请问下老师关于状态机的代码

Question

public void translation(string name)

{

State target = this.states_[name] as State;//target state

if (target == null)//if no target return!

{

return;

}

//if current, reset

if(target == this.currState_[this.currState_.Count-1])

{

target.over();

target.start();

return;

}//如果是当前状态机，从置当前状态机

State publicState = null;

ArrayList stateList = new ArrayList();

State tempState = target;

string fatherName = tempState.fatherName;

//do loop 

while(tempState != null)

{

//reiterator current list

for(var i = this.currState_.Count -1; i >= 0; i--)

{

State state = this.currState_[i] as State;

//if has public 

if(state == tempState)

{

publicState = state;

break;

}

}

//end

if(publicState != null)

{ break;}

//else push state_list

stateList.Insert(0, tempState);

//state_list.unshift(temp_state);

if(fatherName != "")

{

tempState = this.states_[fatherName] as State;

fatherName = tempState.fatherName;

}

else

{

tempState = null;

}

}

//if no public return

if (publicState == null){

return;

}

ArrayList newCurrState = new ArrayList();

bool under = true;

//-- 析构状态

for(int i2 = this.currState_.Count -1; i2>=0; --i2)

{

State state2 = this.currState_[i2] as State;

if(state2 == publicState)

{

under = false;

}

if(under){

state2.over();

}

else{

newCurrState.Insert(0, state2);

}

}

//-- 构建状态

for(int i3 = 0; i3 < stateList.Count; ++i3){

State state3 = stateList[i3] as State;

state3.start();

newCurrState.Add(state3);

}

this.currState_ = newCurrState;

}

我看不懂这段代码。能提示下吗？