SourceInfo.hs

{-# LANGUAGE GADTs #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE UndecidableInstances #-}
{-# LANGUAGE MultiParamTypeClasses #-}

--
-- Copyright (c) 2009-2011, ERICSSON AB
-- All rights reserved.
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-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions are met:
--
--     * Redistributions of source code must retain the above copyright notice,
--       this list of conditions and the following disclaimer.
--     * Redistributions in binary form must reproduce the above copyright
--       notice, this list of conditions and the following disclaimer in the
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--     * Neither the name of the ERICSSON AB nor the names of its contributors
--       may be used to endorse or promote products derived from this software
--       without specific prior written permission.
--
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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--

module Feldspar.Core.Constructs.SourceInfo
    ( module Language.Syntactic.Constructs.Identity
    , module Language.Syntactic.Constructs.Decoration
    , SourceInfo1 (..)
    ) where

import Language.Syntactic
import Language.Syntactic.Constructs.Decoration
import Language.Syntactic.Constructs.Identity

import Feldspar.Core.Types
import Feldspar.Core.Interpretation

-- | Kind @* -> *@ version of 'SourceInfo'
data SourceInfo1 a = SourceInfo1 SourceInfo

instance Sharable (Decor SourceInfo1 Identity)
  where
    sharable _ = True

instance Monotonic (Decor SourceInfo1 Identity)

instance Monotonic Identity

instance SizeProp Identity
  where
    sizeProp Id (WrapFull a :* Nil) = infoSize a

instance SizeProp ((Decor SourceInfo1 Identity) :|| Type)
  where
    sizeProp (C' a) = sizeProp $ decorExpr a

instance ((Decor SourceInfo1 Identity :|| Type) :<: dom, Optimize dom dom) =>
    Optimize ((Decor SourceInfo1 Identity) :|| Type) dom
  where
    optimizeFeat opts (C' (Decor (SourceInfo1 src) Id)) (a :* Nil) =
        localSource src $ optimizeM opts a

    constructFeatOpt _ (C' (Decor (SourceInfo1 _) Id)) (a :* Nil) = return a

    constructFeatUnOpt opts x@(C' _) = constructFeatUnOptDefault opts x