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serein-flow/Serein.Script/ScriptInvokeContext.cs

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using Serein.Library.Api;
namespace Serein.Script
{
public class ScriptInvokeContext : IScriptInvokeContext
{
/// <summary>
/// 脚本使用流程上下文
/// </summary>
/// <param name="flowContext"></param>
public ScriptInvokeContext(IFlowContext flowContext)
{
FlowContext = flowContext;
}
/// <summary>
/// 不使用流程上下文
/// </summary>
public ScriptInvokeContext()
{
}
public IFlowContext FlowContext{ get; }
/// <summary>
/// 定义的变量
/// </summary>
private Dictionary<string, object?> _variables = new Dictionary<string, object?>();
/// <summary>
/// 取消令牌源,用于控制脚本的执行
/// </summary>
private CancellationTokenSource _tokenSource = new CancellationTokenSource();
/// <summary>
/// 是否该退出了
/// </summary>
public bool IsReturn => _tokenSource.IsCancellationRequested;
/// <summary>
/// 是否严格检查 Null 值 (禁止使用 Null
/// </summary>
public bool IsCheckNullValue { get; set; }
/// <summary>
/// 是否需要提前返回(用于脚本中提前结束)
/// </summary>
public bool IsNeedReturn { get; set; }
object IScriptInvokeContext.GetVarValue(string varName)
{
_variables.TryGetValue(varName, out var value);
return value;
}
bool IScriptInvokeContext.SetVarValue(string varName, object? value)
{
if (!_variables.TryAdd(varName, value))
{
_variables[varName] = value;
}
return true;
}
void IScriptInvokeContext.OnExit()
{
// 清理脚本中加载的非托管资源
foreach (var nodeObj in _variables.Values)
{
if (nodeObj is not null)
{
if (typeof(IDisposable).IsAssignableFrom(nodeObj?.GetType()) && nodeObj is IDisposable disposable)
{
disposable?.Dispose();
}
}
else
{
}
}
_tokenSource.Cancel();
_variables.Clear();
}
}
}