Home/ Questions/Q 184423
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-11T15:17:22+00:00

Is there a way in .NET, using Reflection.Emit , to access the topmost-but-one item

  • 0

Is there a way in .NET, using Reflection.Emit, to access the topmost-but-one item from the stack? So if A is topmost, and B next – I want to process B then A. It would be fine to duplicate B above A (since I can simply ‘pop’ the second B when I get to it).

Currently, I am declaring a local:

    LocalBuilder loc = il.DeclareLocal(typeof(Foo));     il.Emit(OpCodes.Stloc, loc); // store and pop topmost stack item     // work with (pop) previous stack item      il.Emit(OpCodes.Ldloc, loc); // push old topmost stack item

Is there a route that doesn’t need the explicit local?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. I don’t think so. In IL there aren’t any instructions like swap which would allow you to do what you want. Why do you see using a local as objectionable? If the JIT compiler is good enough this won’t result in any slower machine code than using a hypothetical swap operation in IL.

    • 0