| // Copyright (c) 2019, 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; |
| |
| import com.android.tools.r8.utils.AndroidApiLevel; |
| import com.android.tools.r8.utils.InternalOptions; |
| import com.android.tools.r8.utils.StringDiagnostic; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| // TODO(134732760): This is still work in progress. |
| // The SpecialLibraryConfiguration is a set of flags for experimentation |
| // with the desugared JDK libraries which should be replaced by a D8/R8 |
| // API level flag --coreLibraryDescriptor |
| public class SpecialLibraryConfiguration { |
| |
| private static Map<String, String> buildPrefixRewritingForProgramCompilation() { |
| return ImmutableMap.<String, String>builder() |
| // --rewrite_core_library_prefix. |
| // Following flags are ignored (already desugared). |
| // .put("java.lang.Double8", "j$.lang.Double8") |
| // .put("java.lang.Integer8", "j$.lang.Integer8") |
| // .put("java.lang.Long8", "j$.lang.Long8") |
| // .put("java.lang.Math8", "j$.lang.Math8") |
| .put("java.time.", "j$.time.") |
| .put("java.util.stream.", "j$.util.stream.") |
| .put("java.util.function.", "j$.util.function.") |
| .put("java.util.Desugar", "j$.util.Desugar") |
| .put("java.util.DoubleSummaryStatistics", "j$.util.DoubleSummaryStatistics") |
| .put("java.util.IntSummaryStatistics", "j$.util.IntSummaryStatistics") |
| .put("java.util.LongSummaryStatistics", "j$.util.LongSummaryStatistics") |
| .put("java.util.Objects", "j$.util.Objects") |
| .put("java.util.Optional", "j$.util.Optional") |
| .put("java.util.PrimitiveIterator", "j$.util.PrimitiveIterator") |
| .put("java.util.Spliterator", "j$.util.Spliterator") |
| .put("java.util.StringJoiner", "j$.util.StringJoiner") |
| .put("java.util.concurrent.ConcurrentHashMap", "j$.util.concurrent.ConcurrentHashMap") |
| .put("java.util.concurrent.ThreadLocalRandom", "j$.util.concurrent.ThreadLocalRandom") |
| .put("java.util.concurrent.atomic.DesugarAtomic", "j$.util.concurrent.atomic.DesugarAtomic") |
| .build(); |
| } |
| |
| private static Map<String, String> buildPrefixRewritingForProgramCompilationAndroidNPlus() { |
| // From Android O, emulated interfaces are not supported and are not required. |
| // Prefix rewriting is different to avoid rewriting classes to j$ while they should not, |
| // else Android cannot find the library methods because they use the incorrect types. |
| return ImmutableMap.<String, String>builder() |
| .put("java.time.", "j$.time.") |
| .put("java.util.Desugar", "j$.util.Desugar") |
| .build(); |
| } |
| |
| private static Map<String, String> buildPrefixRewritingForCoreLibCompilation() { |
| return ImmutableMap.<String, String>builder() |
| // --rewrite_core_library_prefix. |
| // Extra flags for R8 |
| .put("java.io.DesugarBufferedReader", "j$.io.DesugarBufferedReader") |
| .put("java.io.UncheckedIOException", "j$.io.UncheckedIOException") |
| // Bazel flags. |
| .put("java.lang.Double8", "j$.lang.Double8") |
| .put("java.lang.Integer8", "j$.lang.Integer8") |
| .put("java.lang.Long8", "j$.lang.Long8") |
| .put("java.lang.Math8", "j$.lang.Math8") |
| .put("java.time.", "j$.time.") |
| .put("java.util.stream.", "j$.util.stream.") |
| .put("java.util.function.", "j$.util.function.") |
| .put("java.util.Comparators", "j$.util.Comparators") |
| .put("java.util.Desugar", "j$.util.Desugar") |
| .put("java.util.DoubleSummaryStatistics", "j$.util.DoubleSummaryStatistics") |
| .put("java.util.IntSummaryStatistics", "j$.util.IntSummaryStatistics") |
| .put("java.util.LongSummaryStatistics", "j$.util.LongSummaryStatistics") |
| .put("java.util.Objects", "j$.util.Objects") |
| .put("java.util.Optional", "j$.util.Optional") |
