org.glassfish.deployment.common.NodeInfo Maven / Gradle / Ivy
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/*
* Copyright (c) 2009, 2018 Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2023 Contributors to the Eclipse Foundation.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.deployment.common;
import org.objectweb.asm.*;
import java.util.List;
import java.util.ArrayList;
import java.util.Set;
import java.util.HashSet;
import static org.objectweb.asm.Opcodes.ASM9;
/**
* A class that maintains information about a class
*
* @author Mahesh Kannan
*
*/
class NodeInfo
extends ClassVisitor {
private int nodeId;
private int access;
private String className;
private String superClassName;
private List classLevelAnnotations;
private String[] interfaces;
private boolean parsed;
private Set directSubClasses;
private Set directImplementors;
private Set directSubClassesNodeInfos;
private Set directImplementorsNodeInfos;
private int classType;
private String classTypeAsString;
private static final List EMPTY_STRING_LIST = new ArrayList(0);
private static final Set EMPTY_NODEINFO_SET = new HashSet();
public NodeInfo(int api) {
super(api);
}
NodeInfo(byte[] classData) {
super(ASM9);
ClassReader cr = new ClassReader(classData);
cr.accept(this, ClassReader.SKIP_CODE);
}
void load(byte[] classData) {
ClassReader cr = new ClassReader(classData);
cr.accept(this, ClassReader.SKIP_CODE);
}
void markAsAnnotaionType() {
if (! parsed) {
classType = Opcodes.ACC_ANNOTATION;
} else {
throw new IllegalStateException("Cannot mark as AnnotationType. "
+ "Already marked as " + classTypeAsString);
}
}
void markAsClassType() {
if (! parsed) {
classType = 0;
} else {
throw new IllegalStateException("Cannot mark as Class Type. "
+ "Already marked as " + classTypeAsString);
}
}
void markAsInterfaceType() {
if (! parsed) {
classType = Opcodes.ACC_INTERFACE;
} else {
throw new IllegalStateException("Cannot mark as Interface Type. "
+ "Already marked as " + classTypeAsString);
}
}
void markAsEnumType() {
if (! parsed) {
classType = Opcodes.ACC_ENUM;
} else {
throw new IllegalStateException("Cannot mark as Enum Type. "
+ "Already marked as " + classTypeAsString);
}
}
NodeInfo(String className) {
super(ASM9);
this.className = className;
}
int getNodeId() {
return nodeId;
}
void setNodeId(int nodeId) {
this.nodeId = nodeId;
}
String getClassName() {
return className;
}
String getSuperClassName() {
return superClassName;
}
List getClassLevelAnnotations() {
return classLevelAnnotations == null ? EMPTY_STRING_LIST : classLevelAnnotations;
}
String[] getInterfaces() {
return interfaces == null ? new String[0] : interfaces;
}
void addDirectSubClass(NodeInfo ni) {
String subClass = ni.getClassName();
if (directSubClasses == null) {
directSubClasses = new HashSet();
directSubClassesNodeInfos = new HashSet();
}
directSubClasses.add(subClass);
directSubClassesNodeInfos.add(ni);
}
void addDirectImplementor( NodeInfo ni) {
String implementor = ni.getClassName();
if (directImplementors == null) {
directImplementors = new HashSet();
directImplementorsNodeInfos = new HashSet();
}
directImplementors.add(implementor);
directImplementorsNodeInfos.add(ni);
}
Set getDirectImplementors() {
return directImplementorsNodeInfos == null ? EMPTY_NODEINFO_SET : directImplementorsNodeInfos;
}
Set getDirectSubClass() {
return directSubClassesNodeInfos == null ? EMPTY_NODEINFO_SET : directSubClassesNodeInfos;
}
boolean isInterface() {
return classType == Opcodes.ACC_INTERFACE;
}
boolean isAnnotation() {
return classType == Opcodes.ACC_ANNOTATION;
}
boolean isClass() {
return classType == 0;
}
@Override
public void visit(int version, int access, String className, String signature,
String superName, String[] interfaces) {
if ((this.className != null) && (! this.className.equals(className))) {
throw new IllegalStateException("Internal error: " + className + " != " + this.className);
}
this.access = access;
this.className = className;
this.superClassName = superName;
this.interfaces = interfaces == null ? new String[0] : interfaces;
determineClassType();
}
public void determineClassType() {
if ((access & Opcodes.ACC_ANNOTATION) != 0) {
classType = Opcodes.ACC_ANNOTATION;
classTypeAsString = "ANNOTATION";
} else if ((access & Opcodes.ACC_INTERFACE) != 0) {
classType = Opcodes.ACC_INTERFACE;
classTypeAsString = "INTERFACE";
} else if ((access & Opcodes.ACC_ENUM) != 0) {
classType = Opcodes.ACC_ENUM;
classTypeAsString = "ENUM";
} else {
classType = 0;
classTypeAsString = "CLASS";
}
}
public String getClassTypeAsString() {
return classTypeAsString;
}
@Override
public void visitSource(String s, String s1) {
}
@Override
public void visitOuterClass(String s, String s1, String s2) {
}
@Override
public AnnotationVisitor visitAnnotation(String s, boolean b) {
if (classLevelAnnotations == null) {
classLevelAnnotations = new ArrayList(2);
}
int len = s.length();
s = s.substring(1, len-1);
classLevelAnnotations.add(s);
return null;
}
@Override
public void visitAttribute(Attribute attribute) {
}
@Override
public void visitInnerClass(String s, String s1, String s2, int i) {
}
@Override
public FieldVisitor visitField(int i, String s, String s1, String s2, Object o) {
return null;
}
@Override
public MethodVisitor visitMethod(int i, String s, String s1, String s2, String[] strings) {
return null;
}
public boolean isParsed() {
return parsed;
}
@Override
public void visitEnd() {
parsed = true;
}
public String toString() {
StringBuilder sb = new StringBuilder(className).append(": ");
if (classLevelAnnotations != null) {
for (String ann : classLevelAnnotations) {
sb.append("\n @").append(ann).append(" ");
}
}
sb.append(className).append(":");
if (superClassName != null) {
sb.append(" -> ").append(superClassName);
}
if (interfaces != null) {
String delim = " & ";
for (String inter : interfaces) {
sb.append(delim).append(inter);
delim = ", ";
}
}
if (directSubClasses != null) {
for (String sub : directSubClasses) {
sb.append("\n\tdirect subclass => ").append(sub);
}
}
if (directImplementors != null) {
for (String impl : directImplementors) {
sb.append("\n\tdirect implementor => ").append(impl);
}
}
sb.append("\n**********************");
return sb.toString();
}
}