{-# LANGUAGE NondecreasingIndentation #-}

module Agda.TypeChecking.Rules.Term where

import Prelude hiding ( null )

import Control.Monad         ( (<=<), forM )
import Control.Monad.Except

import Data.Maybe
import Data.Either (partitionEithers, lefts)
import qualified Data.List as List
import qualified Data.Map as Map
import qualified Data.Set as Set

import Agda.Interaction.Options
import Agda.Interaction.Highlighting.Generate (disambiguateRecordFields)

import Agda.Syntax.Abstract (Binder, TypedBindingInfo (tbTacticAttr))
import qualified Agda.Syntax.Abstract as A
import Agda.Syntax.Abstract.Views as A
import qualified Agda.Syntax.Info as A
import Agda.Syntax.Concrete.Pretty () -- only Pretty instances
import Agda.Syntax.Concrete (FieldAssignment'(..), nameFieldA)
import qualified Agda.Syntax.Concrete.Name as C
import Agda.Syntax.Common
import Agda.Syntax.Internal as I
import Agda.Syntax.Internal.MetaVars
import Agda.Syntax.Position
import Agda.Syntax.Literal
import Agda.Syntax.Scope.Base ( ThingsInScope, AbstractName
                              , emptyScopeInfo
                              , exportedNamesInScope)
import Agda.Syntax.Scope.Monad (getNamedScope)

import Agda.TypeChecking.CompiledClause
import Agda.TypeChecking.Constraints
import Agda.TypeChecking.Conversion
import Agda.TypeChecking.Coverage.SplitTree
import Agda.TypeChecking.Datatypes
import Agda.TypeChecking.EtaContract
import Agda.TypeChecking.Generalize
import Agda.TypeChecking.Implicit
import Agda.TypeChecking.Irrelevance
import Agda.TypeChecking.IApplyConfluence
import Agda.TypeChecking.Level
import Agda.TypeChecking.MetaVars
import Agda.TypeChecking.Monad
import Agda.TypeChecking.Patterns.Abstract
import Agda.TypeChecking.Positivity.Occurrence
import Agda.TypeChecking.Pretty
import Agda.TypeChecking.Primitive
import Agda.TypeChecking.Quote
import Agda.TypeChecking.RecordPatterns
import Agda.TypeChecking.Records
import Agda.TypeChecking.Reduce
import Agda.TypeChecking.Rules.LHS
import Agda.TypeChecking.SizedTypes
import Agda.TypeChecking.SizedTypes.Solve
import Agda.TypeChecking.Sort
import Agda.TypeChecking.Substitute
import Agda.TypeChecking.Telescope
import Agda.TypeChecking.Unquote
import Agda.TypeChecking.Warnings

import {-# SOURCE #-} Agda.TypeChecking.Empty ( ensureEmptyType )
import {-# SOURCE #-} Agda.TypeChecking.Rules.Def (checkFunDef', useTerPragma)
import {-# SOURCE #-} Agda.TypeChecking.Rules.Decl (checkSectionApplication)
import {-# SOURCE #-} Agda.TypeChecking.Rules.Application

import Agda.Utils.Function ( applyWhen )
import Agda.Utils.Functor
import Agda.Utils.Lens
import Agda.Utils.List1  ( List1, pattern (:|) )
import qualified Agda.Utils.List1 as List1
import Agda.Utils.Maybe
import Agda.Utils.Monad
import Agda.Utils.Null
import Agda.Syntax.Common.Pretty ( prettyShow )
import qualified Agda.Syntax.Common.Pretty as P
import Agda.Utils.Singleton
import Agda.Utils.Size
import Agda.Utils.Tuple

import Agda.Utils.Impossible

---------------------------------------------------------------------------
-- * Types
---------------------------------------------------------------------------

-- | Check that an expression is a type.
isType :: A.Expr -> Sort -> TCM Type
isType :: Expr -> Sort' Term -> TCM Type
isType = Comparison -> Expr -> Sort' Term -> TCM Type
isType' Comparison
CmpLeq

-- | Check that an expression is a type.
--   * If @c == CmpEq@, the given sort must be the minimal sort.
--   * If @c == CmpLeq@, the given sort may be any bigger sort.
isType' :: Comparison -> A.Expr -> Sort -> TCM Type
isType' :: Comparison -> Expr -> Sort' Term -> TCM Type
isType' Comparison
c Expr
e Sort' Term
s =
    Call -> TCM Type -> TCM Type
forall a. Call -> TCMT IO a -> TCMT IO a
forall (m :: * -> *) a. MonadTrace m => Call -> m a -> m a
traceCall (Comparison -> Expr -> Sort' Term -> Call
IsTypeCall Comparison
c Expr
e Sort' Term
s) (TCM Type -> TCM Type) -> TCM Type -> TCM Type
forall a b. (a -> b) -> a -> b
$ do
    Term
v <- Comparison -> Expr -> Type -> TCM Term
checkExpr' Comparison
c Expr
e (Sort' Term -> Type
sort Sort' Term
s)
    Type -> TCM Type
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Type -> TCM Type) -> Type -> TCM Type
forall a b. (a -> b) -> a -> b
$ Sort' Term -> Term -> Type
forall t a. Sort' t -> a -> Type'' t a
El Sort' Term
s Term
v

-- | Check that an expression is a type and infer its (minimal) sort.
isType_ :: A.Expr -> TCM Type
isType_ :: Expr -> TCM Type
isType_ Expr
e = Call -> TCM Type -> TCM Type
forall a. Call -> TCMT IO a -> TCMT IO a
forall (m :: * -> *) a. MonadTrace m => Call -> m a -> m a
traceCall (Expr -> Call
IsType_ Expr
e) (TCM Type -> TCM Type) -> TCM Type -> TCM Type
forall a b. (a -> b) -> a -> b
$ do
  ArgName -> Int -> (Type -> TCMT IO Doc) -> TCM Type -> TCM Type
forall (m :: * -> *) a.
MonadDebug m =>
ArgName -> Int -> (a -> TCMT IO Doc) -> m a -> m a
reportResult ArgName
"tc.term.istype" Int
15 (\Type
a -> [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
    [ TCMT IO Doc
"isType_" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<?> Expr -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Expr -> m Doc
prettyTCM Expr
e
    , Int -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Functor m => Int -> m Doc -> m Doc
nest Int
2 (TCMT IO Doc -> TCMT IO Doc) -> TCMT IO Doc -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ TCMT IO Doc
"returns" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<?> Type -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Type -> m Doc
prettyTCM Type
a
    ]) (TCM Type -> TCM Type) -> TCM Type -> TCM Type
forall a b. (a -> b) -> a -> b
$ do
  let fallback :: TCM Type
fallback = Comparison -> Expr -> Sort' Term -> TCM Type
isType' Comparison
CmpEq Expr
e (Sort' Term -> TCM Type) -> TCMT IO (Sort' Term) -> TCM Type
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< do TCMT IO (Sort' Term) -> TCMT IO (Sort' Term)
forall (m :: * -> *) a.
(MonadTCEnv m, HasOptions m, MonadDebug m) =>
m a -> m a
workOnTypes (TCMT IO (Sort' Term) -> TCMT IO (Sort' Term))
-> TCMT IO (Sort' Term) -> TCMT IO (Sort' Term)
forall a b. (a -> b) -> a -> b
$ TCMT IO (Sort' Term)
forall (m :: * -> *). MonadMetaSolver m => m (Sort' Term)
newSortMeta
  SortKit{QName -> Maybe (UnivSize, Univ)
UnivSize -> Univ -> QName
nameOfUniv :: UnivSize -> Univ -> QName
isNameOfUniv :: QName -> Maybe (UnivSize, Univ)
nameOfUniv :: SortKit -> UnivSize -> Univ -> QName
isNameOfUniv :: SortKit -> QName -> Maybe (UnivSize, Univ)
..} <- TCMT IO SortKit
forall (m :: * -> *).
(HasBuiltins m, MonadTCError m, HasOptions m) =>
m SortKit
sortKit
  case Expr -> Expr
unScope Expr
e of
    A.Fun ExprInfo
i (Arg ArgInfo
info Expr
t) Expr
b -> do
      Dom Type
a <- ArgInfo -> Dom Type -> Dom Type
forall a. LensArgInfo a => ArgInfo -> a -> a
setArgInfo ArgInfo
info (Dom Type -> Dom Type) -> (Type -> Dom Type) -> Type -> Dom Type
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Type -> Dom Type
forall a. a -> Dom a
defaultDom (Type -> Dom Type) -> TCM Type -> TCMT IO (Dom Type)
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> List1 ArgInfo -> Expr -> TCM Type
forall a.
(LensLock a, LensModality a) =>
List1 a -> Expr -> TCM Type
checkPiDomain (ArgInfo
info ArgInfo -> [ArgInfo] -> List1 ArgInfo
forall a. a -> [a] -> NonEmpty a
:| []) Expr
t
      Type
b <- Expr -> TCM Type
isType_ Expr
b
      Sort' Term
s <- Dom Type -> Sort' Term -> TCMT IO (Sort' Term)
forall (m :: * -> *).
(PureTCM m, MonadConstraint m) =>
Dom Type -> Sort' Term -> m (Sort' Term)
inferFunSort Dom Type
a (Type -> Sort' Term
forall a. LensSort a => a -> Sort' Term
getSort Type
b)
      let t' :: Type
t' = Sort' Term -> Term -> Type
forall t a. Sort' t -> a -> Type'' t a
El Sort' Term
s (Term -> Type) -> Term -> Type
forall a b. (a -> b) -> a -> b
$ Dom Type -> Abs Type -> Term
Pi Dom Type
a (Abs Type -> Term) -> Abs Type -> Term
forall a b. (a -> b) -> a -> b
$ ArgName -> Type -> Abs Type
forall a. ArgName -> a -> Abs a
NoAbs ArgName
forall a. Underscore a => a
underscore Type
b
      Type -> TCM ()
checkTelePiSort Type
t'
      --noFunctionsIntoSize t'
      Type -> TCM Type
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Type
t'
    A.Pi ExprInfo
_ Telescope1
tel Expr
e -> do
      (Type
t0, Type
t') <- Telescope -> (Telescope -> TCM (Type, Type)) -> TCM (Type, Type)
forall a. Telescope -> (Telescope -> TCM a) -> TCM a
checkPiTelescope (Telescope1 -> [Item Telescope1]
forall l. IsList l => l -> [Item l]
List1.toList Telescope1
tel) ((Telescope -> TCM (Type, Type)) -> TCM (Type, Type))
-> (Telescope -> TCM (Type, Type)) -> TCM (Type, Type)
forall a b. (a -> b) -> a -> b
$ \ Telescope
tel -> do
        Type
t0  <- Type -> TCM Type
forall a (m :: * -> *).
(InstantiateFull a, MonadReduce m) =>
a -> m a
instantiateFull (Type -> TCM Type) -> TCM Type -> TCM Type
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< Expr -> TCM Type
isType_ Expr
e
        Telescope
tel <- Telescope -> TCMT IO Telescope
forall a (m :: * -> *).
(InstantiateFull a, MonadReduce m) =>
a -> m a
instantiateFull Telescope
tel
        (Type, Type) -> TCM (Type, Type)
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Type
t0, Telescope -> Type -> Type
telePi Telescope
tel Type
t0)
      Type -> TCM ()
checkTelePiSort Type
t'
      --noFunctionsIntoSize t'
      Type -> TCM Type
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Type
t'

