| // 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.ir.optimize.string; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assume.assumeTrue; |
| |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.TestRunResult; |
| import com.android.tools.r8.graph.DexMethod; |
| import com.android.tools.r8.utils.StringUtils; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.android.tools.r8.utils.codeinspector.MethodSubject; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class StringContentCheckTest extends TestBase { |
| private static final String STRING_DESCRIPTOR = "Ljava/lang/String;"; |
| private static final String JAVA_OUTPUT = StringUtils.lines( |
| // s1, contains(String) |
| "true", |
| // s1, startsWith(String) |
| "true", |
| // s1, endsWith(String) |
| "true", |
| // s1, equals(String) |
| "true", |
| // s1, equalsIgnoreCase(String) |
| "true", |
| // s1, contentEquals(CharSequence) |
| "true", |
| // s1, contentEquals(StringBuffer) |
| "true", |
| // s1, indexOf(int) |
| "3", |
| // s1, indexOf(String) |
| "4", |
| // s1, lastIndexOf(int) |
| "16", |
| // s1, lastIndexOf(String) |
| "17", |
| // s1, compareTo(String) |
| "true", |
| // s1, compareToIgnoreCase(String) |
| "true", |
| // s1, substring(int) |
| "prefix", |
| // s1, substring(int, int) |
| "suffix", |
| // s1, substring(int, int) |
| "-suffix", |
| // s2, contains(String) |
| "false", |
| // s2, startsWith(String) |
| "false", |
| // s2, endsWith(String) |
| "false", |
| // s2, equals(String) |
| "false", |
| // s2, equalsIgnoreCase(String) |
| "false", |
| // s2, contentEquals(CharSequence) |
| "false", |
| // s2, contentEquals(StringBuffer) |
| "false", |
| // s2, indexOf(int) |
| "-1", |
| // s2, indexOf(String) |
| "-1", |
| // s2, lastIndexOf(int) |
| "-1", |
| // s2, lastIndexOf(String) |
| "-1", |
| // s2, compareTo(String) |
| "false", |
| // s2, compareToIgnoreCase(String) |
| "false", |
| // s2, substring(int, int) |
| "SUFFIX", |
| // argCouldBeNull |
| "false" |
| ); |
| private static final Class<?> MAIN = TestClass.class; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimes().build(); |
| } |
| |
| private final TestParameters parameters; |
| |
| public StringContentCheckTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testJVMOutput() throws Exception { |
| assumeTrue("Only run JVM reference on CF runtimes", parameters.isCfRuntime()); |
| testForJvm() |
| .addTestClasspath() |
| .run(parameters.getRuntime(), MAIN) |
| .assertSuccessWithOutput(JAVA_OUTPUT); |
| } |
| |
| private static boolean isStringContentChecker(DexMethod method) { |
| return method.holder.toDescriptorString().equals(STRING_DESCRIPTOR) |
| && (method.proto.returnType.isBooleanType() |
| || method.proto.returnType.isIntType() |
| || method.proto.returnType.toDescriptorString().equals(STRING_DESCRIPTOR)) |
| && (method.name.toString().equals("contains") |
| || method.name.toString().equals("startsWith") |
| || method.name.toString().equals("endsWith") |
| || method.name.toString().equals("equals") |
| || method.name.toString().equals("equalsIgnoreCase") |
| || method.name.toString().equals("contentEquals") |
| || method.name.toString().equals("indexOf") |
| || method.name.toString().equals("lastIndexOf") |
| || method.name.toString().equals("compareTo") |
| || method.name.toString().equals("compareToIgnoreCase") |
| || method.name.toString().equals("substring")); |
| } |
| |
| private long countStringContentChecker(MethodSubject method) { |
| return method.streamInstructions().filter(instructionSubject -> { |
| if (instructionSubject.isInvoke()) { |
| return isStringContentChecker(instructionSubject.getMethod()); |
| } |
| return false; |
| }).count(); |
| } |
| |
| private void test(TestRunResult result, int expectedStringContentCheckerCount) throws Exception { |
| CodeInspector codeInspector = result.inspector(); |
| ClassSubject mainClass = codeInspector.clazz(MAIN); |
| MethodSubject mainMethod = mainClass.mainMethod(); |
| assertThat(mainMethod, isPresent()); |
| long count = countStringContentChecker(mainMethod); |
| assertEquals(expectedStringContentCheckerCount, count); |
