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using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp.Scripting;
using Microsoft.CodeAnalysis.Scripting;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace Tango.Scripting
{
public class ScriptEngine
{
private CancellationTokenSource _cancaller;
private OnExecuteParameters _onExecuteParameters;
public List<Type> ReferencedAssemblies { get; private set; }
/// <summary>
/// Initializes a new instance of the <see cref="ScriptEngine"/> class.
/// </summary>
/// <param name="parameters">The parameters.</param>
public ScriptEngine(OnExecuteParameters parameters)
{
_onExecuteParameters = parameters;
ReferencedAssemblies = new List<Type>();
}
/// <summary>
/// Runs the specified code.
/// </summary>
/// <param name="code">The code.</param>
/// <returns></returns>
public async Task Run(String code)
{
//My References.
var options = ScriptOptions.Default;
//External References.
//foreach (var r in item.References)
//{
// options = options.AddReferences(r.FilePath);
//}
//My Assemblies.
options = options.AddReferences(typeof(Form).Assembly.Location);
options = options.AddReferences(typeof(Enumerable).Assembly.Location);
options = options.AddReferences(typeof(ScriptEngine).Assembly.Location);
foreach (var asm in ReferencedAssemblies)
{
options = options.AddReferences(asm.Assembly.Location);
}
//Imports.
options = options.AddImports(
"System",
"System.Collections.Generic",
"System.Linq",
"System.Text",
"System.Diagnostics",
"System.Windows.Forms"
);
String methodParameters = String.Join(", ", _onExecuteParameters.GetType().GetFields(BindingFlags.Public | BindingFlags.Instance).Select(x => x.Name));
_cancaller = new CancellationTokenSource();
await CSharpScript.RunAsync(
code +
Environment.NewLine +
Environment.NewLine +
"await Task.Factory.StartNew(() => { OnExecute(" + methodParameters + "); });", options: options, globals: _onExecuteParameters, cancellationToken: _cancaller.Token);
}
/// <summary>
/// Stops this instance.
/// </summary>
public void Stop()
{
_cancaller.Cancel();
}
}
}
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