| // 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.D8CommandParser.OrderedClassFileResourceProvider; |
| 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.Arrays; |
| import java.util.Set; |
| |
| public class L8CommandParser extends BaseCompilerCommandParser<L8Command, L8Command.Builder> { |
| |
| private static final Set<String> OPTIONS_WITH_PARAMETER = |
| ImmutableSet.of( |
| "--output", |
| "--lib", |
| MIN_API_FLAG, |
| "--desugared-lib", |
| THREAD_COUNT_FLAG, |
| "--pg-conf", |
| "--pg-map-output"); |
| |
| public static void main(String[] args) throws CompilationFailedException { |
| L8Command command = parse(args, Origin.root()).build(); |
| if (command.isPrintHelp()) { |
| System.out.println(USAGE_MESSAGE); |
| } else { |
| L8.run(command); |
| } |
| } |
| |
| static final String USAGE_MESSAGE = |
| String.join( |
| "\n", |
| Iterables.concat( |
| Arrays.asList( |
| "Usage: l8 [options] <input-files>", |
| " where <input-files> are any combination of dex, class, zip, jar, or apk files", |
| " and options are:", |
| " --debug # Compile with debugging information (default).", |
| " --release # Compile without debugging information.", |
| " --output <file> # Output result in <outfile>.", |
| " # <file> must be an existing directory or a zip file.", |
| " --lib <file|jdk-home> # Add <file|jdk-home> as a library 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)."), |
| ASSERTIONS_USAGE_MESSAGE, |
| THREAD_COUNT_USAGE_MESSAGE, |
| MAP_DIAGNOSTICS_USAGE_MESSAGE, |
| Arrays.asList( |
| " --version # Print the version of l8.", |
| " --help # Print this message."))); |
| |
| /** |
| * Parse the D8 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 D8 command builder with state set up according to parsed command line. |
| */ |
| public static L8Command.Builder parse(String[] args, Origin origin) { |
| return new L8CommandParser().parse(args, origin, L8Command.builder()); |
| } |
| |
| /** |
| * Parse the D8 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 D8 command builder with state set up according to parsed command line. |
| */ |
| public static L8Command.Builder parse(String[] args, Origin origin, DiagnosticsHandler handler) { |
| return new L8CommandParser().parse(args, origin, L8Command.builder(handler)); |
| } |
| |
| private L8Command.Builder parse(String[] args, Origin origin, L8Command.Builder builder) { |
| CompilationMode compilationMode = null; |
| Path outputPath = null; |
| OutputMode outputMode = OutputMode.DexIndexed; |
| boolean hasDefinedApiLevel = false; |
| OrderedClassFileResourceProvider.Builder classpathBuilder = |
| OrderedClassFileResourceProvider.builder(); |
| String[] expandedArgs = FlagFile.expandFlagFiles(args, builder::error); |
| for (int i = 0; i < expandedArgs.length; i++) { |
| String arg = expandedArgs[i].trim(); |
| String nextArg = 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] + ".", origin)); |
| 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 (compilationMode == CompilationMode.RELEASE) { |
| builder.error( |
| new StringDiagnostic("Cannot compile in both --debug and --release mode.", origin)); |
| continue; |
| } |
| compilationMode = CompilationMode.DEBUG; |
| } else if (arg.equals("--release")) { |
| if (compilationMode == CompilationMode.DEBUG) { |
| builder.error( |
| new StringDiagnostic("Cannot compile in both --debug and --release mode.", origin)); |
| continue; |
| } |
| compilationMode = CompilationMode.RELEASE; |
| } else if (arg.equals("--output")) { |
| if (outputPath != null) { |
| builder.error( |
| new StringDiagnostic( |
| "Cannot output both to '" + outputPath.toString() + "' and '" + nextArg + "'", |
| origin)); |
| continue; |
| } |
| outputPath = Paths.get(nextArg); |
| } else if (arg.equals(MIN_API_FLAG)) { |
| if (hasDefinedApiLevel) { |
| builder.error( |
| new StringDiagnostic("Cannot set multiple " + MIN_API_FLAG + " options", origin)); |
| } else { |
| parsePositiveIntArgument( |
| builder::error, MIN_API_FLAG, nextArg, origin, builder::setMinApiLevel); |
| hasDefinedApiLevel = true; |
| } |
| } else if (arg.equals("--lib")) { |
| addLibraryArgument(builder, origin, nextArg); |
| } 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("--classfile")) { |
| outputMode = OutputMode.ClassFile; |
| } else if (arg.equals(THREAD_COUNT_FLAG)) { |
| parsePositiveIntArgument( |
| builder::error, THREAD_COUNT_FLAG, nextArg, origin, builder::setThreadCount); |
| } else if (arg.startsWith("--")) { |
| if (tryParseAssertionArgument(builder, arg, origin)) { |
| continue; |
| } |
| int argsConsumed = tryParseMapDiagnostics(builder, arg, expandedArgs, i, origin); |
| if (argsConsumed >= 0) { |
| i += argsConsumed; |
| continue; |
| } |
| argsConsumed = tryParseDump(builder, arg, expandedArgs, i, origin); |
| if (argsConsumed >= 0) { |
| i += argsConsumed; |
| continue; |
| } |
| builder.error(new StringDiagnostic("Unknown option: " + arg, origin)); |
| } else { |
| builder.addProgramFiles(Paths.get(arg)); |
| } |
| } |
| if (!classpathBuilder.isEmpty()) { |
| builder.addClasspathResourceProvider(classpathBuilder.build()); |
| } |
| if (compilationMode != null) { |
| builder.setMode(compilationMode); |
| } |
| if (outputPath == null) { |
| outputPath = Paths.get("."); |
| } |
| return builder.setOutput(outputPath, outputMode); |
| } |
| } |