| .put("java.util.PrimitiveIterator", "j$.util.PrimitiveIterator") |
| .put("java.util.SortedSet$1", "j$.util.SortedSet$1") |
| .put("java.util.Spliterator", "j$.util.Spliterator") |
| .put("java.util.StringJoiner", "j$.util.StringJoiner") |
| .put("java.util.Tripwire", "j$.util.Tripwire") |
| .put("java.util.concurrent.ConcurrentHashMap", "j$.util.concurrent.ConcurrentHashMap") |
| .put("java.util.concurrent.DesugarUnsafe", "j$.util.concurrent.DesugarUnsafe") |
| .put("java.util.concurrent.ThreadLocalRandom", "j$.util.concurrent.ThreadLocalRandom") |
| .put("java.util.concurrent.atomic.DesugarAtomic", "j$.util.concurrent.atomic.DesugarAtomic") |
| .build(); |
| } |
| |
| private static Map<String, String> |
| buildRetargetCoreLibraryMemberForProgramCompilationAndroidNPlus() { |
| // --retarget_core_library_member. |
| return ImmutableMap.<String, String>builder() |
| .put("java.util.Calendar#toInstant", "java.util.DesugarCalendar") |
| .put("java.util.Date#from", "java.util.DesugarDate") |
| .put("java.util.Date#toInstant", "java.util.DesugarDate") |
| .put("java.util.GregorianCalendar#from", "java.util.DesugarGregorianCalendar") |
| .put("java.util.GregorianCalendar#toZonedDateTime", "java.util.DesugarGregorianCalendar") |
| .build(); |
| } |
| |
| private static Map<String, String> buildRetargetCoreLibraryMemberForProgramCompilation() { |
| // --retarget_core_library_member. |
| return ImmutableMap.<String, String>builder() |
| // We ignore the following flags required by Bazel because desugaring of these methods |
| // is done separately. |
| // .put("java.lang.Double#max", "java.lang.Double8") |
| // .put("java.lang.Double#min", "java.lang.Double8") |
| // .put("java.lang.Double#sum", "java.lang.Double8") |
| // .put("java.lang.Integer#max", "java.lang.Integer8") |
| // .put("java.lang.Integer#min", "java.lang.Integer8") |
| // .put("java.lang.Integer#sum", "java.lang.Integer8") |
| // .put("java.lang.Long#max", "java.lang.Long") |
| // .put("java.lang.Long#min", "java.lang.Long") |
| // .put("java.lang.Long#sum", "java.lang.Long") |
| // .put("java.lang.Math#toIntExact", "java.lang.Math8") |
| .put("java.util.Arrays#stream", "java.util.DesugarArrays") |
| .put("java.util.Arrays#spliterator", "java.util.DesugarArrays") |
| .put("java.util.Calendar#toInstant", "java.util.DesugarCalendar") |
| .put("java.util.Date#from", "java.util.DesugarDate") |
| .put("java.util.Date#toInstant", "java.util.DesugarDate") |
| .put("java.util.GregorianCalendar#from", "java.util.DesugarGregorianCalendar") |
| .put("java.util.GregorianCalendar#toZonedDateTime", "java.util.DesugarGregorianCalendar") |
| .put("java.util.LinkedHashSet#spliterator", "java.util.DesugarLinkedHashSet") |
| .put( |
| "java.util.concurrent.atomic.AtomicInteger#getAndUpdate", |
| "java.util.concurrent.atomic.DesugarAtomicInteger") |
| .put( |
| "java.util.concurrent.atomic.AtomicInteger#updateAndGet", |
| "java.util.concurrent.atomic.DesugarAtomicInteger") |
| .put( |
| "java.util.concurrent.atomic.AtomicInteger#getAndAccumulate", |
| "java.util.concurrent.atomic.DesugarAtomicInteger") |
| .put( |
| "java.util.concurrent.atomic.AtomicInteger#accumulateAndGet", |
| "java.util.concurrent.atomic.DesugarAtomicInteger") |
| .put( |
| "java.util.concurrent.atomic.AtomicLong#getAndUpdate", |
| "java.util.concurrent.atomic.DesugarAtomicLong") |
| .put( |
| "java.util.concurrent.atomic.AtomicLong#updateAndGet", |
| "java.util.concurrent.atomic.DesugarAtomicLong") |
| .put( |
| "java.util.concurrent.atomic.AtomicLong#getAndAccumulate", |
| "java.util.concurrent.atomic.DesugarAtomicLong") |
| .put( |
| "java.util.concurrent.atomic.AtomicLong#accumulateAndGet", |
| "java.util.concurrent.atomic.DesugarAtomicLong") |
| .put( |
