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newt/src/Lib/TopContext.newt
Steve Dunham 03ece3c480
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add constructor for unification error (6% improvement)
2026-04-04 21:05:18 -07:00

104 lines
3.6 KiB
Agda

module Lib.TopContext
import Data.IORef
import Data.SortedMap
import Data.String
import Prelude
import Lib.Common
import Lib.Types
-- TODO move the def in here (along with M) or merge this into types
-- The Monad can be its own file if we pull all of the monad update functions there.
lookup : QName -> TopContext -> Maybe TopEntry
lookup qn@(QN ns nm) top =
if ns == top.currentMod.modName
then lookupMap' qn top.currentMod.modDefs
else case lookupMap' ns top.modules of
Just mod => lookupMap' qn mod.modDefs
Nothing => Nothing
lookupImported : String TopContext -> List TopEntry
lookupImported raw top =
mapMaybe (flip lookup top) $ (QN top.currentMod.modName raw) :: map (flip QN raw) top.currentMod.modDeps
-- For repl / out of scope errors
lookupAll : String TopContext -> List TopEntry
lookupAll raw top =
mapMaybe (flip lookup top) $ (QN top.currentMod.modName raw) :: map (flip QN raw) (map fst $ toList top.modules)
lookupRaw : String -> TopContext -> Maybe TopEntry
lookupRaw raw top =
case lookupMap' (QN top.currentMod.modName raw) top.currentMod.modDefs of
Just entry => Just entry
Nothing => go top.currentMod.modDeps
where
go : List String Maybe TopEntry
go Nil = Nothing
go (ns :: nss) = case lookupMap' ns top.modules of
Nothing => go nss
Just mod => case lookupMap' (QN ns raw) mod.modDefs of
Just entry => Just entry
Nothing => go nss
instance Show TopContext where
show top = "\nContext:\n [\{ joinBy "\n" $ map (show snd) $ toList top.currentMod.modDefs}]"
emptyTop : TopContext
emptyTop = MkTop emptyMap emptyMap (emptyModCtx "" "") 0 emptyMap 0
setFlag : QName FC EFlag M Unit
setFlag name fc flag = do
top <- getTop
let (Just (MkEntry fc nm ty def flags)) = lookupMap' name top.currentMod.modDefs
| Nothing => error fc "\{show name} not declared"
modifyTop { currentMod $= { modDefs $= (updateMap name (MkEntry fc name ty def (flag :: flags)))} }
setDef : QName -> FC -> Tm -> Def List EFlag -> M Unit
setDef name fc ty def flags = do
top <- getTop
let (Nothing) = lookupMap' name top.currentMod.modDefs
| Just (MkEntry fc' nm' ty' def' _) => error fc "\{show name} is already defined at \{show fc'}"
modifyTop {currentMod $= { modDefs $= (updateMap name (MkEntry fc name ty def flags))} }
updateDef : QName -> FC -> Tm -> Def -> M Unit
updateDef name fc ty def = do
top <- getTop
let (Just (MkEntry fc' nm' ty' def' flags)) = lookupMap' name top.currentMod.modDefs
| Nothing => error fc "\{show name} not declared"
modifyTop { currentMod $= { modDefs := updateMap name (MkEntry fc' name ty def flags) top.currentMod.modDefs } }
typeName : Tm Maybe QName
typeName (Pi fc nm Explicit rig t u) = Nothing
typeName (Pi fc name icit rig t u) = typeName u
typeName (App fc t u) = typeName t
typeName (Ref _ nm) = Just nm
typeName _ = Nothing
addHint : QName M Unit
addHint qn = do
top <- getTop
case lookup qn top of
Just entry => do
let (Just tyname) = typeName entry.type
| Nothing => error entry.fc "can't find tcon name for \{show qn}"
let xs = fromMaybe Nil $ lookupMap' tyname top.hints
let hints = updateMap tyname ((qn, entry.type) :: xs) top.hints
modifyTop { hints := hints }
Nothing => pure MkUnit
addError : Error -> M Unit
addError err = modifyTop { currentMod $= { modErrors $= (err ::) } }
addInfo : EditorInfo M Unit
addInfo info = modifyTop { currentMod $= {modInfos $= (info ::) } }
-- temporary? used in derive for now
freshName : String M String
freshName nm = do
top <- getTop
modifyTop { freshIx $= 1 + }
pure $ "f$" ++ nm ++ show top.freshIx