| // 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.errors.Unreachable; |
| import com.android.tools.r8.origin.Origin; |
| import com.android.tools.r8.references.MethodReference; |
| import com.android.tools.r8.references.Reference; |
| import com.android.tools.r8.utils.DescriptorUtils; |
| import com.android.tools.r8.utils.ExceptionDiagnostic; |
| import com.android.tools.r8.utils.Reporter; |
| import com.android.tools.r8.utils.StringDiagnostic; |
| import java.io.IOException; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.function.Consumer; |
| |
| public class BaseCompilerCommandParser< |
| C extends BaseCompilerCommand, B extends BaseCompilerCommand.Builder<C, B>> { |
| |
| protected static final String MIN_API_FLAG = "--min-api"; |
| protected static final String THREAD_COUNT_FLAG = "--thread-count"; |
| protected static final String MAP_DIAGNOSTICS = "--map-diagnostics"; |
| protected static final String DUMP_INPUT_TO_FILE = "--dumpinputtofile"; |
| protected static final String DUMP_INPUT_TO_DIRECTORY = "--dumpinputtodirectory"; |
| |
| public static void parsePositiveIntArgument( |
| Consumer<Diagnostic> errorConsumer, |
| String flag, |
| String argument, |
| Origin origin, |
| Consumer<Integer> setter) { |
| int value; |
| try { |
| value = Integer.parseInt(argument); |
| } catch (NumberFormatException e) { |
| errorConsumer.accept( |
| new StringDiagnostic("Invalid argument to " + flag + ": " + argument, origin)); |
| return; |
| } |
| if (value < 1) { |
| errorConsumer.accept( |
| new StringDiagnostic("Invalid argument to " + flag + ": " + argument, origin)); |
| return; |
| } |
| setter.accept(value); |
| } |
| |
| private static String PACKAGE_ASSERTION_POSTFIX = "..."; |
| |
| private enum AssertionTransformationType { |
| ENABLE, |
| DISABLE, |
| PASSTHROUGH, |
| HANDLER |
| } |
| |
| private AssertionsConfiguration.Builder prepareBuilderForScope( |
| AssertionsConfiguration.Builder builder, |
| AssertionTransformationType transformation, |
| MethodReference assertionHandler) { |
| switch (transformation) { |
| case ENABLE: |
| return builder.setCompileTimeEnable(); |
| case DISABLE: |
| return builder.setCompileTimeDisable(); |
| case PASSTHROUGH: |
| return builder.setPassthrough(); |
| case HANDLER: |
| return builder.setAssertionHandler(assertionHandler); |
| default: |
| throw new Unreachable(); |
| } |
| } |
| |
| private void addAssertionTransformation( |
| B builder, |
| AssertionTransformationType transformation, |
| MethodReference assertionHandler, |
| String scope) { |
| if (scope == null) { |
| builder.addAssertionsConfiguration( |
| b -> prepareBuilderForScope(b, transformation, assertionHandler).setScopeAll().build()); |
| } else { |
| assert scope.length() > 0; |
| if (scope.endsWith(PACKAGE_ASSERTION_POSTFIX)) { |
| builder.addAssertionsConfiguration( |
| b -> |
| prepareBuilderForScope(b, transformation, assertionHandler) |
| .setScopePackage( |
| scope.substring(0, scope.length() - PACKAGE_ASSERTION_POSTFIX.length())) |
| .build()); |
| } else { |
| builder.addAssertionsConfiguration( |
| b -> |
| prepareBuilderForScope(b, transformation, assertionHandler) |
| .setScopeClass(scope) |
| .build()); |
| } |
| } |
| } |
| |
| boolean tryParseAssertionArgument(B builder, String arg, Origin origin) { |
| String FORCE_ENABLE_ASSERTIONS = "--force-enable-assertions"; |
| String FORCE_EA = "--force-ea"; |
| String FORCE_DISABLE_ASSERTIONS = "--force-disable-assertions"; |
| String FORCE_DA = "--force-da"; |
| String FORCE_PASSTHROUGH_ASSERTIONS = "--force-passthrough-assertions"; |
| String FORCE_PA = "--force-pa"; |
| String FORCE_ASSERTIONS_HANDLER = "--force-assertions-handler"; |