    A.Generalized Set QName
s Expr
e -> do
      ([Maybe QName]
_, Type
t') <- Set QName -> TCM Type -> TCM ([Maybe QName], Type)
generalizeType Set QName
s (TCM Type -> TCM ([Maybe QName], Type))
-> TCM Type -> TCM ([Maybe QName], Type)
forall a b. (a -> b) -> a -> b
$ Expr -> TCM Type
isType_ Expr
e
      --noFunctionsIntoSize t'
      Type -> TCM Type
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Type
t'

    -- Prop/(S)Set(ω)ᵢ
    A.Def' QName
x Suffix
suffix
      | Just (UnivSize
sz, Univ
u) <- QName -> Maybe (UnivSize, Univ)
isNameOfUniv QName
x
      , let n :: Integer
n = Suffix -> Integer
suffixToLevel Suffix
suffix
      -> do
        Univ -> TCM ()
univChecks Univ
u
        Type -> TCM Type
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Type -> TCM Type)
-> (Sort' Term -> Type) -> Sort' Term -> TCM Type
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Sort' Term -> Type
sort (Sort' Term -> TCM Type) -> Sort' Term -> TCM Type
forall a b. (a -> b) -> a -> b
$ case UnivSize
sz of
          UnivSize
USmall -> Univ -> Level' Term -> Sort' Term
forall t. Univ -> Level' t -> Sort' t
Univ Univ
u (Level' Term -> Sort' Term) -> Level' Term -> Sort' Term
forall a b. (a -> b) -> a -> b
$ Integer -> Level' Term
ClosedLevel Integer
n
          UnivSize
ULarge -> Univ -> Integer -> Sort' Term
forall t. Univ -> Integer -> Sort' t
Inf Univ
u Integer
n

    -- Prop/(S)et ℓ
    A.App AppInfo
i Expr
s NamedArg Expr
arg
      | NamedArg Expr -> Bool
forall a. LensHiding a => a -> Bool
visible NamedArg Expr
arg,
        A.Def QName
x <- Expr -> Expr
unScope Expr
s,
        Just (UnivSize
USmall, Univ
u) <- QName -> Maybe (UnivSize, Univ)
isNameOfUniv QName
x -> do
      Univ -> TCM ()
univChecks Univ
u
      TCMT IO Bool -> TCM () -> TCM ()
forall (m :: * -> *). Monad m => m Bool -> m () -> m ()
unlessM TCMT IO Bool
forall (m :: * -> *). HasOptions m => m Bool
hasUniversePolymorphism (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$ ArgName -> TCM ()
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
ArgName -> m a
genericError (ArgName -> TCM ()) -> ArgName -> TCM ()
forall a b. (a -> b) -> a -> b
$
        ArgName
"Use --universe-polymorphism to enable level arguments to " ArgName -> ArgName -> ArgName
forall a. [a] -> [a] -> [a]
++ Univ -> ArgName
showUniv Univ
u
      -- allow NonStrict variables when checking level
      --   Set : (NonStrict) Level -> Set\omega
      Relevance -> TCM Type -> TCM Type
forall (tcm :: * -> *) r a.
(MonadTCEnv tcm, LensRelevance r) =>
r -> tcm a -> tcm a
applyRelevanceToContext Relevance
NonStrict (TCM Type -> TCM Type) -> TCM Type -> TCM Type
forall a b. (a -> b) -> a -> b
$
        Sort' Term -> Type
sort (Sort' Term -> Type)
-> (Level' Term -> Sort' Term) -> Level' Term -> Type
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Univ -> Level' Term -> Sort' Term
forall t. Univ -> Level' t -> Sort' t
Univ Univ
u (Level' Term -> Type) -> TCMT IO (Level' Term) -> TCM Type
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> NamedArg Expr -> TCMT IO (Level' Term)
checkLevel NamedArg Expr
arg

    -- Issue #707: Check an existing interaction point
    A.QuestionMark MetaInfo
minfo InteractionId
ii -> TCMT IO (Maybe MetaId)
-> TCM Type -> (MetaId -> TCM Type) -> TCM Type
forall (m :: * -> *) a b.
Monad m =>
m (Maybe a) -> m b -> (a -> m b) -> m b
caseMaybeM (InteractionId -> TCMT IO (Maybe MetaId)
forall (m :: * -> *).
ReadTCState m =>
InteractionId -> m (Maybe MetaId)
lookupInteractionMeta InteractionId
ii) TCM Type
fallback ((MetaId -> TCM Type) -> TCM Type)
-> (MetaId -> TCM Type) -> TCM Type
forall a b. (a -> b) -> a -> b
$ \ MetaId
x -> do
      -- -- | Just x <- A.metaNumber minfo -> do
      ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.ip" Int
20 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
fsep
        [ TCMT IO Doc
"Rechecking meta "
        , MetaId -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => MetaId -> m Doc
prettyTCM MetaId
x
        , ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (ArgName -> TCMT IO Doc) -> ArgName -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ ArgName
" for interaction point " ArgName -> ArgName -> ArgName
forall a. [a] -> [a] -> [a]
++ InteractionId -> ArgName
forall a. Show a => a -> ArgName
show InteractionId
ii
        ]
      MetaVariable
mv <- MetaId -> TCMT IO MetaVariable
forall (m :: * -> *).
(HasCallStack, MonadDebug m, ReadTCState m) =>
MetaId -> m MetaVariable
lookupLocalMeta MetaId
x
      let s0 :: Type
s0 = Judgement MetaId -> Type
forall a. Judgement a -> Type
jMetaType (Judgement MetaId -> Type)
-> (MetaVariable -> Judgement MetaId) -> MetaVariable -> Type
forall b c a. (b -> c) -> (a -> b) -> a -> c
. MetaVariable -> Judgement MetaId
mvJudgement (MetaVariable -> Type) -> MetaVariable -> Type
forall a b. (a -> b) -> a -> b
$ MetaVariable
mv
      -- Andreas, 2016-10-14, issue #2257
      -- The meta was created in a context of length @n@.
      let n :: Int
n  = [ContextEntry] -> Int
forall a. [a] -> Int
forall (t :: * -> *) a. Foldable t => t a -> Int
length ([ContextEntry] -> Int)
-> (MetaVariable -> [ContextEntry]) -> MetaVariable -> Int
forall b c a. (b -> c) -> (a -> b) -> a -> c
. TCEnv -> [ContextEntry]
envContext (TCEnv -> [ContextEntry])
-> (MetaVariable -> TCEnv) -> MetaVariable -> [ContextEntry]
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Closure Range -> TCEnv
forall a. Closure a -> TCEnv
clEnv (Closure Range -> TCEnv)
-> (MetaVariable -> Closure Range) -> MetaVariable -> TCEnv
forall b c a. (b -> c) -> (a -> b) -> a -> c
. MetaInfo -> Closure Range
miClosRange (MetaInfo -> Closure Range)
-> (MetaVariable -> MetaInfo) -> MetaVariable -> Closure Range
forall b c a. (b -> c) -> (a -> b) -> a -> c
. MetaVariable -> MetaInfo
mvInfo (MetaVariable -> Int) -> MetaVariable -> Int
forall a b. (a -> b) -> a -> b
$ MetaVariable
mv
      ([Arg Term]
vs, [Arg Term]
rest) <- Int -> [Arg Term] -> ([Arg Term], [Arg Term])
forall a. Int -> [a] -> ([a], [a])
splitAt Int
n ([Arg Term] -> ([Arg Term], [Arg Term]))
-> TCMT IO [Arg Term] -> TCMT IO ([Arg Term], [Arg Term])
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> TCMT IO [Arg Term]
forall (m :: * -> *). (Applicative m, MonadTCEnv m) => m [Arg Term]
getContextArgs
      ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.ip" Int
20 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
        [ TCMT IO Doc
"  s0   = " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Type -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Type -> m Doc
prettyTCM Type
s0
        , TCMT IO Doc
"  vs   = " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> [Arg Term] -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => [Arg Term] -> m Doc
prettyTCM [Arg Term]
vs
        , TCMT IO Doc
"  rest = " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> [Arg Term] -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => [Arg Term] -> m Doc
prettyTCM [Arg Term]
rest
        ]
      -- We assume the meta variable use here is in an extension of the original context.
      -- If not we revert to the old buggy behavior of #707 (see test/Succeed/Issue2257b).
      if ([Arg Term] -> Int
forall a. [a] -> Int
forall (t :: * -> *) a. Foldable t => t a -> Int
length [Arg Term]
vs Int -> Int -> Bool
forall a. Eq a => a -> a -> Bool
/= Int
n) then TCM Type
fallback else do
      Type
s1  <- Type -> TCM Type
forall a (m :: * -> *). (Reduce a, MonadReduce m) => a -> m a
reduce (Type -> TCM Type) -> TCM Type -> TCM Type
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< Type -> [Arg Term] -> TCM Type
forall a (m :: * -> *).
(PiApplyM a, MonadReduce m, HasBuiltins m) =>
Type -> a -> m Type
forall (m :: * -> *).
(MonadReduce m, HasBuiltins m) =>
Type -> [Arg Term] -> m Type
piApplyM Type
s0 [Arg Term]
vs
      ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.ip" Int
20 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
        [ TCMT IO Doc
"  s1   = " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Type -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Type -> m Doc
prettyTCM Type
s1
        ]
      ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.ip" Int
70 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
        [ TCMT IO Doc
"  s1   = " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (Type -> ArgName
forall a. Show a => a -> ArgName
show Type
s1)
        ]
      case Type -> Term
forall t a. Type'' t a -> a
unEl Type
s1 of
        Sort Sort' Term
s -> Type -> TCM Type
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Type -> TCM Type) -> Type -> TCM Type
forall a b. (a -> b) -> a -> b
$ Sort' Term -> Term -> Type
forall t a. Sort' t -> a -> Type'' t a
El Sort' Term
s (Term -> Type) -> Term -> Type
forall a b. (a -> b) -> a -> b
$ MetaId -> Elims -> Term
MetaV MetaId
x (Elims -> Term) -> Elims -> Term
forall a b. (a -> b) -> a -> b
$ (Arg Term -> Elim) -> [Arg Term] -> Elims
forall a b. (a -> b) -> [a] -> [b]
map Arg Term -> Elim
forall a. Arg a -> Elim' a
Apply [Arg Term]
vs
        Term
_ -> TCM Type
forall a. HasCallStack => a
__IMPOSSIBLE__

