{- |

Module : $Header$

Description : library names for HetCASL and development graphs

Copyright : (c) Christian Maeder, DFKI GmbH 2008

License : GPLv2 or higher, see LICENSE.txt

Maintainer : Christian.Maeder@dfki.de

Stability : provisional

Portability : portable

Abstract syntax of HetCASL specification libraries

Follows Sect. II:2.2.5 of the CASL Reference Manual.

-}

module Common.LibName

( LibName (LibName)

, LibId (IndirectLink)

, VersionNumber (VersionNumber)

, LinkPath (LinkPath)

, SLinkPath

, isQualNameFrom

, isQualName

, mkQualName

, unQualName

, setFilePath

, getFilePath

, emptyLibName

, convertFileToLibStr

, getLibId

, mkLibStr

) where

import Common.Doc

import Common.DocUtils

import Common.Id

import Common.Keywords

import Common.Utils

import Data.Char

import Data.List

import Data.Ord

import System.FilePath

omTs :: [Token]

omTs = [genToken "OM"]

mkQualName :: SIMPLE_ID -> LibId -> Id -> Id

mkQualName nodeId libId i =

Id omTs [i, simpleIdToId nodeId, libIdToId libId] $ posOfId i

isQualNameFrom :: SIMPLE_ID -> LibId -> Id -> Bool

isQualNameFrom nodeId libId i@(Id _ cs _) = case cs of

_ : n : l : _ | isQualName i ->

n == simpleIdToId nodeId && libIdToId libId == l

_ -> True

isQualName :: Id -> Bool

isQualName (Id ts cs _) = case cs of

_ : _ : _ -> ts == omTs

_ -> False

unQualName :: Id -> Id

unQualName j@(Id _ cs _) = case cs of

i : _ | isQualName j -> i

_ -> j

libIdToId :: LibId -> Id

libIdToId li = let

path = splitOn '/' $ show li

toTok s = Token s $ getRange li

in mkId $ map toTok $ intersperse "/" path

data LibName = LibName

{ getLibId :: LibId

, _libVersion :: Maybe VersionNumber }

emptyLibName :: String -> LibName

emptyLibName s = LibName (IndirectLink s nullRange "") Nothing

data LibId = IndirectLink PATH Range FilePath

-- pos: start of PATH

updFilePathOfLibId :: FilePath -> LibId -> LibId

updFilePathOfLibId fp (IndirectLink p r _) = IndirectLink p r fp

setFilePath :: FilePath -> LibName -> LibName

setFilePath fp ln =

ln { getLibId = updFilePathOfLibId fp $ getLibId ln }

getFilePath :: LibName -> FilePath

getFilePath ln =

case getLibId ln of

IndirectLink _ _ fp -> fp

data VersionNumber = VersionNumber [String] Range

-- pos: "version", start of first string

type PATH = String

instance GetRange LibId where

getRange (IndirectLink _ r _) = r

instance Show LibId where

show (IndirectLink s1 _ _) = s1

instance GetRange LibName where

getRange = getRange . getLibId

instance Show LibName where

show = show . hsep . prettyLibName

prettyVersionNumber :: VersionNumber -> [Doc]

prettyVersionNumber (VersionNumber v _) =

[keyword versionS, hcat $ punctuate dot $ map codeToken v]

prettyLibName :: LibName -> [Doc]

prettyLibName (LibName i mv) = pretty i : case mv of

Nothing -> []

Just v -> prettyVersionNumber v

instance Eq LibId where

IndirectLink s1 _ _ == IndirectLink s2 _ _ = s1 == s2

instance Ord LibId where

IndirectLink s1 _ _ <= IndirectLink s2 _ _ = s1 <= s2

instance Eq LibName where

ln1 == ln2 = compare ln1 ln2 == EQ

instance Ord LibName where

compare = comparing getLibId

instance Pretty LibName where

pretty = fsep . prettyLibName

instance Pretty LibId where

pretty = structId . show

data LinkPath a = LinkPath a [(LibId, Int)] deriving (Ord, Eq)

type SLinkPath = LinkPath String

convertFileToLibStr :: FilePath -> String

convertFileToLibStr = mkLibStr . takeBaseName

stripLibChars :: String -> String

stripLibChars = filter (\ c -> isAlphaNum c || elem c "'_/")

mkLibStr :: String -> String

mkLibStr = dropWhile (== '/') . stripLibChars