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Re: (no subject)
> Hello mariaDB developers!
It's so nice to have someone willing to revive mysqltest :-)!
> I am a participant of GSOC 2020 mentored by Nikita Malyavin and Sergey Golubchik.
> Currently I am working on mysqltest parser improvements and I have a question to discuss with everyone:
> To be short:
> Currently there are expressions in if and while to be calculated
> But it is written using switch and works only in condition block.
> Code like:
> let $a= 1 + 2
> Makes $a = "1 + 2"
> Obviously mysqltest syntax needs proper expressions thats why I decided to make them.
> There are following questions:
> What syntax do you want to see?
> let $a = 1 + 2
> $a = 3
> Is a bad idea because we will break lots of previous taest cases.
> let $a = $((1 + 2))
> That is done in a bash style, so it seems to be more comfortable to everyone.
Alternatively to $(()) -
let $a = `1 + 2`
$a = 1 + 2
the let-free form that may allow for simplifying the rhs to be also free
from and evaluation hints/operators.
We don't have the let-free assignment as of current, so this seems
possible and new tests (writers :-)) would obviously prefer that.
> Another question is what operators should be in expressions?
> To begin with I want to implement:
> +, -. *, /, ++, --, <, >, ==, !=
`%' - the reminder is very popular. `/' I read would result in a
quotient (the whole part of devision).
> To implement expressions I want to use Byson to make it easier to rewrite parser if needed
> I would be glad to read feedback and critique.
That *will* be coming ! :-)
Andrei Elkin, Replication