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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.
**
**
=============================================================================*/
namespace System {
using System;
using System.Globalization;
using System.Runtime.Remoting;
using System.Runtime.Serialization;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
using System.Runtime.Versioning;
using System.Security;
using System.Security.Permissions;
using System.Diagnostics.Contracts;
[Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public class TypeLoadException : SystemException, ISerializable {
public TypeLoadException()
: base(Environment.GetResourceString("Arg_TypeLoadException")) {
SetErrorCode(__HResults.COR_E_TYPELOAD);
}
public TypeLoadException(String message)
: base(message) {
SetErrorCode(__HResults.COR_E_TYPELOAD);
}
public TypeLoadException(String message, Exception inner)
: base(message, inner) {
SetErrorCode(__HResults.COR_E_TYPELOAD);
}
public override String Message
{
get {
SetMessageField();
return _message;
}
}
private void SetMessageField()
{
if (_message == null) {
if ((ClassName == null) &&
(ResourceId == 0))
_message = Environment.GetResourceString("Arg_TypeLoadException");
else {
if (AssemblyName == null)
AssemblyName = Environment.GetResourceString("IO_UnknownFileName");
if (ClassName == null)
ClassName = Environment.GetResourceString("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)
{
SetErrorCode(__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) {
if (info == null)
throw new ArgumentNullException(nameof(info));
Contract.EndContractBlock();
ClassName = info.GetString("TypeLoadClassName");
AssemblyName = info.GetString("TypeLoadAssemblyName");
MessageArg = info.GetString("TypeLoadMessageArg");
ResourceId = info.GetInt32("TypeLoadResourceID");
}
[DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
[SuppressUnmanagedCodeSecurity]
private static extern void GetTypeLoadExceptionMessage(int resourceId, StringHandleOnStack retString);
//We can rely on the serialization mechanism on Exception to handle most of our needs, but
//we need to add a few fields of our own.
public override void GetObjectData(SerializationInfo info, StreamingContext context) {
if (info == null)
throw new ArgumentNullException(nameof(info));
Contract.EndContractBlock();
base.GetObjectData(info, context);
info.AddValue("TypeLoadClassName", ClassName, typeof(String));
info.AddValue("TypeLoadAssemblyName", AssemblyName, typeof(String));
info.AddValue("TypeLoadMessageArg", MessageArg, typeof(String));
info.AddValue("TypeLoadResourceID", ResourceId);
}
// 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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