org.eclipse.persistence.internal.libraries.asm.commons

Class StaticInitMerger

java.lang.Object

org.eclipse.persistence.internal.libraries.asm.ClassVisitor

org.eclipse.persistence.internal.libraries.asm.commons.StaticInitMerger

public class StaticInitMerger
extends ClassVisitor

A ClassVisitor that merges <clinit> methods into a single one. All the existing <clinit> methods are renamed, and a new one is created, which calls all the renamed methods.

Author:

Eric Bruneton

Field Summary

Fields inherited from class org.eclipse.persistence.internal.libraries.asm.ClassVisitor

api, cv

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	StaticInitMerger(int api, java.lang.String prefix, ClassVisitor classVisitor) Constructs a new StaticInitMerger.
	StaticInitMerger(java.lang.String prefix, ClassVisitor classVisitor) Constructs a new StaticInitMerger.

Method Summary

Modifier and Type	Method and Description
void	visit(int version, int access, java.lang.String name, java.lang.String signature, java.lang.String superName, java.lang.String[] interfaces) Visits the header of the class.
void	visitEnd() Visits the end of the class.
MethodVisitor	visitMethod(int access, java.lang.String name, java.lang.String descriptor, java.lang.String signature, java.lang.String[] exceptions) Visits a method of the class.

Methods inherited from class org.eclipse.persistence.internal.libraries.asm.ClassVisitor

visitAnnotation, visitAttribute, visitField, visitInnerClass, 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

StaticInitMerger

public StaticInitMerger(java.lang.String prefix,
                        ClassVisitor classVisitor)

Constructs a new StaticInitMerger. Subclasses must not use this constructor. Instead, they must use the StaticInitMerger(int, String, ClassVisitor) version.

Parameters:

prefix - the prefix to use to rename the existing <clinit> methods.

classVisitor - the class visitor to which this visitor must delegate method calls. May be null.

StaticInitMerger

protected StaticInitMerger(int api,
                           java.lang.String prefix,
                           ClassVisitor classVisitor)

Constructs a new StaticInitMerger.

Parameters:

api - the ASM API version implemented by this visitor. Must be one of Opcodes.ASM4, Opcodes.ASM5, Opcodes.ASM6, Opcodes.ASM7, Opcodes.ASM8 or Opcodes.ASM9.

prefix - the prefix to use to rename the existing <clinit> methods.

classVisitor - the class visitor to which this visitor must delegate method calls. May be null.

Method Detail

visit

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

Description copied from class: ClassVisitor

Visits the header of the class.

Overrides:

visit in class ClassVisitor

Parameters:

version - the class version. The minor version is stored in the 16 most significant bits, and the major version in the 16 least significant bits.

access - the class's access flags (see Opcodes). This parameter also indicates if the class is deprecated Opcodes.ACC_DEPRECATED or a record Opcodes.ACC_RECORD.

name - the internal name of the class (see Type.getInternalName()).

signature - the signature of this class. May be null if the class is not a generic one, and does not extend or implement generic classes or interfaces.

superName - the internal of name of the super class (see Type.getInternalName()). For interfaces, the super class is Object. May be null, but only for the Object class.

interfaces - the internal names of the class's interfaces (see Type.getInternalName()). May be null.

visitMethod

public MethodVisitor visitMethod(int access,
                                 java.lang.String name,
                                 java.lang.String descriptor,
                                 java.lang.String signature,
                                 java.lang.String[] exceptions)

Description copied from class: ClassVisitor

Visits a method of the class. This method must return a new MethodVisitor instance (or null) each time it is called, i.e., it should not return a previously returned visitor.

Overrides:

visitMethod in class ClassVisitor

Parameters:

access - the method's access flags (see Opcodes). This parameter also indicates if the method is synthetic and/or deprecated.

name - the method's name.

descriptor - the method's descriptor (see Type).

signature - the method's signature. May be null if the method parameters, return type and exceptions do not use generic types.

exceptions - the internal names of the method's exception classes (see Type.getInternalName()). May be null.

Returns:

an object to visit the byte code of the method, or null if this class visitor is not interested in visiting the code of this method.

visitEnd

public void visitEnd()

Description copied from class: ClassVisitor

Visits the end of the class. This method, which is the last one to be called, is used to inform the visitor that all the fields and methods of the class have been visited.

Overrides:

visitEnd in class ClassVisitor