| // Copyright (c) 2017, 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.optimize; |
| |
| import static com.android.tools.r8.utils.AndroidApiLevelUtils.isApiSafeForMemberRebinding; |
| |
| import com.android.tools.r8.androidapi.AndroidApiLevelCompute; |
| import com.android.tools.r8.androidapi.ComputedApiLevel; |
| import com.android.tools.r8.graph.AppView; |
| import com.android.tools.r8.graph.DexClass; |
| import com.android.tools.r8.graph.DexClassAndField; |
| import com.android.tools.r8.graph.DexClassAndMethod; |
| import com.android.tools.r8.graph.DexDefinitionSupplier; |
| import com.android.tools.r8.graph.DexEncodedMethod; |
| import com.android.tools.r8.graph.DexField; |
| import com.android.tools.r8.graph.DexMethod; |
| import com.android.tools.r8.graph.DexProgramClass; |
| import com.android.tools.r8.graph.DexType; |
| import com.android.tools.r8.graph.FieldAccessInfoCollection; |
| import com.android.tools.r8.graph.LibraryMethod; |
| import com.android.tools.r8.graph.MemberRebindingBridgeCode; |
| import com.android.tools.r8.graph.MethodAccessFlags; |
| import com.android.tools.r8.graph.MethodAccessInfoCollection; |
| import com.android.tools.r8.graph.MethodResolutionResult; |
| import com.android.tools.r8.graph.MethodResolutionResult.SingleResolutionResult; |
| import com.android.tools.r8.graph.ProgramMethod; |
| import com.android.tools.r8.graph.UseRegistry; |
| import com.android.tools.r8.ir.code.Invoke.Type; |
| import com.android.tools.r8.ir.optimize.Inliner.ConstraintWithTarget; |
| import com.android.tools.r8.shaking.AppInfoWithLiveness; |
| import com.android.tools.r8.utils.BiForEachable; |
| import com.android.tools.r8.utils.InternalOptions; |
| import com.android.tools.r8.utils.OptionalBool; |
| import com.android.tools.r8.utils.Pair; |
| import com.android.tools.r8.utils.ThreadUtils; |
| import com.android.tools.r8.utils.TriConsumer; |
| import com.android.tools.r8.utils.collections.ProgramMethodSet; |
| import com.google.common.collect.Iterables; |
| import com.google.common.collect.Sets; |
| import java.util.ArrayList; |
| import java.util.Comparator; |
| import java.util.IdentityHashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.ExecutorService; |
| import java.util.function.BiFunction; |
| import java.util.function.Function; |
| |
| public class MemberRebindingAnalysis { |
| |
| private final AndroidApiLevelCompute androidApiLevelCompute; |
| private final AppView<AppInfoWithLiveness> appView; |
| private final InternalOptions options; |
| |
| private final MemberRebindingLens.Builder lensBuilder; |
| private final Map<DexMethod, DexClassAndMethod> insertedLibraryBridges = new IdentityHashMap<>(); |
| |
| public MemberRebindingAnalysis(AppView<AppInfoWithLiveness> appView) { |
| assert appView.graphLens().isContextFreeForMethods(); |
| this.androidApiLevelCompute = appView.apiLevelCompute(); |
| this.appView = appView; |
| this.options = appView.options(); |
| this.lensBuilder = MemberRebindingLens.builder(appView); |
| } |
| |
| private DexMethod validMemberRebindingTargetForNonProgramMethod( |
| DexClassAndMethod resolvedMethod, |
| SingleResolutionResult<?> resolutionResult, |
| ProgramMethodSet contexts, |
| Type invokeType, |
| DexMethod original) { |
| assert !resolvedMethod.isProgramMethod(); |
| |
| if (invokeType.isDirect()) { |
| return original; |
| } |
| |
| if (!invokeType.isSuper() || !options.canHaveSuperInvokeBug()) { |
| LibraryMethod eligibleLibraryMethod = null; |
| SingleResolutionResult<?> currentResolutionResult = resolutionResult; |
| while (currentResolutionResult != null) { |
| DexClassAndMethod currentResolvedMethod = currentResolutionResult.getResolutionPair(); |
| if (canRebindDirectlyToLibraryMethod( |
| currentResolvedMethod, |
| currentResolutionResult.withInitialResolutionHolder( |
| currentResolutionResult.getResolvedHolder()), |
| contexts, |
| invokeType, |
| original)) { |
