using System;
using System.Runtime.InteropServices;
using System.Text;
namespace Python.Runtime.Native
{
[StructLayout(LayoutKind.Sequential)]
struct NativeTypeSpec : IDisposable
{
public readonly StrPtr Name;
public readonly int BasicSize;
public readonly int ItemSize;
public readonly int Flags;
public IntPtr Slots;
public NativeTypeSpec(TypeSpec spec)
{
if (spec is null) throw new ArgumentNullException(nameof(spec));
this.Name = new StrPtr(spec.Name);
this.BasicSize = spec.BasicSize;
this.ItemSize = spec.ItemSize;
this.Flags = (int)spec.Flags;
unsafe
{
int slotsBytes = checked((spec.Slots.Count + 1) * Marshal.SizeOf());
var slots = (TypeSpec.Slot*)Marshal.AllocHGlobal(slotsBytes);
for (int slotIndex = 0; slotIndex < spec.Slots.Count; slotIndex++)
slots[slotIndex] = spec.Slots[slotIndex];
slots[spec.Slots.Count] = default;
this.Slots = (IntPtr)slots;
}
}
public void Dispose()
{
// we have to leak the name
// this.Name.Dispose();
Marshal.FreeHGlobal(this.Slots);
this.Slots = IntPtr.Zero;
}
}
}