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//
// AssemblyWrapper.cs
//
// Author:
// Mike Krüger <mkrueger@xamarin.com>
//
// Copyright (c) 2012 Xamarin <http://xamarin.com>
//
// 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 ICSharpCode.Decompiler.CSharp;
using ICSharpCode.Decompiler.TypeSystem;
using System.Threading.Tasks;
using MonoDevelop.Core;
using System.IO;
using System.Threading;
using System.Collections.Generic;
using ICSharpCode.Decompiler.Metadata;
using System.Reflection.Metadata;
using System.Linq;
using ICSharpCode.Decompiler.TypeSystem.Implementation;
using ICSharpCode.Decompiler.CSharp.Transforms;
namespace MonoDevelop.AssemblyBrowser
{
class AssemblyLoader : IDisposable
{
readonly CancellationTokenSource src = new CancellationTokenSource ();
readonly AssemblyBrowserWidget widget;
public string FileName {
get;
private set;
}
Task<PEFile> assemblyLoaderTask;
TaskCompletionSource<PEFile> assemblyDefinitionTaskSource;
public Task<PEFile> LoadingTask {
get {
return assemblyLoaderTask;
}
set {
assemblyLoaderTask = value;
}
}
public PEFile Assembly => AssemblyTask.Result;
public Task<PEFile> AssemblyTask => assemblyDefinitionTaskSource.Task;
CSharpDecompiler csharpDecompiler;
public CSharpDecompiler CSharpDecompiler {
get {
if (csharpDecompiler == null) {
csharpDecompiler = new CSharpDecompiler (DecompilerTypeSystem, new ICSharpCode.Decompiler.DecompilerSettings (LanguageVersion.Latest));
csharpDecompiler.AstTransforms.Add (new EscapeInvalidIdentifiers ());
}
return csharpDecompiler;
}
}
DecompilerTypeSystem decompilerTypeSystem;
public DecompilerTypeSystem DecompilerTypeSystem {
get {
if (decompilerTypeSystem == null) {
decompilerTypeSystem = new DecompilerTypeSystem (Assembly, new AssemblyResolver (Assembly, widget));
}
return decompilerTypeSystem;
}
}
public Error Error { get; internal set; }
public bool IsLoaded { get; private set; }
public AssemblyLoader (AssemblyBrowserWidget widget, string fileName)
{
if (widget == null)
throw new ArgumentNullException (nameof (widget));
if (fileName == null)
throw new ArgumentNullException (nameof (fileName));
this.widget = widget;
FileName = fileName;
if (!File.Exists (fileName))
throw new ArgumentException ("File doesn't exist.", nameof (fileName));
assemblyDefinitionTaskSource = new TaskCompletionSource<PEFile> ();
assemblyLoaderTask = Task.Run (() => {
try {
var peFile = new PEFile (FileName, System.Reflection.PortableExecutable.PEStreamOptions.PrefetchEntireImage);
assemblyDefinitionTaskSource.SetResult (peFile);
return peFile;
} catch (Exception e) {
LoggingService.LogError ("Error while reading assembly " + FileName, e);
Error = new Error(e.Message);
assemblyDefinitionTaskSource.SetResult (null);
return null;
} finally { IsLoaded = true; }
}, src.Token);
}
class MyUniversalAssemblyResolver : UniversalAssemblyResolver
{
public MyUniversalAssemblyResolver (string mainAssemblyFileName, bool throwOnError, string targetFramework) : base (mainAssemblyFileName, throwOnError, targetFramework)
{
}
}
class AssemblyResolver : IAssemblyResolver
{
readonly PEFile assembly;
readonly AssemblyBrowserWidget widget;
public AssemblyResolver (PEFile assembly, AssemblyBrowserWidget widget)
{
this.assembly = assembly;
this.widget = widget;
}
public PEFile Resolve (IAssemblyReference reference)
{
try {
var targetFramework = assembly.Reader.DetectTargetFrameworkId () ?? "";
var resolver = new MyUniversalAssemblyResolver (assembly.FileName, false, targetFramework);
var fileName = resolver.FindAssemblyFile (reference);
if (fileName != null && File.Exists (fileName))
return widget.AddReferenceByFileName (fileName)?.Assembly;
} catch (Exception e) {
LoggingService.LogInternalError ($"Error while resolving assembly {reference.FullName} for {assembly.FileName}.", e);
}
return widget.AddReferenceByAssemblyName (reference.FullName)?.Assembly;
}
public PEFile ResolveModule (PEFile mainModule, string moduleName)
{
return widget.AddReferenceByFileName (mainModule.FileName)?.Assembly;
}
}
class FastNonInterningProvider : InterningProvider
{
Dictionary<string, string> stringDict = new Dictionary<string, string> ();
public override string Intern (string text)
{
if (text == null)
return null;
string output;
if (stringDict.TryGetValue (text, out output))
return output;
stringDict [text] = text;
return text;
}
public override ISupportsInterning Intern (ISupportsInterning obj)
{
return obj;
}
public override IList<T> InternList<T> (IList<T> list)
{
return list;
}
public override object InternValue (object obj)
{
return obj;
}
}
public string LookupAssembly (string fullAssemblyName)
{
var assemblyFile = Runtime.SystemAssemblyService.DefaultAssemblyContext.GetAssemblyLocation (fullAssemblyName, null);
if (assemblyFile != null && File.Exists (assemblyFile))
return assemblyFile;
var name = AssemblyNameReference.Parse (fullAssemblyName);
var path = Path.GetDirectoryName (FileName);
var dll = Path.Combine (path, name.Name + ".dll");
if (File.Exists (dll))
return dll;
var exe = Path.Combine (path, name.Name + ".exe");
if (File.Exists (exe))
return exe;
foreach (var asm in Runtime.SystemAssemblyService.DefaultAssemblyContext.GetAssemblies ()) {
if (string.Equals (asm.Name, fullAssemblyName, StringComparison.OrdinalIgnoreCase))
return asm.Location;
}
return null;
}
#region IDisposable implementation
public void Dispose ()
{
if (assemblyLoaderTask == null)
return;
src.Cancel ();
src.Dispose ();
assemblyLoaderTask = null;
}
#endregion
}
}
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