| eligibleLibraryMethod = currentResolvedMethod.asLibraryMethod(); |
| } |
| if (appView.getAssumeInfoCollection().contains(currentResolvedMethod)) { |
| break; |
| } |
| DexClass currentResolvedHolder = currentResolvedMethod.getHolder(); |
| if (resolvedMethod.getDefinition().belongsToVirtualPool() |
| && !currentResolvedHolder.isInterface() |
| && currentResolvedHolder.getSuperType() != null) { |
| currentResolutionResult = |
| appView |
| .appInfo() |
| .resolveMethodOnClassLegacy(currentResolvedHolder.getSuperType(), original) |
| .asSingleResolution(); |
| } else { |
| break; |
| } |
| } |
| if (eligibleLibraryMethod != null) { |
| return eligibleLibraryMethod.getReference(); |
| } |
| } |
| |
| if (resolvedMethod.getDefinition().isStatic()) { |
| return original; |
| } |
| |
| // If we could not find a valid library method to rebind to then create a bridge on the top most |
| // program class before crossing into library. |
| DexClass newHolder = |
| resolvedMethod.getHolder().isInterface() |
| ? firstProgramClassForTarget( |
| appView, resolvedMethod.getReference(), original.getHolderType()) |
| : firstProgramClass(appView, original.getHolderType()); |
| if (newHolder == null || newHolder.isNotProgramClass()) { |
| return original; |
| } |
| // We cannot insert default methods on interfaces after desugaring, so we return the resolved |
| // method. |
| if (newHolder.isInterface() && !options.canUseDefaultAndStaticInterfaceMethods()) { |
| return resolvedMethod.getReference(); |
| } |
| if (!appView.getAssumeInfoCollection().get(resolvedMethod).isEmpty()) { |
| return original; |
| } |
| DexMethod bridge = original.withHolder(newHolder, appView.dexItemFactory()); |
| insertedLibraryBridges.put(bridge, resolvedMethod); |
| return bridge; |
| } |
| |
| private boolean canRebindDirectlyToLibraryMethod( |
| DexClassAndMethod resolvedMethod, |
| SingleResolutionResult<?> resolutionResult, |
| ProgramMethodSet contexts, |
| Type invokeType, |
| DexMethod original) { |
| // TODO(b/194422791): It could potentially be that `original.holder` is not a subtype of |
| // `resolvedMethod.holder` on all API levels, in which case it is not OK to rebind to the |
| // resolved method. |
| return resolvedMethod.isLibraryMethod() |
| && isAccessibleInAllContexts(resolvedMethod, resolutionResult, contexts) |
| && !isInvokeSuperToInterfaceMethod(resolvedMethod, invokeType) |
| && !isInvokeSuperToAbstractMethod(resolvedMethod, invokeType) |
| && isApiSafeForMemberRebinding( |
| resolvedMethod.asLibraryMethod(), original, androidApiLevelCompute, options); |
| } |
| |
| private boolean isAccessibleInAllContexts( |
| DexClassAndMethod resolvedMethod, |
| SingleResolutionResult<?> resolutionResult, |
| ProgramMethodSet contexts) { |
| if (resolvedMethod.getHolder().isPublic() && resolvedMethod.getDefinition().isPublic()) { |
| return true; |
| } |
| return Iterables.all( |
| contexts, |
| context -> resolutionResult.isAccessibleFrom(context, appView.appInfo()).isTrue()); |
| } |
| |
| private boolean isInvokeSuperToInterfaceMethod(DexClassAndMethod method, Type invokeType) { |
| return method.getHolder().isInterface() && invokeType.isSuper(); |
| } |
| |
| private boolean isInvokeSuperToAbstractMethod(DexClassAndMethod method, Type invokeType) { |
| return method.getAccessFlags().isAbstract() && invokeType.isSuper(); |
| } |
| |
| public static DexField validMemberRebindingTargetFor( |
| DexDefinitionSupplier definitions, DexClassAndField field, DexField original) { |
| if (field.isProgramField()) { |
| return field.getReference(); |
| } |
| DexClass fieldHolder = field.getHolder(); |
| DexType newHolder = |
| firstLibraryClassOrFirstInterfaceTarget( |
| fieldHolder, |
| definitions, |
| field.getReference(), |
| original.getHolderType(), |
| DexClass::lookupField); |
| return newHolder != null |
| ? original.withHolder(newHolder, definitions.dexItemFactory()) |
