{-# LANGUAGE DeriveDataTypeable #-}
{- |
Module      :  ./Propositional/Symbol.hs
Description :  Symbols of propositional logic
Copyright   :  (c) Dominik Luecke, Uni Bremen 2007
License     :  GPLv2 or higher, see LICENSE.txt

Maintainer  :  luecke@informatik.uni-bremen.de
Stability   :  experimental
Portability :  portable

Definition of symbols for propositional logic
-}


module Propositional.Symbol
    (
     Symbol (..)           -- Symbol type
    , pretty               -- pretty printing for Symbols
    , symOf                -- Extracts the symbols out of a signature
    , getSymbolMap         -- Determines the symbol map
    , getSymbolName        -- Determines the name of a symbol
    , idToRaw              -- Creates a raw symbol
    , symbolToRaw          -- Convert symbol to raw symbol
    , matches              -- does a symbol match a raw symbol?
    , applySymMap          -- application function for symbol maps
    ) where

import qualified Common.Id as Id
import Common.Doc
import Common.DocUtils

import Data.Data
import qualified Data.Set as Set
import qualified Data.Map as Map

import qualified Propositional.Sign as Sign
import Propositional.Morphism as Morphism

-- | Datatype for symbols
newtype Symbol = Symbol {Symbol -> Id
symName :: Id.Id}
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-- | Extraction of symbols from a signature
symOf :: Sign.Sign -> Set.Set Symbol
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-- | Determines the symbol map of a morhpism
getSymbolMap :: Morphism.Morphism -> Map.Map Symbol Symbol
getSymbolMap :: Morphism -> Map Symbol Symbol
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-- | Determines the name of a symbol
getSymbolName :: Symbol -> Id.Id
getSymbolName :: Symbol -> Id
getSymbolName = Symbol -> Id
symName

-- | make a raw_symbol
idToRaw :: Id.Id -> Symbol
idToRaw :: Id -> Symbol
idToRaw mid :: Id
mid = Symbol :: Id -> Symbol
Symbol {symName :: Id
symName = Id
mid}

-- | convert to raw symbol
symbolToRaw :: Symbol -> Symbol
symbolToRaw :: Symbol -> Symbol
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-- | does a smybol match a raw symbol?
matches :: Symbol -> Symbol -> Bool
matches :: Symbol -> Symbol -> Bool
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-- | application function for Symbol Maps
applySymMap :: Map.Map Symbol Symbol -> Symbol -> Symbol
applySymMap :: Map Symbol Symbol -> Symbol -> Symbol
applySymMap smap :: Map Symbol Symbol
smap idt :: Symbol
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