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use crate::*;



/// \[[docs.microsoft.com](https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-erref/0642cb2f-2075-4469-918c-4441e69c548a)\]
/// [HResultError] or [ErrorCode]
#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)] #[repr(transparent)] pub struct ErrorHResultOrCode(pub(crate) u32);

impl ErrorHResultOrCode {
    //         0 ..=      FFFF: ErrorCode
    //    1_0000 ..= 7FFF_FFFF: <invalid/reserved>
    // 8000_0000 ..= FFFF_FFFF: HResultError

    pub const fn to_u32(self)       -> u32                  { self.0 }
    pub const fn to_code(self)      -> Option<ErrorCode>    { if self.0 <= 0xFFFF       { Some(ErrorCode(self.0 as _))  } else { None } }
    pub const fn to_hresult(self)   -> Option<HResultError> { if 0x8000_0000 <= self.0  { Some(HResultError(self.0))    } else { None } }
}

impl From<ErrorHResultOrCode> for u32                { fn from(v: ErrorHResultOrCode) -> Self { v.0 } }
impl From<u32               > for ErrorHResultOrCode { fn from(v: u32               ) -> Self { Self(v) } }
impl From<ErrorCode         > for ErrorHResultOrCode { fn from(v: ErrorCode         ) -> Self { Self(v.0.into()) } }
impl From<HResultError      > for ErrorHResultOrCode { fn from(v: HResultError      ) -> Self { Self(v.0) } }