| : original; |
| } |
| |
| private static <T> DexType firstLibraryClassOrFirstInterfaceTarget( |
| DexClass holder, |
| DexDefinitionSupplier definitions, |
| T target, |
| DexType current, |
| BiFunction<DexClass, T, ?> lookup) { |
| return holder.isInterface() |
| ? firstLibraryClassForInterfaceTarget(definitions, target, current, lookup) |
| : firstLibraryClass(definitions, current); |
| } |
| |
| private static <T> DexType firstLibraryClassForInterfaceTarget( |
| DexDefinitionSupplier definitions, |
| T target, |
| DexType current, |
| BiFunction<DexClass, T, ?> lookup) { |
| DexClass clazz = definitions.definitionFor(current); |
| if (clazz == null) { |
| return null; |
| } |
| Object potential = lookup.apply(clazz, target); |
| if (potential != null) { |
| // Found, return type. |
| return current; |
| } |
| if (clazz.superType != null) { |
| DexType matchingSuper = |
| firstLibraryClassForInterfaceTarget(definitions, target, clazz.superType, lookup); |
| if (matchingSuper != null) { |
| // Found in supertype, return first library class. |
| return clazz.isNotProgramClass() ? current : matchingSuper; |
| } |
| } |
| for (DexType iface : clazz.getInterfaces()) { |
| DexType matchingIface = |
| firstLibraryClassForInterfaceTarget(definitions, target, iface, lookup); |
| if (matchingIface != null) { |
| // Found in interface, return first library class. |
| return clazz.isNotProgramClass() ? current : matchingIface; |
| } |
| } |
| return null; |
| } |
| |
| private static DexClass firstProgramClassForTarget( |
| DexDefinitionSupplier definitions, DexMethod target, DexType current) { |
| DexClass clazz = definitions.contextIndependentDefinitionFor(current); |
| if (clazz == null) { |
| return null; |
| } |
| DexEncodedMethod potential = clazz.lookupMethod(target); |
| if (potential != null) { |
| // Found, return type. |
| return clazz; |
| } |
| if (clazz.superType != null) { |
| DexClass matchingSuper = firstProgramClassForTarget(definitions, target, clazz.superType); |
| if (matchingSuper != null) { |
| // Found in supertype, return first program class. |
| return matchingSuper.isNotProgramClass() ? clazz : matchingSuper; |
| } |
| } |
| for (DexType iface : clazz.getInterfaces()) { |
| DexClass matchingIface = firstProgramClassForTarget(definitions, target, iface); |
| if (matchingIface != null) { |
| // Found in interface, return first program class. |
| return matchingIface.isNotProgramClass() ? clazz : matchingIface; |
| } |
| } |
| return null; |
| } |
| |
| private static DexType firstLibraryClass(DexDefinitionSupplier definitions, DexType bottom) { |
| DexClass searchClass = definitions.contextIndependentDefinitionFor(bottom); |
| while (searchClass != null && searchClass.isProgramClass()) { |
| searchClass = |
| definitions.definitionFor(searchClass.getSuperType(), searchClass.asProgramClass()); |
| } |
| return searchClass != null ? searchClass.getType() : null; |
| } |
| |
| private static DexProgramClass firstProgramClass( |
| DexDefinitionSupplier definitions, DexType bottom) { |
| DexProgramClass searchClass = |
| DexProgramClass.asProgramClassOrNull(definitions.contextIndependentDefinitionFor(bottom)); |
| while (searchClass != null && searchClass.isProgramClass()) { |
| DexClass superClass = |
| definitions.definitionFor(searchClass.getSuperType(), searchClass.asProgramClass()); |
| if (superClass.isNotProgramClass()) { |
| return searchClass; |
| } |
| searchClass = superClass.asProgramClass(); |
| } |
| return null; |
| } |
| |
| private MethodResolutionResult resolveMethodOnClass(DexMethod method) { |
| return appView.appInfo().resolveMethodOnClassLegacy(method.holder, method); |
| } |
| |
| private MethodResolutionResult resolveMethodOnInterface(DexMethod method) { |
| return appView.appInfo().resolveMethodOnInterfaceLegacy(method.holder, method); |
| } |
| |
| private MethodResolutionResult resolveMethod(DexMethod method) { |
