copyright: comply with REUSE-3.0

[haskell/symantic-parser.git] / src / Symantic / Parser / Grammar.hs

diff --git a/src/Symantic/Parser/Grammar.hs b/src/Symantic/Parser/Grammar.hs
index d95c7c6417cf500676fe884328fcba4b744e9e79..caf0c1e05f25519bce4735ced680e1853390f939 100644 (file)
--- a/src/Symantic/Parser/Grammar.hs
+++ b/src/Symantic/Parser/Grammar.hs
@@ -1,52 +1,66 @@
 {-# LANGUAGE AllowAmbiguousTypes #-} -- For grammar
-{-# LANGUAGE ConstraintKinds #-} -- For Grammar
+{-# LANGUAGE ConstraintKinds #-} -- For Grammarable
 module Symantic.Parser.Grammar
   ( module Symantic.Parser.Grammar
   , module Symantic.Parser.Grammar.Combinators
-  , module Symantic.Parser.Grammar.Fixity
   , module Symantic.Parser.Grammar.Optimize
   , module Symantic.Parser.Grammar.ObserveSharing
+  , module Symantic.Parser.Grammar.Production
   , module Symantic.Parser.Grammar.Write
   , module Symantic.Parser.Grammar.View
-  , Letable(..)
+  , Referenceable(..)
+  , Letsable(..)
   ) where
 import Symantic.Parser.Grammar.Combinators
-import Symantic.Parser.Grammar.View
-import Symantic.Parser.Grammar.Fixity
 import Symantic.Parser.Grammar.ObserveSharing
 import Symantic.Parser.Grammar.Optimize
+import Symantic.Parser.Grammar.Production
+import Symantic.Parser.Grammar.View
 import Symantic.Parser.Grammar.Write
 
+import Control.DeepSeq (NFData)
+import Data.Eq (Eq)
+import Data.Ord (Ord)
 import Data.Function ((.))
 import Data.String (String)
+import Data.Typeable (Typeable)
 import Text.Show (Show(..))
+import Language.Haskell.TH.HideName
 import qualified Language.Haskell.TH.Syntax as TH
 
--- * Class 'Grammar'
-type Grammar tok repr =
-  ( Applicable repr
-  , Alternable repr
-  , Satisfiable tok repr
-  , Letable TH.Name repr
-  , Selectable repr
-  , Matchable repr
-  , Foldable repr
-  , Lookable repr
+-- * Type 'Grammar'
+type Grammar repr = ObserveSharing TH.Name (OptimizeGrammar repr)
+
+-- ** Class 'Grammarable'
+type Grammarable tok repr =
+  ( CombAlternable repr
+  , CombApplicable repr
+  , CombFoldable repr
+  , Referenceable TH.Name repr
+  , Letsable TH.Name repr
+  , CombLookable repr
+  , CombMatchable repr
+  , CombSatisfiable tok repr
+  , CombSelectable repr
+  --, CombRegisterable repr
+  , CombRegisterableUnscoped repr
+  , Eq tok
+  , Ord tok
+  , TH.Lift tok
+  , NFData tok
+  , Show tok
+  , Typeable tok
   )
 
 -- | A usual pipeline to interpret 'Comb'inators:
 -- 'observeSharing' then 'optimizeGrammar' then a polymorphic @(repr)@.
-grammar ::
-  Grammar tok repr =>
-  ObserveSharing TH.Name
-    (OptimizeGrammar repr) a ->
-  repr a
+grammar :: Grammarable tok repr => Grammar repr a -> repr a
 grammar = optimizeGrammar . observeSharing
 
 -- | An usual pipeline to show 'Comb'inators:
 -- 'observeSharing' then 'optimizeGrammar' then 'viewGrammar' then 'show'.
-showGrammar ::
-  ObserveSharing TH.Name
-    (OptimizeGrammar (ViewGrammar showName)) a ->
-  String
-showGrammar = show . viewGrammar . optimizeGrammar . observeSharing
+showGrammar :: forall showName a tok.
+  HideableName showName =>
+  Grammarable tok (Grammar (ViewGrammar showName)) =>
+  Grammar (ViewGrammar showName) a -> String
+showGrammar = show . viewGrammar . grammar @tok