com.claritysys.jvm.classfile

Class CfField

java.lang.Object

com.claritysys.jvm.classfile.CfEntry

com.claritysys.jvm.classfile.CfFieldOrMethod

com.claritysys.jvm.classfile.CfField

All Implemented Interfaces:

AttributeHandler

public class CfField
extends CfFieldOrMethod
implements AttributeHandler

A field declared within a ClassFile.

Fields are organized into a linked list within our ClassFile, rather than an array, to allow for efficient dynamic growth.

Constructor Summary

Constructors

Constructor and Description
CfField(ClassFile classFile)

Method Summary

Methods

Modifier and Type	Method and Description
CpEntry	getConstantValue()
CfField	getNext()
CpRef	getRef() Return a Cp(Method)Ref for invoking this method.
boolean	handleAttribute(java.io.DataInputStream dataIn, java.lang.String name, int length) For fields we must recognize: ConstantValue, Synthetic, Deprecated.
void	read(java.io.DataInputStream dataIn) Read the member from the given stream, overwriting any previous values.
void	setConstantValue(CpEntry constantValue)
void	setNext(CfField next)
void	write(java.io.DataOutput dout) Write the field or method to a stream in JVM classfile format.

Methods inherited from class com.claritysys.jvm.classfile.CfFieldOrMethod

getClassFile, getConstantPool, getDescriptorIndex, getName, getNameIndex, getSignature, isSynthetic, setDescriptorIndex, setNameIndex, setSynthetic

Methods inherited from class com.claritysys.jvm.classfile.CfEntry

getAccessFlags, getAttributeCount, getAttributes, isAbstract, isDeprecated, isFinal, isInterface, isNative, isPrivate, isProtected, isPublic, isStatic, isStrict, isSynchronized, isTransient, isVolatile, setAbstract, setAccessFlags, setAttributes, setDeprecated, setFinal, setInterface, setNative, setPrivate, setProtected, setPublic, setStatic, setStrict, setSynchronized, setTransient, setVolatile

Methods inherited from class java.lang.Object

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

Constructor Detail

CfField

public CfField(ClassFile classFile)

Parameters:

classFile -

Method Detail

getNext

public CfField getNext()

setNext

public void setNext(CfField next)

getConstantValue

public CpEntry getConstantValue()

setConstantValue

public void setConstantValue(CpEntry constantValue)

read

public void read(java.io.DataInputStream dataIn)
          throws java.io.IOException,
                 ClassFileFormatException

Description copied from class: CfFieldOrMethod

Read the member from the given stream, overwriting any previous values.

Subclasses must override this method, first invoking this one, and then processing attributes.

  field_info {
          u2 access_flags;
          u2 name_index;
          u2 descriptor_index;
          u2 attributes_count;
          attribute_info attributes[attributes_count];
 }

  method_info {
      u2 access_flags;
            u2 name_index;
            u2 descriptor_index;
            u2 attributes_count;
            attribute_info attributes[attributes_count];
 }
 

Overrides:

read in class CfFieldOrMethod

Throws:

java.io.IOException

ClassFileFormatException

handleAttribute

public boolean handleAttribute(java.io.DataInputStream dataIn,
                      java.lang.String name,
                      int length)
                        throws java.io.IOException,
                               ClassFileFormatException

For fields we must recognize: ConstantValue, Synthetic, Deprecated.

Specified by:

handleAttribute in interface AttributeHandler

Parameters:

dataIn - DataInputStream, positioned to attribute's data.

name - Attribute name from constant pool.

length - Length of info[] in bytes.

Returns:

true if the handler processed it, false if not.

Throws:

java.io.IOException - If an I/O error ocurrs.

ClassFileFormatException - If the attribute was processed but was incorrectly formed.

write

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

Description copied from class: CfFieldOrMethod

Write the field or method to a stream in JVM classfile format.

Subclasses must override this and extend the behavior by writing the attribute table.

Overrides:

write in class CfFieldOrMethod

Throws:

java.io.IOException

getRef

public CpRef getRef()

Return a Cp(Method)Ref for invoking this method.