/*
* SonarQube Java
* Copyright (C) 2012-2016 SonarSource SA
* mailto:contact AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.java.resolve;
import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.Attribute;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.FieldVisitor;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import java.io.InputStream;
import java.util.Arrays;
import java.util.EnumSet;
public class AsmExample {
enum Flag {
PUBLIC,
PRIVATE,
PROTECTED,
STATIC,
FINAL,
SYNCHRONIZED,
VOLATILE,
TRANSIENT,
NATIVE,
INTERFACE,
ABSTRACT,
STRICTFP,
SYNTHETIC,
ANNOTATION,
ENUM;
@Override
public String toString() {
return name().toLowerCase();
}
}
public static void main(String[] args) throws Exception {
ClassVisitor cv = new ClassVisitor(Opcodes.ASM5) {
@Override
public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
System.out.println("CLASS");
System.out.println("access: " + asFlagSet(access));
System.out.println("name: " + name);
System.out.println("signature: " + signature);
System.out.println("superName: " + superName);
System.out.println("interfaces: " + Arrays.toString(interfaces));
System.out.println();
}
@Override
public void visitSource(String source, String debug) {
System.out.println("SOURCE");
System.out.println();
}
@Override
public void visitOuterClass(String owner, String name, String desc) {
System.out.println("OUTER CLASS");
System.out.println("owner: " + owner);
System.out.println("name: " + name);
System.out.println("desc: " + desc);
System.out.println();
}
@Override
public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
System.out.println("ANNOTATION");
System.out.println("desc: " + desc);
System.out.println("visible: " + visible);
return null;
}
@Override
public void visitAttribute(Attribute attr) {
System.out.println("ATTRIBUTE");
System.out.println();
}
@Override
public void visitInnerClass(String name, String outerName, String innerName, int access) {
System.out.println("INNER CLASS");
System.out.println("access: " + asFlagSet(access));
System.out.println("name: " + name);
System.out.println("outerName: " + outerName);
System.out.println("innerName: " + innerName);
System.out.println();
}
@Override
public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) {
System.out.println("FIELD");
System.out.println("access: " + asFlagSet(access));
System.out.println("name: " + name);
System.out.println("desc: " + desc);
System.out.println("signature: " + desc);
System.out.println();
return null;
}
@Override
public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
System.out.println("METHOD");
System.out.println("access: " + asFlagSet(access));
System.out.println("name: " + name);
System.out.println("desc: " + desc);
System.out.println("signature: " + desc);
System.out.println("exceptions: " + Arrays.toString(exceptions));
System.out.println();
return null;
}
@Override
public void visitEnd() {
System.out.println("END");
}
public EnumSet<Flag> asFlagSet(int flags) {
EnumSet<Flag> result = EnumSet.noneOf(Flag.class);
int mask = 1;
for (int i = 0; i < 15; i++) {
if ((flags & mask) != 0) {
result.add(Flag.values()[i]);
}
mask = mask << 1;
}
return result;
}
};
InputStream in = AsmExample.class.getResourceAsStream("/org/sonar/java/resolve/AsmExample.class");
ClassReader classReader = new ClassReader(in);
classReader.accept(cv, 0);
}
}