| return appView.appInfo().unsafeResolveMethodDueToDexFormatLegacy(method); |
| } |
| |
| private void computeMethodRebinding(MethodAccessInfoCollection methodAccessInfoCollection) { |
| // Virtual invokes are on classes, so use class resolution. |
| computeMethodRebinding( |
| methodAccessInfoCollection::forEachVirtualInvoke, this::resolveMethodOnClass, Type.VIRTUAL); |
| // Interface invokes are always on interfaces, so use interface resolution. |
| computeMethodRebinding( |
| methodAccessInfoCollection::forEachInterfaceInvoke, |
| this::resolveMethodOnInterface, |
| Type.INTERFACE); |
| // Super invokes can be on both kinds, decide using the holder class. |
| computeMethodRebinding( |
| methodAccessInfoCollection::forEachSuperInvoke, this::resolveMethod, Type.SUPER); |
| // Likewise static invokes. |
| computeMethodRebinding( |
| methodAccessInfoCollection::forEachStaticInvoke, this::resolveMethod, Type.STATIC); |
| } |
| |
| private void computeMethodRebinding( |
| BiForEachable<DexMethod, ProgramMethodSet> methodsWithContexts, |
| Function<DexMethod, MethodResolutionResult> resolver, |
| Type invokeType) { |
| Map<DexProgramClass, List<Pair<DexMethod, DexClassAndMethod>>> bridges = |
| new IdentityHashMap<>(); |
| TriConsumer<DexProgramClass, DexMethod, DexClassAndMethod> addBridge = |
| (bridgeHolder, method, target) -> |
| bridges |
| .computeIfAbsent(bridgeHolder, k -> new ArrayList<>()) |
| .add(new Pair<>(method, target)); |
| |
| methodsWithContexts.forEach( |
| (method, contexts) -> { |
| MethodResolutionResult resolutionResult = resolver.apply(method); |
| if (!resolutionResult.isSingleResolution()) { |
| return; |
| } |
| |
| if (method.getHolderType().isArrayType()) { |
| assert resolutionResult.getResolvedHolder().getType() |
| == appView.dexItemFactory().objectType; |
| lensBuilder.map( |
| method, resolutionResult.getResolvedMethod().getReference(), invokeType); |
| return; |
| } |
| |
| // TODO(b/128404854) Rebind to the lowest library class or program class. For now we allow |
| // searching in library for methods, but this should be done on classpath instead. |
| DexClassAndMethod resolvedMethod = resolutionResult.getResolutionPair(); |
| if (resolvedMethod.getReference() == method) { |
| return; |
| } |
| |
| DexClass initialResolutionHolder = resolutionResult.getInitialResolutionHolder(); |
| DexMethod bridgeMethod = null; |
| if (initialResolutionHolder.isProgramClass()) { |
| // In Java bytecode, it is only possible to target interface methods that are in one of |
| // the immediate super-interfaces via a super-invocation (see |
| // IndirectSuperInterfaceTest). |
| // To avoid introducing an IncompatibleClassChangeError at runtime we therefore insert a |
| // bridge method when we are about to rebind to an interface method that is not the |
| // original target. |
| if (needsBridgeForInterfaceMethod( |
| initialResolutionHolder, resolvedMethod, invokeType)) { |
| bridgeMethod = |
| insertBridgeForInterfaceMethod( |
| method, resolvedMethod, initialResolutionHolder.asProgramClass(), addBridge); |
| } else { |
| // If the target class is not public but the targeted method is, we might run into |
| // visibility problems when rebinding. |
| if (contexts.stream() |
| .anyMatch(context -> mayNeedBridgeForVisibility(context, resolvedMethod))) { |
| bridgeMethod = |
| insertBridgeForVisibilityIfNeeded( |
| method, resolvedMethod, initialResolutionHolder, addBridge); |
| } |
| } |
| } |
| if (bridgeMethod != null) { |
| lensBuilder.map(method, bridgeMethod, invokeType); |
| } else if (resolvedMethod.isProgramMethod()) { |
| lensBuilder.map(method, resolvedMethod.getReference(), invokeType); |
| } else { |
| lensBuilder.map( |
| method, |
| validMemberRebindingTargetForNonProgramMethod( |
| resolvedMethod, |
| resolutionResult.asSingleResolution(), |
| contexts, |
| invokeType, |
| method), |
| invokeType); |
