{- |

Module : $Header$

Description : converting (ie. kif) strings to CASL identifiers

Copyright : (c) T.Mossakowski, C.Maeder and Uni Bremen 2006

License : similar to LGPL, see HetCATS/LICENSE.txt or LIZENZ.txt

Maintainer : Christian.Maeder@dfki.de

Stability : provisional

Portability : portable

converting (ie. kif) strings to CASL identifiers

-}

module Common.ToId where

import Common.Id

import Common.Lexer

import Common.Parsec

import Common.ProofUtils

import Common.Token

import qualified Data.Map as Map

import Text.ParserCombinators.Parsec

-- | convert a string to a legal simple CASL identifier

toSimpleId :: String -> Token

toSimpleId s = mkSimpleId $

case parse (reserved (casl_reserved_words

++ formula_words) scanAnyWords >> eof)

"Common.ToId" s of

Left _ -> 'a' : concatMap ( \ c -> '_' : Map.findWithDefault [c] c

(Map.insert '_' "U" charMap)) s

Right _ -> s

-- | convert a string to a legal CASL identifier

toId :: String -> Id

toId = simpleIdToId . toSimpleId