From: chibash -version 3.24
-
-version 3.23.1 on July 2, 2018
NestHost_attribute
.
+ * It was introduced by JEP-181. See JVMS 4.7.28 for the specification.
*/
public class NestHostAttribute extends AttributeInfo {
/**
@@ -36,4 +53,13 @@ public class NestHostAttribute extends AttributeInfo {
int newHostIndex = getConstPool().copy(hostIndex, newCp, classnames);
return new NestHostAttribute(newCp, newHostIndex);
}
+
+ /**
+ * Returns host_class_index
. The constant pool entry
+ * at this entry is a CONSTANT_Class_info
structure.
+ * @return the value of host_class_index
.
+ */
+ public int hostClassIndex() {
+ return ByteArray.readU16bit(info, 0);
+ }
}
diff --git a/src/main/javassist/bytecode/NestMembersAttribute.java b/src/main/javassist/bytecode/NestMembersAttribute.java
index 679dc28c..6a3023b4 100644
--- a/src/main/javassist/bytecode/NestMembersAttribute.java
+++ b/src/main/javassist/bytecode/NestMembersAttribute.java
@@ -1,3 +1,19 @@
+/*
+ * Javassist, a Java-bytecode translator toolkit.
+ * Copyright (C) 1999- Shigeru Chiba. All Rights Reserved.
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. Alternatively, the contents of this file may be used under
+ * the terms of the GNU Lesser General Public License Version 2.1 or later,
+ * or the Apache License Version 2.0.
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ */
+
package javassist.bytecode;
import java.io.DataInputStream;
@@ -6,6 +22,7 @@ import java.util.Map;
/**
* NestMembers_attribute
.
+ * It was introduced by JEP-181. See JVMS 4.7.29 for the specification.
*/
public class NestMembersAttribute extends AttributeInfo {
/**
@@ -46,4 +63,24 @@ public class NestMembersAttribute extends AttributeInfo {
return new NestMembersAttribute(newCp, dest);
}
+
+ /**
+ * Returns number_of_classes
.
+ * @return the number of the classes recorded in this attribute.
+ */
+ public int numberOfClasses() {
+ return ByteArray.readU16bit(info, 0);
+ }
+
+ /** Returns classes[index]
.
+ *
+ * @param index the index into classes
.
+ * @return the value at the given index in the classes
array.
+ * It is an index into the constant pool.
+ * The constant pool entry at the returned index is a
+ * CONSTANT_Class_info
structure.
+ */
+ public int memberClass(int index) {
+ return ByteArray.readU16bit(info, index * 2 + 2);
+ }
}
diff --git a/src/test/javassist/JvstTest5.java b/src/test/javassist/JvstTest5.java
index 6f6eb075..b0cbbcca 100644
--- a/src/test/javassist/JvstTest5.java
+++ b/src/test/javassist/JvstTest5.java
@@ -9,6 +9,8 @@ import javassist.bytecode.AttributeInfo;
import javassist.bytecode.ClassFile;
import javassist.bytecode.ConstPool;
import javassist.bytecode.InnerClassesAttribute;
+import javassist.bytecode.NestHostAttribute;
+import javassist.bytecode.NestMembersAttribute;
import javassist.expr.ExprEditor;
import javassist.expr.Handler;
import javassist.expr.MethodCall;
@@ -416,4 +418,26 @@ public class JvstTest5 extends JvstTestRoot {
Object obj = make(cc.getName());
assertEquals(1, invoke(obj, "test"));
}
+
+ public void testNestHostAttribute() throws Exception {
+ CtClass cc = sloader.get("test5.NestHost$Foo");
+ ClassFile cf = cc.getClassFile();
+ NestHostAttribute attr = (NestHostAttribute)cf.getAttribute(NestHostAttribute.tag);
+ assertEquals(test5.NestHost.class.getName(),
+ cf.getConstPool().getClassInfo(attr.hostClassIndex()));
+ }
+
+ public void testNestMembersAttribute() throws Exception {
+ CtClass cc = sloader.get("test5.NestHost");
+ ClassFile cf = cc.getClassFile();
+ NestMembersAttribute attr = (NestMembersAttribute)cf.getAttribute(NestMembersAttribute.tag);
+ assertEquals(2, attr.numberOfClasses());
+ String[] names = new String[2];
+ for (int i = 0; i < 2; i++)
+ names[i] = cf.getConstPool().getClassInfo(attr.memberClass(i));
+
+ assertFalse(names[0].equals(names[1]));
+ assertTrue(names[0].equals("test5.NestHost$Foo") || names[0].equals("test5.NestHost$Bar"));
+ assertTrue(names[1].equals("test5.NestHost$Foo") || names[1].equals("test5.NestHost$Bar"));
+ }
}