ReceiveNative: Send and run code

[Stebalien]

Currently, the default way to transfer funds is to invoke method-0. However, this method is guaranteed to not run code.

It would be nice to have a standard way to transfer funds that does run code.

• This would be the default transfer mechanism from user wallets.
• This would be the default when sending from FEVM with no parameters.

This would allow smart smart contracts to react to deposited funds by default.

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Bikeshed: I hate the name ReceiveNative, but Receive and transfer already taken. This method needs a very generic name as it'll likely be implemented on all contracts by default.

[scotthconner]

GasReceive?

[Stebalien]

Well, this isn't to receive gas. It's to receive FIL.

[Stebalien]

So, I've discussed this with my team (and others), and the solution is just kind of messy:

1. It would require changing all tools to invoke this method.
2. It would be really easy to accidentally not invoke this method.

We'd prefer to just (optionally) run code on method-0, but then we'd have to provide some way to transfer value without running any user code.

So I'm withdrawing this proposal for now.

[anorth]

we'd have to provide some way to transfer value without running any user code

The read-only flag could get close to achieving this. Code could run, but it couldn't do anything with any persistent side effects (including send the value further on, which I assume is already a restriction).