{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE GeneralizedNewtypeDeriving #-}

module Data.RDF.State where

import           Control.Monad.State
import           Data.RDF            (RDF, Rdf, PrefixMappings, BaseUrl, Triples, Triple, NodeSelector)
import qualified Data.RDF            as RDF

-- | StateT monad which allows to combine more easily functions from 'Rdf'
-- typeclass, eg.:
--
-- @
-- import Data.RDF
-- import qualified Data.RDF.State as RDFS
--
-- main :: IO ()
-- main = do
--   let myEmptyGraph = empty :: RDF TList
--   newGraph <- execStateT (unRdfST createGraph) myEmptyGraph
--   putStrLn (showGraph newGraph)
--
-- createGraph :: (Rdf rdfImpl, Monad m) => RdfST rdfImpl m ()
-- createGraph = do
--   -- add a triple to the empty graph
--   let triple1 = triple (unode "http://www.example.com/rob")
--                        (unode "http://xmlns.com/foaf/0.1/interest")
--                        (unode "http://dbpedia.org/resource/Scotch_whisky")
--   RDFS.addTriple triple1
--
--   -- add another triple to the graph
--   let triple2 = triple (unode "http://www.example.com/rob")
--                        (unode "http://xmlns.com/foaf/0.1/interest")
--                        (unode "http://dbpedia.org/resource/Haskell_(programming_language)")
--   RDFS.addTriple triple2
--
--   -- remove one of my interests
--   RDFS.removeTriple triple1
-- @
newtype RdfST rdfImpl m a = RdfST { RdfST rdfImpl m a -> StateT (RDF rdfImpl) m a
unRdfST :: StateT (RDF rdfImpl) m a }
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-- | Same as 'Data.RDF.Types.baseUrl'
baseUrl
  :: (Rdf rdfImpl, Monad m)
  => RdfST rdfImpl m (Maybe BaseUrl)
baseUrl :: RdfST rdfImpl m (Maybe BaseUrl)
baseUrl = (RDF rdfImpl -> Maybe BaseUrl) -> RdfST rdfImpl m (Maybe BaseUrl)
forall s (m :: * -> *) a. MonadState s m => (s -> a) -> m a
gets RDF rdfImpl -> Maybe BaseUrl
forall rdfImpl. Rdf rdfImpl => RDF rdfImpl -> Maybe BaseUrl
RDF.baseUrl

-- | Same as 'Data.RDF.Types.prefixMappings'
prefixMappings
  :: (Rdf rdfImpl, Monad m)
  => RdfST rdfImpl m PrefixMappings
prefixMappings :: RdfST rdfImpl m PrefixMappings
prefixMappings = (RDF rdfImpl -> PrefixMappings) -> RdfST rdfImpl m PrefixMappings
forall s (m :: * -> *) a. MonadState s m => (s -> a) -> m a
gets RDF rdfImpl -> PrefixMappings
forall rdfImpl. Rdf rdfImpl => RDF rdfImpl -> PrefixMappings
RDF.prefixMappings

-- | Same as 'Data.RDF.Types.addPrefixMappings', but with the Bool arg as False
addPrefixMappings
  :: (Rdf rdfImpl, Monad m)
  => PrefixMappings
  -> RdfST rdfImpl m ()
addPrefixMappings :: PrefixMappings -> RdfST rdfImpl m ()
addPrefixMappings PrefixMappings
mappings =
  RdfST rdfImpl m (RDF rdfImpl)
forall s (m :: * -> *). MonadState s m => m s
get RdfST rdfImpl m (RDF rdfImpl)
-> (RDF rdfImpl -> RdfST rdfImpl m ()) -> RdfST rdfImpl m ()
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= \RDF rdfImpl
graph -> RDF rdfImpl -> RdfST rdfImpl m ()
forall s (m :: * -> *). MonadState s m => s -> m ()
put (RDF rdfImpl -> RdfST rdfImpl m ())
-> RDF rdfImpl -> RdfST rdfImpl m ()
forall a b. (a -> b) -> a -> b
$ RDF rdfImpl -> PrefixMappings -> Bool -> RDF rdfImpl
forall rdfImpl.
Rdf rdfImpl =>
RDF rdfImpl -> PrefixMappings -> Bool -> RDF rdfImpl
RDF.addPrefixMappings RDF rdfImpl
graph PrefixMappings
mappings Bool
False

