Class BCELifier

java.lang.Object

org.apache.bcel.classfile.EmptyVisitor

org.apache.bcel.util.BCELifier

All Implemented Interfaces:

Visitor

public class BCELifier
extends EmptyVisitor

This class takes a given JavaClass object and converts it to a Java program that creates that very class using BCEL. This gives new users of BCEL a useful example showing how things are done with BCEL. It does not cover all features of BCEL, but tries to mimic hand-written code as close as possible.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	BCELifier.FLAGS	Enum corresponding to flag source.

Constructor Summary

Constructors

Constructor	Description
BCELifier(JavaClass clazz, OutputStream out)	Constructs a new instance.

Method Summary

Modifier and Type	Method	Description
static void	main(String[] argv)	Default main method.
static String	printFlags(int flags, BCELifier.FLAGS location)	Return a string with the flag settings
void	start()	Start Java code generation
void	visitField(Field field)	Visits a Field.
void	visitJavaClass(JavaClass clazz)	Visits a JavaClass.
void	visitMethod(Method method)	Visits a Method.
void	visitStackMap(StackMap stackMap)	Visits a StackMap attribute.
void	visitStackMapEntry(StackMapEntry stackMapEntry)	Visits a StackMapEntry.
void	visitStackMapType(StackMapType stackMapType)	Visits a StackMapType object.

Methods inherited from class EmptyVisitor

visitAnnotation, visitAnnotationDefault, visitAnnotationEntry, visitBootstrapMethods, visitCode, visitCodeException, visitConstantClass, visitConstantDouble, visitConstantDynamic, visitConstantFieldref, visitConstantFloat, visitConstantInteger, visitConstantInterfaceMethodref, visitConstantInvokeDynamic, visitConstantLong, visitConstantMethodHandle, visitConstantMethodref, visitConstantMethodType, visitConstantModule, visitConstantNameAndType, visitConstantPackage, visitConstantPool, visitConstantString, visitConstantUtf8, visitConstantValue, visitDeprecated, visitEnclosingMethod, visitExceptionTable, visitInnerClass, visitInnerClasses, visitLineNumber, visitLineNumberTable, visitLocalVariable, visitLocalVariableTable, visitLocalVariableTypeTable, visitMethodParameter, visitMethodParameters, visitModule, visitModuleExports, visitModuleMainClass, visitModuleOpens, visitModulePackages, visitModuleProvides, visitModuleRequires, visitNestHost, visitNestMembers, visitParameterAnnotation, visitParameterAnnotationEntry, visitSignature, visitSourceFile, visitSynthetic, visitUnknown

Methods inherited from class Object

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

Methods inherited from interface Visitor

visitRecord, visitRecordComponent

Constructor Details

BCELifier

public BCELifier(JavaClass clazz,
 OutputStream out)

Constructs a new instance.

Parameters:

clazz - Java class to "decompile".

out - where to print the Java program in UTF-8.

Method Details

main

public static void main(String[] argv)
                 throws Exception

Default main method.

Parameters:

argv - command line arguments.

Throws:

Exception - if an error occurs.

printFlags

public static String printFlags(int flags,
 BCELifier.FLAGS location)

Return a string with the flag settings

Parameters:

flags - the flags field to interpret.

location - the item type.

Returns:

the formatted string.

Since:

6.0 made public

start

public void start()

Start Java code generation

visitField

public void visitField(Field field)

Description copied from interface: Visitor

Visits a Field.

Specified by:

visitField in interface Visitor

Overrides:

visitField in class EmptyVisitor

Parameters:

field - the field.

visitJavaClass

public void visitJavaClass(JavaClass clazz)

Description copied from interface: Visitor

Visits a JavaClass.

Specified by:

visitJavaClass in interface Visitor

Overrides:

visitJavaClass in class EmptyVisitor

Parameters:

clazz - the class.

visitMethod

public void visitMethod(Method method)

Description copied from interface: Visitor

Visits a Method.

Specified by:

visitMethod in interface Visitor

Overrides:

visitMethod in class EmptyVisitor

Parameters:

method - the method.

visitStackMap

public void visitStackMap(StackMap stackMap)

Description copied from interface: Visitor

Visits a StackMap attribute.

Specified by:

visitStackMap in interface Visitor

Overrides:

visitStackMap in class EmptyVisitor

Parameters:

stackMap - the attribute.

visitStackMapEntry

public void visitStackMapEntry(StackMapEntry stackMapEntry)

Description copied from interface: Visitor

Visits a StackMapEntry.

Specified by:

visitStackMapEntry in interface Visitor

Overrides:

visitStackMapEntry in class EmptyVisitor

Parameters:

stackMapEntry - the entry.

visitStackMapType

public void visitStackMapType(StackMapType stackMapType)

Visits a StackMapType object.

Specified by:

visitStackMapType in interface Visitor

Overrides:

visitStackMapType in class EmptyVisitor

Parameters:

stackMapType - object to visit.

Since:

6.7.1