| // 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.FlagFile; |
| import com.android.tools.r8.utils.StringDiagnostic; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.Arrays; |
| |
| public class R8CommandParser extends BaseCompilerCommandParser { |
| |
| public static void main(String[] args) throws CompilationFailedException { |
| R8Command command = parse(args, Origin.root()).build(); |
| if (command.isPrintHelp()) { |
| System.out.println(USAGE_MESSAGE); |
| System.exit(1); |
| } |
| 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; |
| } |
| |
| static final String USAGE_MESSAGE = |
| String.join( |
| "\n", |
| Arrays.asList( |
| "Usage: r8 [options] <input-files>", |
| " where <input-files> are any combination of dex, class, zip, jar, or apk files", |
| " and options are:", |
| " --release # Compile without debugging information (default).", |
| " --debug # Compile with debugging information.", |
| // TODO(b/65390962): Add help for output-mode flags once the CF backend is complete. |
| // " --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> # Add <file> as a library resource.", |
| " --min-api # Minimum Android API level compatibility.", |
| " --pg-conf <file> # Proguard configuration <file>.", |
| " --pg-map-output <file> # Output the resulting name and line mapping to <file>.", |
| " --no-tree-shaking # Force disable tree shaking of unreachable classes.", |
| " --no-minification # Force disable minification of names.", |
| " --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.", |
| " --main-dex-list-output <file> # Output the full main-dex list in <file>.", |
| " --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); |
| return builder; |
| } |
| |
| private void parse( |
| String[] args, Origin argsOrigin, R8Command.Builder builder, ParseState state) { |
| String[] expandedArgs = FlagFile.expandFlagFiles(args, builder); |
| for (int i = 0; i < expandedArgs.length; i++) { |
| String arg = expandedArgs[i].trim(); |
| 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")) { |
| String outputPath = expandedArgs[++i]; |
| if (state.outputPath != null) { |
| builder.error( |
| new StringDiagnostic( |
| "Cannot output both to '" |
| + state.outputPath.toString() |
| + "' and '" |
| + outputPath |
| + "'", |
| argsOrigin)); |
| } |
| state.outputPath = Paths.get(outputPath); |
| } else if (arg.equals("--lib")) { |
| builder.addLibraryFiles(Paths.get(expandedArgs[++i])); |
| } else if (arg.equals("--min-api")) { |
| String minApiString = expandedArgs[++i]; |
| if (state.hasDefinedApiLevel) { |
| builder.error(new StringDiagnostic("Cannot set multiple --min-api options", argsOrigin)); |
| } else { |
| parseMinApi(builder, minApiString, argsOrigin); |
| state.hasDefinedApiLevel = true; |
| } |
| } 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(expandedArgs[++i])); |
| } else if (arg.equals("--main-dex-list")) { |
| builder.addMainDexListFiles(Paths.get(expandedArgs[++i])); |
| } else if (arg.equals("--main-dex-list-output")) { |
| builder.setMainDexListOutputPath(Paths.get(expandedArgs[++i])); |
| } else if (arg.equals("--optimize-multidex-for-linearalloc")) { |
| builder.setOptimizeMultidexForLinearAlloc(true); |
| } else if (arg.equals("--pg-conf")) { |
| builder.addProguardConfigurationFiles(Paths.get(expandedArgs[++i])); |
| } else if (arg.equals("--pg-map-output")) { |
| builder.setProguardMapOutputPath(Paths.get(expandedArgs[++i])); |
| } else { |
| if (arg.startsWith("--")) { |
| builder.error(new StringDiagnostic("Unknown option: " + arg, argsOrigin)); |
| } |
| builder.addProgramFiles(Paths.get(arg)); |
| } |
| } |
| } |
| } |