-- | Same as 'Data.RDF.Types.addPrefixMappings', but with the Bool arg as True
replacePrefixMappings
  :: (Rdf rdfImpl, Monad m)
  => PrefixMappings
  -> RdfST rdfImpl m ()
replacePrefixMappings :: PrefixMappings -> RdfST rdfImpl m ()
replacePrefixMappings PrefixMappings
mappings =
  RdfST rdfImpl m (RDF rdfImpl)
forall s (m :: * -> *). MonadState s m => m s
get RdfST rdfImpl m (RDF rdfImpl)
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>>= \RDF rdfImpl
graph -> RDF rdfImpl -> RdfST rdfImpl m ()
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put (RDF rdfImpl -> RdfST rdfImpl m ())
-> RDF rdfImpl -> RdfST rdfImpl m ()
forall a b. (a -> b) -> a -> b
$ RDF rdfImpl -> PrefixMappings -> Bool -> RDF rdfImpl
forall rdfImpl.
Rdf rdfImpl =>
RDF rdfImpl -> PrefixMappings -> Bool -> RDF rdfImpl
RDF.addPrefixMappings RDF rdfImpl
graph PrefixMappings
mappings Bool
True

-- | Same as 'Data.RDF.Types.empty'
empty
  :: (Rdf rdfImpl, Monad m)
  => RdfST rdfImpl m ()
empty :: RdfST rdfImpl m ()
empty = RDF rdfImpl -> RdfST rdfImpl m ()
forall s (m :: * -> *). MonadState s m => s -> m ()
put RDF rdfImpl
forall rdfImpl. Rdf rdfImpl => RDF rdfImpl
RDF.empty

-- | Same as 'Data.RDF.Types.mkRdf'
mkRdf
  :: (Rdf rdfImpl, Monad m)
  => Triples
  -> Maybe BaseUrl
  -> PrefixMappings
  -> RdfST rdfImpl m ()
mkRdf :: Triples -> Maybe BaseUrl -> PrefixMappings -> RdfST rdfImpl m ()
mkRdf Triples
triples Maybe BaseUrl
baseUrlMaybe PrefixMappings
mappings =
  RDF rdfImpl -> RdfST rdfImpl m ()
forall s (m :: * -> *). MonadState s m => s -> m ()
put (RDF rdfImpl -> RdfST rdfImpl m ())
-> RDF rdfImpl -> RdfST rdfImpl m ()
forall a b. (a -> b) -> a -> b
$ Triples -> Maybe BaseUrl -> PrefixMappings -> RDF rdfImpl
forall rdfImpl.
Rdf rdfImpl =>
Triples -> Maybe BaseUrl -> PrefixMappings -> RDF rdfImpl
RDF.mkRdf Triples
triples Maybe BaseUrl
baseUrlMaybe PrefixMappings
mappings

-- | Same as 'Data.RDF.Types.addTriple'
addTriple
  :: (Rdf rdfImpl, Monad m)
  => Triple -> RdfST rdfImpl m ()
addTriple :: Triple -> RdfST rdfImpl m ()
addTriple Triple
triple = RdfST rdfImpl m (RDF rdfImpl)
forall s (m :: * -> *). MonadState s m => m s
get RdfST rdfImpl m (RDF rdfImpl)
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graph -> RDF rdfImpl -> RdfST rdfImpl m ()
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put (RDF rdfImpl -> RdfST rdfImpl m ())
-> RDF rdfImpl -> RdfST rdfImpl m ()
forall a b. (a -> b) -> a -> b
$ RDF rdfImpl -> Triple -> RDF rdfImpl
forall rdfImpl. Rdf rdfImpl => RDF rdfImpl -> Triple -> RDF rdfImpl
RDF.addTriple RDF rdfImpl
graph Triple
triple

-- | Same as 'Data.RDF.Types.removeTriple'
removeTriple
  :: (Rdf rdfImpl, Monad m)
  => Triple -> RdfST rdfImpl m ()
removeTriple :: Triple -> RdfST rdfImpl m ()
removeTriple Triple
triple = RdfST rdfImpl m (RDF rdfImpl)
forall s (m :: * -> *). MonadState s m => m s
get RdfST rdfImpl m (RDF rdfImpl)
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graph -> RDF rdfImpl -> RdfST rdfImpl m ()
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put (RDF rdfImpl -> RdfST rdfImpl m ())
-> RDF rdfImpl -> RdfST rdfImpl m ()
forall a b. (a -> b) -> a -> b
$ RDF rdfImpl -> Triple -> RDF rdfImpl
forall rdfImpl. Rdf rdfImpl => RDF rdfImpl -> Triple -> RDF rdfImpl
RDF.removeTriple RDF rdfImpl
graph Triple
triple