| } |
| }); |
| |
| bridges.forEach( |
| (bridgeHolder, targets) -> { |
| // Sorting the list of bridges within a class maintains a deterministic order of entries |
| // in the method collection. |
| targets.sort(Comparator.comparing(Pair::getFirst)); |
| for (Pair<DexMethod, DexClassAndMethod> pair : targets) { |
| DexMethod method = pair.getFirst(); |
| DexClassAndMethod target = pair.getSecond(); |
| DexMethod bridgeMethod = |
| method.withHolder(bridgeHolder.getType(), appView.dexItemFactory()); |
| if (bridgeHolder.getMethodCollection().getMethod(bridgeMethod) == null) { |
| DexEncodedMethod targetDefinition = target.getDefinition(); |
| DexEncodedMethod bridgeMethodDefinition = |
| targetDefinition.toForwardingMethod( |
| bridgeHolder, |
| appView, |
| builder -> { |
| if (!targetDefinition.isAbstract() |
| && targetDefinition.getApiLevelForCode().isNotSetApiLevel()) { |
| assert !target.isProgramMethod(); |
| builder.setApiLevelForCode( |
| appView |
| .apiLevelCompute() |
| .computeApiLevelForLibraryReference( |
| targetDefinition.getReference(), |
| appView.computedMinApiLevel())); |
| } |
| builder.setIsLibraryMethodOverrideIf( |
| !target.isProgramMethod() && !targetDefinition.isStatic(), |
| OptionalBool.TRUE); |
| }); |
| bridgeHolder.addMethod(bridgeMethodDefinition); |
| } |
| assert resolver.apply(method).getResolvedMethod().getReference() == bridgeMethod; |
| } |
| }); |
| } |
| |
| private boolean needsBridgeForInterfaceMethod( |
| DexClass originalClass, DexClassAndMethod method, Type invokeType) { |
| return options.isGeneratingClassFiles() |
| && invokeType == Type.SUPER |
| && method.getHolder() != originalClass |
| && method.getHolder().isInterface(); |
| } |
| |
| private DexMethod insertBridgeForInterfaceMethod( |
| DexMethod method, |
| DexClassAndMethod target, |
| DexProgramClass originalClass, |
| TriConsumer<DexProgramClass, DexMethod, DexClassAndMethod> bridges) { |
| // If `targetClass` is a class, then insert the bridge method on the upper-most super class that |
| // implements the interface. Otherwise, if it is an interface, then insert the bridge method |
| // directly on the interface (because that interface must be the immediate super type, assuming |
| // that the super-invocation is not broken in advance). |
| // |
| // Note that, to support compiling from DEX to CF, we would need to rewrite the targets of |
| // invoke-super instructions that hit indirect interface methods such that they always target |
| // a method in an immediate super-interface, since this works on Art but not on the JVM. |
| DexProgramClass bridgeHolder = |
| findHolderForInterfaceMethodBridge(originalClass, target.getHolderType()); |
| assert bridgeHolder != null; |
| assert bridgeHolder != target.getHolder(); |
| bridges.accept(bridgeHolder, method, target); |
| return target.getReference().withHolder(bridgeHolder.getType(), appView.dexItemFactory()); |
| } |
| |
| private DexProgramClass findHolderForInterfaceMethodBridge(DexProgramClass clazz, DexType iface) { |
| if (clazz.accessFlags.isInterface()) { |
| return clazz; |
| } |
| DexClass superClass = appView.definitionFor(clazz.superType); |
| if (superClass == null |
| || superClass.isNotProgramClass() |
| || !appView.appInfo().isSubtype(superClass.type, iface)) { |
| return clazz; |
| } |
| return findHolderForInterfaceMethodBridge(superClass.asProgramClass(), iface); |
| } |
| |
| private boolean mayNeedBridgeForVisibility(ProgramMethod context, DexClassAndMethod method) { |
| DexType holderType = method.getHolderType(); |
| DexClass holder = appView.definitionFor(holderType); |
| if (holder == null) { |
| return false; |
| } |
| ConstraintWithTarget classVisibility = |
| ConstraintWithTarget.deriveConstraint( |
| context, holderType, holder.getAccessFlags(), appView); |
| ConstraintWithTarget methodVisibility = |
| ConstraintWithTarget.deriveConstraint( |
