org.apache.drill.exec.compile

Class RetargetableClassVisitor

java.lang.Object

org.objectweb.asm.ClassVisitor

org.apache.drill.exec.compile.RetargetableClassVisitor

Direct Known Subclasses:

DrillCheckClassAdapter

public class RetargetableClassVisitor
extends org.objectweb.asm.ClassVisitor

An ASM ClassVisitor that allows for a late-bound delegate.

The ClassVisitor constructor takes an optional ClassVisitor argument to which all calls will be delegated. However, in some circumstances, ClassVisitor derivatives may not be able to specify the delegate until after they have called the ClassVisitor constructor themselves. In other words, they may not be able to specify the delegate until *after* they have called super(). This version of the ClassVisitor will support that via the use of the setDelegate(org.objectweb.asm.ClassVisitor) method.

Field Summary

Fields inherited from class org.objectweb.asm.ClassVisitor

api, cv

Constructor Summary

Constructors

Constructor and Description
RetargetableClassVisitor(int api) See ClassVisitor.ClassVisitor(int).
RetargetableClassVisitor(int api, org.objectweb.asm.ClassVisitor cv) See ClassVisitor.ClassVisitor(int, ClassVisitor).

Method Summary

Methods

Modifier and Type	Method and Description
protected void	setDelegate(org.objectweb.asm.ClassVisitor cv) Set the delegate for this ClassVisitor.

Methods inherited from class org.objectweb.asm.ClassVisitor

visit, visitAnnotation, visitAttribute, visitEnd, visitField, visitInnerClass, visitMethod, visitOuterClass, visitSource, visitTypeAnnotation

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RetargetableClassVisitor

public RetargetableClassVisitor(int api)

See ClassVisitor.ClassVisitor(int).

RetargetableClassVisitor

public RetargetableClassVisitor(int api,
                        org.objectweb.asm.ClassVisitor cv)

See ClassVisitor.ClassVisitor(int, ClassVisitor).

Method Detail

setDelegate

protected void setDelegate(org.objectweb.asm.ClassVisitor cv)

Set the delegate for this ClassVisitor. Must be called before the visitor is used (i.e., before any other methods are called), and only once.

Parameters:

cv - the ClassVisitor to delegate calls to