| "java.util.concurrent.atomic.AtomicReference#getAndUpdate", |
| "java.util.concurrent.atomic.DesugarAtomicReference") |
| .put( |
| "java.util.concurrent.atomic.AtomicReference#updateAndGet", |
| "java.util.concurrent.atomic.DesugarAtomicReference") |
| .put( |
| "java.util.concurrent.atomic.AtomicReference#getAndAccumulate", |
| "java.util.concurrent.atomic.DesugarAtomicReference") |
| .put( |
| "java.util.concurrent.atomic.AtomicReference#accumulateAndGet", |
| "java.util.concurrent.atomic.DesugarAtomicReference") |
| .build(); |
| } |
| |
| private static Map<String, String> buildRetargetCoreLibraryMemberForCoreLibCompilation() { |
| /* |
| --retarget_core_library_member. |
| |
| The bazel configuration only have this single --retarget_core_library_member option: |
| |
| --retarget_core_library_member \ |
| "java/util/LinkedHashSet#spliterator->java/util/DesugarLinkedHashSet" |
| |
| The configuration below is the full configuration for programs using the desugared library. |
| This should fine, as any calls to these re-targeted methods should be rewritten. The main |
| reason for adding all of them is that the additional files added to the desugared library |
| for running some of the JDK 11 tests use these APIs. |
| */ |
| return ImmutableMap.<String, String>builder() |
| // We ignore the following flags required by Bazel because desugaring of these methods |
| // is done separately. |
| // .put("java.lang.Double#max", "java.lang.Double8") |
| // .put("java.lang.Double#min", "java.lang.Double8") |
| // .put("java.lang.Double#sum", "java.lang.Double8") |
| // .put("java.lang.Integer#max", "java.lang.Integer8") |
| // .put("java.lang.Integer#min", "java.lang.Integer8") |
| // .put("java.lang.Integer#sum", "java.lang.Integer8") |
| // .put("java.lang.Long#max", "java.lang.Long") |
| // .put("java.lang.Long#min", "java.lang.Long") |
| // .put("java.lang.Long#sum", "java.lang.Long") |
| // .put("java.lang.Math#toIntExact", "java.lang.Math8") |
| .put("java.util.Arrays#stream", "java.util.DesugarArrays") |
| .put("java.util.Arrays#spliterator", "java.util.DesugarArrays") |
| .put("java.util.Calendar#toInstant", "java.util.DesugarCalendar") |
| .put("java.util.Date#from", "java.util.DesugarDate") |
| .put("java.util.Date#toInstant", "java.util.DesugarDate") |
| .put("java.util.GregorianCalendar#from", "java.util.DesugarGregorianCalendar") |
| .put("java.util.GregorianCalendar#toZonedDateTime", "java.util.DesugarGregorianCalendar") |
| .put("java.util.LinkedHashSet#spliterator", "java.util.DesugarLinkedHashSet") |
| .put( |
| "java.util.concurrent.atomic.AtomicInteger#getAndUpdate", |
| "java.util.concurrent.atomic.DesugarAtomicInteger") |
| .put( |
| "java.util.concurrent.atomic.AtomicInteger#updateAndGet", |
| "java.util.concurrent.atomic.DesugarAtomicInteger") |
| .put( |
| "java.util.concurrent.atomic.AtomicInteger#getAndAccumulate", |
| "java.util.concurrent.atomic.DesugarAtomicInteger") |
| .put( |
| "java.util.concurrent.atomic.AtomicInteger#accumulateAndGet", |
| "java.util.concurrent.atomic.DesugarAtomicInteger") |
| .put( |
| "java.util.concurrent.atomic.AtomicLong#getAndUpdate", |
| "java.util.concurrent.atomic.DesugarAtomicLong") |
| .put( |
| "java.util.concurrent.atomic.AtomicLong#updateAndGet", |
| "java.util.concurrent.atomic.DesugarAtomicLong") |
| .put( |
| "java.util.concurrent.atomic.AtomicLong#getAndAccumulate", |
| "java.util.concurrent.atomic.DesugarAtomicLong") |
| .put( |
| "java.util.concurrent.atomic.AtomicLong#accumulateAndGet", |
| "java.util.concurrent.atomic.DesugarAtomicLong") |
| .put( |
| "java.util.concurrent.atomic.AtomicReference#getAndUpdate", |
| "java.util.concurrent.atomic.DesugarAtomicReference") |
| .put( |
