |
| flags, |
| fieldSignature, |
| annotationSet, |
| staticValue, |
| AsmUtils.isDeprecated(access)); |
| if (flags.isStatic()) { |
| parent.staticFields.add(field); |
| } else { |
| parent.instanceFields.add(field); |
| } |
| } else { |
| parent.application.options.reporter.warning( |
| new StringDiagnostic( |
| String.format("Field `%s` has multiple definitions", dexField.toSourceString()))); |
| } |
| } |
| |
| private DexValue getStaticValue(Object value, DexType type) { |
| if (value == null) { |
| return null; |
| } |
| DexItemFactory factory = parent.application.getFactory(); |
| if (type == factory.booleanType) { |
| int i = (Integer) value; |
| assert 0 <= i && i <= 1; |
| return DexValueBoolean.create(i == 1); |
| } |
| if (type == factory.byteType) { |
| return DexValueByte.create(((Integer) value).byteValue()); |
| } |
| if (type == factory.shortType) { |
| return DexValueShort.create(((Integer) value).shortValue()); |
| } |
| if (type == factory.charType) { |
| return DexValueChar.create((char) ((Integer) value).intValue()); |
| } |
| if (type == factory.intType) { |
| return DexValueInt.create((Integer) value); |
| } |
| if (type == factory.floatType) { |
| return DexValueFloat.create((Float) value); |
| } |
| if (type == factory.longType) { |
| return DexValueLong.create((Long) value); |
| } |
| if (type == factory.doubleType) { |
| return DexValueDouble.create((Double) value); |
| } |
| if (type == factory.stringType) { |
| return new DexValueString(factory.createString((String) value)); |
| } |
| throw new Unreachable("Unexpected static-value type " + type); |
| } |
| |
| private List<DexAnnotation> getAnnotations() { |
| if (annotations == null) { |
| annotations = new ArrayList<>(); |
| } |
| return annotations; |
| } |
| } |
| |
| private static class CreateMethodVisitor extends MethodVisitor { |
| |
| private final String name; |
| final CreateDexClassVisitor<?> parent; |
| private final int parameterCount; |
| private List<DexAnnotation> annotations = null; |
| private DexValue defaultAnnotation = null; |
| private int annotableParameterCount = -1; |
| private List<List<DexAnnotation>> parameterAnnotationsLists = null; |
| private List<DexValue> parameterNames = null; |
| private List<DexValue> parameterFlags = null; |
| private final MethodTypeSignature genericSignature; |
| final DexMethod method; |
| final MethodAccessFlags flags; |
| final boolean deprecated; |
| Code code = null; |
| |
| public CreateMethodVisitor( |
| int access, |
| String name, |
| String desc, |
| String signature, |
| String[] exceptions, |
| CreateDexClassVisitor<?> parent) { |
| super(ASM_VERSION); |
| this.name = name; |
| this.parent = parent; |
| this.method = parent.application.getMethod(parent.type, name, desc); |
| this.flags = createMethodAccessFlags(name, access); |
| this.deprecated = AsmUtils.isDeprecated(access); |
| parameterCount = DescriptorUtils.getArgumentCount(desc); |
| if (exceptions != null && exceptions.length > 0) { |
| DexValue[] values = new DexValue[exceptions.length]; |
| for (int i = 0; i < exceptions.length; i++) { |
| values[i] = new DexValueType(parent.application.getTypeFromName(exceptions[i])); |
| } |
| addAnnotation(DexAnnotation.createThrowsAnnotation( |
| values, parent.application.getFactory())); |
| } |
| genericSignature = |
| parent.application.options.parseSignatureAttribute() |
| ? GenericSignature.parseMethodSignature( |
| name, |
| signature, |
| parent.origin, |
| parent.application.getFactory(), |
| parent.application.options.reporter) |
| : MethodTypeSignature.noSignature(); |
| } |
| |
| @Override |
| public AnnotationVisitor visitAnnotation(String desc, boolean visible) { |
| return createAnnotationVisitor(desc, visible, getAnnotations(), parent.application); |
| } |
| |
| @Override |
| public AnnotationVisitor visitAnnotationDefault() { |
