gistfile1.txt

import parseutils, strutils

template emitErrorIf(condition, errorString) =
  if condition:
    echo(errorString)
    return 1

proc execDefine(input: string): int =
  var position, newPosition = 0
    
  position = skipWhile(input, Whitespace, position)
  emitErrorIf(newPosition == position):
    "Error: Expected \"(\" after function name."
  else:
    position = newPosition