| String FORCE_AH = "--force-ah"; |
| |
| AssertionTransformationType transformation = null; |
| MethodReference assertionsHandler = null; |
| String remaining = null; |
| if (arg.startsWith(FORCE_ENABLE_ASSERTIONS)) { |
| transformation = AssertionTransformationType.ENABLE; |
| remaining = arg.substring(FORCE_ENABLE_ASSERTIONS.length()); |
| } else if (arg.startsWith(FORCE_EA)) { |
| transformation = AssertionTransformationType.ENABLE; |
| remaining = arg.substring(FORCE_EA.length()); |
| } else if (arg.startsWith(FORCE_DISABLE_ASSERTIONS)) { |
| transformation = AssertionTransformationType.DISABLE; |
| remaining = arg.substring(FORCE_DISABLE_ASSERTIONS.length()); |
| } else if (arg.startsWith(FORCE_DA)) { |
| transformation = AssertionTransformationType.DISABLE; |
| remaining = arg.substring(FORCE_DA.length()); |
| } else if (arg.startsWith(FORCE_PASSTHROUGH_ASSERTIONS)) { |
| transformation = AssertionTransformationType.PASSTHROUGH; |
| remaining = arg.substring(FORCE_PASSTHROUGH_ASSERTIONS.length()); |
| } else if (arg.startsWith(FORCE_PA)) { |
| transformation = AssertionTransformationType.PASSTHROUGH; |
| remaining = arg.substring(FORCE_PA.length()); |
| } else if (arg.startsWith(FORCE_ASSERTIONS_HANDLER)) { |
| transformation = AssertionTransformationType.HANDLER; |
| remaining = arg.substring(FORCE_ASSERTIONS_HANDLER.length()); |
| } else if (arg.startsWith(FORCE_AH)) { |
| transformation = AssertionTransformationType.HANDLER; |
| remaining = arg.substring(FORCE_AH.length()); |
| } |
| if (transformation == AssertionTransformationType.HANDLER) { |
| if (remaining.length() == 0 || (remaining.length() == 1 && remaining.charAt(0) == ':')) { |
| throw builder.fatalError( |
| new StringDiagnostic("Missing required argument <handler method>", origin)); |
| } |
| if (remaining.charAt(0) != ':') { |
| return false; |
| } |
| remaining = remaining.substring(1); |
| int index = remaining.indexOf(':'); |
| if (index == 0) { |
| throw builder.fatalError( |
| new StringDiagnostic("Missing required argument <handler method>", origin)); |
| } |
| String assertionsHandlerString = index > 0 ? remaining.substring(0, index) : remaining; |
| int lastDotIndex = assertionsHandlerString.lastIndexOf('.'); |
| if (assertionsHandlerString.length() < 3 |
| || lastDotIndex <= 0 |
| || lastDotIndex == assertionsHandlerString.length() - 1 |
| || !DescriptorUtils.isValidJavaType(assertionsHandlerString.substring(0, lastDotIndex))) { |
| throw builder.fatalError( |
| new StringDiagnostic( |
| "Invalid argument <handler method>: " + assertionsHandlerString, origin)); |
| } |
| assertionsHandler = |
| Reference.methodFromDescriptor( |
| DescriptorUtils.javaTypeToDescriptor( |
| assertionsHandlerString.substring(0, lastDotIndex)), |
| assertionsHandlerString.substring(lastDotIndex + 1), |
| "(Ljava/lang/Throwable;)V"); |
| remaining = remaining.substring(assertionsHandlerString.length()); |
| } |
| if (transformation != null) { |
| if (remaining.length() == 0) { |
| addAssertionTransformation(builder, transformation, assertionsHandler, null); |
| return true; |
| } else { |
| if (remaining.length() == 1 && remaining.charAt(0) == ':') { |
| throw builder.fatalError(new StringDiagnostic("Missing optional argument", origin)); |
| } |
| if (remaining.charAt(0) != ':') { |
| return false; |
| } |
| String classOrPackageScope = remaining.substring(1); |
| if (classOrPackageScope.contains(";") |
| || classOrPackageScope.contains("[") |
| || classOrPackageScope.contains("/")) { |
| builder.error( |
| new StringDiagnostic("Illegal assertion scope: " + classOrPackageScope, origin)); |
| } |
| addAssertionTransformation( |