| context, holderType, method.getAccessFlags(), appView); |
| // We may need bridge for visibility if the target class is not visible while the target method |
| // is visible from the calling context. |
| return classVisibility == ConstraintWithTarget.NEVER |
| && methodVisibility != ConstraintWithTarget.NEVER; |
| } |
| |
| private DexMethod insertBridgeForVisibilityIfNeeded( |
| DexMethod method, |
| DexClassAndMethod target, |
| DexClass originalClass, |
| TriConsumer<DexProgramClass, DexMethod, DexClassAndMethod> bridges) { |
| // If the original class is public and this method is public, it might have been called |
| // from anywhere, so we need a bridge. Likewise, if the original is in a different |
| // package, we might need a bridge, too. |
| String packageDescriptor = |
| originalClass.accessFlags.isPublic() ? null : method.holder.getPackageDescriptor(); |
| if (packageDescriptor == null |
| || !packageDescriptor.equals(target.getHolderType().getPackageDescriptor())) { |
| DexProgramClass bridgeHolder = |
| findHolderForVisibilityBridge(originalClass, target.getHolder(), packageDescriptor); |
| assert bridgeHolder != null; |
| bridges.accept(bridgeHolder, method, target); |
| return target.getReference().withHolder(bridgeHolder.getType(), appView.dexItemFactory()); |
| } |
| return target.getReference(); |
| } |
| |
| private DexProgramClass findHolderForVisibilityBridge( |
| DexClass originalClass, DexClass targetClass, String packageDescriptor) { |
| if (originalClass == targetClass || originalClass.isNotProgramClass()) { |
| return null; |
| } |
| DexProgramClass newHolder = null; |
| // Recurse through supertype chain. |
| if (appView.appInfo().isSubtype(originalClass.superType, targetClass.type)) { |
| DexClass superClass = appView.definitionFor(originalClass.superType); |
| newHolder = findHolderForVisibilityBridge(superClass, targetClass, packageDescriptor); |
| } else { |
| for (DexType iface : originalClass.interfaces.values) { |
| if (appView.appInfo().isSubtype(iface, targetClass.type)) { |
| DexClass interfaceClass = appView.definitionFor(iface); |
| newHolder = findHolderForVisibilityBridge(interfaceClass, targetClass, packageDescriptor); |
| } |
| } |
| } |
| if (newHolder != null) { |
| // A supertype fulfills the visibility requirements. |
| return newHolder; |
| } else if (originalClass.accessFlags.isPublic() |
| || originalClass.type.getPackageDescriptor().equals(packageDescriptor)) { |
| // This class is visible. Return it if it is a program class, otherwise null. |
| return originalClass.asProgramClass(); |
| } |
| return null; |
| } |
| |
| private void recordNonReboundFieldAccesses(ExecutorService executorService) |
| throws ExecutionException { |
| assert verifyFieldAccessCollectionContainsAllNonReboundFieldReferences(executorService); |
| FieldAccessInfoCollection<?> fieldAccessInfoCollection = |
| appView.appInfo().getFieldAccessInfoCollection(); |
| fieldAccessInfoCollection.forEach(lensBuilder::recordNonReboundFieldAccesses); |
| } |
| |
| public MemberRebindingLens run(ExecutorService executorService) throws ExecutionException { |
| AppInfoWithLiveness appInfo = appView.appInfo(); |
| computeMethodRebinding(appInfo.getMethodAccessInfoCollection()); |
| recordNonReboundFieldAccesses(executorService); |
| appInfo.getFieldAccessInfoCollection().flattenAccessContexts(); |
| insertLibraryBridges(); |
| return lensBuilder.build(); |
| } |
| |
| private void insertLibraryBridges() { |
| insertedLibraryBridges.forEach( |
| (method, resolvedMethod) -> { |
| assert !resolvedMethod.isProgramMethod(); |
| DexProgramClass holder = |
| DexProgramClass.asProgramClassOrNull(appView.definitionFor(method.getHolderType())); |
| assert holder != null; |
| assert !holder.isInterface() || options.canUseDefaultAndStaticInterfaceMethods(); |
| DexEncodedMethod resolvedDefinition = resolvedMethod.getDefinition(); |
| holder.addMethod( |
