58 lines
1.5 KiB
C#
58 lines
1.5 KiB
C#
|
using System.Collections.Generic;
|
||
|
|
|
||
|
|
namespace Unity.VisualScripting
|
||
|
|
{
|
||
|
|
[Analyser(typeof(IState))]
|
||
|
|
public class StateAnalyser<TState> : Analyser<TState, StateAnalysis>
|
||
|
|
where TState : class, IState
|
||
|
|
{
|
||
|
|
public StateAnalyser(GraphReference reference, TState target) : base(reference, target) { }
|
||
|
|
|
||
|
|
public TState state => target;
|
||
|
|
|
||
|
|
[Assigns]
|
||
|
|
protected virtual bool IsEntered()
|
||
|
|
{
|
||
|
|
using (var recursion = Recursion.New(1))
|
||
|
|
{
|
||
|
|
return IsEntered(state, recursion);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
[Assigns]
|
||
|
|
protected virtual IEnumerable<Warning> Warnings()
|
||
|
|
{
|
||
|
|
if (!IsEntered())
|
||
|
|
{
|
||
|
|
yield return Warning.Info("State is never entered.");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private bool IsEntered(IState state, Recursion recursion)
|
||
|
|
{
|
||
|
|
if (state.isStart)
|
||
|
|
{
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!recursion?.TryEnter(state) ?? false)
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach (var incomingTransition in state.incomingTransitions)
|
||
|
|
{
|
||
|
|
if (IsEntered(incomingTransition.source, recursion) && incomingTransition.Analysis<StateTransitionAnalysis>(context).isTraversed)
|
||
|
|
{
|
||
|
|
recursion?.Exit(state);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
recursion?.Exit(state);
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|