package com.github.ipk2015.coding2017.minijvm.cmd;
import com.github.ipk2015.coding2017.minijvm.clz.ClassFile;
import com.github.ipk2015.coding2017.minijvm.constant.ConstantPool;
import com.github.ipk2015.coding2017.minijvm.constant.MethodRefInfo;
import com.github.ipk2015.coding2017.minijvm.engine.ExecutionResult;
import com.github.ipk2015.coding2017.minijvm.engine.MethodArea;
import com.github.ipk2015.coding2017.minijvm.engine.StackFrame;
import com.github.ipk2015.coding2017.minijvm.method.Method;
public class InvokeSpecialCmd extends TwoOperandCmd {
public InvokeSpecialCmd(ClassFile clzFile,String opCode) {
super(clzFile,opCode);
}
@Override
public String toString(ConstantPool pool) {
return super.getOperandAsMethod(pool);
}
@Override
public void execute(StackFrame frame, ExecutionResult result) {
MethodRefInfo methodRefInfo = (MethodRefInfo)this.getConstantInfo(this.getIndex());
// 我们不用实现jang.lang.Object 的init方法
if(methodRefInfo.getClassName().equals("java/lang/Object")
&& methodRefInfo.getMethodName().equals("<init>")){
return ;
}
Method method = MethodArea.getInstance().getMethod(methodRefInfo);
result.setNextAction(ExecutionResult.PAUSE_AND_RUN_NEW_FRAME);
result.setNextMethod(method);
}
}