Is AssemblyStackAssignement working correctly?

[fvictorio]

Using AST explorer with this code:

		assembly {
			x := 3
            4 =: y
  		}

results in this nodes:

Notice that the stack assignment is separated from the expression assigned to it.

I don't know if this is intentional or not (I don't know much about solidity's assembly), but it makes it harder to use.

In the grammar, the assignment and stack assignment are defiend as this:

assemblyAssignment
  : assemblyIdentifierOrList ':=' assemblyExpression ;

assemblyStackAssignment
  : '=:' identifier ;

So I wonder why is not done like this:

assemblyStackAssignment
  : assemblyExpression '=:' identifier ;

[GNSPS]

Definitely taking a look over this next week!