    Expr
_ -> TCM Type
fallback

checkLevel :: NamedArg A.Expr -> TCM Level
checkLevel :: NamedArg Expr -> TCMT IO (Level' Term)
checkLevel NamedArg Expr
arg = do
  Type
lvl <- TCM Type
forall (m :: * -> *). (HasBuiltins m, MonadTCError m) => m Type
levelType
  Term -> TCMT IO (Level' Term)
forall (m :: * -> *). PureTCM m => Term -> m (Level' Term)
levelView (Term -> TCMT IO (Level' Term))
-> TCM Term -> TCMT IO (Level' Term)
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< NamedArg Expr -> Type -> TCM Term
checkNamedArg NamedArg Expr
arg Type
lvl

-- | Ensure that a (freshly created) function type does not inhabit 'SizeUniv'.
--   Precondition:  When @noFunctionsIntoSize t tBlame@ is called,
--   we are in the context of @tBlame@ in order to print it correctly.
--   Not being in context of @t@ should not matter, as we are only
--   checking whether its sort reduces to 'SizeUniv'.
--
--   Currently UNUSED since SizeUniv is turned off (as of 2016).
{-
noFunctionsIntoSize :: Type -> Type -> TCM ()
noFunctionsIntoSize t tBlame = do
  reportSDoc "tc.fun" 20 $ do
    let El s (Pi dom b) = tBlame
    sep [ "created function type " <+> prettyTCM tBlame
        , "with pts rule (" <+> prettyTCM (getSort dom) <+>
                        "," <+> underAbstraction_ b (prettyTCM . getSort) <+>
                        "," <+> prettyTCM s <+> ")"
        ]
  s <- reduce $ getSort t
  when (s == SizeUniv) $ do
    -- Andreas, 2015-02-14
    -- We have constructed a function type in SizeUniv
    -- which is illegal to prevent issue 1428.
    typeError $ FunctionTypeInSizeUniv $ unEl tBlame
-}

-- | Check that an expression is a type which is equal to a given type.
isTypeEqualTo :: A.Expr -> Type -> TCM Type
isTypeEqualTo :: Expr -> Type -> TCM Type
isTypeEqualTo Expr
e0 Type
t = Expr -> TCM Expr
scopedExpr Expr
e0 TCM Expr -> (Expr -> TCM Type) -> TCM Type
forall a b. TCMT IO a -> (a -> TCMT IO b) -> TCMT IO b
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= \case
  A.ScopedExpr{} -> TCM Type
forall a. HasCallStack => a
__IMPOSSIBLE__
  A.Underscore MetaInfo
i | Maybe MetaId -> Bool
forall a. Maybe a -> Bool
isNothing (MetaInfo -> Maybe MetaId
A.metaNumber MetaInfo
i) -> Type -> TCM Type
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Type
t
  Expr
e -> TCM Type -> TCM Type
forall (m :: * -> *) a.
(MonadTCEnv m, HasOptions m, MonadDebug m) =>
m a -> m a
workOnTypes (TCM Type -> TCM Type) -> TCM Type -> TCM Type
forall a b. (a -> b) -> a -> b
$ do
    Type
t' <- Expr -> Sort' Term -> TCM Type
isType Expr
e (Type -> Sort' Term
forall a. LensSort a => a -> Sort' Term
getSort Type
t)
    Type
t' Type -> TCM () -> TCM Type
forall a b. a -> TCMT IO b -> TCMT IO a
forall (f :: * -> *) a b. Functor f => a -> f b -> f a
<$ Type -> Type -> TCM ()
forall (m :: * -> *). MonadConversion m => Type -> Type -> m ()
leqType Type
t Type
t'

leqType_ :: Type -> Type -> TCM ()
leqType_ :: Type -> Type -> TCM ()
leqType_ Type
t Type
t' = TCM () -> TCM ()
forall (m :: * -> *) a.
(MonadTCEnv m, HasOptions m, MonadDebug m) =>
m a -> m a
workOnTypes (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$ Type -> Type -> TCM ()
forall (m :: * -> *). MonadConversion m => Type -> Type -> m ()
leqType Type
t Type
t'

---------------------------------------------------------------------------
-- * Telescopes
---------------------------------------------------------------------------

checkGeneralizeTelescope :: A.GeneralizeTelescope -> ([Maybe Name] -> Telescope -> TCM a) -> TCM a
checkGeneralizeTelescope :: forall a.
GeneralizeTelescope
-> ([Maybe Name] -> Telescope -> TCM a) -> TCM a
checkGeneralizeTelescope (A.GeneralizeTel Map QName Name
vars Telescope
tel) [Maybe Name] -> Telescope -> TCM a
k =
  Map QName Name
-> (forall a1. (Telescope -> TCM a1) -> TCM a1)
-> ([Maybe Name] -> Telescope -> TCM a)
-> TCM a
forall a.
Map QName Name
-> (forall a1. (Telescope -> TCM a1) -> TCM a1)
-> ([Maybe Name] -> Telescope -> TCM a)
-> TCM a
generalizeTelescope Map QName Name
vars (Telescope -> (Telescope -> TCM a1) -> TCM a1
forall a. Telescope -> (Telescope -> TCM a) -> TCM a
checkTelescope Telescope
tel) [Maybe Name] -> Telescope -> TCM a
k

-- | Type check a (module) telescope.
--   Binds the variables defined by the telescope.
checkTelescope :: A.Telescope -> (Telescope -> TCM a) -> TCM a
checkTelescope :: forall a. Telescope -> (Telescope -> TCM a) -> TCM a
checkTelescope = LamOrPi -> Telescope -> (Telescope -> TCM a) -> TCM a
forall a. LamOrPi -> Telescope -> (Telescope -> TCM a) -> TCM a
checkTelescope' LamOrPi
LamNotPi

-- | Type check the telescope of a dependent function type.
--   Binds the resurrected variables defined by the telescope.
--   The returned telescope is unmodified (not resurrected).
checkPiTelescope :: A.Telescope -> (Telescope -> TCM a) -> TCM a
checkPiTelescope :: forall a. Telescope -> (Telescope -> TCM a) -> TCM a
checkPiTelescope = LamOrPi -> Telescope -> (Telescope -> TCM a) -> TCM a
forall a. LamOrPi -> Telescope -> (Telescope -> TCM a) -> TCM a
checkTelescope' LamOrPi
PiNotLam

-- | Flag to control resurrection on domains.
data LamOrPi
  = LamNotPi -- ^ We are checking a module telescope.
             --   We pass into the type world to check the domain type.
             --   This resurrects the whole context.
  | PiNotLam -- ^ We are checking a telescope in a Pi-type.
             --   We stay in the term world, but add resurrected
             --   domains to the context to check the remaining
             --   domains and codomain of the Pi-type.
  deriving (LamOrPi -> LamOrPi -> Bool
(LamOrPi -> LamOrPi -> Bool)
-> (LamOrPi -> LamOrPi -> Bool) -> Eq LamOrPi
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
$c== :: LamOrPi -> LamOrPi -> Bool
== :: LamOrPi -> LamOrPi -> Bool
$c/= :: LamOrPi -> LamOrPi -> Bool
/= :: LamOrPi -> LamOrPi -> Bool
Eq, Int -> LamOrPi -> ArgName -> ArgName
[LamOrPi] -> ArgName -> ArgName
LamOrPi -> ArgName
(Int -> LamOrPi -> ArgName -> ArgName)
-> (LamOrPi -> ArgName)
-> ([LamOrPi] -> ArgName -> ArgName)
-> Show LamOrPi
forall a.
(Int -> a -> ArgName -> ArgName)
-> (a -> ArgName) -> ([a] -> ArgName -> ArgName) -> Show a
$cshowsPrec :: Int -> LamOrPi -> ArgName -> ArgName
showsPrec :: Int -> LamOrPi -> ArgName -> ArgName
$cshow :: LamOrPi -> ArgName
show :: LamOrPi -> ArgName
$cshowList :: [LamOrPi] -> ArgName -> ArgName
showList :: [LamOrPi] -> ArgName -> ArgName
Show)

-- | Type check a telescope. Binds the variables defined by the telescope.
checkTelescope' :: LamOrPi -> A.Telescope -> (Telescope -> TCM a) -> TCM a
checkTelescope' :: forall a. LamOrPi -> Telescope -> (Telescope -> TCM a) -> TCM a
checkTelescope' LamOrPi
lamOrPi []        Telescope -> TCM a
ret = Telescope -> TCM a
ret Telescope
forall a. Tele a
EmptyTel
checkTelescope' LamOrPi
lamOrPi (TypedBinding
b : Telescope
tel) Telescope -> TCM a
ret =
    LamOrPi -> TypedBinding -> (Telescope -> TCM a) -> TCM a
forall a. LamOrPi -> TypedBinding -> (Telescope -> TCM a) -> TCM a
checkTypedBindings LamOrPi
lamOrPi TypedBinding
b ((Telescope -> TCM a) -> TCM a) -> (Telescope -> TCM a) -> TCM a
forall a b. (a -> b) -> a -> b
$ \Telescope
tel1 ->
    LamOrPi -> Telescope -> (Telescope -> TCM a) -> TCM a
forall a. LamOrPi -> Telescope -> (Telescope -> TCM a) -> TCM a
checkTelescope' LamOrPi
lamOrPi Telescope
tel  ((Telescope -> TCM a) -> TCM a) -> (Telescope -> TCM a) -> TCM a
forall a b. (a -> b) -> a -> b
$ \Telescope
tel2 ->
        Telescope -> TCM a
ret (Telescope -> TCM a) -> Telescope -> TCM a
forall a b. (a -> b) -> a -> b
$ Telescope -> Telescope -> Telescope
forall t. Abstract t => Telescope -> t -> t
abstract Telescope
tel1 Telescope
tel2

