| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * 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.android.tools.lint.checks |
| |
| import com.android.sdklib.AndroidVersion |
| import com.android.tools.lint.detector.api.JavaContext |
| |
| /** |
| * Utilities for handling library desugaring. This refers to a feature |
| * implemented in Bazel to rewrite various library calls, such as |
| * references to java.util.function, into calls to a backport library |
| * which can run on older API levels. |
| * |
| * When projects are building with this support enabled, they don't want |
| * the API detector to flag API calls for calls that are handled by |
| * the library rewriter. This file contains calls which looks up whether |
| * a given class/member reference is referencing an API that is rewritten. |
| */ |
| fun isApiDesugared(context: JavaContext, cls: String, name: String?): Boolean { |
| // The specific set of APIs that are handled are described here: |
| // https://github.com/bazelbuild/bazel/blob/master/tools/android/desugar.sh |
| // The code below is based on the that file as of this revision: |
| // https://github.com/bazelbuild/bazel/commit/2e677fb6b8f309b63558eb13294630a91ee0cd33 |
| // See also cs/desugar_java8_libs.sh, which adds: |
| // --rewrite_core_library_prefix java/util/concurrent/ConcurrentHashMap |
| // --rewrite_core_library_prefix java/util/concurrent/ThreadLocalRandom |
| |
| if (cls.startsWith("java.lang.")) { |
| // --retarget_core_library_member "java/lang/Double#max->java/lang/Double8" |
| // --retarget_core_library_member "java/lang/Double#min->java/lang/Double8" |
| // --retarget_core_library_member "java/lang/Double#sum->java/lang/Double8" |
| // --retarget_core_library_member "java/lang/Integer#max->java/lang/Integer8" |
| // --retarget_core_library_member "java/lang/Integer#min->java/lang/Integer8" |
| // --retarget_core_library_member "java/lang/Integer#sum->java/lang/Integer8" |
| // --retarget_core_library_member "java/lang/Long#max->java/lang/Long8" |
| // --retarget_core_library_member "java/lang/Long#min->java/lang/Long8" |
| // --retarget_core_library_member "java/lang/Long#sum->java/lang/Long8" |
| return when (cls) { |
| "java.lang.Integer" -> name == "sum" || name == "min" || name == "max" |
| "java.lang.Long" -> name == "sum" || name == "min" || name == "max" |
| "java.lang.Double" -> name == "sum" || name == "min" || name == "max" |
| "java.lang.Math" -> name == "toIntExact" |
| |
| // See b/118489828 |
| "java.lang.annotation.Repeatable", |
| "java.lang.annotation.ElementType" -> true |
| else -> false |
| } |
| } |
| |
| if (cls.startsWith("java.util.")) { |
| when (cls) { |
| "java.util.Collection" -> { |
| // All but parallelStream allowed, and parallel requires L |
| if (name == "parallelStream") { |
| return context.mainProject.minSdk >= AndroidVersion.VersionCodes.LOLLIPOP |
| } |
| return true |
| } |
| "java.util.stream.BaseStream" -> { |
| // All but parallel allowed, and it requires L |
| if (name == "parallel") { |
| return context.mainProject.minSdk >= AndroidVersion.VersionCodes.LOLLIPOP |
| } |
| return true |
| } |
| "java.util.Arrays" -> { |
| // --retarget_core_library_member "java/util/Arrays#stream->java/util/DesugarArrays" |
| // --retarget_core_library_member "java/util/Arrays#spliterator->java/util/DesugarArrays" |
| return name == "stream" || name == "spliterator" |
| } |
| "java.util.Calendar" -> { |
| // --retarget_core_library_member "java/util/Calendar#toInstant->java/util/DesugarCalendar" |
| return name == "toInstant" |
| } |
| "java.util.Date" -> { |
| // --retarget_core_library_member "java/util/Date#from->java/util/DesugarDate" |
| // --retarget_core_library_member "java/util/Date#toInstant->java/util/DesugarDate" |
| return name == "from" || name == "toInstant" |
| } |
| "java.util.GregorianCalendar" -> { |
| // --retarget_core_library_member "java/util/GregorianCalendar#from->java/util/DesugarGregorianCalendar" |
| // --retarget_core_library_member "java/util/GregorianCalendar#toZonedDateTime->java/util/DesugarGregorianCalendar" |
| return name == "from" || name == "toZonedDateTime" |
| } |
| "java.util.LinkedHashSet" -> { |
