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Update TODO_StateMachine.md

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This commit is contained in:
Zihan Chen
2017-11-13 02:50:57 -08:00
committed by GitHub
parent 843780586f
commit dbb364dd5b
1 changed files with 14 additions and 8 deletions
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TODO_StateMachine.md
+14 -8
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@@ -189,14 +189,14 @@ class Calculator
[cpp:Private]
func <state>Resume(): void
{
var <state>currentResult: ::system::CoroutineResult^ = null;
var <state>previousResult: ::system::CoroutineResult^ = null;
while (true)
{
if (<state>coroutine: is null)
{
if (<state>Result is not null)
if (<state>previousResult is not null)
{
if (<state>Result.Failure is not null)
if (<state>previousResult.Failure is not null)
{
raise <state>Result.Failure;
}
@@ -206,18 +206,24 @@ class Calculator
           if (<state>coroutine.Status != ::system::CoroutineStatus::Stopped)
{
var <state>currentCoroutine = <state>coroutine;
<state>currentCoroutine.Status.Resume(true, <state>result);
if (<state>currentCoroutine.Status == ::system::CoroutineStatus::Waiting)
<state>currentCoroutine.Status.Resume(true, <state>previousResult);
if (<state>coroutine == <state>currentCoroutine)
{
<state>currentResult = new ::system::CoroutineResult^();
break; // wait for input
}
else if (<state>currentCoroutine.Status == ::system::CoroutineStatus::Stopped)
{
// leave a state machine
<state>previousResult = new ::system::CoroutineResult^();
if (<state>currentCoroutine.Failure is not null)
{
<state>currentResult.Failure = <state>currentCoroutine.Failure;
<state>previousResult.Failure = <state>currentCoroutine.Failure;
}
}
else
{
<state>currentResult = null;
// enter a state machine
break;
}
}
       }