| return new CreateAnnotationVisitor(parent.application, (names, elements) -> { |
| assert elements.size() == 1; |
| defaultAnnotation = elements.get(0); |
| }); |
| } |
| |
| @Override |
| public AnnotationVisitor visitTypeAnnotation(int typeRef, TypePath typePath, String desc, |
| boolean visible) { |
| // Java 8 type annotations are not supported by Dex, thus ignore them. |
| return null; |
| } |
| |
| @Override |
| public void visitAnnotableParameterCount(int parameterCount, boolean visible) { |
| if (annotableParameterCount != -1) { |
| // TODO(113565942): We assume that the runtime visible and runtime invisible parameter |
| // count is always the same. It doesn't have to be according to the classfile format, so |
| // we really should split it into two sets. |
| assert annotableParameterCount == parameterCount; |
| } |
| annotableParameterCount = parameterCount; |
| } |
| |
| @Override |
| public AnnotationVisitor visitParameterAnnotation(int parameter, String desc, boolean visible) { |
| if (parameterAnnotationsLists == null) { |
| if (annotableParameterCount == -1) { |
| annotableParameterCount = parameterCount; |
| } |
| parameterAnnotationsLists = new ArrayList<>(annotableParameterCount); |
| for (int i = 0; i < annotableParameterCount; i++) { |
| parameterAnnotationsLists.add(new ArrayList<>()); |
| } |
| } |
| assert mv == null; |
| return createAnnotationVisitor(desc, visible, |
| parameterAnnotationsLists.get(parameter), parent.application); |
| } |
| |
| @Override |
| public AnnotationVisitor visitInsnAnnotation(int typeRef, TypePath typePath, String desc, |
| boolean visible) { |
| // Java 8 type annotations are not supported by Dex, thus ignore them. |
| return null; |
| } |
| |
| @Override |
| public AnnotationVisitor visitLocalVariableAnnotation(int typeRef, TypePath typePath, |
| Label[] start, Label[] end, int[] index, String desc, boolean visible) { |
| // Java 8 type annotations are not supported by Dex, thus ignore them. |
| return null; |
| } |
| |
| @Override |
| public AnnotationVisitor visitTryCatchAnnotation(int typeRef, TypePath typePath, String desc, |
| boolean visible) { |
| // Java 8 type annotations are not supported by Dex, thus ignore them. |
| return null; |
| } |
| |
| @Override |
| public void visitParameter(String name, int access) { |
| if (parameterNames == null) { |
| assert parameterFlags == null; |
| parameterNames = new ArrayList<>(parameterCount); |
| parameterFlags = new ArrayList<>(parameterCount); |
| } |
| parameterNames.add(new DexValueString(parent.application.getFactory().createString(name))); |
| parameterFlags.add(DexValueInt.create(access)); |
| super.visitParameter(name, access); |
| } |
| |
| @Override |
| public void visitCode() { |
| throw new Unreachable("visitCode() should not be called when SKIP_CODE is set"); |
| } |
| |
| private boolean classRequiresCode() { |
| return parent.classKind == ClassKind.PROGRAM |
| || (!parent.application.options.canUseNestBasedAccess() |
| && parent.classKind == ClassKind.CLASSPATH |
| && parent.isInANest()); |
| } |
| |
| @Override |
| public void visitEnd() { |
| InternalOptions options = parent.application.options; |
| if (!flags.isAbstract() && !flags.isNative() && classRequiresCode()) { |
| code = new LazyCfCode(method, parent.origin, parent.context, parent.application); |
| } |
| ParameterAnnotationsList parameterAnnotationsList; |
| if (parameterAnnotationsLists == null) { |
| parameterAnnotationsList = ParameterAnnotationsList.empty(); |
| } else { |
| DexAnnotationSet[] sets = new DexAnnotationSet[parameterAnnotationsLists.size()]; |
| for (int i = 0; i < parameterAnnotationsLists.size(); i++) { |
| sets[i] = createAnnotationSet(parameterAnnotationsLists.get(i), options); |
| } |
| parameterAnnotationsList = ParameterAnnotationsList.create(sets); |
| } |
