org.apache.drill.exec.compile

Class InnerClassAccessStripper

java.lang.Object

org.objectweb.asm.ClassVisitor

org.apache.drill.exec.compile.InnerClassAccessStripper

public class InnerClassAccessStripper
extends org.objectweb.asm.ClassVisitor

An ASM ClassVisitor that strips class the access bits that are only possible on inner classes (ACC_PROTECTED, ACC_PRIVATE, and ACC_FINAL). These bits are only stripped from the class' visit() call if the class' name contains a '$'.

This visitor is meant to be used on classes that will undergo validation with CheckClassAdapter. CheckClassAdapter assumes it will only be called on non-inner classes, and throws an IllegalArgumentException if the class is protected, private, or final. However, once classes are compiled, they appear in their class files alone, and these options may be present, with no way for an outside observer to tell if they were originally inner classes.

Field Summary

Fields inherited from class org.objectweb.asm.ClassVisitor

api, cv

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
int	getOriginalAccess() Return the original class' access bits.
void	visit(int version, int access, String name, String signature, String superName, String[] interfaces)

Methods inherited from class org.objectweb.asm.ClassVisitor

visitAnnotation, visitAttribute, visitEnd, visitField, visitInnerClass, visitMethod, visitModule, visitNestHost, visitNestMember, visitOuterClass, visitPermittedSubclass, visitRecordComponent, visitSource, visitTypeAnnotation

Methods inherited from class java.lang.Object

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

Constructor Detail

InnerClassAccessStripper

public InnerClassAccessStripper(int api)

See ClassVisitor(int).

InnerClassAccessStripper

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

See ClassVisitor(int, ClassVisitor).

Method Detail

getOriginalAccess

public int getOriginalAccess()

Return the original class' access bits.

This may only be called after ClassVisitor.visit(int, int, String, String, String, String[]) has been called; that's where the bits are stripped and captured.

Returns:

the original class bits

Throws:

IllegalStateException - if visit() hasn't been called yet

visit

public void visit(int version,
                  int access,
                  String name,
                  String signature,
                  String superName,
                  String[] interfaces)

Overrides:

visit in class org.objectweb.asm.ClassVisitor