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// Copyright (c) 2020, 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.resolution;
import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent;
import static junit.framework.TestCase.assertTrue;
import static org.hamcrest.CoreMatchers.not;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assume.assumeTrue;
import static org.objectweb.asm.Opcodes.INVOKESPECIAL;
import com.android.tools.r8.CompilationFailedException;
import com.android.tools.r8.TestBase;
import com.android.tools.r8.TestParameters;
import com.android.tools.r8.TestParametersCollection;
import com.android.tools.r8.graph.AppView;
import com.android.tools.r8.graph.DexEncodedMethod;
import com.android.tools.r8.graph.DexMethod;
import com.android.tools.r8.graph.DexProgramClass;
import com.android.tools.r8.graph.ResolutionResult;
import com.android.tools.r8.shaking.AppInfoWithLiveness;
import com.android.tools.r8.utils.DescriptorUtils;
import java.io.IOException;
import java.util.concurrent.ExecutionException;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
@RunWith(Parameterized.class)
public class InvokeSuperCallInStaticTest extends TestBase {
private static final String[] EXPECTED = new String[] {"Base.collect()"};
private final TestParameters parameters;
@Parameters(name = "{0}")
public static TestParametersCollection data() {
return getTestParameters().withAllRuntimesAndApiLevels().build();
}
public InvokeSuperCallInStaticTest(TestParameters parameters) {
this.parameters = parameters;
}
@Test
public void testResolution() throws Exception {
assumeTrue(parameters.useRuntimeAsNoneRuntime());
AppView<AppInfoWithLiveness> appView =
computeAppViewWithLiveness(
buildClasses(Base.class, Main.class)
.addClassProgramData(getAWithRewrittenInvokeSpecialToBase())
.build(),
Main.class);
AppInfoWithLiveness appInfo = appView.appInfo();
DexMethod method = buildNullaryVoidMethod(Base.class, "collect", appInfo.dexItemFactory());
ResolutionResult resolutionResult = appInfo.resolveMethodOnClass(method);
assertTrue(resolutionResult.isSingleResolution());
DexProgramClass context =
appView.definitionForProgramType(buildType(A.class, appInfo.dexItemFactory()));
DexEncodedMethod lookedUpMethod =
resolutionResult.lookupInvokeSuperTarget(context, appView.appInfo());
assertNotNull(lookedUpMethod);
assertEquals(lookedUpMethod.method, method);
}
@Test
public void testRuntime() throws IOException, CompilationFailedException, ExecutionException {
testForRuntime(parameters)
.addProgramClasses(Base.class, Main.class)
.addProgramClassFileData(getAWithRewrittenInvokeSpecialToBase())
.run(parameters.getRuntime(), Main.class)
.assertSuccessWithOutputLines(EXPECTED);
}
@Test
public void testR8() throws IOException, CompilationFailedException, ExecutionException {
testForR8(parameters.getBackend())
.addProgramClasses(Base.class, Main.class)
.addProgramClassFileData(getAWithRewrittenInvokeSpecialToBase())
.addKeepMainRule(Main.class)
.setMinApi(parameters.getApiLevel())
.run(parameters.getRuntime(), Main.class)
.assertSuccessWithOutputLines(EXPECTED)
.inspect(
inspector -> {
assertThat(inspector.clazz(A.class), not(isPresent()));
});
}
private byte[] getAWithRewrittenInvokeSpecialToBase() throws IOException {
return transformer(A.class)
.transformMethodInsnInMethod(
"callSuper",
(opcode, owner, name, descriptor, isInterface, continuation) -> {
continuation.visitMethodInsn(
INVOKESPECIAL,
DescriptorUtils.getBinaryNameFromJavaType(Base.class.getTypeName()),
name,
descriptor,
false);
})
.transform();
}
public static class Base {
public void collect() {
System.out.println("Base.collect()");
}
}
public static class A extends Base {
@Override
public void collect() {
System.out.println("A.collect()");
}
public static void callSuper(A a) {
a.collect(); // Will be rewritten from invoke-virtual to invoke-special Base.collect();
}
}
public static class Main {
public static void main(String[] args) {
A.callSuper(new A());
}
}
}