58 lines
2.2 KiB
Haskell
58 lines
2.2 KiB
Haskell
{-# OPTIONS_GHC -W #-}
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module Build.Source (build) where
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import qualified Data.Map as Map
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import qualified Data.Set as Set
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import System.FilePath as FP
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import Text.PrettyPrint (Doc)
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import SourceSyntax.Declaration
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import SourceSyntax.Module
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import qualified SourceSyntax.Expression as Expr
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import qualified SourceSyntax.Pattern as Pattern
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import qualified SourceSyntax.Type as Type
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import qualified Parse.Parse as Parse
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import qualified Metadata.Prelude as Prelude
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import qualified Transform.Check as Check
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import qualified Transform.SortDefinitions as SD
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import qualified Type.Inference as TI
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import qualified Type.Constrain.Declaration as TcDecl
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import qualified Transform.Canonicalize as Canonical
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build :: Bool -> Interfaces -> String -> Either [Doc] MetadataModule
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build noPrelude interfaces source =
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do let add = Prelude.add noPrelude
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infixes = Map.fromList . map (\(assoc,lvl,op) -> (op,(lvl,assoc)))
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. concatMap iFixities $ Map.elems interfaces
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Module names exs ims decls <- do
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modul@(Module _ _ _ decls) <- add `fmap` Parse.program infixes source
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case Check.mistakes decls of
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[] -> return modul
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ms -> Left ms
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let exports'
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| null exs =
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let get = Set.toList . Pattern.boundVars in
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concat [ get pattern | Definition (Expr.Definition pattern _ _) <- decls ] ++
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concat [ map fst ctors | Datatype _ _ ctors _ <- decls ] ++
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[ name | TypeAlias name _ (Type.Record _ _) _ <- decls ]
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| otherwise = exs
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metaModule <- Canonical.metadataModule interfaces $
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MetadataModule
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{ names = names
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, path = FP.joinPath names
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, exports = exports'
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, imports = ims
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-- reorder AST into strongly connected components
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, program = SD.sortDefs . Expr.dummyLet $ TcDecl.toExpr decls
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, types = Map.empty
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, datatypes = [ (name,vars,ctors,ds) | Datatype name vars ctors ds <- decls ]
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, fixities = [ (assoc,level,op) | Fixity assoc level op <- decls ]
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, aliases = [ (name,tvs,tipe,ds) | TypeAlias name tvs tipe ds <- decls ]
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}
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types <- TI.infer interfaces metaModule
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return $ metaModule { types = types }
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