| // Copyright (c) 2018, 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.origin.Origin; |
| import com.android.tools.r8.utils.AndroidApiLevel; |
| import com.android.tools.r8.utils.FlagFile; |
| import com.android.tools.r8.utils.StringDiagnostic; |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.collect.Iterables; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| public class R8CommandParser extends BaseCompilerCommandParser<R8Command, R8Command.Builder> { |
| |
| private static final Set<String> OPTIONS_WITH_PARAMETER = |
| ImmutableSet.of( |
| "--output", |
| "--lib", |
| "--classpath", |
| MIN_API_FLAG, |
| "--main-dex-rules", |
| "--main-dex-list", |
| "--feature", |
| "--main-dex-list-output", |
| "--pg-conf", |
| "--pg-map-output", |
| "--desugared-lib", |
| "--desugared-lib-pg-conf-output", |
| THREAD_COUNT_FLAG); |
| |
| private static final Set<String> OPTIONS_WITH_TWO_PARAMETERS = ImmutableSet.of("--feature"); |
| |
| public static void main(String[] args) throws CompilationFailedException { |
| R8Command command = parse(args, Origin.root()).build(); |
| if (command.isPrintHelp()) { |
| System.out.println(USAGE_MESSAGE); |
| } else { |
| R8.run(command); |
| } |
| } |
| |
| // Internal state to verify parsing properties not enforced by the builder. |
| private static class ParseState { |
| CompilationMode mode = null; |
| OutputMode outputMode = null; |
| Path outputPath = null; |
| boolean hasDefinedApiLevel = false; |
| private boolean includeDataResources = true; |
| } |
| |
| static final String USAGE_MESSAGE = |
| String.join( |
| "\n", |
| Iterables.concat( |
| Arrays.asList( |
| "Usage: r8 [options] [@<argfile>] <input-files>", |
| " where <input-files> are any combination of dex, class, zip, jar, or apk files", |
| " and each <argfile> is a file containing additional arguments (one per line)", |
| " and options are:", |
| " --release # Compile without debugging information (default).", |
| " --debug # Compile with debugging information.", |
| " --dex # Compile program to DEX file format (default).", |
| " --classfile # Compile program to Java classfile format.", |
| " --output <file> # Output result in <file>.", |
| " # <file> must be an existing directory or a zip file.", |
| " --lib <file|jdk-home> # Add <file|jdk-home> as a library resource.", |
| " --classpath <file> # Add <file> as a classpath resource.", |
| " " |
| + MIN_API_FLAG |
| + " <number> " |
| + "# Minimum Android API level compatibility, default: " |
| + AndroidApiLevel.getDefault().getLevel() |
| + ".", |
| " --pg-conf <file> # Proguard configuration <file>.", |
| " --pg-map-output <file> # Output the resulting name and line mapping to" |
| + " <file>.", |
| " --desugared-lib <file> # Specify desugared library configuration.", |
| " # <file> is a desugared library configuration (json).", |
| " --desugared-lib-pg-conf-output <file> # Output the Proguard configuration ", |
| " # needed by L8 to <file>.", |
| " --no-tree-shaking # Force disable tree shaking of unreachable classes.", |
| " --no-minification # Force disable minification of names.", |
| " --no-data-resources # Ignore all data resources.", |
| " --no-desugaring # Force disable desugaring.", |
| " --main-dex-rules <file> # Proguard keep rules for classes to place in the", |
| " # primary dex file.", |
| " --main-dex-list <file> # List of classes to place in the primary dex file.", |
| " --feature <input> <output> ", |
| " # Add feature <input> file to <output> file. Several ", |
| " # occurrences can map to the same output.", |
| " --main-dex-list-output <file> ", |
| " # Output the full main-dex list in <file>."), |
| ASSERTIONS_USAGE_MESSAGE, |
| THREAD_COUNT_USAGE_MESSAGE, |
| MAP_DIAGNOSTICS_USAGE_MESSAGE, |
| Arrays.asList( |
| " --version # Print the version of r8.", |
| " --help # Print this message."))); |