| builder, transformation, assertionsHandler, remaining.substring(1)); |
| return true; |
| } |
| } else { |
| return false; |
| } |
| } |
| |
| int tryParseMapDiagnostics(B builder, String arg, String[] args, int argsIndex, Origin origin) { |
| return tryParseMapDiagnostics( |
| builder::error, builder.getReporter(), arg, args, argsIndex, origin); |
| } |
| |
| private static DiagnosticsLevel tryParseLevel( |
| Consumer<Diagnostic> errorHandler, String arg, Origin origin) { |
| if (arg.equals("error")) { |
| return DiagnosticsLevel.ERROR; |
| } |
| if (arg.equals("warning")) { |
| return DiagnosticsLevel.WARNING; |
| } |
| if (arg.equals("info")) { |
| return DiagnosticsLevel.INFO; |
| } |
| errorHandler.accept( |
| new StringDiagnostic( |
| "Invalid diagnostics level '" |
| + arg |
| + "'. Valid levels are 'error', 'warning' and 'info'.", |
| origin)); |
| |
| return null; |
| } |
| |
| public static int tryParseMapDiagnostics( |
| Consumer<Diagnostic> errorHandler, |
| Reporter reporter, |
| String arg, |
| String[] args, |
| int argsIndex, |
| Origin origin) { |
| if (!arg.startsWith(MAP_DIAGNOSTICS)) { |
| return -1; |
| } |
| if (args.length <= argsIndex + 2) { |
| errorHandler.accept(new StringDiagnostic("Missing argument(s) for " + arg + ".", origin)); |
| return args.length - argsIndex; |
| } |
| String remaining = arg.substring(MAP_DIAGNOSTICS.length()); |
| String diagnosticsClassName = ""; |
| if (remaining.length() > 0) { |
| if (remaining.length() == 1 || remaining.charAt(0) != ':') { |
| errorHandler.accept( |
| new StringDiagnostic("Invalid diagnostics type specification " + arg + ".", origin)); |
| return 0; |
| } |
| diagnosticsClassName = remaining.substring(1); |
| } |
| DiagnosticsLevel from = tryParseLevel(errorHandler, args[argsIndex + 1], origin); |
| DiagnosticsLevel to = tryParseLevel(errorHandler, args[argsIndex + 2], origin); |
| if (from != null && to != null) { |
| reporter.addDiagnosticsLevelMapping(from, diagnosticsClassName, to); |
| } |
| return 2; |
| } |
| |
| int tryParseDump(B builder, String arg, String[] args, int argsIndex, Origin origin) { |
| if (!arg.equals(DUMP_INPUT_TO_FILE) && !arg.equals(DUMP_INPUT_TO_DIRECTORY)) { |
| return -1; |
| } |
| if (args.length <= argsIndex + 1) { |
| builder.error(new StringDiagnostic("Missing argument(s) for " + arg + ".", origin)); |
| return args.length - argsIndex; |
| } |
| if (arg.equals(DUMP_INPUT_TO_FILE)) { |
| builder.dumpInputToFile(Paths.get(args[argsIndex + 1])); |
| } else { |
| assert arg.equals(DUMP_INPUT_TO_DIRECTORY); |
| builder.dumpInputToDirectory(Paths.get(args[argsIndex + 1])); |
| } |
| return 1; |
| } |
| |
| /** |
| * This method must match the lookup in |
| * {@link com.android.tools.r8.JdkClassFileProvider#fromJdkHome}. |
| */ |
| private static boolean isJdkHome(Path home) { |
| Path jrtFsJar = home.resolve("lib").resolve("jrt-fs.jar"); |
| if (Files.exists(jrtFsJar)) { |
| return true; |
| } |
| // JDK has rt.jar in jre/lib/rt.jar. |
| Path rtJar = home.resolve("jre").resolve("lib").resolve("rt.jar"); |
| if (Files.exists(rtJar)) { |
| return true; |
| } |
| // JRE has rt.jar in lib/rt.jar. |
| rtJar = home.resolve("lib").resolve("rt.jar"); |
| if (Files.exists(rtJar)) { |
| return true; |
| } |
| return false; |
| } |
| |
| static void addLibraryArgument(BaseCommand.Builder builder, Origin origin, String arg) { |
| Path path = Paths.get(arg); |
| if (isJdkHome(path)) { |
| try { |
| builder |
| .addLibraryResourceProvider(JdkClassFileProvider.fromJdkHome(path)); |
| } catch (IOException e) { |
| builder.error(new ExceptionDiagnostic(e, origin)); |
| } |
| } else { |
| builder.addLibraryFiles(path); |
| } |
| } |
| } |
