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/*
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.tools.layoutlib.create;
import org.junit.Test;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.Opcodes;
import java.io.IOException;
import java.util.Arrays;
import java.util.Set;
import java.util.LinkedList;
import java.util.List;
import java.util.StringJoiner;
import static org.junit.Assert.assertTrue;
/**
* {@link ClassVisitor} that logs all the calls to the different visit methods so they can be later
* inspected.
*/
class LoggingClassVisitor extends ClassVisitor {
List<String> mLog = new LinkedList<String>();
public LoggingClassVisitor() {
super(Main.ASM_VERSION);
}
public LoggingClassVisitor(ClassVisitor cv) {
super(Main.ASM_VERSION, cv);
}
private static String formatAccess(int access) {
StringJoiner modifiers = new StringJoiner(",");
if ((access & Opcodes.ACC_PUBLIC) != 0) {
modifiers.add("public");
}
if ((access & Opcodes.ACC_PRIVATE) != 0) {
modifiers.add("private");
}
if ((access & Opcodes.ACC_PROTECTED) != 0) {
modifiers.add("protected");
}
if ((access & Opcodes.ACC_STATIC) != 0) {
modifiers.add("static");
}
if ((access & Opcodes.ACC_FINAL) != 0) {
modifiers.add("static");
}
return "[" + modifiers.toString() + "]";
}
private void log(String method, String format, Object...args) {
mLog.add(
String.format("[%s] - %s", method, String.format(format, (Object[]) args))
);
}
@Override
public void visitOuterClass(String owner, String name, String desc) {
log(
"visitOuterClass",
"owner=%s, name=%s, desc=%s",
owner, name, desc
);
super.visitOuterClass(owner, name, desc);
}
@Override
public void visitInnerClass(String name, String outerName, String innerName, int access) {
log(
"visitInnerClass",
"name=%s, outerName=%s, innerName=%s, access=%s",
name, outerName, innerName, formatAccess(access)
);
super.visitInnerClass(name, outerName, innerName, access);
}
@Override
public void visit(int version, int access, String name, String signature, String superName,
String[] interfaces) {
log(
"visit",
"version=%d, access=%s, name=%s, signature=%s, superName=%s, interfaces=%s",
version, formatAccess(access), name, signature, superName, Arrays.toString(interfaces)
);
super.visit(version, access, name, signature, superName, interfaces);
}
}
class PackageProtectedClass {}
public class PromoteClassClassAdapterTest {
private static class PrivateClass {}
private static class ClassWithPrivateInnerClass {
private class InnerPrivateClass {}
}
@Test
public void testInnerClassPromotion() throws IOException {
ClassReader reader = new ClassReader(PrivateClass.class.getName());
LoggingClassVisitor log = new LoggingClassVisitor();
String rootClass = PromoteClassClassAdapterTest.class.getName();
PromoteClassClassAdapter adapter = new PromoteClassClassAdapter(log, Set.of(
rootClass + "$PrivateClass",
rootClass + "$ClassWithPrivateInnerClass$InnerPrivateClass"));
reader.accept(adapter, 0);
assertTrue(log.mLog.contains(
"[visitInnerClass] - " +
"name=com/android/tools/layoutlib/create" +
"/PromoteClassClassAdapterTest$PrivateClass, " +
"outerName=com/android/tools/layoutlib/create" +
"/PromoteClassClassAdapterTest, innerName=PrivateClass, access=[public,static]"));
// Test inner of inner class
log.mLog.clear();
reader = new ClassReader(ClassWithPrivateInnerClass.class.getName());
reader.accept(adapter, 0);
assertTrue(log.mLog.contains("[visitInnerClass] - " +
"name=com/android/tools/layoutlib/create" +
"/PromoteClassClassAdapterTest$ClassWithPrivateInnerClass$InnerPrivateClass, " +
"outerName=com/android/tools/layoutlib/create" +
"/PromoteClassClassAdapterTest$ClassWithPrivateInnerClass, " +
"innerName=InnerPrivateClass, access=[public]"));
}
@Test
public void testProtectedClassPromotion() throws IOException {
ClassReader reader = new ClassReader(PackageProtectedClass.class.getName());
LoggingClassVisitor log = new LoggingClassVisitor();
PromoteClassClassAdapter adapter = new PromoteClassClassAdapter(log, Set.of(
PackageProtectedClass.class.getName()));
reader.accept(adapter, 0);
assertTrue(log.mLog.contains("[visit] - version=55, access=[public], " +
"name=com/android/tools/layoutlib/create/PackageProtectedClass, signature=null, " +
"superName=java/lang/Object, interfaces=[]"));
}
}
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