-- | Check the domain of a function type.
--   Used in @checkTypedBindings@ and to typecheck @A.Fun@ cases.
checkDomain :: (LensLock a, LensModality a) => LamOrPi -> List1 a -> A.Expr -> TCM Type
checkDomain :: forall a.
(LensLock a, LensModality a) =>
LamOrPi -> List1 a -> Expr -> TCM Type
checkDomain LamOrPi
lamOrPi List1 a
xs Expr
e = do
    -- Get cohesion and quantity of arguments, which should all be equal because
    -- they come from the same annotated Π-type.
    let (Cohesion
c :| [Cohesion]
cs) = (a -> Cohesion) -> List1 a -> NonEmpty Cohesion
forall a b. (a -> b) -> NonEmpty a -> NonEmpty b
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap (Modality -> Cohesion
forall a. LensCohesion a => a -> Cohesion
getCohesion (Modality -> Cohesion) -> (a -> Modality) -> a -> Cohesion
forall b c a. (b -> c) -> (a -> b) -> a -> c
. a -> Modality
forall a. LensModality a => a -> Modality
getModality) List1 a
xs
    Bool -> TCM () -> TCM ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
unless ((Cohesion -> Bool) -> [Cohesion] -> Bool
forall (t :: * -> *) a. Foldable t => (a -> Bool) -> t a -> Bool
all (Cohesion
c Cohesion -> Cohesion -> Bool
forall a. Eq a => a -> a -> Bool
==) [Cohesion]
cs) (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$ TCM ()
forall a. HasCallStack => a
__IMPOSSIBLE__

    let (Quantity
q :| [Quantity]
qs) = (a -> Quantity) -> List1 a -> NonEmpty Quantity
forall a b. (a -> b) -> NonEmpty a -> NonEmpty b
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap (Modality -> Quantity
forall a. LensQuantity a => a -> Quantity
getQuantity (Modality -> Quantity) -> (a -> Modality) -> a -> Quantity
forall b c a. (b -> c) -> (a -> b) -> a -> c
. a -> Modality
forall a. LensModality a => a -> Modality
getModality) List1 a
xs
    Bool -> TCM () -> TCM ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
unless ((Quantity -> Bool) -> [Quantity] -> Bool
forall (t :: * -> *) a. Foldable t => (a -> Bool) -> t a -> Bool
all (Quantity
q Quantity -> Quantity -> Bool
forall a. Eq a => a -> a -> Bool
==) [Quantity]
qs) (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$ TCM ()
forall a. HasCallStack => a
__IMPOSSIBLE__

    Type
t <- Quantity -> TCM Type -> TCM Type
forall (tcm :: * -> *) q a.
(MonadTCEnv tcm, LensQuantity q) =>
q -> tcm a -> tcm a
applyQuantityToJudgement Quantity
q (TCM Type -> TCM Type) -> TCM Type -> TCM Type
forall a b. (a -> b) -> a -> b
$
         Cohesion -> TCM Type -> TCM Type
forall (tcm :: * -> *) m a.
(MonadTCEnv tcm, LensCohesion m) =>
m -> tcm a -> tcm a
applyCohesionToContext Cohesion
c (TCM Type -> TCM Type) -> TCM Type -> TCM Type
forall a b. (a -> b) -> a -> b
$
         LamOrPi -> TCM Type -> TCM Type
forall {m :: * -> *} {a}.
(MonadTCEnv m, HasOptions m, MonadDebug m) =>
LamOrPi -> m a -> m a
modEnv LamOrPi
lamOrPi (TCM Type -> TCM Type) -> TCM Type -> TCM Type
forall a b. (a -> b) -> a -> b
$ Expr -> TCM Type
isType_ Expr
e
    -- Andrea TODO: also make sure that LockUniv implies IsLock
    Bool -> TCM () -> TCM ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
when ((a -> Bool) -> List1 a -> Bool
forall (t :: * -> *) a. Foldable t => (a -> Bool) -> t a -> Bool
any (\a
x -> case a -> Lock
forall a. LensLock a => a -> Lock
getLock a
x of { IsLock{} -> Bool
True ; Lock
_ -> Bool
False }) List1 a
xs) (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$ do
         -- Solves issue #5033
        TCMT IO Bool -> TCM () -> TCM ()
forall (m :: * -> *). Monad m => m Bool -> m () -> m ()
unlessM (Maybe QName -> Bool
forall a. Maybe a -> Bool
isJust (Maybe QName -> Bool) -> TCMT IO (Maybe QName) -> TCMT IO Bool
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> PrimitiveId -> TCMT IO (Maybe QName)
forall (m :: * -> *) a.
(HasBuiltins m, IsBuiltin a) =>
a -> m (Maybe QName)
getName' PrimitiveId
builtinLockUniv) (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$ do
          Doc -> TCM ()
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
Doc -> m a
genericDocError (Doc -> TCM ()) -> Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ Doc
"Missing binding for primLockUniv primitive."

        Sort' Term -> Sort' Term -> TCM ()
forall (m :: * -> *).
MonadConversion m =>
Sort' Term -> Sort' Term -> m ()
equalSort (Type -> Sort' Term
forall a. LensSort a => a -> Sort' Term
getSort Type
t) Sort' Term
forall t. Sort' t
LockUniv

    Type -> TCM Type
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Type
t
  where
        -- if we are checking a typed lambda, we resurrect before we check the
        -- types, but do not modify the new context entries
        -- otherwise, if we are checking a pi, we do not resurrect, but
        -- modify the new context entries
        modEnv :: LamOrPi -> m a -> m a
modEnv LamOrPi
LamNotPi = m a -> m a
forall (m :: * -> *) a.
(MonadTCEnv m, HasOptions m, MonadDebug m) =>
m a -> m a
workOnTypes
        modEnv LamOrPi
_        = m a -> m a
forall a. a -> a
id

checkPiDomain :: (LensLock a, LensModality a) => List1 a -> A.Expr -> TCM Type
checkPiDomain :: forall a.
(LensLock a, LensModality a) =>
List1 a -> Expr -> TCM Type
checkPiDomain = LamOrPi -> List1 a -> Expr -> TCM Type
forall a.
(LensLock a, LensModality a) =>
LamOrPi -> List1 a -> Expr -> TCM Type
checkDomain LamOrPi
PiNotLam

-- | Check a typed binding and extends the context with the bound variables.
--   The telescope passed to the continuation is valid in the original context.
--
--   Parametrized by a flag wether we check a typed lambda or a Pi. This flag
--   is needed for irrelevance.

checkTypedBindings :: LamOrPi -> A.TypedBinding -> (Telescope -> TCM a) -> TCM a
checkTypedBindings :: forall a. LamOrPi -> TypedBinding -> (Telescope -> TCM a) -> TCM a
checkTypedBindings LamOrPi
lamOrPi (A.TBind Range
r TypedBindingInfo
tac List1 (NamedArg (Binder' BindName))
xps Expr
e) Telescope -> TCM a
ret = do
    let xs :: NonEmpty (NamedArg Name)
xs = (NamedArg (Binder' BindName) -> NamedArg Name)
-> List1 (NamedArg (Binder' BindName)) -> NonEmpty (NamedArg Name)
forall a b. (a -> b) -> NonEmpty a -> NonEmpty b
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap ((Binder' BindName -> Name)
-> NamedArg (Binder' BindName) -> NamedArg Name
forall a b. (a -> b) -> NamedArg a -> NamedArg b
updateNamedArg ((Binder' BindName -> Name)
 -> NamedArg (Binder' BindName) -> NamedArg Name)
-> (Binder' BindName -> Name)
-> NamedArg (Binder' BindName)
-> NamedArg Name
forall a b. (a -> b) -> a -> b
$ BindName -> Name
A.unBind (BindName -> Name)
-> (Binder' BindName -> BindName) -> Binder' BindName -> Name
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Binder' BindName -> BindName
forall a. Binder' a -> a
A.binderName) List1 (NamedArg (Binder' BindName))
xps
    Maybe Term
tac <- (Expr -> TCM Term) -> Maybe Expr -> TCMT IO (Maybe Term)
forall (t :: * -> *) (f :: * -> *) a b.
(Traversable t, Applicative f) =>
(a -> f b) -> t a -> f (t b)
forall (f :: * -> *) a b.
Applicative f =>
(a -> f b) -> Maybe a -> f (Maybe b)
traverse (LamOrPi -> Expr -> TCM Term
checkTacticAttribute LamOrPi
lamOrPi) (TypedBindingInfo -> Maybe Expr
tbTacticAttr TypedBindingInfo
tac)
    Maybe Term -> (Term -> TCM ()) -> TCM ()
forall (m :: * -> *) a. Monad m => Maybe a -> (a -> m ()) -> m ()
whenJust Maybe Term
tac ((Term -> TCM ()) -> TCM ()) -> (Term -> TCM ()) -> TCM ()
forall a b. (a -> b) -> a -> b
$ \ Term
t -> ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.tactic" Int
30 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ TCMT IO Doc
"Checked tactic attribute:" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<?> Term -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Term -> m Doc
prettyTCM Term
t
    -- Andreas, 2011-04-26 irrelevant function arguments may appear
    -- non-strictly in the codomain type
    -- 2011-10-04 if flag --experimental-irrelevance is set
    Bool
experimental <- PragmaOptions -> Bool
optExperimentalIrrelevance (PragmaOptions -> Bool) -> TCMT IO PragmaOptions -> TCMT IO Bool
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> TCMT IO PragmaOptions
forall (m :: * -> *). HasOptions m => m PragmaOptions
pragmaOptions

