Create a string from a series of raw identifiers

string.sjs

macro $string {
    case {_ ([$x $inner ...] $rest ...)} => {
        var ctx = #{$x},
            value = ctx[0].token.value,
            str = makeValue(value, #{here});

            return withSyntax($val = [str]) {
                return #{'[' + $val + $string($inner ...) + ']' + $string($rest ...)}
            }
    }
    case {_ ($x $rest ...) } => {
        var ctx = #{$x},
            value = ctx[0].token.value,
            str = makeValue(value, #{here});

            return withSyntax($val = [str]) {
                return #{$val + $string($rest ...)}
            }
    }
    case {_ ()} => {
        return #{''};
    }
}

a.b.c[x + 1] becomes 'a.b.c[x + 1]'