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|
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ViewPatterns #-}
{-# LANGUAGE StrictData #-}
module HaskellCodeExplorer.AST.RenamedSource
( NameOccurrence(..)
, namesFromRenamedSource
) where
import Data.Generics ( Data
, everything
, extQ
, mkQ
)
import Data.Maybe ( mapMaybe )
import qualified Data.Text as T
( Text )
import GHC ( AmbiguousFieldOcc(..)
, ConDecl(..)
, ConDeclField(..)
, FamEqn(..)
, FamilyDecl(..)
, FieldOcc(..)
, FixitySig(..)
, ForeignDecl(..)
, FunDep(..)
, GenLocated(..)
, HsBindLR(..)
, HsBracket(..)
, HsDataDefn(..)
, HsExpr(..)
, HsMatchContext(..)
, HsPatSynDetails
, HsRecField'(..)
, HsTupleSort(..)
, HsTyLit(..)
, HsTyVarBndr(..)
, HsType(..)
, IE(..)
, InjectivityAnn(..)
, LHsBindLR
, LHsExpr
, LHsType
, LPat
, LSig
, LTyClDecl
, Located
, Match(..)
, MatchGroup(..)
, Name
, Pat(..)
, PatSynBind(..)
, RoleAnnotDecl(..)
, Sig(..)
, TyClDecl(..)
, Type
, getLocA
, reLocN
, unLoc
)
import GHC.Builtin.Types ( naturalTy
, nilDataConName
, tupleTyConName
, typeSymbolKind
)
import GHC.Data.BooleanFormula ( BooleanFormula(..) )
import GHC.Hs.Extension ( GhcRn )
import GHC.Types.Basic ( TupleSort(..) )
import GHC.Types.SrcLoc ( SrcSpan(..)
, mkRealSrcLoc
, mkRealSrcSpan
, realSrcSpanEnd
, realSrcSpanStart
, srcLocCol
, srcLocFile
, srcLocLine
)
import HaskellCodeExplorer.GhcUtils ( hsPatSynDetails
, ieLocNames
)
import Prelude hiding ( span )
data NameOccurrence
= NameOccurrence { locatedName :: Located (Maybe Name)
, description :: T.Text
, isBinder :: Bool }
| TyLitOccurrence { locatedName :: Located (Maybe Name)
, description :: T.Text
, kind :: Type }
-- | Here we are only interested in a small subset of all AST nodes, so it is
-- convenient to use generic functions
namesFromRenamedSource :: (Data a) => a -> [NameOccurrence]
namesFromRenamedSource = everything
(++)
( []
`mkQ` hsExprNames
`extQ` matchGroupNames
`extQ` bindNames
`extQ` patNames
`extQ` sigNames
`extQ` hsTypeNames
`extQ` tyClDeclNames
`extQ` familyDeclNames
`extQ` familyEqNames
`extQ` dataEqNames
`extQ` conDeclNames
`extQ` importNames
`extQ` hsTyVarBndrNames
`extQ` hsPatSynDetailsNames
`extQ` conDeclFieldNames
`extQ` hsRecFieldExprNames
`extQ` hsRecAmbFieldExprNames
`extQ` hsRecFieldPatNames
`extQ` foreignDeclNames
`extQ` roleAnnotationNames
`extQ` injectivityAnnotationNames
)
fieldOccName :: Bool -> FieldOcc GhcRn -> NameOccurrence
fieldOccName isBinder (FieldOcc name located) = NameOccurrence
{ locatedName = L (getLocA located) (Just name)
, description = "FieldOcc"
, isBinder = isBinder
}
conDeclFieldNames :: ConDeclField GhcRn -> [NameOccurrence]
conDeclFieldNames ConDeclField {..} =
map (fieldOccName True . unLoc) cd_fld_names
hsRecFieldExprNames
:: HsRecField' (FieldOcc GhcRn) (LHsExpr GhcRn) -> [NameOccurrence]
hsRecFieldExprNames HsRecField {..} =
[fieldOccName False $ unLoc hsRecFieldLbl]
hsRecAmbFieldExprNames
:: HsRecField' (AmbiguousFieldOcc GhcRn) (LHsExpr GhcRn) -> [NameOccurrence]
