package com.coderising.jvm.cmd;
import com.coderising.jvm.clz.ClassFile;
import com.coderising.jvm.constant.ConstantPool;
import com.coderising.jvm.constant.FieldRefInfo;
import com.coderising.jvm.constant.NameAndTypeInfo;
import com.coderising.jvm.engine.ExecutionResult;
import com.coderising.jvm.engine.StackFrame;
public class PutFieldCmd extends TwoOperandCmd{
protected PutFieldCmd(ClassFile clzFile, String opCode) {
super(clzFile, opCode);
}
@Override
public String toString(ConstantPool pool) {
return super.getOperandAsField(pool);
}
public void execute(StackFrame frame, ExecutionResult result){
FieldRefInfo fieldRef = (FieldRefInfo)this.getConstantInfo(this.getIndex());
NameAndTypeInfo nameTypeInfo = (NameAndTypeInfo)this.getConstantInfo(fieldRef.getNameAndTypeIndex());
// example : name
String fieldName = nameTypeInfo.getName();
// example : Ljava/lang/String
String fieldType = nameTypeInfo.getTypeInfo();
}
}