    Type
t <- LamOrPi -> List1 (NamedArg (Binder' BindName)) -> Expr -> TCM Type
forall a.
(LensLock a, LensModality a) =>
LamOrPi -> List1 a -> Expr -> TCM Type
checkDomain LamOrPi
lamOrPi List1 (NamedArg (Binder' BindName))
xps Expr
e

    -- Jesper, 2019-02-12, Issue #3534: warn if the type of an
    -- instance argument does not have the right shape
    [NamedArg (Binder' BindName)]
-> (List1 (NamedArg (Binder' BindName)) -> TCM ()) -> TCM ()
forall m a. Null m => [a] -> (List1 a -> m) -> m
List1.unlessNull ((NamedArg (Binder' BindName) -> Bool)
-> List1 (NamedArg (Binder' BindName))
-> [NamedArg (Binder' BindName)]
forall a. (a -> Bool) -> NonEmpty a -> [a]
List1.filter NamedArg (Binder' BindName) -> Bool
forall a. LensHiding a => a -> Bool
isInstance List1 (NamedArg (Binder' BindName))
xps) ((List1 (NamedArg (Binder' BindName)) -> TCM ()) -> TCM ())
-> (List1 (NamedArg (Binder' BindName)) -> TCM ()) -> TCM ()
forall a b. (a -> b) -> a -> b
$ \ List1 (NamedArg (Binder' BindName))
ixs -> do
      (Telescope
tel, OutputTypeName
target) <- Type -> TCM (Telescope, OutputTypeName)
getOutputTypeName Type
t
      case OutputTypeName
target of
        OutputTypeName{} -> () -> TCM ()
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return ()
        OutputTypeVar{}  -> () -> TCM ()
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return ()
        OutputTypeVisiblePi{} -> Warning -> TCM ()
forall (m :: * -> *).
(HasCallStack, MonadWarning m) =>
Warning -> m ()
warning (Warning -> TCM ()) -> (Doc -> Warning) -> Doc -> TCM ()
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Doc -> Warning
InstanceArgWithExplicitArg (Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< TypedBinding -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => TypedBinding -> m Doc
prettyTCM (Range
-> List1 (NamedArg (Binder' BindName)) -> Expr -> TypedBinding
A.mkTBind Range
r List1 (NamedArg (Binder' BindName))
ixs Expr
e)
        OutputTypeNameNotYetKnown{} -> () -> TCM ()
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return ()
        OutputTypeName
NoOutputTypeName -> Warning -> TCM ()
forall (m :: * -> *).
(HasCallStack, MonadWarning m) =>
Warning -> m ()
warning (Warning -> TCM ()) -> (Doc -> Warning) -> Doc -> TCM ()
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Doc -> Warning
InstanceNoOutputTypeName (Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< TypedBinding -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => TypedBinding -> m Doc
prettyTCM (Range
-> List1 (NamedArg (Binder' BindName)) -> Expr -> TypedBinding
A.mkTBind Range
r List1 (NamedArg (Binder' BindName))
ixs Expr
e)

    let setTac :: Maybe t -> Tele (Dom' t e) -> Tele (Dom' t e)
setTac Maybe t
tac Tele (Dom' t e)
EmptyTel            = Tele (Dom' t e)
forall a. Tele a
EmptyTel
        setTac Maybe t
tac (ExtendTel Dom' t e
dom Abs (Tele (Dom' t e))
tel) = Dom' t e -> Abs (Tele (Dom' t e)) -> Tele (Dom' t e)
forall a. a -> Abs (Tele a) -> Tele a
ExtendTel Dom' t e
dom{ domTactic = tac } (Abs (Tele (Dom' t e)) -> Tele (Dom' t e))
-> Abs (Tele (Dom' t e)) -> Tele (Dom' t e)
forall a b. (a -> b) -> a -> b
$ Maybe t -> Tele (Dom' t e) -> Tele (Dom' t e)
setTac (Int -> Maybe t -> Maybe t
forall a. Subst a => Int -> a -> a
raise Int
1 Maybe t
tac) (Tele (Dom' t e) -> Tele (Dom' t e))
-> Abs (Tele (Dom' t e)) -> Abs (Tele (Dom' t e))
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> Abs (Tele (Dom' t e))
tel
        xs' :: NonEmpty (NamedArg Name)
xs' = (NamedArg Name -> NamedArg Name)
-> NonEmpty (NamedArg Name) -> NonEmpty (NamedArg Name)
forall a b. (a -> b) -> NonEmpty a -> NonEmpty b
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap (LamOrPi -> Bool -> NamedArg Name -> NamedArg Name
forall {b} {a}.
(IsBool b, LensRelevance a) =>
LamOrPi -> b -> a -> a
modMod LamOrPi
lamOrPi Bool
experimental) NonEmpty (NamedArg Name)
xs
    let tel :: Telescope
tel = Maybe Term -> Telescope -> Telescope
forall {t} {t} {e}.
Subst t =>
Maybe t -> Tele (Dom' t e) -> Tele (Dom' t e)
setTac Maybe Term
tac (Telescope -> Telescope) -> Telescope -> Telescope
forall a b. (a -> b) -> a -> b
$ NonEmpty (NamedArg Name) -> Type -> Telescope
namedBindsToTel1 NonEmpty (NamedArg Name)
xs Type
t

    (NonEmpty (NamedArg Name), Type) -> TCM a -> TCM a
forall b (m :: * -> *) a.
(AddContext b, MonadAddContext m) =>
b -> m a -> m a
forall (m :: * -> *) a.
MonadAddContext m =>
(NonEmpty (NamedArg Name), Type) -> m a -> m a
addContext (NonEmpty (NamedArg Name)
xs', Type
t) (TCM a -> TCM a) -> TCM a -> TCM a
forall a b. (a -> b) -> a -> b
$ List1 (NamedArg (Binder' BindName)) -> TCM a -> TCM a
forall a. List1 (NamedArg (Binder' BindName)) -> TCM a -> TCM a
addTypedPatterns List1 (NamedArg (Binder' BindName))
xps (Telescope -> TCM a
ret Telescope
tel)

    where
        -- if we are checking a typed lambda, we resurrect before we check the
        -- types, but do not modify the new context entries
        -- otherwise, if we are checking a pi, we do not resurrect, but
        -- modify the new context entries
        modEnv :: LamOrPi -> m a -> m a
modEnv LamOrPi
LamNotPi = m a -> m a
forall (m :: * -> *) a.
(MonadTCEnv m, HasOptions m, MonadDebug m) =>
m a -> m a
workOnTypes
        modEnv LamOrPi
_        = m a -> m a
forall a. a -> a
id
        modMod :: LamOrPi -> b -> a -> a
modMod LamOrPi
PiNotLam b
xp = b -> (a -> a) -> a -> a
forall b a. IsBool b => b -> (a -> a) -> a -> a
applyWhen b
xp ((a -> a) -> a -> a) -> (a -> a) -> a -> a
forall a b. (a -> b) -> a -> b
$ (Relevance -> Relevance) -> a -> a
forall a. LensRelevance a => (Relevance -> Relevance) -> a -> a
mapRelevance Relevance -> Relevance
irrToNonStrict
        modMod LamOrPi
_        b
_  = a -> a
forall a. a -> a
id

checkTypedBindings LamOrPi
lamOrPi (A.TLet Range
_ List1 LetBinding
lbs) Telescope -> TCM a
ret = do
    List1 LetBinding -> TCM a -> TCM a
forall (t :: * -> *) a.
Foldable t =>
t LetBinding -> TCM a -> TCM a
checkLetBindings List1 LetBinding
lbs (Telescope -> TCM a
ret Telescope
forall a. Tele a
EmptyTel)

-- | After a typed binding has been checked, add the patterns it binds
addTypedPatterns :: List1 (NamedArg A.Binder) -> TCM a -> TCM a
addTypedPatterns :: forall a. List1 (NamedArg (Binder' BindName)) -> TCM a -> TCM a
addTypedPatterns List1 (NamedArg (Binder' BindName))
xps TCM a
ret = do
  let ps :: [(Pattern, BindName)]
ps  = (NamedArg (Binder' BindName) -> Maybe (Pattern, BindName))
-> List1 (NamedArg (Binder' BindName)) -> [(Pattern, BindName)]
forall a b. (a -> Maybe b) -> List1 a -> [b]
List1.mapMaybe (Binder' BindName -> Maybe (Pattern, BindName)
forall a. Binder' a -> Maybe (Pattern, a)
A.extractPattern (Binder' BindName -> Maybe (Pattern, BindName))
-> (NamedArg (Binder' BindName) -> Binder' BindName)
-> NamedArg (Binder' BindName)
-> Maybe (Pattern, BindName)
forall b c a. (b -> c) -> (a -> b) -> a -> c
. NamedArg (Binder' BindName) -> Binder' BindName
forall a. NamedArg a -> a
namedArg) List1 (NamedArg (Binder' BindName))
xps
  let lbs :: [LetBinding]
lbs = ((Pattern, BindName) -> LetBinding)
-> [(Pattern, BindName)] -> [LetBinding]
forall a b. (a -> b) -> [a] -> [b]
map (Pattern, BindName) -> LetBinding
letBinding [(Pattern, BindName)]
ps
  [LetBinding] -> TCM a -> TCM a
forall (t :: * -> *) a.
Foldable t =>
t LetBinding -> TCM a -> TCM a
checkLetBindings [LetBinding]
lbs TCM a
ret
  where
    letBinding :: (A.Pattern, A.BindName) -> A.LetBinding
    letBinding :: (Pattern, BindName) -> LetBinding
letBinding (Pattern
p, BindName
n) = LetInfo -> Pattern -> Expr -> LetBinding
A.LetPatBind (Range -> LetInfo
A.LetRange Range
r) Pattern
p (Name -> Expr
A.Var (Name -> Expr) -> Name -> Expr
forall a b. (a -> b) -> a -> b
$ BindName -> Name
A.unBind BindName
n)
      where r :: Range
r = Pattern -> BindName -> Range
forall u t. (HasRange u, HasRange t) => u -> t -> Range
fuseRange Pattern
p BindName
n