hsRecAmbFieldExprNames HsRecField {..} =
let (L span recField) = hsRecFieldLbl
mbName = case recField of
Ambiguous _ _ -> Nothing
Unambiguous name _ -> Just name
in [ NameOccurrence { locatedName = L span mbName
, description = "AmbiguousFieldOcc"
, isBinder = False
}
]
hsRecFieldPatNames
:: HsRecField' (FieldOcc GhcRn) (LPat GhcRn) -> [NameOccurrence]
hsRecFieldPatNames HsRecField {..} = [fieldOccName False $ unLoc hsRecFieldLbl]
hsExprNames :: LHsExpr GhcRn -> [NameOccurrence]
hsExprNames (L _span (HsVar _ name)) =
[ NameOccurrence { locatedName = Just <$> reLocN name
, description = "HsVar"
, isBinder = False
}
]
hsExprNames lhe@(L _ (ExplicitList _ exprs))
| null exprs
= [ NameOccurrence { locatedName = L (getLocA lhe) $ Just nilDataConName
, description = "ExplicitList"
, isBinder = False
}
]
| otherwise
= []
hsExprNames (L _span (RecordCon _ name _)) =
[ NameOccurrence { locatedName = Just <$> reLocN name
, description = "RecordCon"
, isBinder = False
}
]
hsExprNames (L _span (HsRecFld _ (Unambiguous name located))) =
[ NameOccurrence { locatedName = L (getLocA located) (Just name)
, description = "HsRecFld"
, isBinder = False
}
]
hsExprNames (L _span (HsRecFld _ (Ambiguous _name located))) =
[ NameOccurrence { locatedName = L (getLocA located) Nothing
, description = "HsRecFld"
, isBinder = False
}
]
hsExprNames lhr@(L _ (HsRnBracketOut _ (VarBr _ quote name) _)) =
case getLocA lhr of
RealSrcSpan realSpan _ ->
let
start = realSrcSpanStart realSpan
end = realSrcSpanEnd realSpan
offset = if quote
then 1 -- 'x
else 2 -- ''T
start' = mkRealSrcLoc (srcLocFile start)
(srcLocLine start)
(srcLocCol start + offset)
span' = RealSrcSpan (mkRealSrcSpan start' end) Nothing
in
[ NameOccurrence { locatedName = L span' (Just $ unLoc name)
, description = "VarBr"
, isBinder = False
}
]
_ -> []
hsExprNames _ = []
matchGroupNames :: MatchGroup GhcRn (LHsExpr GhcRn) -> [NameOccurrence]
matchGroupNames =
mapMaybe (fmap toNameOcc . matchContextName . m_ctxt . unLoc)
. unLoc
. mg_alts
where
--matchContextName :: HsMatchContext Name -> Maybe (Located Name)
matchContextName (FunRhs name _ _bool) = Just name
matchContextName _ = Nothing
--toNameOcc :: LIdP GhcRn -> NameOccurrence
toNameOcc n = NameOccurrence { locatedName = Just <$> reLocN n
, description = "Match"
, isBinder = True
}
bindNames :: LHsBindLR GhcRn GhcRn -> [NameOccurrence]
bindNames (L _span (PatSynBind _ PSB {..})) =
[ NameOccurrence { locatedName = Just <$> reLocN psb_id
, description = "PatSynBind"
, isBinder = True
}
]
bindNames _ = []
hsPatSynDetailsNames :: HsPatSynDetails GhcRn -> [NameOccurrence]
hsPatSynDetailsNames =
map
(\name -> NameOccurrence { locatedName = Just <$> name
, description = "HsPatSynDetails"
, isBinder = True
}
)
. hsPatSynDetails
importNames :: IE GhcRn -> [NameOccurrence]
importNames =
map
(\name -> NameOccurrence { locatedName = Just <$> name
, description = "IE"
, isBinder = False
}
)
. ieLocNames
patNames :: LPat GhcRn -> [NameOccurrence]
patNames (L _span (VarPat _ name)) =
