package com.github.HarryHook.coding2017.jvm.cmd;
import com.github.HarryHook.coding2017.jvm.clz.ClassFile;
import com.github.HarryHook.coding2017.jvm.constant.ConstantPool;
import com.github.HarryHook.coding2017.jvm.constant.MethodRefInfo;
import com.github.HarryHook.coding2017.jvm.engine.ExecutionResult;
import com.github.HarryHook.coding2017.jvm.engine.MethodArea;
import com.github.HarryHook.coding2017.jvm.engine.StackFrame;
import com.github.HarryHook.coding2017.jvm.method.Method;
public class InvokeSpecialCmd extends TwoOperandCmd {
public InvokeSpecialCmd(ClassFile clzFile, String opCode) {
super(clzFile, opCode);
}
@Override
public String toString() {
return super.getOperandAsMethod();
}
@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 nextMethod = MethodArea.getInstance().getMethod(methodRefInfo);
result.setNextAction(ExecutionResult.PAUSE_AND_RUN_NEW_FRAME);
result.setNextMethod(nextMethod);
}
}