{- |

Module : $Header$

Description : read a prelude library for some comorphisms

Copyright : (c) Christian Maeder and DFKI GmbH 2009

License : GPLv2 or higher

Maintainer : Christian.Maeder@dfki.de

Stability : experimental

Portability : portable

read a prelude library for some comorphisms

-}

module Comorphisms.GetPreludeLib where

import Static.AnalysisLibrary

import Driver.Options

import Driver.ReadFn

import Comorphisms.LogicList

import Static.ComputeTheory

import Static.DevGraph

import Static.GTheory

import Common.Result

import Common.ResultT

import Common.Utils

import Data.Maybe

import qualified Data.Map as Map

import qualified Data.Set as Set

import System.FilePath

readLib :: FilePath -> IO [G_theory]

readLib fp0 = do

lib <- getEnvDef "HETS_LIB" ""

let opts = defaultHetcatsOpts { libdirs = splitOn ':' lib }

fp = lib </> fp0

Result _ mLib <- runResultT $ anaLibFileOrGetEnv preLogicGraph

opts Set.empty Map.empty emptyDG (fileToLibName opts fp) fp

case mLib of

Nothing -> fail $ "library could not be read from: " ++ fp

Just (ln, le) -> do

let dg = lookupDGraph ln le

return . catMaybes . Map.fold (\ ge -> case ge of

SpecEntry (ExtGenSig _ (NodeSig n _)) ->

if null $ outDG dg n then (computeTheory le ln n :)

else id

_ -> id) [] $ globalEnv dg