[ NameOccurrence { locatedName = Just <$> reLocN name
, description = "VarPat"
, isBinder = True
}
]
patNames (L _span (ConPat _ name _)) =
[ NameOccurrence { locatedName = Just <$> reLocN name
, description = "ConPatIn"
, isBinder = False
}
]
patNames (L _span (AsPat _ name _)) =
[ NameOccurrence { locatedName = Just <$> reLocN name
, description = "AsPat"
, isBinder = True
}
]
patNames (L _span (NPlusKPat _ name _ _ _ _)) =
[ NameOccurrence { locatedName = Just <$> reLocN name
, description = "NPlusKPat"
, isBinder = True
}
]
patNames _ = []
sigNames :: LSig GhcRn -> [NameOccurrence]
sigNames (L _span (TypeSig _ names _)) = map
(\n -> NameOccurrence { locatedName = Just <$> reLocN n
, description = "TypeSig"
, isBinder = False
}
)
names
sigNames (L _span (PatSynSig _ names _)) =
map (\name -> NameOccurrence (Just <$> reLocN name) "PatSynSig" False) names
sigNames (L _span (ClassOpSig _ _ names _)) = map
(\n -> NameOccurrence { locatedName = Just <$> reLocN n
, description = "ClassOpSig"
, isBinder = True
}
)
names
sigNames (L _span (FixSig _ (FixitySig _ names _))) = map
(\n -> NameOccurrence { locatedName = Just <$> reLocN n
, description = "FixitySig"
, isBinder = False
}
)
names
sigNames (L _span (InlineSig _ name _)) =
[ NameOccurrence { locatedName = Just <$> reLocN name
, description = "InlineSig"
, isBinder = False
}
]
sigNames (L _span (SpecSig _ name _ _)) =
[ NameOccurrence { locatedName = Just <$> reLocN name
, description = "SpecSig"
, isBinder = False
}
]
sigNames (L _span (MinimalSig _ _ (L _ boolFormula))) =
map
(\n -> NameOccurrence { locatedName = Just <$> reLocN n
, description = "MinimalSig"
, isBinder = False
}
)
. boolFormulaNames
$ boolFormula
where
boolFormulaNames :: BooleanFormula name -> [name]
boolFormulaNames (Var a ) = [a]
boolFormulaNames (And fs ) = concatMap (boolFormulaNames . unLoc) fs
boolFormulaNames (Or fs ) = concatMap (boolFormulaNames . unLoc) fs
boolFormulaNames (Parens (L _ f)) = boolFormulaNames f
sigNames (L _ _) = []
hsTypeNames :: LHsType GhcRn -> [NameOccurrence]
hsTypeNames (L _span (HsTyVar _ _promoted name)) =
[ NameOccurrence { locatedName = Just <$> reLocN name
, description = "HsTyVar"
, isBinder = False
}
]
hsTypeNames lht@(L _ (HsTyLit _ lit)) =
let kind = case lit of
HsNumTy _ _ -> naturalTy
HsStrTy _ _ -> typeSymbolKind
HsCharTy _ _ -> typeSymbolKind
in [ TyLitOccurrence { locatedName = L (getLocA lht) Nothing
, description = "HsTyLit"
, kind = kind
}
]
hsTypeNames (L _span (HsOpTy _ _ name _)) =
[ NameOccurrence { locatedName = Just <$> reLocN name
, description = "HsOpTy"
, isBinder = False
}
]
hsTypeNames lht@(L _ (HsTupleTy _ tupleSort types))
| null types
= let sort = case tupleSort of
HsUnboxedTuple -> UnboxedTuple
HsBoxedOrConstraintTuple -> BoxedTuple
in [ NameOccurrence
{ locatedName = L (getLocA lht) (Just $ tupleTyConName sort 0)
, description = "HsTupleTy"
, isBinder = False
}
]
| otherwise
= []
--https://ghc.haskell.org/trac/ghc/ticket/13737
--hsTypeNames (L span (HsExplicitListTy _kind types)) = ...
