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Added IEquatable<int> implementation and FromExcpetion, HRESULT_FROM_NT and HRESULT_FROM_WIN32 methods

pull/119/head
dahall 2020-05-04 10:55:11 -06:00
parent d353468dd7
commit 64e007e564
1 changed files with 34 additions and 1 deletions
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35
PInvoke/Shared/WinError/HRESULT.cs
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@ -41,7 +41,7 @@ namespace Vanara.PInvoke
[StructLayout(LayoutKind.Sequential)]
[TypeConverter(typeof(HRESULTTypeConverter))]
[PInvokeData("winerr.h")]
public partial struct HRESULT : IComparable, IComparable<HRESULT>, IEquatable<HRESULT>, IConvertible, IErrorProvider
public partial struct HRESULT : IComparable, IComparable<HRESULT>, IEquatable<HRESULT>, IEquatable<int>, IConvertible, IErrorProvider
{
internal readonly int _value;
@ -261,6 +261,24 @@ namespace Vanara.PInvoke
/// <returns>The result of the conversion.</returns>
public static explicit operator int(HRESULT value) => value._value;
/// <summary>Tries to extract a HRESULT from an exception.</summary>
/// <param name="exception">The exception.</param>
/// <returns>The error. If undecipherable, E_FAIL is returned.</returns>
public static HRESULT FromException(Exception exception)
{
if (exception is Win32Exception we)
return new Win32Error(unchecked((uint)we.NativeErrorCode)).ToHRESULT();
if (exception.InnerException is Win32Exception iwe)
return new Win32Error(unchecked((uint)iwe.NativeErrorCode)).ToHRESULT();
#if !(NET20 || NET35 || NET40)
if (exception.HResult != 0)
return new HRESULT(exception.HResult);
else if (exception.InnerException != null && exception.InnerException.HResult != 0)
return new HRESULT(exception.InnerException.HResult);
#endif
return E_FAIL;
}
/// <summary>Gets the code value from a 32-bit value.</summary>
/// <param name="hresult">The 32-bit raw HRESULT value.</param>
/// <returns>The code value (bits 0-15).</returns>
@ -287,6 +305,16 @@ namespace Vanara.PInvoke
/// <returns>The resulting <see cref="HRESULT"/> instance from the conversion.</returns>
public static implicit operator HRESULT(uint value) => new HRESULT(value);
/// <summary>Maps an NT Status value to an HRESULT value.</summary>
/// <param name="err">The NT Status value.</param>
/// <returns>The HRESULT value.</returns>
public static HRESULT HRESULT_FROM_NT(NTStatus err) => err.ToHRESULT();
/// <summary>Maps a system error code to an HRESULT value.</summary>
/// <param name="err">The system error code.</param>
/// <returns>The HRESULT value.</returns>
public static HRESULT HRESULT_FROM_WIN32(Win32Error err) => err.ToHRESULT();
/// <summary>Creates a new <see cref="HRESULT"/> from provided values.</summary>
/// <param name="severe">if set to <c>false</c>, sets the severity bit to 1.</param>
/// <param name="facility">The facility.</param>
@ -374,6 +402,11 @@ namespace Vanara.PInvoke
: throw new ArgumentException(@"Object cannot be converted to a UInt32 value for comparison.", nameof(obj));
}
/// <summary>Indicates whether the current object is equal to an <see cref="int"/>.</summary>
/// <param name="other">An object to compare with this object.</param>
/// <returns>true if the current object is equal to the <paramref name="other"/> parameter; otherwise, false.</returns>
public bool Equals(int other) => other == _value;
/// <summary>Determines whether the specified <see cref="object"/>, is equal to this instance.</summary>
/// <param name="obj">The <see cref="object"/> to compare with this instance.</param>
/// <returns><c>true</c> if the specified <see cref="object"/> is equal to this instance; otherwise, <c>false</c>.</returns>