| |
| MethodSubject argCouldBeNull = mainClass.uniqueMethodWithName("argCouldBeNull"); |
| assertThat(argCouldBeNull, isPresent()); |
| // Because of nullable argument, all checkers should remain. |
| assertEquals(10, countStringContentChecker(argCouldBeNull)); |
| } |
| |
| @Test |
| public void testD8() throws Exception { |
| assumeTrue("Only run D8 for Dex backend", parameters.isDexRuntime()); |
| |
| TestRunResult result = |
| testForD8() |
| .debug() |
| .addProgramClasses(MAIN) |
| .setMinApi(parameters.getRuntime()) |
| .run(parameters.getRuntime(), MAIN) |
| .assertSuccessWithOutput(JAVA_OUTPUT); |
| test(result, 31); |
| |
| result = |
| testForD8() |
| .release() |
| .addProgramClasses(MAIN) |
| .setMinApi(parameters.getRuntime()) |
| .run(parameters.getRuntime(), MAIN) |
| .assertSuccessWithOutput(JAVA_OUTPUT); |
| test(result, 16); |
| } |
| |
| @Test |
| public void testR8() throws Exception { |
| TestRunResult result = |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(MAIN) |
| .enableInliningAnnotations() |
| .addKeepMainRule(MAIN) |
| .setMinApi(parameters.getRuntime()) |
| .run(parameters.getRuntime(), MAIN) |
| .assertSuccessWithOutput(JAVA_OUTPUT); |
| test(result, 16); |
| } |
| |
| static class TestClass { |
| |
| @NeverInline |
| static boolean argCouldBeNull(String arg) { |
| return "CONST".contains(arg) |
| && "prefix".startsWith(arg) |
| && "suffix".endsWith(arg) |
| && "CONST".equals(arg) |
| && "CONST".equalsIgnoreCase(arg) |
| && "CONST".contentEquals(arg) |
| && "CONST".indexOf(arg) > 0 |
| && "CONST".lastIndexOf(arg) > 0 |
| && "CONST".compareTo(arg) > 0 |
| && "CONST".compareToIgnoreCase(arg) > 0; |
| } |
| |
| public static void main(String[] args) { |
| { |
| String s1 = "prefix-CONST-suffix"; |
| System.out.println(s1.contains("CONST")); |
| System.out.println(s1.startsWith("prefix")); |
| System.out.println(s1.endsWith("suffix")); |
| System.out.println(s1.equals("prefix-CONST-suffix")); |
| System.out.println(s1.equalsIgnoreCase("PREFIX-const-SUFFIX")); |
| System.out.println(s1.contentEquals("prefix-CONST-suffix")); |
| System.out.println(s1.contentEquals(new StringBuffer("prefix-CONST-suffix"))); |
| System.out.println(s1.indexOf('f')); |
| System.out.println(s1.indexOf("ix")); |
| System.out.println(s1.lastIndexOf('f')); |
| System.out.println(s1.lastIndexOf("ix")); |
| System.out.println(s1.compareTo("prefix-CONST-suffix") == 0); |
| System.out.println(s1.compareToIgnoreCase("PREFIX-const-SUFFIX") == 0); |
| // "prefix" exists |
| System.out.println(s1.substring(0, 6)); |
| // "suffix" exists |
| System.out.println(s1.substring(13)); |
| // "-suffix" doesn't. |
| System.out.println(s1.substring(12)); |
| } |
| |
| { |
| // Not compile-time constant string |
| String s2 = args.length > 8 ? "prefix-CONST-suffix" : "PREFIX-const-SUFFIX"; |
| System.out.println(s2.contains("CONST")); |
| System.out.println(s2.startsWith("prefix")); |
| System.out.println(s2.endsWith("suffix")); |
| System.out.println(s2.equals("prefix-CONST-suffix")); |
| System.out.println(s2.equalsIgnoreCase("pre-con-suf")); |
| System.out.println(s2.contentEquals("prefix-CONST-suffix")); |
| System.out.println(s2.contentEquals(new StringBuffer("prefix-CONST-suffix"))); |
| System.out.println(s2.indexOf('f')); |
| System.out.println(s2.indexOf("ix")); |
| System.out.println(s2.lastIndexOf('f')); |
| System.out.println(s2.lastIndexOf("ix")); |
| System.out.println(s2.compareTo("prefix-CONST-suffix") == 0); |
| System.out.println(s2.compareToIgnoreCase("pre-con-suf") == 0); |
| System.out.println(s2.substring(13)); |
| } |
| |
| { |
| System.out.println(argCouldBeNull("prefix-CONST-suffix")); |
| try { |
| argCouldBeNull(null); |
| throw new AssertionError("Should raise NullPointerException"); |
| } catch (NullPointerException npe) { |
| // expected |
| } |
| } |
| |
| { |
| try { |
| System.out.println("qwerty".substring(8)); |
| throw new AssertionError("Should raise StringIndexOutOfBoundsException"); |
| } catch (StringIndexOutOfBoundsException e) { |
| // expected |
| } |
| } |
| } |
| } |
| } |