Follow rules in Lexer.number parser

[simerplaha]

• Towards Parser errors prevent CodeProvider execution (completion, goto definition etc) #104.
• Parses the following cases as they are valid numbers in ralphc:

  let num0 = 1_
  let num1 = 1_._
  let num2 = 1_.____0
  let num3 = 1_._0___0

[tdroxler]

What number does it actually gives in the end?

are the _ just ignored in ralphc?

[simerplaha]

Yes, the underscores seems to be ignored and returned as 1: BigInteger for all the above cases.

Same for let num = ___1

And if 0 here let num2 = 1_.____0 is replaced with 1, it responds with "invalid number".