-- | Same as 'Data.RDF.Types.triplesOf'
triplesOf
  :: (Rdf rdfImpl, Monad m)
  => RdfST rdfImpl m Triples
triplesOf :: RdfST rdfImpl m Triples
triplesOf = (RDF rdfImpl -> Triples) -> RdfST rdfImpl m Triples
forall s (m :: * -> *) a. MonadState s m => (s -> a) -> m a
gets RDF rdfImpl -> Triples
forall rdfImpl. Rdf rdfImpl => RDF rdfImpl -> Triples
RDF.triplesOf

-- | Same as 'Data.RDF.Types.uniqTriplesOf'
uniqTriplesOf
  :: (Rdf rdfImpl, Monad m)
  => RdfST rdfImpl m Triples
uniqTriplesOf :: RdfST rdfImpl m Triples
uniqTriplesOf = (RDF rdfImpl -> Triples) -> RdfST rdfImpl m Triples
forall s (m :: * -> *) a. MonadState s m => (s -> a) -> m a
gets RDF rdfImpl -> Triples
forall rdfImpl. Rdf rdfImpl => RDF rdfImpl -> Triples
RDF.uniqTriplesOf

-- | Same as 'Data.RDF.Types.select'
select
  :: (Rdf rdfImpl, Monad m)
  => NodeSelector
  -> NodeSelector
  -> NodeSelector
  -> RdfST rdfImpl m Triples
select :: NodeSelector
-> NodeSelector -> NodeSelector -> RdfST rdfImpl m Triples
select NodeSelector
s NodeSelector
p NodeSelector
o = RdfST rdfImpl m (RDF rdfImpl)
forall s (m :: * -> *). MonadState s m => m s
get RdfST rdfImpl m (RDF rdfImpl)
-> (RDF rdfImpl -> RdfST rdfImpl m Triples)
-> RdfST rdfImpl m Triples
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= \RDF rdfImpl
graph -> Triples -> RdfST rdfImpl m Triples
forall (m :: * -> *) a. Monad m => a -> m a
return (Triples -> RdfST rdfImpl m Triples)
-> Triples -> RdfST rdfImpl m Triples
forall a b. (a -> b) -> a -> b
$ RDF rdfImpl
-> NodeSelector -> NodeSelector -> NodeSelector -> Triples
forall rdfImpl.
Rdf rdfImpl =>
RDF rdfImpl
-> NodeSelector -> NodeSelector -> NodeSelector -> Triples
RDF.select RDF rdfImpl
graph NodeSelector
s NodeSelector
p NodeSelector
o

-- | Same as 'Data.RDF.Types.query'
query
  :: (Rdf rdfImpl, Monad m)
  => Maybe RDF.Node
  -> Maybe RDF.Node
  -> Maybe RDF.Node
  -> RdfST rdfImpl m Triples
query :: Maybe Node -> Maybe Node -> Maybe Node -> RdfST rdfImpl m Triples
query Maybe Node
s Maybe Node
p Maybe Node
o = RdfST rdfImpl m (RDF rdfImpl)
forall s (m :: * -> *). MonadState s m => m s
get RdfST rdfImpl m (RDF rdfImpl)
-> (RDF rdfImpl -> RdfST rdfImpl m Triples)
-> RdfST rdfImpl m Triples
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= \RDF rdfImpl
graph -> Triples -> RdfST rdfImpl m Triples
forall (m :: * -> *) a. Monad m => a -> m a
return (Triples -> RdfST rdfImpl m Triples)
-> Triples -> RdfST rdfImpl m Triples
forall a b. (a -> b) -> a -> b
$ RDF rdfImpl -> Maybe Node -> Maybe Node -> Maybe Node -> Triples
forall rdfImpl.
Rdf rdfImpl =>
RDF rdfImpl -> Maybe Node -> Maybe Node -> Maybe Node -> Triples
RDF.query RDF rdfImpl
graph Maybe Node
s Maybe Node
p Maybe Node
o

-- | Same as 'Data.RDF.Types.showGraph'
showGraph
  :: (Rdf rdfImpl, Monad m)
  => RdfST rdfImpl m String
showGraph :: RdfST rdfImpl m String
showGraph = (RDF rdfImpl -> String) -> RdfST rdfImpl m String
forall s (m :: * -> *) a. MonadState s m => (s -> a) -> m a
gets RDF rdfImpl -> String
forall rdfImpl. Rdf rdfImpl => RDF rdfImpl -> String
RDF.showGraph