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|
-- | This is the syntax for bkp files which are parsed in 'ghc --backpack'
-- mode. This syntax is used purely for testing purposes.
module BkpSyn (
-- * Backpack abstract syntax
HsUnitId(..),
LHsUnitId,
HsModuleSubst,
LHsModuleSubst,
HsModuleId(..),
LHsModuleId,
HsComponentId(..),
LHsUnit, HsUnit(..),
LHsUnitDecl, HsUnitDecl(..),
HsDeclType(..),
IncludeDecl(..),
LRenaming, Renaming(..),
) where
import GhcPrelude
import GHC.Hs
import SrcLoc
import Outputable
import Module
import PackageConfig
{-
************************************************************************
* *
User syntax
* *
************************************************************************
-}
data HsComponentId = HsComponentId {
hsPackageName :: PackageName,
hsComponentId :: ComponentId
}
instance Outputable HsComponentId where
ppr (HsComponentId _pn cid) = ppr cid -- todo debug with pn
data HsUnitId n = HsUnitId (Located n) [LHsModuleSubst n]
type LHsUnitId n = Located (HsUnitId n)
type HsModuleSubst n = (Located ModuleName, LHsModuleId n)
type LHsModuleSubst n = Located (HsModuleSubst n)
data HsModuleId n = HsModuleVar (Located ModuleName)
| HsModuleId (LHsUnitId n) (Located ModuleName)
type LHsModuleId n = Located (HsModuleId n)
-- | Top level @unit@ declaration in a Backpack file.
data HsUnit n = HsUnit {
hsunitName :: Located n,
hsunitBody :: [LHsUnitDecl n]
}
type LHsUnit n = Located (HsUnit n)
-- | A declaration in a package, e.g. a module or signature definition,
-- or an include.
data HsDeclType = ModuleD | SignatureD
data HsUnitDecl n
= DeclD HsDeclType (Located ModuleName) (Maybe (Located (HsModule GhcPs)))
| IncludeD (IncludeDecl n)
type LHsUnitDecl n = Located (HsUnitDecl n)
-- | An include of another unit
data IncludeDecl n = IncludeDecl {
idUnitId :: LHsUnitId n,
idModRenaming :: Maybe [ LRenaming ],
-- | Is this a @dependency signature@ include? If so,
-- we don't compile this include when we instantiate this
-- unit (as there should not be any modules brought into
-- scope.)
idSignatureInclude :: Bool
}
-- | Rename a module from one name to another. The identity renaming
-- means that the module should be brought into scope.
data Renaming = Renaming { renameFrom :: Located ModuleName
, renameTo :: Maybe (Located ModuleName) }
type LRenaming = Located Renaming
|