| /** |
| * Parse the R8 command-line. |
| * |
| * <p>Parsing will set the supplied options or their default value if they have any. |
| * |
| * @param args Command-line arguments array. |
| * @param origin Origin description of the command-line arguments. |
| * @return R8 command builder with state set up according to parsed command line. |
| */ |
| public static R8Command.Builder parse(String[] args, Origin origin) { |
| return new R8CommandParser().parse(args, origin, R8Command.builder()); |
| } |
| |
| /** |
| * Parse the R8 command-line. |
| * |
| * <p>Parsing will set the supplied options or their default value if they have any. |
| * |
| * @param args Command-line arguments array. |
| * @param origin Origin description of the command-line arguments. |
| * @param handler Custom defined diagnostics handler. |
| * @return R8 command builder with state set up according to parsed command line. |
| */ |
| public static R8Command.Builder parse(String[] args, Origin origin, DiagnosticsHandler handler) { |
| return new R8CommandParser().parse(args, origin, R8Command.builder(handler)); |
| } |
| |
| private R8Command.Builder parse(String[] args, Origin origin, R8Command.Builder builder) { |
| ParseState state = new ParseState(); |
| parse(args, origin, builder, state); |
| if (state.mode != null) { |
| builder.setMode(state.mode); |
| } |
| Path outputPath = state.outputPath != null ? state.outputPath : Paths.get("."); |
| OutputMode outputMode = state.outputMode != null ? state.outputMode : OutputMode.DexIndexed; |
| builder.setOutput(outputPath, outputMode, state.includeDataResources); |
| return builder; |
| } |
| |
| private void parse( |
| String[] args, Origin argsOrigin, R8Command.Builder builder, ParseState state) { |
| String[] expandedArgs = FlagFile.expandFlagFiles(args, builder::error); |
| Map<Path, List<Path>> featureSplitJars = new HashMap<>(); |
| for (int i = 0; i < expandedArgs.length; i++) { |
| String arg = expandedArgs[i].trim(); |
| String nextArg = null; |
| String nextNextArg = null; |
| if (OPTIONS_WITH_PARAMETER.contains(arg)) { |
| if (++i < expandedArgs.length) { |
| nextArg = expandedArgs[i]; |
| } else { |
| builder.error( |
| new StringDiagnostic( |
| "Missing parameter for " + expandedArgs[i - 1] + ".", argsOrigin)); |
| break; |
| } |
| if (OPTIONS_WITH_TWO_PARAMETERS.contains(arg)) { |
| if (++i < expandedArgs.length) { |
| nextNextArg = expandedArgs[i]; |
| } else { |
| builder.error( |
| new StringDiagnostic( |
| "Missing parameter for " + expandedArgs[i - 2] + ".", argsOrigin)); |
| break; |
| } |
| } |
| } |
| if (arg.length() == 0) { |
| continue; |
| } else if (arg.equals("--help")) { |
| builder.setPrintHelp(true); |
| } else if (arg.equals("--version")) { |
| builder.setPrintVersion(true); |
| } else if (arg.equals("--debug")) { |
| if (state.mode == CompilationMode.RELEASE) { |
| builder.error( |
| new StringDiagnostic( |
| "Cannot compile in both --debug and --release mode.", argsOrigin)); |
| } |
| state.mode = CompilationMode.DEBUG; |
| } else if (arg.equals("--release")) { |
| if (state.mode == CompilationMode.DEBUG) { |
| builder.error( |
| new StringDiagnostic( |
| "Cannot compile in both --debug and --release mode.", argsOrigin)); |
| } |
| state.mode = CompilationMode.RELEASE; |
| } else if (arg.equals("--dex")) { |
| if (state.outputMode == OutputMode.ClassFile) { |
| builder.error( |
| new StringDiagnostic( |
| "Cannot compile in both --dex and --classfile output mode.", argsOrigin)); |
| } |
| state.outputMode = OutputMode.DexIndexed; |
| } else if (arg.equals("--classfile")) { |
| if (state.outputMode == OutputMode.DexIndexed) { |
| builder.error( |
| new StringDiagnostic( |
| "Cannot compile in both --dex and --classfile output mode.", argsOrigin)); |
| } |
| state.outputMode = OutputMode.ClassFile; |
| } else if (arg.equals("--output")) { |
