{- |

Module : $Header$

Description : Abstract syntax for the Edinburgh Logical Framework

Copyright : (c) Kristina Sojakova, DFKI Bremen 2010

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

Maintainer : k.sojakova@jacobs-university.de

Stability : experimental

Portability : portable

-}

module LF.AS

( BASIC_SPEC (..)

, BASIC_ITEM (..)

, SYMB_ITEMS (..)

, SYMB_MAP_ITEMS (..)

, SYMB_OR_MAP (..)

) where

import Common.AS_Annotation

import Common.Id

import Common.Doc

import Common.DocUtils

-- grammar for basic specs

data BASIC_SPEC = Basic_spec [Annoted BASIC_ITEM]

deriving Show

instance GetRange BASIC_SPEC

data BASIC_ITEM = Decl String

| Form String

deriving Show

-- grammar for symbols and symbol maps

data SYMB_ITEMS = Symb_items [String]

deriving (Show, Eq)

data SYMB_MAP_ITEMS = Symb_map_items [SYMB_OR_MAP]

deriving (Show, Eq)

data SYMB_OR_MAP = Symb String

| Symb_map String String

deriving (Show, Eq)

-- pretty printing

instance Pretty BASIC_SPEC where

pretty = printBasicSpec

instance Pretty BASIC_ITEM where

pretty = printBasicItem

instance Pretty SYMB_ITEMS where

pretty = printSymbItems

instance Pretty SYMB_MAP_ITEMS where

pretty = printSymbMapItems

instance Pretty SYMB_OR_MAP where

pretty = printSymbOrMap

printBasicSpec :: BASIC_SPEC -> Doc

printBasicSpec (Basic_spec xs) = vcat $ map pretty xs

printBasicItem :: BASIC_ITEM -> Doc

printBasicItem (Decl d) = pretty d <> dot

printBasicItem (Form f) = dot <+> pretty f

printSymbItems :: SYMB_ITEMS -> Doc

printSymbItems (Symb_items xs) = ppWithCommas xs

printSymbMapItems :: SYMB_MAP_ITEMS -> Doc

printSymbMapItems (Symb_map_items xs) = ppWithCommas xs

printSymbOrMap :: SYMB_OR_MAP -> Doc

printSymbOrMap (Symb s) = pretty s

printSymbOrMap (Symb_map s t) = pretty s <+> mapsto <+> pretty t