-- | Check a tactic attribute. Should have type Term → TC ⊤.
checkTacticAttribute :: LamOrPi -> A.Expr -> TCM Term
checkTacticAttribute :: LamOrPi -> Expr -> TCM Term
checkTacticAttribute LamOrPi
LamNotPi Expr
e = Doc -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
Doc -> m a
genericDocError (Doc -> TCM Term) -> TCMT IO Doc -> TCM Term
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< TCMT IO Doc
"The @tactic attribute is not allowed here"
checkTacticAttribute LamOrPi
PiNotLam Expr
e = do
  Type
expectedType <- TCM Term -> TCM Type
forall (m :: * -> *). Functor m => m Term -> m Type
el TCM Term
forall (m :: * -> *).
(HasBuiltins m, MonadError TCErr m, MonadTCEnv m, ReadTCState m) =>
m Term
primAgdaTerm TCM Type -> TCM Type -> TCM Type
forall (m :: * -> *). Applicative m => m Type -> m Type -> m Type
--> TCM Term -> TCM Type
forall (m :: * -> *). Functor m => m Term -> m Type
el (TCM Term
forall (m :: * -> *).
(HasBuiltins m, MonadError TCErr m, MonadTCEnv m, ReadTCState m) =>
m Term
primAgdaTCM TCM Term -> TCM Term -> TCM Term
forall (m :: * -> *). Applicative m => m Term -> m Term -> m Term
<#> TCM Term
forall (m :: * -> *).
(HasBuiltins m, MonadError TCErr m, MonadTCEnv m, ReadTCState m) =>
m Term
primLevelZero TCM Term -> TCM Term -> TCM Term
forall (m :: * -> *). Applicative m => m Term -> m Term -> m Term
<@> TCM Term
forall (m :: * -> *).
(HasBuiltins m, MonadError TCErr m, MonadTCEnv m, ReadTCState m) =>
m Term
primUnit)
  Expr -> Type -> TCM Term
checkExpr Expr
e Type
expectedType

checkPath :: A.TypedBinding -> A.Expr -> Type -> TCM Term
checkPath :: TypedBinding -> Expr -> Type -> TCM Term
checkPath b :: TypedBinding
b@(A.TBind Range
_r TypedBindingInfo
_tac (NamedArg (Binder' BindName)
xp :| []) Expr
typ) Expr
body Type
ty = do
 ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.lambda" Int
30 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
hsep [ TCMT IO Doc
"checking path lambda", NamedArg (Binder' BindName) -> TCMT IO Doc
forall a (m :: * -> *).
(ToConcrete a, Pretty (ConOfAbs a), MonadAbsToCon m) =>
a -> m Doc
prettyA NamedArg (Binder' BindName)
xp ]
 case (Binder' BindName -> Maybe (Pattern, BindName)
forall a. Binder' a -> Maybe (Pattern, a)
A.extractPattern (Binder' BindName -> Maybe (Pattern, BindName))
-> Binder' BindName -> Maybe (Pattern, BindName)
forall a b. (a -> b) -> a -> b
$ NamedArg (Binder' BindName) -> Binder' BindName
forall a. NamedArg a -> a
namedArg NamedArg (Binder' BindName)
xp) of
  Just{}  -> NamedArg (Binder' BindName) -> TCM Term -> TCM Term
forall (m :: * -> *) x a.
(MonadTrace m, HasRange x) =>
x -> m a -> m a
setCurrentRange NamedArg (Binder' BindName)
xp (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ ArgName -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
ArgName -> m a
genericError (ArgName -> TCM Term) -> ArgName -> TCM Term
forall a b. (a -> b) -> a -> b
$ ArgName
"Patterns are not allowed in Path-lambdas"
  Maybe (Pattern, BindName)
Nothing -> do
    let x :: NamedArg Name
x    = (Binder' BindName -> Name)
-> NamedArg (Binder' BindName) -> NamedArg Name
forall a b. (a -> b) -> NamedArg a -> NamedArg b
updateNamedArg (BindName -> Name
A.unBind (BindName -> Name)
-> (Binder' BindName -> BindName) -> Binder' BindName -> Name
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Binder' BindName -> BindName
forall a. Binder' a -> a
A.binderName) NamedArg (Binder' BindName)
xp
        info :: ArgInfo
info = NamedArg Name -> ArgInfo
forall a. LensArgInfo a => a -> ArgInfo
getArgInfo NamedArg Name
x
    PathType Sort' Term
s QName
path Arg Term
level Arg Term
typ Arg Term
lhs Arg Term
rhs <- Type -> TCMT IO PathView
forall (m :: * -> *). HasBuiltins m => Type -> m PathView
pathView Type
ty
    Type
interval <- TCM Type
forall (m :: * -> *).
(HasBuiltins m, MonadError TCErr m, MonadTCEnv m, ReadTCState m) =>
m Type
primIntervalType
    Term
v <- ([NamedArg Name], Type) -> TCM Term -> TCM Term
forall b (m :: * -> *) a.
(AddContext b, MonadAddContext m) =>
b -> m a -> m a
forall (m :: * -> *) a.
MonadAddContext m =>
([NamedArg Name], Type) -> m a -> m a
addContext ([NamedArg Name
x], Type
interval) (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$
           Expr -> Type -> TCM Term
checkExpr Expr
body (Sort' Term -> Term -> Type
forall t a. Sort' t -> a -> Type'' t a
El (Int -> Sort' Term -> Sort' Term
forall a. Subst a => Int -> a -> a
raise Int
1 Sort' Term
s) (Int -> Term -> Term
forall a. Subst a => Int -> a -> a
raise Int
1 (Arg Term -> Term
forall e. Arg e -> e
unArg Arg Term
typ) Term -> [Arg Term] -> Term
forall t. Apply t => t -> [Arg Term] -> t
`apply` [Term -> Arg Term
forall e. e -> Arg e
argN (Term -> Arg Term) -> Term -> Arg Term
forall a b. (a -> b) -> a -> b
$ Int -> Term
var Int
0]))
    Term
iZero <- TCM Term
forall (m :: * -> *).
(HasBuiltins m, MonadError TCErr m, MonadTCEnv m, ReadTCState m) =>
m Term
primIZero
    Term
iOne  <- TCM Term
forall (m :: * -> *).
(HasBuiltins m, MonadError TCErr m, MonadTCEnv m, ReadTCState m) =>
m Term
primIOne
    let lhs' :: Term
lhs' = Int -> SubstArg Term -> Term -> Term
forall a. Subst a => Int -> SubstArg a -> a -> a
subst Int
0 Term
SubstArg Term
iZero Term
v
        rhs' :: Term
rhs' = Int -> SubstArg Term -> Term -> Term
forall a. Subst a => Int -> SubstArg a -> a -> a
subst Int
0 Term
SubstArg Term
iOne  Term
v
    let t :: Term
t = ArgInfo -> Abs Term -> Term
Lam ArgInfo
info (Abs Term -> Term) -> Abs Term -> Term
forall a b. (a -> b) -> a -> b
$ ArgName -> Term -> Abs Term
forall a. ArgName -> a -> Abs a
Abs (NamedArg Name -> ArgName
namedArgName NamedArg Name
x) Term
v
    let btyp :: Term -> Type
btyp Term
i = Sort' Term -> Term -> Type
forall t a. Sort' t -> a -> Type'' t a
El Sort' Term
s (Arg Term -> Term
forall e. Arg e -> e
unArg Arg Term
typ Term -> [Arg Term] -> Term
forall t. Apply t => t -> [Arg Term] -> t
`apply` [Term -> Arg Term
forall e. e -> Arg e
argN Term
i])
    Lens' TCEnv Range -> (Range -> Range) -> TCM Term -> TCM Term
forall (m :: * -> *) a b.
MonadTCEnv m =>
Lens' TCEnv a -> (a -> a) -> m b -> m b
locallyTC (Range -> f Range) -> TCEnv -> f TCEnv
Lens' TCEnv Range
eRange (Range -> Range -> Range
forall a b. a -> b -> a
const Range
forall a. Range' a
noRange) (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ Type -> TCM Term -> TCM Term
forall (m :: * -> *).
(MonadMetaSolver m, MonadConstraint m, MonadFresh Int m,
 MonadFresh ProblemId m) =>
Type -> m Term -> m Term
blockTerm Type
ty (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ Expr -> TCM Term -> TCM Term
forall (m :: * -> *) x a.
(MonadTrace m, HasRange x) =>
x -> m a -> m a
setCurrentRange Expr
body (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ do
      Type -> Term -> Term -> TCM ()
forall (m :: * -> *).
MonadConversion m =>
Type -> Term -> Term -> m ()
equalTerm (Term -> Type
btyp Term
iZero) Term
lhs' (Arg Term -> Term
forall e. Arg e -> e
unArg Arg Term
lhs)
      Type -> Term -> Term -> TCM ()
forall (m :: * -> *).
MonadConversion m =>
Type -> Term -> Term -> m ()
equalTerm (Term -> Type
btyp Term
iOne) Term
rhs' (Arg Term -> Term
forall e. Arg e -> e
unArg Arg Term
rhs)
      Term -> TCM Term
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Term
t
checkPath TypedBinding
b Expr
body Type
ty = TCM Term
forall a. HasCallStack => a
__IMPOSSIBLE__

---------------------------------------------------------------------------
-- * Lambda abstractions
---------------------------------------------------------------------------

