Immutable in Neo.VM

[shargon]

Following the line of #585 we should be able to have the same as immutable in solidity.

We can use readonly and the constructor of the class, if the contract have a constructor it could be called during _ondeploy, then, we can modify the script like evm does for immutables, it will be storage free and safe to read this values because these values will be converted as constants in the script.

Maybe we can create a new syscall that can be called only during _ondeploy for replace this constants, then the rest can be done in the compiler.

class contract : SmartContract
{
   public readonly Uint160 owner;

   public contract()
   {
     owner = Runtime.CallingScriptHash;
   }
}

[cschuchardt88]

Is that like neo-project/proposals#159 owner? Or is it for tracking a contract address?

[shargon]

Is for gas saving, you can use whatever you want. Also it abstract the storage access (like #585) that is so different than in solidity, it will be easy to attract solidity developers.

[shargon]

I think that is not possible without a new syscall for tamper the script during _deploy.