1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
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
{
/// <summary>
/// Represents a C# scripting engine capable of executing C# scripts using the Roslyn engine.
/// </summary>
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)
{
var options = CreateOptions();
String methodParameters = CreateMethodParameters();
_cancaller = new CancellationTokenSource();
await CSharpScript.RunAsync(
code +
Environment.NewLine +
Environment.NewLine +
"await Task.Factory.StartNew(() => { OnExecute(" + methodParameters + "); });", options: options, globals: _onExecuteParameters, cancellationToken: _cancaller.Token);
}
public Task<List<CompilerError>> Compile(String code)
{
return Task.Factory.StartNew<List<CompilerError>>(() =>
{
var options = CreateOptions();
String methodParameters = CreateMethodParameters();
_cancaller = new CancellationTokenSource();
var script = CSharpScript.Create(
code +
Environment.NewLine +
Environment.NewLine +
"await Task.Factory.StartNew(() => { OnExecute(" + methodParameters + "); });", options: options, globalsType: _onExecuteParameters.GetType());
var results = script.Compile();
return results.Where(x => x.Severity == DiagnosticSeverity.Error).ToList().Select(x => new CompilerError() { Error = x.ToString() }).ToList();
});
}
private String CreateMethodParameters()
{
return String.Join(", ", _onExecuteParameters.GetType().GetFields(BindingFlags.Public | BindingFlags.Instance).Select(x => x.Name));
}
private ScriptOptions CreateOptions()
{
//My References.
var options = ScriptOptions.Default;
//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"
);
return options;
}
/// <summary>
/// Stops this instance.
/// </summary>
public void Stop()
{
_cancaller.Cancel();
}
}
}
|
