clafer-0.4.4: test/Functions.hs

{-
 Copyright (C) 2013-2015 Luke Brown, Michal Antkiewicz <http://gsd.uwaterloo.ca>

 Permission is hereby granted, free of charge, to any person obtaining a copy of
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-}
module Functions where

import qualified Data.List as List
import qualified Data.Map as Map
import Language.Clafer
import System.Directory

getClafers :: FilePath -> IO [(String, String)]
getClafers dir = do
                    files <- getDirectoryContents dir
                    let claferFiles = List.filter checkClaferExt files
                    claferModels <- mapM (\x -> readFile (dir++"/"++x)) claferFiles
                    return $ zip claferFiles claferModels

checkClaferExt :: String -> Bool
checkClaferExt "des.cfr" = True
checkClaferExt file' = if ((eman == "")) then False else (txe == "rfc") && (takeWhile (/='.') (tail eman) /= "esd")
    where (txe, eman) = span (/='.') (reverse file')


compileOneFragment :: ClaferArgs -> InputModel -> Either [ClaferErr] (Map.Map ClaferMode CompilerResult)
compileOneFragment args' model =
    runClafer (argsWithOPTIONS args' model) $
        do
            addModuleFragment model
            parse
            iModule <- desugar Nothing
            compile iModule
            generate

getCompilerResult :: InputModel -> CompilerResult
getCompilerResult    model = case compileOneFragment defaultClaferArgs{keep_unused=True} model of
  Left errors -> error $ show errors
  Right compilerResultMap -> case Map.lookup Alloy compilerResultMap of
    Nothing -> error "No Alloy result in the result map"
    Just compilerResult -> compilerResult

compiledCheck :: Either a b -> Bool
compiledCheck (Left _) = False
compiledCheck (Right _) = True

fromLeft :: Either a b -> a
fromLeft (Left a) = a
fromLeft (Right _) = error "Function fromLeft expects argument of the form 'Left a'"

fromRight :: Either a b -> b
fromRight (Right b) = b
fromRight (Left _) = error "Function fromLeft expects argument of the form 'Right b'"

andMap :: (a -> Bool) -> [a] -> Bool
andMap f lst = and $ map f lst