identifyBlockType in templates.nim

proc identifyBlockType(str:string, point:int):BlockType =
  if str.substr(point, point+2) == "$if":
    return ifBlock
  elif str.substr(point, point+4) == "$elif":
    return elifBlock
  elif str.substr(point, point+4) == "$else":
    return elseBlock
  elif str.substr(point, point+3) == "$for":
    return forBlock
  elif str.substr(point, point+4) == "$case":
    return caseBlock
  elif str.substr(point, point+2) == "$of":
    return ofBlock
  elif str.substr(point, point+5) == "$while":
    return whileBlock
  elif str.substr(point, point+1) == "$(":
    return displayVariableBlock
  elif str.substr(point, point+1) == "${":
    return nimCodeBlock
  else:
    let strAfterDoller = str.substr(point+1, point+2)
    if "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ".contains(strAfterDoller):
      raise newException(Exception, "The format of $xxx is invalid. Please specify $if, $elif, $else, $for, $case, $of, $while, $(), or ${}.")
    return strBlock
itsumura-h / nim-basolato

identifyBlockType in templates.nim #300
