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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
/*=============================================================================
**
**
**
** Purpose: The exception class for type loading failures.
**
**
=============================================================================*/
using System;
using System.Globalization;
using System.Runtime.Serialization;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
using System.Runtime.Versioning;
using System.Security;
using System.Diagnostics.Contracts;
namespace System
{
public class TypeLoadException : SystemException, ISerializable
{
public TypeLoadException()
: base(SR.Arg_TypeLoadException)
{
HResult = __HResults.COR_E_TYPELOAD;
}
public TypeLoadException(String message)
: base(message)
{
HResult = __HResults.COR_E_TYPELOAD;
}
public TypeLoadException(String message, Exception inner)
: base(message, inner)
{
HResult = __HResults.COR_E_TYPELOAD;
}
public override String Message
{
get
{
SetMessageField();
return _message;
}
}
private void SetMessageField()
{
if (_message == null)
{
if ((ClassName == null) &&
(ResourceId == 0))
_message = SR.Arg_TypeLoadException;
else
{
if (AssemblyName == null)
AssemblyName = SR.IO_UnknownFileName;
if (ClassName == null)
ClassName = SR.IO_UnknownFileName;
String format = null;
GetTypeLoadExceptionMessage(ResourceId, JitHelpers.GetStringHandleOnStack(ref format));
_message = String.Format(CultureInfo.CurrentCulture, format, ClassName, AssemblyName, MessageArg);
}
}
}
public String TypeName
{
get
{
if (ClassName == null)
return String.Empty;
return ClassName;
}
}
// This is called from inside the EE.
private TypeLoadException(String className,
String assemblyName,
String messageArg,
int resourceId)
: base(null)
{
HResult = __HResults.COR_E_TYPELOAD;
ClassName = className;
AssemblyName = assemblyName;
MessageArg = messageArg;
ResourceId = resourceId;
// Set the _message field eagerly; debuggers look at this field to
// display error info. They don't call the Message property.
SetMessageField();
}
protected TypeLoadException(SerializationInfo info, StreamingContext context) : base(info, context)
{
throw new PlatformNotSupportedException();
}
[DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
[SuppressUnmanagedCodeSecurity]
private static extern void GetTypeLoadExceptionMessage(int resourceId, StringHandleOnStack retString);
public override void GetObjectData(SerializationInfo info, StreamingContext context)
{
base.GetObjectData(info, context);
}
// If ClassName != null, GetMessage will construct on the fly using it
// and ResourceId (mscorrc.dll). This allows customization of the
// class name format depending on the language environment.
private String ClassName;
private String AssemblyName;
private String MessageArg;
internal int ResourceId;
}
}
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