-- | Type check a lambda expression.
--   "checkLambda bs e ty"  means  (\ bs -> e) : ty
checkLambda :: Comparison -> A.TypedBinding -> A.Expr -> Type -> TCM Term
checkLambda :: Comparison -> TypedBinding -> Expr -> Type -> TCM Term
checkLambda Comparison
cmp (A.TLet Range
_ List1 LetBinding
lbs) Expr
body Type
target =
  List1 LetBinding -> TCM Term -> TCM Term
forall (t :: * -> *) a.
Foldable t =>
t LetBinding -> TCM a -> TCM a
checkLetBindings List1 LetBinding
lbs (Expr -> Type -> TCM Term
checkExpr Expr
body Type
target)
checkLambda Comparison
cmp b :: TypedBinding
b@(A.TBind Range
r TypedBindingInfo
tac List1 (NamedArg (Binder' BindName))
xps0 Expr
typ) Expr
body Type
target = do
  ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.lambda" Int
30 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
    [ TCMT IO Doc
"checkLambda before insertion xs =" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> List1 (NamedArg (Binder' BindName)) -> TCMT IO Doc
forall a (m :: * -> *).
(ToConcrete a, Pretty (ConOfAbs a), MonadAbsToCon m) =>
a -> m Doc
prettyA List1 (NamedArg (Binder' BindName))
xps0
    ]
  -- Andreas, 2020-03-25, issue #4481: since we have named lambdas now,
  -- we need to insert skipped hidden arguments.
  List1 (NamedArg (Binder' BindName))
xps <- List1 (NamedArg (Binder' BindName))
-> Type -> TCMT IO (List1 (NamedArg (Binder' BindName)))
forall (m :: * -> *).
(PureTCM m, MonadError TCErr m, MonadFresh NameId m,
 MonadTrace m) =>
List1 (NamedArg (Binder' BindName))
-> Type -> m (List1 (NamedArg (Binder' BindName)))
insertImplicitBindersT1 List1 (NamedArg (Binder' BindName))
xps0 Type
target
  Comparison
-> TypedBinding
-> List1 (NamedArg (Binder' BindName))
-> Expr
-> Expr
-> Type
-> TCM Term
checkLambda' Comparison
cmp (Range
-> TypedBindingInfo
-> List1 (NamedArg (Binder' BindName))
-> Expr
-> TypedBinding
A.TBind Range
r TypedBindingInfo
tac List1 (NamedArg (Binder' BindName))
xps Expr
typ) List1 (NamedArg (Binder' BindName))
xps Expr
typ Expr
body Type
target

checkLambda'
  :: Comparison          -- ^ @cmp@
  -> A.TypedBinding      -- ^ @TBind _ _ xps typ@
  -> List1 (NamedArg Binder)   -- ^ @xps@
  -> A.Expr              -- ^ @typ@
  -> A.Expr              -- ^ @body@
  -> Type                -- ^ @target@
  -> TCM Term
checkLambda' :: Comparison
-> TypedBinding
-> List1 (NamedArg (Binder' BindName))
-> Expr
-> Expr
-> Type
-> TCM Term
checkLambda' Comparison
cmp TypedBinding
b List1 (NamedArg (Binder' BindName))
xps Expr
typ Expr
body Type
target = do
  ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.lambda" Int
30 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
    [ TCMT IO Doc
"checkLambda xs =" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> List1 (NamedArg (Binder' BindName)) -> TCMT IO Doc
forall a (m :: * -> *).
(ToConcrete a, Pretty (ConOfAbs a), MonadAbsToCon m) =>
a -> m Doc
prettyA List1 (NamedArg (Binder' BindName))
xps
    , TCMT IO Doc
"possiblePath   =" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Bool -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Bool -> m Doc
prettyTCM Bool
possiblePath
    , TCMT IO Doc
"numbinds       =" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Int -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Int -> m Doc
prettyTCM Int
numbinds
    , TCMT IO Doc
"typ            =" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Expr -> TCMT IO Doc
forall a (m :: * -> *).
(ToConcrete a, Pretty (ConOfAbs a), MonadAbsToCon m) =>
a -> m Doc
prettyA   (Expr -> Expr
unScope Expr
typ)
    ]
  ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.lambda" Int
60 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
    [ TCMT IO Doc
"info           =" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> (ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (ArgName -> TCMT IO Doc)
-> (ArgInfo -> ArgName) -> ArgInfo -> TCMT IO Doc
forall b c a. (b -> c) -> (a -> b) -> a -> c
. ArgInfo -> ArgName
forall a. Show a => a -> ArgName
show) ArgInfo
info
    ]
  TelV Telescope
tel Type
btyp <- Int -> Type -> TCMT IO (TelV Type)
forall (m :: * -> *).
(MonadReduce m, MonadAddContext m) =>
Int -> Type -> m (TelV Type)
telViewUpTo Int
numbinds Type
target
  if Int
numbinds Int -> Int -> Bool
forall a. Eq a => a -> a -> Bool
== Int
1 Bool -> Bool -> Bool
&& Bool -> Bool
not (Telescope -> Bool
forall a. Null a => a -> Bool
null Telescope
tel) then Telescope -> Type -> TCM Term
useTargetType Telescope
tel Type
btyp
  else if Bool
possiblePath then TCM Term
trySeeingIfPath
  else TCM Term
dontUseTargetType

  where

    xs :: NonEmpty (NamedArg Name)
xs = (NamedArg (Binder' BindName) -> NamedArg Name)
-> List1 (NamedArg (Binder' BindName)) -> NonEmpty (NamedArg Name)
forall a b. (a -> b) -> NonEmpty a -> NonEmpty b
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap ((Binder' BindName -> Name)
-> NamedArg (Binder' BindName) -> NamedArg Name
forall a b. (a -> b) -> NamedArg a -> NamedArg b
updateNamedArg (BindName -> Name
A.unBind (BindName -> Name)
-> (Binder' BindName -> BindName) -> Binder' BindName -> Name
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Binder' BindName -> BindName
forall a. Binder' a -> a
A.binderName)) List1 (NamedArg (Binder' BindName))
xps
    numbinds :: Int
numbinds = List1 (NamedArg (Binder' BindName)) -> Int
forall a. NonEmpty a -> Int
forall (t :: * -> *) a. Foldable t => t a -> Int
length List1 (NamedArg (Binder' BindName))
xps
    isUnderscore :: Expr -> Bool
isUnderscore = \case { A.Underscore{} -> Bool
True; Expr
_ -> Bool
False }
    possiblePath :: Bool
possiblePath = Int
numbinds Int -> Int -> Bool
forall a. Eq a => a -> a -> Bool
== Int
1 Bool -> Bool -> Bool
&& Expr -> Bool
isUnderscore (Expr -> Expr
unScope Expr
typ)
                   Bool -> Bool -> Bool
&& ArgInfo -> Bool
forall a. LensRelevance a => a -> Bool
isRelevant ArgInfo
info Bool -> Bool -> Bool
&& ArgInfo -> Bool
forall a. LensHiding a => a -> Bool
visible ArgInfo
info
    info :: ArgInfo
info = NamedArg Name -> ArgInfo
forall a. LensArgInfo a => a -> ArgInfo
getArgInfo (NamedArg Name -> ArgInfo) -> NamedArg Name -> ArgInfo
forall a b. (a -> b) -> a -> b
$ NonEmpty (NamedArg Name) -> NamedArg Name
forall a. NonEmpty a -> a
List1.head NonEmpty (NamedArg Name)
xs

    trySeeingIfPath :: TCM Term
trySeeingIfPath = do
      Bool
cubical <- Maybe Cubical -> Bool
forall a. Maybe a -> Bool
isJust (Maybe Cubical -> Bool)
-> (PragmaOptions -> Maybe Cubical) -> PragmaOptions -> Bool
forall b c a. (b -> c) -> (a -> b) -> a -> c
. PragmaOptions -> Maybe Cubical
optCubical (PragmaOptions -> Bool) -> TCMT IO PragmaOptions -> TCMT IO Bool
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> TCMT IO PragmaOptions
forall (m :: * -> *). HasOptions m => m PragmaOptions
pragmaOptions
      ArgName -> Int -> ArgName -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> ArgName -> m ()
reportSLn ArgName
"tc.term.lambda" Int
60 (ArgName -> TCM ()) -> ArgName -> TCM ()
forall a b. (a -> b) -> a -> b
$ ArgName
"trySeeingIfPath for " ArgName -> ArgName -> ArgName
forall a. [a] -> [a] -> [a]
++ List1 (NamedArg (Binder' BindName)) -> ArgName
forall a. Show a => a -> ArgName
show List1 (NamedArg (Binder' BindName))
xps
      let postpone' :: Blocker -> Type -> TCM Term
postpone' = if Bool
cubical then Blocker -> Type -> TCM Term
postpone else \ Blocker
_ Type
_ -> TCM Term
dontUseTargetType
      Type
-> (Blocker -> Type -> TCM Term)
-> (NotBlocked -> Type -> TCM Term)
-> TCM Term
forall t (m :: * -> *) a.
(Reduce t, IsMeta t, MonadReduce m) =>
t -> (Blocker -> t -> m a) -> (NotBlocked -> t -> m a) -> m a
ifBlocked Type
target Blocker -> Type -> TCM Term
postpone' ((NotBlocked -> Type -> TCM Term) -> TCM Term)
-> (NotBlocked -> Type -> TCM Term) -> TCM Term
forall a b. (a -> b) -> a -> b
$ \ NotBlocked
_ Type
t -> do
        TCMT IO Bool -> TCM Term -> TCM Term -> TCM Term
forall (m :: * -> *) a. Monad m => m Bool -> m a -> m a -> m a
ifNotM (PathView -> Bool
isPathType (PathView -> Bool) -> TCMT IO PathView -> TCMT IO Bool
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> Type -> TCMT IO PathView
forall (m :: * -> *). HasBuiltins m => Type -> m PathView
pathView Type
t) TCM Term
dontUseTargetType {-else-} (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ if Bool
cubical
          then TypedBinding -> Expr -> Type -> TCM Term
checkPath TypedBinding
b Expr
body Type
t
          else ArgName -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
ArgName -> m a
genericError (ArgName -> TCM Term) -> ArgName -> TCM Term
forall a b. (a -> b) -> a -> b
$ [ArgName] -> ArgName
unwords
                 [ ArgName
"Option --cubical/--erased-cubical needed to build"
                 , ArgName
"a path with a lambda abstraction"
                 ]

    postpone :: Blocker -> Type -> TCM Term
postpone Blocker
blocker Type
tgt = (TypeCheckingProblem -> Blocker -> TCM Term)
-> Blocker -> TypeCheckingProblem -> TCM Term
forall a b c. (a -> b -> c) -> b -> a -> c
flip TypeCheckingProblem -> Blocker -> TCM Term
postponeTypeCheckingProblem Blocker
blocker (TypeCheckingProblem -> TCM Term)
-> TypeCheckingProblem -> TCM Term
forall a b. (a -> b) -> a -> b
$
      Comparison -> Expr -> Type -> TypeCheckingProblem
CheckExpr Comparison
cmp (ExprInfo -> LamBinding -> Expr -> Expr
A.Lam ExprInfo
A.exprNoRange (TypedBinding -> LamBinding
A.DomainFull TypedBinding
b) Expr
body) Type
tgt

    dontUseTargetType :: TCM Term
dontUseTargetType = do
      -- Checking λ (xs : argsT) → body : target
      ArgName -> Int -> TCM () -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> m () -> m ()
verboseS ArgName
"tc.term.lambda" Int
5 (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$ ArgName -> TCM ()
forall (m :: * -> *). MonadStatistics m => ArgName -> m ()
tick ArgName
"lambda-no-target-type"

