Package com.yworks.yguard.obf.classfile

Class CpInfo

java.lang.Object

com.yworks.yguard.obf.classfile.CpInfo

All Implemented Interfaces:

ClassConstants

Direct Known Subclasses:

AbstractDynamicCpInfo, AbstractTypeCpInfo, DoubleCpInfo, FloatCpInfo, IntegerCpInfo, LongCpInfo, MethodHandleCpInfo, MethodTypeCpInfo, NameAndTypeCpInfo, RefCpInfo, StringCpInfo, Utf8CpInfo

public abstract class CpInfo
extends java.lang.Object
implements ClassConstants

Representation of an entry in the ConstantPool. Specific types of entry have their representations sub-classed from this.

Field Summary

Fields

Modifier and Type	Field	Description
protected int	refCount	The Ref count.

Fields inherited from interface com.yworks.yguard.obf.classfile.ClassConstants

ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_VARARGS, ACC_VOLATILE, ATTR_AnnotationDefault, ATTR_BootstrapMethods, ATTR_Bridge, ATTR_Code, ATTR_ConstantValue, ATTR_Deprecated, ATTR_EnclosingMethod, ATTR_Enum, ATTR_Exceptions, ATTR_InnerClasses, ATTR_LineNumberTable, ATTR_LocalVariableTable, ATTR_LocalVariableTypeTable, ATTR_MethodParameters, ATTR_Module, ATTR_ModuleMainClass, ATTR_ModulePackages, ATTR_NestHost, ATTR_NestMembers, ATTR_PermittedSubclasses, ATTR_Record, ATTR_RuntimeInvisibleAnnotations, ATTR_RuntimeInvisibleParameterAnnotations, ATTR_RuntimeInvisibleTypeAnnotations, ATTR_RuntimeVisibleAnnotations, ATTR_RuntimeVisibleParameterAnnotations, ATTR_RuntimeVisibleTypeAnnotations, ATTR_Signature, ATTR_SourceDebug, ATTR_SourceDebugExtension, ATTR_SourceFile, ATTR_StackMapTable, ATTR_Synthetic, ATTR_Unknown, ATTR_Varargs, CONSTANT_Class, CONSTANT_Double, CONSTANT_Dynamic, CONSTANT_Fieldref, CONSTANT_Float, CONSTANT_Integer, CONSTANT_InterfaceMethodref, CONSTANT_InvokeDynamic, CONSTANT_Long, CONSTANT_MethodHandle, CONSTANT_Methodref, CONSTANT_MethodType, CONSTANT_Module, CONSTANT_NameAndType, CONSTANT_Package, CONSTANT_String, CONSTANT_Utf8, KNOWN_ATTRS, MAGIC, MAJOR_VERSION, MINOR_VERSION_MAX, REF_getField, REF_getStatic, REF_invokeInterface, REF_invokeSpecial, REF_invokeStatic, REF_invokeVirtual, REF_newInvokeSpecial, REF_putField, REF_putStatic, REQUIRED_ATTRS

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	CpInfo(int tag)	Instantiates a new Cp info.

Method Summary

Modifier and Type	Method	Description
static CpInfo	create(java.io.DataInput din)	Create a new CpInfo from the data passed.
void	decRefCount()	Decrement the reference count.
void	dump(java.io.PrintWriter pw, ClassFile cf, int index)	Dump the content of the class file to the specified file (used for debugging).
int	getRefCount()	Return the reference count.
void	incRefCount()	Increment the reference count.
protected void	markNTRefs(ConstantPool pool)	Check for NameAndType references to constant pool and mark them; over-ride this in sub-classes.
protected void	markUtf8Refs(ConstantPool pool)	Check for Utf8 references to constant pool and mark them; over-ride this in sub-classes.
protected abstract void	readInfo(java.io.DataInput din)	Read the 'info' data following the u1tag byte; over-ride this in sub-classes.
void	resetRefCount()	Reset the reference count to zero.
void	write(java.io.DataOutput dout)	Export the representation to a DataOutput stream.
protected abstract void	writeInfo(java.io.DataOutput dout)	Write the 'info' data following the u1tag byte; over-ride this in sub-classes.

Methods inherited from class java.lang.Object

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

Field Detail

refCount

protected int refCount

The Ref count.

Constructor Detail

CpInfo

protected CpInfo(int tag)

Instantiates a new Cp info.

Parameters:

tag - the tag

Method Detail

create

public static CpInfo create(java.io.DataInput din)
                     throws java.io.IOException

Create a new CpInfo from the data passed.

Parameters:

din - the din

Returns:

the cp info

Throws:

java.io.IOException - if class file is corrupt or incomplete

readInfo

protected abstract void readInfo(java.io.DataInput din)
                          throws java.io.IOException

Read the 'info' data following the u1tag byte; over-ride this in sub-classes.

Parameters:

din - the din

Throws:

java.io.IOException - the io exception

markUtf8Refs

protected void markUtf8Refs(ConstantPool pool)

Check for Utf8 references to constant pool and mark them; over-ride this in sub-classes.

Parameters:

pool - the pool

markNTRefs

protected void markNTRefs(ConstantPool pool)

Check for NameAndType references to constant pool and mark them; over-ride this in sub-classes.

Parameters:

pool - the pool

write

public void write(java.io.DataOutput dout)
           throws java.io.IOException

Export the representation to a DataOutput stream.

Parameters:

dout - the dout

Throws:

java.io.IOException - the io exception

writeInfo

protected abstract void writeInfo(java.io.DataOutput dout)
                           throws java.io.IOException

Write the 'info' data following the u1tag byte; over-ride this in sub-classes.

Parameters:

dout - the dout

Throws:

java.io.IOException - the io exception

getRefCount

public int getRefCount()

Return the reference count.

Returns:

the ref count

incRefCount

public void incRefCount()

Increment the reference count.

decRefCount

public void decRefCount()

Decrement the reference count.

resetRefCount

public void resetRefCount()

Reset the reference count to zero.

dump

public void dump(java.io.PrintWriter pw,
                 ClassFile cf,
                 int index)

Dump the content of the class file to the specified file (used for debugging).

Parameters:

pw - the pw

cf - the cf

index - the index