catch redundant brackets

[yegor256]

I suggest we create a new XSL checker for eo-parser, which will prohibit the usage of redundant brackets, for example, this code should not parse:

[] > foo
  (1.add (a.add 5) (4)) > x

This one should be expected instead:

[] > foo
  1.add (a.add 5) 4 > x

[yegor256]

@andreoss what do you think?

[andreoss]

@yegor256 Please, assign to me. Are you positive that it should be XSL? It seems that it would be easier to count and discard extra parenthesis in XeListener.

[yegor256]

@andreoss I'm not sure about XSL. I actually don't know how this can be implemented at all :) You go ahead.

[yegor256]

@volodya-lombrozo try this one please

[0pdd]

@yegor256 the puzzle #1490 is still not solved.

[0pdd]

@yegor256 the only puzzle #1490 is solved here.