{-# LANGUAGE MultiParamTypeClasses, TypeSynonymInstances, FlexibleInstances #-}

{- |

Module : $Header$

Description : Instance of class Logic for the Haskell logic

Copyright : (c) Christian Maeder, Sonja Groening, Uni Bremen 2002-2004

License : GPLv2 or higher, see LICENSE.txt

Maintainer : Christian.Maeder@dfki.de

Stability : provisional

Portability : non-portable(Logic)

Here is the place where the classes 'Category', 'Syntax',

'StaticAnalysis', 'Sentences', and 'Logic' are instantiated for

Haskell.

Some method implementations for 'StaticAnalysis' and 'Sentences'

are still missing.

-}

module Haskell.Logic_Haskell

( Haskell(..)

, HaskellMorphism

, SYMB_ITEMS

, SYMB_MAP_ITEMS

, Haskell_Sublogics

, Symbol

, RawSymbol

) where

import Common.AS_Annotation

import Common.DefaultMorphism

import Common.Doc as Doc

import Common.DocUtils

import Common.Id

import Data.Monoid

import Haskell.TiPropATC()

import Haskell.HatParser

import Haskell.HatAna

import Logic.Logic

-- a dummy datatype for the LogicGraph and for identifying the right

-- instances

data Haskell = Haskell deriving Show

instance Language Haskell where

description _ = unlines

[ "Haskell - a purely functional programming language"

, "featuring static typing, higher-order functions, polymorphism,"

, "type classes and monadic effects."

, "See http://www.haskell.org. This version is based on Programatica,"

, "see http://www.cse.ogi.edu/PacSoft/projects/programatica/" ]

type HaskellMorphism = DefaultMorphism Sign

-- abstract syntax, parsing (and printing)

type SYMB_ITEMS = ()

type SYMB_MAP_ITEMS = ()

instance Monoid HsDecls where

mempty = HsDecls []

mappend (HsDecls l1) (HsDecls l2) = HsDecls $ l1 ++ l2

instance Syntax Haskell HsDecls

SYMB_ITEMS SYMB_MAP_ITEMS

where

parse_basic_spec Haskell = Just hatParser

parse_symb_items Haskell = Nothing

parse_symb_map_items Haskell = Nothing

type Haskell_Sublogics = ()

type Symbol = ()

type RawSymbol = ()

instance GetRange (TiDecl PNT)

instance Sentences Haskell (TiDecl PNT) Sign HaskellMorphism Symbol where

map_sen Haskell _m s = return s

print_named Haskell sen =

pretty (sentence sen) Doc.<>

case senAttr sen of

[] -> empty

lab -> space Doc.<> text "{-" <+> text lab <+> text "-}"

instance StaticAnalysis Haskell HsDecls

(TiDecl PNT)

SYMB_ITEMS SYMB_MAP_ITEMS

Sign

HaskellMorphism

Symbol RawSymbol where

basic_analysis Haskell = Just hatAna

empty_signature Haskell = emptySign

signature_union Haskell s = return . addSign s

final_union Haskell = signature_union Haskell

is_subsig Haskell = isSubSign

subsig_inclusion Haskell = defaultInclusion

instance Logic Haskell Haskell_Sublogics

HsDecls (TiDecl PNT) SYMB_ITEMS SYMB_MAP_ITEMS

Sign

HaskellMorphism

Symbol RawSymbol ()