| // --retarget_core_library_member "java/util/LinkedHashSet#spliterator->java/util/DesugarLinkedHashSet" |
| return name == "spliterator" |
| } |
| "java.util.concurrent.atomic.AtomicInteger", |
| "java.util.concurrent.atomic.AtomicLong", |
| "java.util.concurrent.atomic.AtomicReference" -> { |
| // --retarget_core_library_member "java/util/concurrent/atomic/AtomicInteger#getAndUpdate->java/util/concurrent/atomic/DesugarAtomicInteger" |
| // --retarget_core_library_member "java/util/concurrent/atomic/AtomicInteger#updateAndGet->java/util/concurrent/atomic/DesugarAtomicInteger" |
| // --retarget_core_library_member "java/util/concurrent/atomic/AtomicInteger#getAndAccumulate->java/util/concurrent/atomic/DesugarAtomicInteger" |
| // --retarget_core_library_member "java/util/concurrent/atomic/AtomicInteger#accumulateAndGet->java/util/concurrent/atomic/DesugarAtomicInteger" |
| // --retarget_core_library_member "java/util/concurrent/atomic/AtomicLong#getAndUpdate->java/util/concurrent/atomic/DesugarAtomicLong" |
| // --retarget_core_library_member "java/util/concurrent/atomic/AtomicLong#updateAndGet->java/util/concurrent/atomic/DesugarAtomicLong" |
| // --retarget_core_library_member "java/util/concurrent/atomic/AtomicLong#getAndAccumulate->java/util/concurrent/atomic/DesugarAtomicLong" |
| // --retarget_core_library_member "java/util/concurrent/atomic/AtomicLong#accumulateAndGet->java/util/concurrent/atomic/DesugarAtomicLong" |
| // --retarget_core_library_member "java/util/concurrent/atomic/AtomicReference#getAndUpdate->java/util/concurrent/atomic/DesugarAtomicReference" |
| // --retarget_core_library_member "java/util/concurrent/atomic/AtomicReference#updateAndGet->java/util/concurrent/atomic/DesugarAtomicReference" |
| // --retarget_core_library_member "java/util/concurrent/atomic/AtomicReference#getAndAccumulate->java/util/concurrent/atomic/DesugarAtomicReference" |
| // --retarget_core_library_member "java/util/concurrent/atomic/AtomicReference#accumulateAndGet->java/util/concurrent/atomic/DesugarAtomicReference" |
| return name == null || name == "getAndUpdate" || |
| name == "updateAndGet" || name == "getAndAccumulate" || |
| name == "accumulateAndGet" |
| } |
| |
| // --rewrite_core_library_prefix java/util/DoubleSummaryStatistics |
| // --rewrite_core_library_prefix java/util/IntSummaryStatistics |
| // --rewrite_core_library_prefix java/util/LongSummaryStatistics |
| // --rewrite_core_library_prefix java/util/Objects |
| // --rewrite_core_library_prefix java/util/Optional |
| // --rewrite_core_library_prefix java/util/PrimitiveIterator |
| // --rewrite_core_library_prefix java/util/Spliterator |
| // --rewrite_core_library_prefix java/util/StringJoiner |
| "java.util.DoubleSummaryStatistics", |
| "java.util.IntSummaryStatistics", |
| "java.util.LongSummaryStatistics", |
| "java.util.Objects", |
| "java.util.Optional", |
| "java.util.OptionalDouble", // matches java.util.Optional* which is a prefix |
| "java.util.OptionalInt", |
| "java.util.OptionalLong", |
| "java.util.PrimitiveIterator", |
| "java.util.Spliterator", |
| "java.util.StringJoiner", |
| |
| // --emulate_core_library_interface java/util/Collection |
| // --emulate_core_library_interface java/util/Map |
| // --emulate_core_library_interface java/util/Map\$Entry |
| // --emulate_core_library_interface java/util/Iterator |
| // --emulate_core_library_interface java/util/Comparator |
| // (java.util.Collection already handled above) |
| "java.util.Map", |
| "java.util.Map.Entry", |
| "java.util.Iterator", |
| "java.util.Comparator", |
| |
| // These are added for Blaze: |
| // --rewrite_core_library_prefix java/util/concurrent/ConcurrentHashMap |
| // --rewrite_core_library_prefix java/util/concurrent/ThreadLocalRandom |
| "java.util.concurrent.ConcurrentHashMap", |
| "java.util.concurrent.ThreadLocalRandom" -> return true |
| |
| else -> { |
| // --rewrite_core_library_prefix java/util/stream/ |
| // --rewrite_core_library_prefix java/util/function/ |
| if (cls.startsWith("java.util.stream") || |
| cls.startsWith("java.util.function") |
| ) { |
| return true |
| } |
| |
| return false |
| } |
| } |
| } |
| |
| // --rewrite_core_library_prefix java/time/ |
| if (cls.startsWith("java.time.")) { |
| return true |
| } |
| |
| return false |
| } |