| "java.util.concurrent.atomic.AtomicReference#updateAndGet", |
| "java.util.concurrent.atomic.DesugarAtomicReference") |
| .put( |
| "java.util.concurrent.atomic.AtomicReference#getAndAccumulate", |
| "java.util.concurrent.atomic.DesugarAtomicReference") |
| .put( |
| "java.util.concurrent.atomic.AtomicReference#accumulateAndGet", |
| "java.util.concurrent.atomic.DesugarAtomicReference") |
| .build(); |
| } |
| |
| private static List<String> buildDontRewriteInvocations() { |
| // --dont_rewrite_core_library_invocation "java/util/Iterator#remove". |
| return ImmutableList.of("java.util.Iterator#remove"); |
| } |
| |
| private static Map<String, String> buildEmulateLibraryInterface() { |
| return ImmutableMap.<String, String>builder() |
| // --emulate_core_library_interface. |
| // Bazel flags. |
| .put("java.util.Map$Entry", "j$.util.Map$Entry") |
| .put("java.util.Collection", "j$.util.Collection") |
| .put("java.util.Map", "j$.util.Map") |
| .put("java.util.Iterator", "j$.util.Iterator") |
| .put("java.util.Comparator", "j$.util.Comparator") |
| // Extra flags: in R8 we marked as emulated all interfaces |
| // with default methods. Emulated interfaces have their |
| // companion class moved to j$ and have a dispatch class. |
| // Bazel instead analyzes the class hierarchy. |
| .put("java.util.List", "j$.util.List") |
| .put("java.util.SortedSet", "j$.util.SortedSet") |
| .put("java.util.Set", "j$.util.Set") |
| .put("java.util.concurrent.ConcurrentMap", "j$.util.concurrent.ConcurrentMap") |
| .build(); |
| } |
| |
| private static Map<String, String> buildBackportCoreLibraryMembers() { |
| // R8 specific to deal with *8 removal. |
| return ImmutableMap.<String, String>builder() |
| .put("java.lang.Double8", "java.lang.Double") |
| .put("java.lang.Integer8", "java.lang.Integer") |
| .put("java.lang.Long8", "java.lang.Long") |
| .build(); |
| } |
| |
| public static void configureLibraryDesugaringForProgramCompilation(InternalOptions options) { |
| // TODO(b/134732760): Make assertions in D8/R8 commands. |
| if (options.minApiLevel >= AndroidApiLevel.P.getLevel()) { |
| options.reporter.warning( |
| new StringDiagnostic( |
| "Desugaring core libraries for Android P and over is possible but not required.")); |
| } |
| options.coreLibraryCompilation = false; |
| if (options.minApiLevel < AndroidApiLevel.N.getLevel()) { |
| options.rewritePrefix = buildPrefixRewritingForProgramCompilation(); |
| options.retargetCoreLibMember = buildRetargetCoreLibraryMemberForProgramCompilation(); |
| options.emulateLibraryInterface = buildEmulateLibraryInterface(); |
| options.dontRewriteInvocations = buildDontRewriteInvocations(); |
| } else { |
| options.rewritePrefix = buildPrefixRewritingForProgramCompilationAndroidNPlus(); |
| options.retargetCoreLibMember = |
| buildRetargetCoreLibraryMemberForProgramCompilationAndroidNPlus(); |
| } |
| } |
| |
| public static void configureLibraryDesugaringForLibraryCompilation(InternalOptions options) { |
| // TODO(b/134732760): Make assertions in L8 commands. |
| if (options.minApiLevel >= AndroidApiLevel.P.getLevel()) { |
| options.reporter.warning( |
| new StringDiagnostic( |
| "Desugaring core libraries for Android P and over is possible but not required.")); |
| } |
| options.coreLibraryCompilation = true; |
| options.backportCoreLibraryMembers = buildBackportCoreLibraryMembers(); |
| options.retargetCoreLibMember = buildRetargetCoreLibraryMemberForCoreLibCompilation(); |
| options.rewritePrefix = buildPrefixRewritingForCoreLibCompilation(); |
| // The following is ignored starting from Android O. |
| options.dontRewriteInvocations = buildDontRewriteInvocations(); |
| options.emulateLibraryInterface = buildEmulateLibraryInterface(); |
| } |
| } |
