| /* |
| * Copyright 2019 The Bazel Authors. All rights reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.google.devtools.build.android.desugar.langmodel; |
| |
| import static com.google.common.collect.ImmutableList.toImmutableList; |
| import static com.google.common.collect.ImmutableMap.toImmutableMap; |
| |
| import com.google.auto.value.AutoValue; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableMap; |
| import com.google.common.collect.Maps; |
| import com.google.devtools.build.android.desugar.langmodel.ClassMemberTrackReason.ClassMemberTrackReasonBuilder; |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| import java.util.function.Predicate; |
| |
| /** |
| * A record that tracks the declarations and usages of a class member, including fields, |
| * constructors and methods. |
| */ |
| @AutoValue |
| public abstract class ClassMemberRecord implements TypeMappable<ClassMemberRecord> { |
| |
| /** Tracks a class member with a reason. */ |
| abstract ImmutableMap<ClassMemberKey<?>, ClassMemberTrackReason> reasons(); |
| |
| /** Creates a builder instance for this class. */ |
| public static ClassMemberRecordBuilder builder() { |
| return new AutoValue_ClassMemberRecord.Builder(); |
| } |
| |
| /** Gets class members with both tracked declarations and tracked usage. */ |
| public final ClassMemberRecord filterUsedMemberWithTrackedDeclaration() { |
| return builder() |
| .setReasons( |
| reasons().entrySet().stream() |
| .filter( |
| entry -> { |
| ClassMemberTrackReason reason = entry.getValue(); |
| // keep interface members and class members with use references. |
| return reason.hasInterfaceDeclReason() |
| || (reason.hasDeclReason() && reason.hasMemberUseReason()); |
| }) |
| .collect(toImmutableMap(Map.Entry::getKey, Map.Entry::getValue))) |
| .autoInternalBuild(); |
| } |
| |
| /** Find all member keys that represent a constructor. */ |
| public final ImmutableList<ClassMemberKey<?>> findAllConstructorMemberKeys() { |
| return findAllMatchedMemberKeys(ClassMemberKey::isConstructor); |
| } |
| |
| /** Find all member keys based on the given member key predicate. */ |
| private ImmutableList<ClassMemberKey<?>> findAllMatchedMemberKeys( |
| Predicate<ClassMemberKey<?>> predicate) { |
| return reasons().keySet().stream().filter(predicate).collect(toImmutableList()); |
| } |
| |
| public final boolean hasTrackingReason(ClassMemberKey<?> classMemberKey) { |
| return reasons().containsKey(classMemberKey); |
| } |
| |
| final boolean hasDeclReason(ClassMemberKey<?> classMemberKey) { |
| return hasTrackingReason(classMemberKey) && reasons().get(classMemberKey).hasDeclReason(); |
| } |
| |
| /** Find the original access code for the owner of the class member. */ |
| final int findOwnerAccessCode(ClassMemberKey<?> memberKey) { |
| if (reasons().containsKey(memberKey)) { |
| return reasons().get(memberKey).ownerAccess(); |
| } |
| throw new IllegalStateException(String.format("ClassMemberKey Not Found: %s", memberKey)); |
| } |
| |
| /** Find the original access code for the class member declaration. */ |
| final int findMemberAccessCode(ClassMemberKey<?> memberKey) { |
| if (reasons().containsKey(memberKey)) { |
| return reasons().get(memberKey).memberAccess(); |
| } |
| throw new IllegalStateException(String.format("ClassMemberKey Not Found: %s", memberKey)); |
| } |
| |
| /** Find all invocation codes of a class member. */ |
| public final ImmutableList<MemberUseKind> findAllMemberUseKind(ClassMemberKey<?> memberKey) { |
| return reasons().containsKey(memberKey) |
| ? reasons().get(memberKey).useAccesses().asList() |
| : ImmutableList.of(); |
| } |
| |
| @Override |
| public ClassMemberRecord acceptTypeMapper(TypeMapper typeMapper) { |
| return builder().setReasons(typeMapper.mapKey(reasons())).autoInternalBuild(); |
| } |
| |
| /** The builder for {@link ClassMemberRecord}. */ |
| @AutoValue.Builder |
| public abstract static class ClassMemberRecordBuilder { |
| |
| private final Map<ClassMemberKey<?>, ClassMemberTrackReasonBuilder> reasonsCollector = |
| new LinkedHashMap<>(); |
| |
| abstract ClassMemberRecordBuilder setReasons( |
| Map<ClassMemberKey<?>, ClassMemberTrackReason> value); |
| |
| /** Logs the declaration of a class member. */ |
| public final ClassMemberTrackReasonBuilder logMemberDecl( |
| ClassMemberKey<?> memberKey, int ownerAccess, int memberDeclAccess) { |
| return getTrackReason(memberKey).setDeclAccess(ownerAccess, memberDeclAccess); |
| } |
| |
| /** Logs the use of a class member, including field access and method invocations. */ |
| public final ClassMemberTrackReasonBuilder logMemberUse( |
| ClassMemberKey<?> memberKey, int invokeOpcode) { |
| return getTrackReason(memberKey).addUseAccess(invokeOpcode); |
| } |
| |
| /** Merges an another member record into this record builder. */ |
| public final ClassMemberRecordBuilder mergeFrom(ClassMemberRecord otherClassMemberRecord) { |
| otherClassMemberRecord |
| .reasons() |
| .forEach( |
| (otherMemberKey, otherMemberTrackReason) -> |
| getTrackReason(otherMemberKey).mergeFrom(otherMemberTrackReason)); |
| return this; |
| } |
| |
| private ClassMemberTrackReasonBuilder getTrackReason(ClassMemberKey<?> memberKey) { |
| return reasonsCollector.computeIfAbsent( |
| memberKey, classMemberKey -> ClassMemberTrackReason.builder()); |
| } |
| |
| public final ClassMemberRecord build() { |
| return setReasons( |
| Maps.transformValues(reasonsCollector, ClassMemberTrackReasonBuilder::build)) |
| .autoInternalBuild(); |
| } |
| |
| abstract ClassMemberRecord autoInternalBuild(); |
| } |
| } |