package com.coderising.jvm.field;
import com.coderising.jvm.constant.ConstantPool;
import com.coderising.jvm.constant.UTF8Info;
import com.coderising.jvm.loader.ByteCodeIterator;
public class Field {
private int accessFlag;
private int nameIndex;
private int descriptorIndex;
private ConstantPool pool;
public Field(int accessFlag, int nameIndex, int descriptorIndex, ConstantPool pool) {
this.accessFlag = accessFlag;
this.nameIndex = nameIndex;
this.descriptorIndex = descriptorIndex;
this.pool = pool;
}
public String toString() {
String name = ((UTF8Info)pool.getConstantInfo(this.nameIndex)).getValue();
String desc = ((UTF8Info)pool.getConstantInfo(this.descriptorIndex)).getValue();
return name +":"+ desc;
}
public static Field parse(ConstantPool pool, ByteCodeIterator iter){
int accessFlag = iter.nextU2ToInt();
int nameIndex = iter.nextU2ToInt();
int descIndex = iter.nextU2ToInt();
int attribCount = iter.nextU2ToInt();
String name = pool.getUTF8String(nameIndex);
System.out.println("field <" + name + "> attribute count:"+ attribCount);
Field f = new Field(accessFlag, nameIndex, descIndex,pool);
if(attribCount > 0){
throw new RuntimeException("Field Attribute has not been implemented");
}
return f;
}
}