com.sun.jdo.api.persistence.enhancer.classfile.ClassField Maven / Gradle / Ivy
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package com.sun.jdo.api.persistence.enhancer.classfile;
import java.io.*;
/**
* ClassField models the static and non-static fields of a class within
* a class file.
*/
final public class ClassField extends ClassMember {
/* access flag bit mask - see VMConstants */
private int accessFlags;
/* The name of the field */
private ConstUtf8 fieldName;
/* The type signature of the field */
private ConstUtf8 fieldSignature;
/* The attributes associated with the field */
private AttributeVector fieldAttributes;
/* public accessors */
/**
* Is the field transient?
*/
public boolean isTransient() {
return (accessFlags & ACCTransient) != 0;
}
/**
* Return the access flags for the field - see VMConstants
*/
public int access() {
return accessFlags;
}
/**
* Update the access flags for the field - see VMConstants
*/
public void setAccess(int newFlags) {
accessFlags = newFlags;
}
/**
* Return the name of the field
*/
public ConstUtf8 name() {
return fieldName;
}
/**
* Change the name of the field
*/
public void changeName(ConstUtf8 name) {
fieldName = name;
}
/**
* Return the type signature of the field
*/
public ConstUtf8 signature() {
return fieldSignature;
}
/**
* Change the type signature of the field
*/
public void changeSignature(ConstUtf8 newSig) {
fieldSignature = newSig;
}
/**
* Return the attributes associated with the field
*/
public AttributeVector attributes() {
return fieldAttributes;
}
/**
* Construct a class field object
*/
public ClassField(int accFlags, ConstUtf8 name, ConstUtf8 sig,
AttributeVector field_attrs) {
accessFlags = accFlags;
fieldName = name;
fieldSignature = sig;
fieldAttributes = field_attrs;
}
/* package local methods */
static ClassField read(DataInputStream data, ConstantPool pool)
throws IOException {
ClassField f = null;
int accessFlags = data.readUnsignedShort();
int name_index = data.readUnsignedShort();
int sig_index = data.readUnsignedShort();
AttributeVector fieldAttribs = AttributeVector.readAttributes(data, pool);
f = new ClassField(accessFlags,
(ConstUtf8) pool.constantAt(name_index),
(ConstUtf8) pool.constantAt(sig_index),
fieldAttribs);
return f;
}
void write (DataOutputStream data) throws IOException {
data.writeShort(accessFlags);
data.writeShort(fieldName.getIndex());
data.writeShort(fieldSignature.getIndex());
fieldAttributes.write(data);
}
void print(PrintStream out, int indent) {
ClassPrint.spaces(out, indent);
out.print("'" + fieldName.asString() + "'");//NOI18N
out.print(" sig = " + fieldSignature.asString());//NOI18N
out.print(" access_flags = " + Integer.toString(accessFlags));//NOI18N
out.println(" attributes:");//NOI18N
fieldAttributes.print(out, indent+2);
}
}