Support of far calls and CREATE

[hedgar2017]

Support of far calls and CREATE

[sorpaas]

Are you using the 0.x or 1.0-alpha version? In any case, yes the CREATE/CALL opcodes will trap on evm_core::Interpreter (for 0.x) or evm_interpreter::interpreter::EtableInterpreter (for 1.0-alpha). You are not supposed to use that directly unless you do something really customized.

CREATE/CALL requires a call stack, and that's implemented in evm. If you use 0.x, you can find StackExecutor which will be what you need. If you use 1.0-alpha, it allows much more customizibility, and the entrypoint is simply evm::transact. We'll add more docs soon!

[hedgar2017]

@sorpaas thanks for your response!
I will investigate the direct usage soon. Is it still possible to override the context values (e.g. chain_id) to make our test datasets work?
Our testing infrastructure is quite minimal. We just submit code, context, and calldata, and check if the return data and events returned match the expected data.

[hedgar2017]

@sorpaas are there any default implementations for Invoker for evm:transact?

[sorpaas]

The standard invoker! https://docs.rs/evm/1.0.0-alpha.2/evm/standard/struct.Invoker.html

[hedgar2017]

The standard invoker! https://docs.rs/evm/1.0.0-alpha.2/evm/standard/struct.Invoker.html

Oh great, I'd overlooked it, thanks!