org.objectweb.asm.util
public class ASMifierClassVisitor extends PrintClassVisitor
where Hello is defined by:import org.objectweb.asm.*; import java.io.FileOutputStream; public class Dump implements Constants { public static void main (String[] args) throws Exception { ClassWriter cw = new ClassWriter(false); CodeVisitor cv; cw.visit(ACC_PUBLIC + ACC_SUPER, "Hello", "java/lang/Object", null, "Hello.java"); { cv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null); cv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"); cv.visitLdcInsn("hello"); cv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V"); cv.visitInsn(RETURN); cv.visitMaxs(2, 1); } { cv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); cv.visitVarInsn(ALOAD, 0); cv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V"); cv.visitInsn(RETURN); cv.visitMaxs(1, 1); } cw.visitEnd(); FileOutputStream os = new FileOutputStream("Dumped.class"); os.write(cw.toByteArray()); os.close(); } }
public class Hello { public static void main (String[] args) { System.out.println("hello"); } }
Constructor Summary | |
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ASMifierClassVisitor(PrintWriter pw)
Constructs a new {@link ASMifierClassVisitor} object.
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Method Summary | |
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static void | main(String[] args)
Prints the ASM source code to generate the given class to the standard
output.
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void | visit(int version, int access, String name, String superName, String[] interfaces, String sourceFile) |
void | visitAttribute(Attribute attr) |
void | visitEnd() |
void | visitField(int access, String name, String desc, Object value, Attribute attrs) |
void | visitInnerClass(String name, String outerName, String innerName, int access) |
CodeVisitor | visitMethod(int access, String name, String desc, String[] exceptions, Attribute attrs) |
Parameters: pw the print writer to be used to print the class.
Usage: ASMifierClassVisitor [-debug] <fully qualified class name or class file name>
Parameters: args the command line arguments.
Throws: Exception if the class cannot be found, or if an IO exception occurs.