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ExceptionClassObject.cs
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78 lines (69 loc) · 2.08 KB
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using System;
namespace Python.Runtime;
/// <summary>
/// Base class for Python types that reflect managed exceptions based on
/// System.Exception
/// </summary>
[Serializable]
internal class ExceptionClassObject : ClassObject
{
internal ExceptionClassObject(Type tp) : base(tp)
{
}
internal static Exception? ToException(BorrowedReference ob)
{
var co = GetManagedObject(ob) as CLRObject;
return co?.inst as Exception;
}
/// <summary>
/// Exception __repr__ implementation
/// </summary>
public new static NewReference tp_repr(BorrowedReference ob)
{
Exception? e = ToException(ob);
if (e == null)
{
return Exceptions.RaiseTypeError("invalid object");
}
string name = e.GetType().Name;
string message;
if (e.Message != String.Empty)
{
message = String.Format("{0}('{1}')", name, e.Message);
}
else
{
message = String.Format("{0}()", name);
}
return Runtime.PyString_FromString(message);
}
/// <summary>
/// Exception __str__ implementation
/// </summary>
public new static NewReference tp_str(BorrowedReference ob)
{
Exception? e = ToException(ob);
if (e == null)
{
return Exceptions.RaiseTypeError("invalid object");
}
string message = e.ToString();
string fullTypeName = e.GetType().FullName;
string prefix = fullTypeName + ": ";
if (message.StartsWith(prefix))
{
message = message.Substring(prefix.Length);
}
else if (message.StartsWith(fullTypeName))
{
message = message.Substring(fullTypeName.Length);
}
return Runtime.PyString_FromString(message);
}
public override bool Init(BorrowedReference obj, BorrowedReference args, BorrowedReference kw)
{
if (!base.Init(obj, args, kw)) return false;
var e = (CLRObject)GetManagedObject(obj)!;
return Exceptions.SetArgsAndCause(obj, (Exception)e.inst);
}
}