code: def make_node(lower, upper, lineno):
          
          if not is_static(lower, upper):
              syntax_error(lineno, 'Array bounds must be constants')
              return None
  
          if isinstance(lower, SymbolVAR):
              lower = lower.value
          if isinstance(upper, SymbolVAR):
              upper = upper.value
  
          lower.value = int(lower.value)
          upper.value = int(upper.value)
  
          if lower.value < 0:
              syntax_error(lineno, 'Array bounds must be greater than 0')
              return None
  
          if lower.value > upper.value:
              syntax_error(lineno, 'Lower array bound must be less or equal to upper one')
              return None
  
          return SymbolBOUND(lower.value, upper.value)
docs: Creates an array bound