| if (state.outputPath != null) { |
| builder.error( |
| new StringDiagnostic( |
| "Cannot output both to '" |
| + state.outputPath.toString() |
| + "' and '" |
| + nextArg |
| + "'", |
| argsOrigin)); |
| } |
| state.outputPath = Paths.get(nextArg); |
| } else if (arg.equals("--lib")) { |
| addLibraryArgument(builder, argsOrigin, nextArg); |
| } else if (arg.equals("--classpath")) { |
| builder.addClasspathFiles(Paths.get(nextArg)); |
| } else if (arg.equals(MIN_API_FLAG)) { |
| if (state.hasDefinedApiLevel) { |
| builder.error( |
| new StringDiagnostic("Cannot set multiple " + MIN_API_FLAG + " options", argsOrigin)); |
| } else { |
| parsePositiveIntArgument( |
| builder::error, MIN_API_FLAG, nextArg, argsOrigin, builder::setMinApiLevel); |
| state.hasDefinedApiLevel = true; |
| } |
| } else if (arg.equals(THREAD_COUNT_FLAG)) { |
| parsePositiveIntArgument( |
| builder::error, THREAD_COUNT_FLAG, nextArg, argsOrigin, builder::setThreadCount); |
| } else if (arg.equals("--no-tree-shaking")) { |
| builder.setDisableTreeShaking(true); |
| } else if (arg.equals("--no-minification")) { |
| builder.setDisableMinification(true); |
| } else if (arg.equals("--no-desugaring")) { |
| builder.setDisableDesugaring(true); |
| } else if (arg.equals("--main-dex-rules")) { |
| builder.addMainDexRulesFiles(Paths.get(nextArg)); |
| } else if (arg.equals("--feature")) { |
| featureSplitJars |
| .computeIfAbsent(Paths.get(nextNextArg), k -> new ArrayList<>()) |
| .add(Paths.get(nextArg)); |
| } else if (arg.equals("--main-dex-list")) { |
| builder.addMainDexListFiles(Paths.get(nextArg)); |
| } else if (arg.equals("--main-dex-list-output")) { |
| builder.setMainDexListOutputPath(Paths.get(nextArg)); |
| } else if (arg.equals("--optimize-multidex-for-linearalloc")) { |
| builder.setOptimizeMultidexForLinearAlloc(true); |
| } else if (arg.equals("--pg-conf")) { |
| builder.addProguardConfigurationFiles(Paths.get(nextArg)); |
| } else if (arg.equals("--pg-map-output")) { |
| builder.setProguardMapOutputPath(Paths.get(nextArg)); |
| } else if (arg.equals("--desugared-lib")) { |
| builder.addDesugaredLibraryConfiguration(StringResource.fromFile(Paths.get(nextArg))); |
| } else if (arg.equals("--desugared-lib-pg-conf-output")) { |
| StringConsumer consumer = new StringConsumer.FileConsumer(Paths.get(nextArg)); |
| builder.setDesugaredLibraryKeepRuleConsumer(consumer); |
| } else if (arg.equals("--no-data-resources")) { |
| state.includeDataResources = false; |
| } else if (arg.startsWith("--")) { |
| if (tryParseAssertionArgument(builder, arg, argsOrigin)) { |
| continue; |
| } |
| int argsConsumed = tryParseMapDiagnostics(builder, arg, expandedArgs, i, argsOrigin); |
| if (argsConsumed >= 0) { |
| i += argsConsumed; |
| continue; |
| } |
| argsConsumed = tryParseDump(builder, arg, expandedArgs, i, argsOrigin); |
| if (argsConsumed >= 0) { |
| i += argsConsumed; |
| continue; |
| } |
| builder.error(new StringDiagnostic("Unknown option: " + arg, argsOrigin)); |
| } else if (arg.startsWith("@")) { |
| builder.error(new StringDiagnostic("Recursive @argfiles are not supported: ", argsOrigin)); |
| } else { |
| builder.addProgramFiles(Paths.get(arg)); |
| } |
| } |
| featureSplitJars.forEach( |
| (outputPath, inputJars) -> addFeatureJar(builder, outputPath, inputJars)); |
| } |
| |
| public void addFeatureJar(R8Command.Builder builder, Path outputPath, List<Path> inputJarPaths) { |
| builder.addFeatureSplit( |
| featureSplitGenerator -> { |
| featureSplitGenerator.setProgramConsumer( |
| builder.createProgramOutputConsumer(outputPath, OutputMode.DexIndexed, true)); |
| for (Path inputPath : inputJarPaths) { |
| featureSplitGenerator.addProgramResourceProvider( |
| ArchiveProgramResourceProvider.fromArchive(inputPath)); |
| } |
| return featureSplitGenerator.build(); |
| }); |
| } |
| } |
