[Hardhat] Hook into EVM internal message calls to properly setup the storage

[acuarica]

Our solution to setup storage slots prior being accessed is trap Provider's request calls. However, something we overlook is when a contract calls an HTS token. For example

contract CallToken {
    function getTokenTotalSupply(address htsTokenAddress) external view returns (uint256) {
        return IERC20(htsTokenAddress).totalSupply();
    }
}

In this case, the request mechanism won't work because the call is internal and not visible through the provider. We need a solution that allows us to hook into the EVM when calls are being executed.

We could hook into the EVM using something like¹

    vm.evm.events?.on("beforeMessage", this.handleBeforeMessage.bind(this));

where vm is provider._node._vm. It seems this approach allows us to catch all messages calls before the actual call.

If this solution works, it would change the current approach. Instead of extending the provider, we need would need to listen to this event, and hook only into calls to 0x167. From the payload data to 0x167 we can get the actual token address and setup the storage accordingly. This should solve both #55 and #50 (comment) as well.

Footnotes

1. https://github.com/zemse/hardhat-tracer/blob/bc75d49be050476d01f078489ba2a50823af6faa/src/trace-recorder.ts#L57 ↩