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//
// System.ModuleHandle.cs
//
// Author:
// Zoltan Varga (vargaz@gmail.com)
//
// (C) Ximian, Inc. http://www.ximian.com
//
//
// Copyright (C) 2004 Novell, Inc (http://www.novell.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.Reflection;
using System.Runtime.Serialization;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Runtime.ConstrainedExecution;
namespace System
{
[ComVisible (true)]
public struct ModuleHandle
{
IntPtr value;
public static readonly ModuleHandle EmptyHandle = new ModuleHandle (IntPtr.Zero);
internal ModuleHandle (IntPtr v)
{
value = v;
}
internal IntPtr Value {
get {
return value;
}
}
public int MDStreamVersion {
get {
if (value == IntPtr.Zero)
throw new ArgumentNullException (String.Empty, "Invalid handle");
return RuntimeModule.GetMDStreamVersion (value);
}
}
internal void GetPEKind (out PortableExecutableKinds peKind, out ImageFileMachine machine)
{
if (value == IntPtr.Zero)
throw new ArgumentNullException (String.Empty, "Invalid handle");
RuntimeModule.GetPEKind (value, out peKind, out machine);
}
public RuntimeFieldHandle ResolveFieldHandle (int fieldToken)
{
return ResolveFieldHandle (fieldToken, null, null);
}
public RuntimeMethodHandle ResolveMethodHandle (int methodToken)
{
return ResolveMethodHandle (methodToken, null, null);
}
public RuntimeTypeHandle ResolveTypeHandle (int typeToken)
{
return ResolveTypeHandle (typeToken, null, null);
}
private IntPtr[] ptrs_from_handles (RuntimeTypeHandle[] handles) {
if (handles == null)
return null;
else {
IntPtr[] res = new IntPtr [handles.Length];
for (int i = 0; i < handles.Length; ++i)
res [i] = handles [i].Value;
return res;
}
}
public RuntimeTypeHandle ResolveTypeHandle (int typeToken,
RuntimeTypeHandle[] typeInstantiationContext,
RuntimeTypeHandle[] methodInstantiationContext) {
ResolveTokenError error;
if (value == IntPtr.Zero)
throw new ArgumentNullException (String.Empty, "Invalid handle");
IntPtr res = RuntimeModule.ResolveTypeToken (value, typeToken, ptrs_from_handles (typeInstantiationContext), ptrs_from_handles (methodInstantiationContext), out error);
if (res == IntPtr.Zero)
throw new TypeLoadException (String.Format ("Could not load type '0x{0:x}' from assembly '0x{1:x}'", typeToken, value.ToInt64 ()));
else
return new RuntimeTypeHandle (res);
}
public RuntimeMethodHandle ResolveMethodHandle (int methodToken,
RuntimeTypeHandle[] typeInstantiationContext,
RuntimeTypeHandle[] methodInstantiationContext) {
ResolveTokenError error;
if (value == IntPtr.Zero)
throw new ArgumentNullException (String.Empty, "Invalid handle");
IntPtr res = RuntimeModule.ResolveMethodToken (value, methodToken, ptrs_from_handles (typeInstantiationContext), ptrs_from_handles (methodInstantiationContext), out error);
if (res == IntPtr.Zero)
throw new Exception (String.Format ("Could not load method '0x{0:x}' from assembly '0x{1:x}'", methodToken, value.ToInt64 ()));
else
return new RuntimeMethodHandle (res);
}
public RuntimeFieldHandle ResolveFieldHandle (int fieldToken,
RuntimeTypeHandle[] typeInstantiationContext,
RuntimeTypeHandle[] methodInstantiationContext) {
ResolveTokenError error;
if (value == IntPtr.Zero)
throw new ArgumentNullException (String.Empty, "Invalid handle");
IntPtr res = RuntimeModule.ResolveFieldToken (value, fieldToken, ptrs_from_handles (typeInstantiationContext), ptrs_from_handles (methodInstantiationContext), out error);
if (res == IntPtr.Zero)
throw new Exception (String.Format ("Could not load field '0x{0:x}' from assembly '0x{1:x}'", fieldToken, value.ToInt64 ()));
else
return new RuntimeFieldHandle (res);
}
public RuntimeFieldHandle GetRuntimeFieldHandleFromMetadataToken (int fieldToken) {
return ResolveFieldHandle (fieldToken);
}
public RuntimeMethodHandle GetRuntimeMethodHandleFromMetadataToken (int methodToken)
{
return ResolveMethodHandle (methodToken);
}
public RuntimeTypeHandle GetRuntimeTypeHandleFromMetadataToken (int typeToken)
{
return ResolveTypeHandle (typeToken);
}
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
public override bool Equals (object obj)
{
if (obj == null || GetType () != obj.GetType ())
return false;
return value == ((ModuleHandle)obj).Value;
}
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
public bool Equals (ModuleHandle handle)
{
return value == handle.Value;
}
public override int GetHashCode ()
{
return value.GetHashCode ();
}
public static bool operator == (ModuleHandle left, ModuleHandle right)
{
return Equals (left, right);
}
public static bool operator != (ModuleHandle left, ModuleHandle right)
{
return !Equals (left, right);
}
}
}
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