| DexEncodedMethod.syntheticBuilder() |
| .setMethod(method) |
| .setApiLevelForDefinition(resolvedDefinition.getApiLevelForDefinition()) |
| // Since we could not member rebind to this definition it is at least higher than |
| // min-api. |
| .setApiLevelForCode(ComputedApiLevel.unknown()) |
| .setCode( |
| MemberRebindingBridgeCode.builder() |
| .setTarget(resolvedMethod.getDefinition().getReference()) |
| .setInterface(resolvedMethod.getHolder().isInterface()) |
| .build()) |
| .setAccessFlags(MethodAccessFlags.builder().setPublic().setSynthetic().build()) |
| .setClassFileVersion(resolvedDefinition.getClassFileVersion()) |
| .setDeprecated(resolvedDefinition.deprecated) |
| .setIsLibraryMethodOverride(OptionalBool.TRUE) |
| .build()); |
| }); |
| } |
| |
| private boolean verifyFieldAccessCollectionContainsAllNonReboundFieldReferences( |
| ExecutorService executorService) throws ExecutionException { |
| Set<DexField> nonReboundFieldReferences = computeNonReboundFieldReferences(executorService); |
| FieldAccessInfoCollection<?> fieldAccessInfoCollection = |
| appView.appInfo().getFieldAccessInfoCollection(); |
| fieldAccessInfoCollection.forEach( |
| info -> { |
| DexField reboundFieldReference = info.getField(); |
| info.forEachIndirectAccess( |
| nonReboundFieldReference -> { |
| assert reboundFieldReference != nonReboundFieldReference; |
| assert reboundFieldReference |
| == appView |
| .appInfo() |
| .resolveField(nonReboundFieldReference) |
| .getResolvedFieldReference(); |
| nonReboundFieldReferences.remove(nonReboundFieldReference); |
| }); |
| }); |
| assert nonReboundFieldReferences.isEmpty(); |
| return true; |
| } |
| |
| private Set<DexField> computeNonReboundFieldReferences(ExecutorService executorService) |
| throws ExecutionException { |
| Set<DexField> nonReboundFieldReferences = Sets.newConcurrentHashSet(); |
| ThreadUtils.processItems( |
| appView.appInfo()::forEachMethod, |
| method -> { |
| if (method.getDefinition().hasCode()) { |
| method.registerCodeReferences( |
| new UseRegistry<ProgramMethod>(appView, method) { |
| |
| @Override |
| public void registerInstanceFieldRead(DexField field) { |
| registerFieldReference(field); |
| } |
| |
| @Override |
| public void registerInstanceFieldWrite(DexField field) { |
| registerFieldReference(field); |
| } |
| |
| @Override |
| public void registerStaticFieldRead(DexField field) { |
| registerFieldReference(field); |
| } |
| |
| @Override |
| public void registerStaticFieldWrite(DexField field) { |
| registerFieldReference(field); |
| } |
| |
| private void registerFieldReference(DexField field) { |
| appView |
| .appInfo() |
| .resolveField(field) |
| .forEachSuccessfulFieldResolutionResult( |
| resolutionResult -> { |
| if (resolutionResult.getResolvedField().getReference() != field) { |
| nonReboundFieldReferences.add(field); |
| } |
| }); |
| } |
| |
| @Override |
| public void registerInitClass(DexType type) { |
| // Intentionally empty. |
| } |
| |
| @Override |
| public void registerInvokeDirect(DexMethod method) { |
| // Intentionally empty. |
| } |
| |
| @Override |
| public void registerInvokeInterface(DexMethod method) { |
| // Intentionally empty. |
| } |
| |
| @Override |
| public void registerInvokeStatic(DexMethod method) { |
| // Intentionally empty. |
| } |
| |
| @Override |
| public void registerInvokeSuper(DexMethod method) { |
| // Intentionally empty. |
| } |
| |
| @Override |
| public void registerInvokeVirtual(DexMethod method) { |
| // Intentionally empty. |
| } |
| |
| @Override |
| public void registerNewInstance(DexType type) { |
| // Intentionally empty. |
| } |
| |
| @Override |
| public void registerInstanceOf(DexType type) { |
| // Intentionally empty. |
| } |
| |
| @Override |
| public void registerTypeReference(DexType type) { |
| // Intentionally empty. |
| } |
| }); |
| } |
| }, |
| executorService); |
| return nonReboundFieldReferences; |
| } |
| } |
