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//
// RewriteAndLoad.cs
//
// Authors:
// Chris Bacon (chrisbacon76@gmail.com)
//
// Copyright (C) 2010 Chris Bacon
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Reflection;
using Mono.CodeContracts.Rewrite;
using System.IO;
using System.Linq.Expressions;
namespace MonoTests.Mono.CodeContracts {
class RewriteAndLoad : IDisposable {
class Loader : MarshalByRefObject {
private Assembly assembly;
public void Load (byte [] rewrittenAssemblyBytes)
{
this.assembly = AppDomain.CurrentDomain.Load (rewrittenAssemblyBytes);
}
public object Call(string typeName, string methodName, object[] args)
{
Type type = this.assembly.GetType (typeName);
if (type == null) {
Console.WriteLine ("Cannot get type: " + typeName);
}
var method = type.GetMethod (methodName, BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static);
if (method == null) {
Console.WriteLine ("Cannot get method: " + methodName);
}
try {
return method.Invoke (null, args);
} catch (TargetInvocationException e) {
throw new Exception(e.InnerException.Message);
}
}
}
private AppDomain testDomain = null;
private Loader loader = null;
public void Load ()
{
Assembly assembly = Assembly.GetExecutingAssembly ();
var appDomainSetup = new AppDomainSetup {
ApplicationBase = Path.GetDirectoryName(assembly.Location)
};
this.testDomain = AppDomain.CreateDomain ("TestDomain", null, appDomainSetup);
this.testDomain.AssemblyResolve += (s, e) => {
return Assembly.LoadFrom (e.Name);
};
this.loader = (Loader) this.testDomain.CreateInstanceAndUnwrap (assembly.Location, typeof (Loader).FullName);
using (var rewritten = new MemoryStream ()) {
RewriterOptions options = new RewriterOptions {
ForceAssemblyRename = "RewrittenForTest",
Assembly = assembly.Location,
OutputFile = rewritten,
ThrowOnFailure = true,
WritePdbFile = false,
};
Rewriter.Rewrite (options);
byte [] bytes = rewritten.ToArray ();
this.loader.Load (bytes);
}
}
public void Dispose ()
{
this.loader = null;
if (this.testDomain != null) {
AppDomain.Unload (this.testDomain);
this.testDomain = null;
}
}
public void Call (Expression<Action> methodExpr)
{
var e = (MethodCallExpression) methodExpr.Body;
if (e.Object != null) {
throw new ArgumentException ("Method must be static");
}
var m = e.Method;
var args = e.Arguments.Select (a => {
while (a.CanReduce) {
a = a.Reduce ();
}
switch (a.NodeType) {
case ExpressionType.Constant:
return ((ConstantExpression) a).Value;
case ExpressionType.MemberAccess:
return new object ();
default:
throw new ArgumentException ("Cannot transfer argument");
}
throw new NotImplementedException();
}).ToArray ();
this.loader.Call (m.DeclaringType.FullName, m.Name, args);
}
}
}
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