--hsTypeNames (L span (HsExplicitTupleTy _kind types)) = ...
hsTypeNames _ = []
-- the flag in HsTyVarBndr flag GhcRn can be either () (for visible
-- cases) or Specificity (for invisible cases). I'm guessing we only
-- need to handle the visible cases, but it's trivial to replicate
-- this function for invisible cases
hsTyVarBndrNames :: HsTyVarBndr () GhcRn -> [NameOccurrence]
hsTyVarBndrNames (UserTyVar _ _ n) =
[ NameOccurrence { locatedName = Just <$> reLocN n
, description = "UserTyVar"
, isBinder = True
}
]
hsTyVarBndrNames (KindedTyVar _ _ n _) =
[ NameOccurrence { locatedName = Just <$> reLocN n
, description = "KindedTyVar"
, isBinder = True
}
]
tyClDeclNames :: LTyClDecl GhcRn -> [NameOccurrence]
tyClDeclNames (L _span DataDecl {..}) =
[ NameOccurrence { locatedName = Just <$> reLocN tcdLName
, description = "DataDecl"
, isBinder = True
}
]
tyClDeclNames (L _span SynDecl {..}) =
[ NameOccurrence { locatedName = Just <$> reLocN tcdLName
, description = "SynDecl"
, isBinder = True
}
]
tyClDeclNames (L _span ClassDecl {..}) =
NameOccurrence { locatedName = Just <$> reLocN tcdLName
, description = "ClassDecl"
, isBinder = True
}
: concatMap (go . unLoc) tcdFDs
where
-- toNameOcc :: Located Name -> NameOccurrence
toNameOcc n = NameOccurrence { locatedName = Just <$> reLocN n
, description = "FunDep"
, isBinder = False
}
go (FunDep _ names1 names2) = map toNameOcc names1 ++ map toNameOcc names2
go _ = []
tyClDeclNames _ = []
familyDeclNames :: FamilyDecl GhcRn -> [NameOccurrence]
familyDeclNames FamilyDecl {..} =
[ NameOccurrence { locatedName = Just <$> reLocN fdLName
, description = "FamilyDecl"
, isBinder = True
}
]
familyEqNames :: FamEqn GhcRn (LHsType GhcRn) -> [NameOccurrence]
familyEqNames FamEqn { feqn_tycon = tyCon } =
[ NameOccurrence { locatedName = Just <$> reLocN tyCon
, description = "FamEqn"
, isBinder = False
}
]
dataEqNames :: FamEqn GhcRn (HsDataDefn GhcRn) -> [NameOccurrence]
dataEqNames FamEqn { feqn_tycon = tyCon } =
[ NameOccurrence { locatedName = Just <$> reLocN tyCon
, description = "FamEqn"
, isBinder = False
}
]
conDeclNames :: ConDecl GhcRn -> [NameOccurrence]
conDeclNames con = case con of
ConDeclGADT { con_names = names } -> map
(\n -> NameOccurrence { locatedName = Just <$> reLocN n
, description = "ConDeclGADT"
, isBinder = True
}
)
names
ConDeclH98 { con_name = name } ->
[ NameOccurrence { locatedName = Just <$> reLocN name
, description = "ConDeclH98"
, isBinder = True
}
]
foreignDeclNames :: ForeignDecl GhcRn -> [NameOccurrence]
foreignDeclNames decl =
[ NameOccurrence { locatedName = Just <$> reLocN (fd_name decl)
, description = "ForeignDecl"
, isBinder = True
}
]
roleAnnotationNames :: RoleAnnotDecl GhcRn -> [NameOccurrence]
roleAnnotationNames (RoleAnnotDecl _ n _) =
[ NameOccurrence { locatedName = Just <$> reLocN n
, description = "RoleAnnotDecl"
, isBinder = False
}
]
injectivityAnnotationNames :: InjectivityAnn GhcRn -> [NameOccurrence]
injectivityAnnotationNames (InjectivityAnn _ lhsName rhsNames) =
injAnnNameOcc lhsName : map injAnnNameOcc rhsNames
where
-- injAnnNameOcc :: GenLocated SrcSpan Name -> NameOccurrence
injAnnNameOcc n = NameOccurrence { locatedName = Just <$> reLocN n
, description = "InjectivityAnn"
, isBinder = False
}
|