namespace Python.Runtime
{
using System;
///
/// Represents a reference to a Python object, that is being lent, and
/// can only be safely used until execution returns to the caller.
///
readonly ref struct BorrowedReference
{
readonly IntPtr pointer;
public bool IsNull => this.pointer == IntPtr.Zero;
/// Gets a raw pointer to the Python object
public IntPtr DangerousGetAddress()
=> this.IsNull ? throw new NullReferenceException() : this.pointer;
///
/// Creates new instance of from raw pointer. Unsafe.
///
public BorrowedReference(IntPtr pointer)
{
this.pointer = pointer;
}
public static bool operator ==(BorrowedReference a, BorrowedReference b)
=> a.pointer == b.pointer;
public static bool operator !=(BorrowedReference a, BorrowedReference b)
=> a.pointer != b.pointer;
public override bool Equals(object obj) {
if (obj is IntPtr ptr)
return ptr == pointer;
return false;
}
public override int GetHashCode() => pointer.GetHashCode();
}
}