Update TODO_StateMachine.md

2026-03-24 17:03:49 +08:00 · 2017-11-11 04:11:03 -08:00
parent 66fa994e7e
commit 386d764209
1 changed files with 123 additions and 1 deletions
--- a/TODO_StateMachine.md
+++ b/TODO_StateMachine.md
@@ -24,7 +24,7 @@
  - `$pass_input` statement
    - The next `$switch` will use the current input 

-#### Sample
+### Sample
 ```
 class Calculator
 {
@@ -148,3 +148,125 @@ func Main(): string
    return calculator.Value; // "46"
 }
 ```
+
+### Generated
+```
+class Calculator
+{
+    ... // ignored everything before $state_machine
+    
+    enum <state>Input
+    {
+        <state>Invalid = 0,
+        Digit = 1,
+        Dot = 2,
+        Add = 3,
+        Mul = 4,
+        Equal = 5,
+        Clear = 6,
+    }
+    
+    enum <state>State
+    {
+        <state>Start = 0,
+        Digit = 1,
+        Integer = 2,
+        Numver = 3,
+        Calculate = 4,
+    }
+    
+    [cpp:Private]
+    var <state>input: <State>Input = ::Calculator::<state>Input::<state>Invalid;
+    
+    [cpp:Private]
+    var <state>coroutine: ::system::Coroutine^ = null;
+    
+    [cpp:Private]
+    var <statep-Digit>i: int = 0;
+    
+    [cpp:Private]
+    void <state>Resume(): void
+    {
+    }
+    
+    void Digit(i: int): void  { <state>input = ::Calculator::<state>Input::Digit; <statep-Digit>i = i;  <state>Resume(); }
+    void Dot(): void          { <state>input = ::Calculator::<state>Input::Dot;                         <state>Resume(); }
+    void Add(): void          { <state>input = ::Calculator::<state>Input::Add;                         <state>Resume(); }
+    void Mul(): void          { <state>input = ::Calculator::<state>Input::Mul;                         <state>Resume(); }
+    void Equal(): void        { <state>input = ::Calculator::<state>Input::Equal;                       <state>Resume(); }
+    void Clear(): void        { <state>input = ::Calculator::<state>Input::Clear;                       <state>Resume(); }
+    
+    void RunStateMachine(): void
+    {
+    }
+
+    $state_machine
+    {
+        $state Digits()
+        {
+            $switch(pass)
+            {
+                case Digit(i)
+                {
+                    Value = Value & i;
+                    $goto_state Digits();
+                }
+            }
+        }
+
+        $state Integer(newNumber: bool)
+        {
+            $switch(pass)
+            {
+                case Digit(i)
+                {
+                    if (newNumber)
+                    {
+                        Value = i;
+                    }
+                    else
+                    {
+                        Value = Value & i;
+                    }
+                    $goto_state Digits();
+                }
+            }
+        }
+
+        $state Number()
+        {
+            $push_state Integer(true);
+            $switch(pass_and_return)
+            {
+                case Dot()
+                {
+                    Value = Value & ".";
+                }
+            }
+            $push_state Integer(false);
+        }
+
+        $state Calculate()
+        {
+            $push_state Number();
+            $switch
+            {
+                case Add():     {Calculate(); op = "+";}
+                case Mul():     {Calculate(); op = "-";}
+                case Equal():   {Calculate(); op = "=";}
+                case Clear():
+                {
+                    valueFirst = "";
+                    op = "";
+                    Value = "0";
+                }
+            }
+        }
+        
+        $state
+        {
+            $goto_state Calculate();
+        }
+    }
+}
+```