| if (parameterNames != null) { |
| assert parameterFlags != null; |
| if (parameterNames.size() != parameterCount) { |
| options.warningInvalidParameterAnnotations( |
| method, parent.origin, parameterCount, parameterNames.size()); |
| } |
| getAnnotations().add(DexAnnotation.createMethodParametersAnnotation( |
| parameterNames.toArray(DexValue.EMPTY_ARRAY), |
| parameterFlags.toArray(DexValue.EMPTY_ARRAY), |
| parent.application.getFactory())); |
| } |
| DexEncodedMethod dexMethod = |
| DexEncodedMethod.create( |
| method, |
| flags, |
| genericSignature, |
| createAnnotationSet(annotations, options), |
| parameterAnnotationsList, |
| code, |
| false, |
| parent.version, |
| AndroidApiLevel.UNKNOWN, |
| AndroidApiLevel.UNKNOWN, |
| deprecated); |
| Wrapper<DexMethod> signature = MethodSignatureEquivalence.get().wrap(method); |
| if (parent.methodSignatures.add(signature)) { |
| parent.hasReachabilitySensitiveMethod |= isReachabilitySensitive(); |
| if (flags.isStatic() || flags.isConstructor() || flags.isPrivate()) { |
| parent.directMethods.add(dexMethod); |
| } else { |
| parent.virtualMethods.add(dexMethod); |
| } |
| } else { |
| options.reporter.warning( |
| new StringDiagnostic( |
| String.format( |
| "Ignoring an implementation of the method `%s` because it has multiple " |
| + "definitions", |
| method.toSourceString()))); |
| } |
| if (defaultAnnotation != null) { |
| parent.addDefaultAnnotation(name, defaultAnnotation); |
| } |
| } |
| |
| private boolean isReachabilitySensitive() { |
| DexType reachabilitySensitive = |
| parent.application.getFactory().annotationReachabilitySensitive; |
| for (DexAnnotation annotation : getAnnotations()) { |
| if (annotation.annotation.type == reachabilitySensitive) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private List<DexAnnotation> getAnnotations() { |
| if (annotations == null) { |
| annotations = new ArrayList<>(); |
| } |
| return annotations; |
| } |
| |
| private void addAnnotation(DexAnnotation annotation) { |
| getAnnotations().add(annotation); |
| } |
| } |
| |
| private static class CreateAnnotationVisitor extends AnnotationVisitor { |
| |
| private final JarApplicationReader application; |
| private final BiConsumer<List<DexString>, List<DexValue>> onVisitEnd; |
| private List<DexString> names = null; |
| private final List<DexValue> values = new ArrayList<>(); |
| |
| public CreateAnnotationVisitor( |
| JarApplicationReader application, BiConsumer<List<DexString>, List<DexValue>> onVisitEnd) { |
| super(ASM_VERSION); |
| this.application = application; |
| this.onVisitEnd = onVisitEnd; |
| } |
| |
| @Override |
| public void visit(String name, Object value) { |
| addElement(name, getDexValue(value)); |
| } |
| |
| @Override |
| public void visitEnum(String name, String desc, String value) { |
| DexType owner = application.getTypeFromDescriptor(desc); |
| addElement(name, new DexValueEnum(application.getField(owner, value, desc))); |
| } |
| |
| @Override |
| public AnnotationVisitor visitAnnotation(String name, String desc) { |
| return new CreateAnnotationVisitor(application, (names, values) -> |
| addElement(name, new DexValueAnnotation( |
| createEncodedAnnotation(desc, names, values, application)))); |
| } |
| |
| @Override |
| public AnnotationVisitor visitArray(String name) { |
| return new CreateAnnotationVisitor(application, (names, values) -> { |
| assert names == null; |
| addElement(name, new DexValueArray(values.toArray(DexValue.EMPTY_ARRAY))); |
| }); |
| } |
| |
| @Override |
| public void visitEnd() { |
| onVisitEnd.accept(names, values); |
| } |
| |
| private void addElement(String name, DexValue value) { |
| if (name != null) { |
| if (names == null) { |
| names = new ArrayList<>(); |
| } |
| names.add(application.getString(name)); |
| } |
| values.add(value); |
| } |
| |
| private static DexValueArray getDexValueArray(Object value) { |
| if (value instanceof byte[]) { |
| byte[] values = (byte[]) value; |
| DexValue[] elements = new DexValue[values.length]; |
| for (int i = 0; i < values.length; i++) { |
| elements[i] = DexValueByte.create(values[i]); |
| } |
| return new DexValueArray(elements); |
| } else if (value instanceof boolean[]) { |
| boolean[] values = (boolean[]) value; |
| DexValue[] elements = new DexValue[values.length]; |
| for (int i = 0; i < values.length; i++) { |
| elements[i] = DexValueBoolean.create(values[i]); |
| } |
| return new DexValueArray(elements); |
| } else if (value instanceof char[]) { |
| char[] values = (char[]) value; |
| DexValue[] elements = new DexValue[values.length]; |
| for (int i = 0; i < values.length; i++) { |
| elements[i] = DexValueChar.create(values[i]); |
| } |
| return new DexValueArray(elements); |
| } else if (value instanceof short[]) { |
| short[] values = (short[]) value; |
| DexValue[] elements = new DexValue[values.length]; |
| for (int i = 0; i < values.length; i++) { |
| elements[i] = DexValueShort.create(values[i]); |
| } |
| return new DexValueArray(elements); |
| } else if (value instanceof int[]) { |
| int[] values = (int[]) value; |
| DexValue[] elements = new DexValue[values.length]; |
| for (int i = 0; i < values.length; i++) { |
| elements[i] = DexValueInt.create(values[i]); |
| } |
| return new DexValueArray(elements); |
| } else if (value instanceof long[]) { |
| long[] values = (long[]) value; |
| DexValue[] elements = new DexValue[values.length]; |
| for (int i = 0; i < values.length; i++) { |
| elements[i] = DexValueLong.create(values[i]); |
| } |
| return new DexValueArray(elements); |
| } else if (value instanceof float[]) { |
| float[] values = (float[]) value; |
| DexValue[] elements = new DexValue[values.length]; |
| for (int i = 0; i < values.length; i++) { |
| elements[i] = DexValueFloat.create(values[i]); |
| } |
| return new DexValueArray(elements); |
| } else if (value instanceof double[]) { |
| double[] values = (double[]) value; |
| DexValue[] elements = new DexValue[values.length]; |
| for (int i = 0; i < values.length; i++) { |
| elements[i] = DexValueDouble.create(values[i]); |
| } |
| return new DexValueArray(elements); |
| } |
| throw new Unreachable("Unexpected type of annotation value: " + value); |
| } |
| |
| private DexValue getDexValue(Object value) { |
| if (value == null) { |
| return DexValueNull.NULL; |
| } |
| if (value instanceof Byte) { |
| return DexValueByte.create((Byte) value); |
| } else if (value instanceof Boolean) { |
| return DexValueBoolean.create((Boolean) value); |
| } else if (value instanceof Character) { |
| return DexValueChar.create((Character) value); |
| } else if (value instanceof Short) { |
| return DexValueShort.create((Short) value); |
| } else if (value instanceof Integer) { |
| return DexValueInt.create((Integer) value); |
| } else if (value instanceof Long) { |
| return DexValueLong.create((Long) value); |
| } else if (value instanceof Float) { |
| return DexValueFloat.create((Float) value); |
| } else if (value instanceof Double) { |
| return DexValueDouble.create((Double) value); |
| } else if (value instanceof String) { |
| return new DexValueString(application.getString((String) value)); |
| } else if (value instanceof Type) { |
| return new DexValueType(application.getTypeFromDescriptor(((Type) value).getDescriptor())); |
| } |
| return getDexValueArray(value); |
| } |
| } |
| |
| public static class ReparseContext { |
| |
| // This will hold the content of the whole class. Once all the methods of the class are swapped |
| // from this to the actual JarCode, no other references would be left and the content can be |
| // GC'd. |
| public byte[] classCache; |
| public DexClass owner; |
| public final List<Code> codeList = new ArrayList<>(); |
| } |
| } |