      -- First check that argsT is a valid type
      Type
argsT <- TCM Type -> TCM Type
forall (m :: * -> *) a.
(MonadTCEnv m, HasOptions m, MonadDebug m) =>
m a -> m a
workOnTypes (TCM Type -> TCM Type) -> TCM Type -> TCM Type
forall a b. (a -> b) -> a -> b
$ Expr -> TCM Type
isType_ Expr
typ
      let tel :: Telescope
tel = NonEmpty (NamedArg Name) -> Type -> Telescope
namedBindsToTel1 NonEmpty (NamedArg Name)
xs Type
argsT
      ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.lambda" Int
30 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ TCMT IO Doc
"dontUseTargetType tel =" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Telescope -> TCMT IO Doc
forall (m :: * -> *) a. (Applicative m, Pretty a) => a -> m Doc
pretty Telescope
tel

      -- Andreas, 2015-05-28 Issue 1523
      -- If argsT is a SizeLt, it must be non-empty to avoid non-termination.
      -- TODO: do we need to block checkExpr?
      Term -> TCM ()
checkSizeLtSat (Term -> TCM ()) -> Term -> TCM ()
forall a b. (a -> b) -> a -> b
$ Type -> Term
forall t a. Type'' t a -> a
unEl Type
argsT

      -- Jesper 2019-12-17, #4261: we need to postpone here if
      -- checking of the record pattern fails; if we try to catch
      -- higher up the metas created during checking of @argsT@ are
      -- not available.
      let postponeOnBlockedPattern :: TCM (Type, Term) -> TCM (Type, Term)
postponeOnBlockedPattern TCM (Type, Term)
m = TCM (Type, Term)
m TCM (Type, Term)
-> ((TCErr, Blocker) -> TCM (Type, Term)) -> TCM (Type, Term)
forall a. TCM a -> ((TCErr, Blocker) -> TCM a) -> TCM a
`catchIlltypedPatternBlockedOnMeta` \(TCErr
err , Blocker
x) -> do
            ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term" Int
50 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat ([TCMT IO Doc] -> TCMT IO Doc) -> [TCMT IO Doc] -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$
              [ TCMT IO Doc
"checking record pattern stuck on meta: " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (Blocker -> ArgName
forall a. Show a => a -> ArgName
show Blocker
x) ]
            Type
t1 <- (NonEmpty (NamedArg Name), Type) -> TCM Type -> TCM Type
forall b (m :: * -> *) a.
(AddContext b, MonadAddContext m) =>
b -> m a -> m a
forall (m :: * -> *) a.
MonadAddContext m =>
(NonEmpty (NamedArg Name), Type) -> m a -> m a
addContext (NonEmpty (NamedArg Name)
xs, Type
argsT) (TCM Type -> TCM Type) -> TCM Type -> TCM Type
forall a b. (a -> b) -> a -> b
$ TCM Type -> TCM Type
forall (m :: * -> *) a.
(MonadTCEnv m, HasOptions m, MonadDebug m) =>
m a -> m a
workOnTypes TCM Type
newTypeMeta_
            let e :: Expr
e    = ExprInfo -> LamBinding -> Expr -> Expr
A.Lam ExprInfo
A.exprNoRange (TypedBinding -> LamBinding
A.DomainFull TypedBinding
b) Expr
body
                tgt' :: Type
tgt' = Telescope -> Type -> Type
telePi Telescope
tel Type
t1
            Term
w <- TypeCheckingProblem -> Blocker -> TCM Term
postponeTypeCheckingProblem (Comparison -> Expr -> Type -> TypeCheckingProblem
CheckExpr Comparison
cmp Expr
e Type
tgt') Blocker
x
            (Type, Term) -> TCM (Type, Term)
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Type
tgt' , Term
w)

      -- Now check body : ?t₁
      -- DONT USE tel for addContext, as it loses NameIds.
      -- WRONG: v <- addContext tel $ checkExpr body t1
      (Type
target0 , Term
w) <- TCM (Type, Term) -> TCM (Type, Term)
postponeOnBlockedPattern (TCM (Type, Term) -> TCM (Type, Term))
-> TCM (Type, Term) -> TCM (Type, Term)
forall a b. (a -> b) -> a -> b
$
         (NonEmpty (NamedArg Name), Type)
-> TCM (Type, Term) -> TCM (Type, Term)
forall b (m :: * -> *) a.
(AddContext b, MonadAddContext m) =>
b -> m a -> m a
forall (m :: * -> *) a.
MonadAddContext m =>
(NonEmpty (NamedArg Name), Type) -> m a -> m a
addContext (NonEmpty (NamedArg Name)
xs, Type
argsT) (TCM (Type, Term) -> TCM (Type, Term))
-> TCM (Type, Term) -> TCM (Type, Term)
forall a b. (a -> b) -> a -> b
$ List1 (NamedArg (Binder' BindName))
-> TCM (Type, Term) -> TCM (Type, Term)
forall a. List1 (NamedArg (Binder' BindName)) -> TCM a -> TCM a
addTypedPatterns List1 (NamedArg (Binder' BindName))
xps (TCM (Type, Term) -> TCM (Type, Term))
-> TCM (Type, Term) -> TCM (Type, Term)
forall a b. (a -> b) -> a -> b
$ do
           Type
t1 <- TCM Type -> TCM Type
forall (m :: * -> *) a.
(MonadTCEnv m, HasOptions m, MonadDebug m) =>
m a -> m a
workOnTypes TCM Type
newTypeMeta_
           Term
v  <- Comparison -> Expr -> Type -> TCM Term
checkExpr' Comparison
cmp Expr
body Type
t1
           (Type, Term) -> TCM (Type, Term)
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Telescope -> Type -> Type
telePi Telescope
tel Type
t1 , Telescope -> Term -> Term
teleLam Telescope
tel Term
v)

      -- Do not coerce hidden lambdas
      if ArgInfo -> Bool
forall a. LensHiding a => a -> Bool
notVisible ArgInfo
info Bool -> Bool -> Bool
|| (NamedArg Name -> Bool) -> NonEmpty (NamedArg Name) -> Bool
forall (t :: * -> *) a. Foldable t => (a -> Bool) -> t a -> Bool
any NamedArg Name -> Bool
forall a. LensHiding a => a -> Bool
notVisible NonEmpty (NamedArg Name)
xs then do
        ProblemId
pid <- TCM () -> TCMT IO ProblemId
forall (m :: * -> *) a.
(MonadFresh ProblemId m, MonadConstraint m) =>
m a -> m ProblemId
newProblem_ (TCM () -> TCMT IO ProblemId) -> TCM () -> TCMT IO ProblemId
forall a b. (a -> b) -> a -> b
$ Type -> Type -> TCM ()
forall (m :: * -> *). MonadConversion m => Type -> Type -> m ()
leqType Type
target0 Type
target
        Type -> Term -> ProblemId -> TCM Term
forall (m :: * -> *).
(MonadMetaSolver m, MonadFresh Int m) =>
Type -> Term -> ProblemId -> m Term
blockTermOnProblem Type
target Term
w ProblemId
pid
      else do
        Comparison -> Term -> Type -> Type -> TCM Term
forall (m :: * -> *).
(MonadConversion m, MonadTCM m) =>
Comparison -> Term -> Type -> Type -> m Term
coerce Comparison
cmp Term
w Type
target0 Type
target


    useTargetType :: Telescope -> Type -> TCM Term
useTargetType tel :: Telescope
tel@(ExtendTel Dom Type
dom (Abs ArgName
y Telescope
EmptyTel)) Type
btyp = do
        ArgName -> Int -> TCM () -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> m () -> m ()
verboseS ArgName
"tc.term.lambda" Int
5 (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$ ArgName -> TCM ()
forall (m :: * -> *). MonadStatistics m => ArgName -> m ()
tick ArgName
"lambda-with-target-type"
        ArgName -> Int -> ArgName -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> ArgName -> m ()
reportSLn ArgName
"tc.term.lambda" Int
30 (ArgName -> TCM ()) -> ArgName -> TCM ()
forall a b. (a -> b) -> a -> b
$ ArgName
"useTargetType y  = " ArgName -> ArgName -> ArgName
forall a. [a] -> [a] -> [a]
++ ArgName
y

        let (NamedArg Name
x :| []) = NonEmpty (NamedArg Name)
xs
        Bool -> TCM () -> TCM ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
unless (Dom Type -> ArgInfo -> Bool
forall a b. (LensHiding a, LensHiding b) => a -> b -> Bool
sameHiding Dom Type
dom ArgInfo
info) (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$ TypeError -> TCM ()
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
TypeError -> m a
typeError (TypeError -> TCM ()) -> TypeError -> TCM ()
forall a b. (a -> b) -> a -> b
$ Type -> TypeError
WrongHidingInLambda Type
target
        Bool -> TCM () -> TCM ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
when (Maybe (WithOrigin (Ranged ArgName)) -> Bool
forall a. Maybe a -> Bool
isJust (Maybe (WithOrigin (Ranged ArgName)) -> Bool)
-> Maybe (WithOrigin (Ranged ArgName)) -> Bool
forall a b. (a -> b) -> a -> b
$ NamedArg Name -> Maybe (NameOf (NamedArg Name))
forall a. LensNamed a => a -> Maybe (NameOf a)
getNameOf NamedArg Name
x) (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$
          -- Andreas, 2020-03-25, issue #4481: check for correct name
          Bool -> TCM () -> TCM ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
unless (Dom Type -> NamedArg Name -> Bool
forall a b.
(LensNamed a, LensNamed b, NameOf a ~ WithOrigin (Ranged ArgName),
 NameOf b ~ WithOrigin (Ranged ArgName)) =>
a -> b -> Bool
namedSame Dom Type
dom NamedArg Name
x) (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$
            NamedArg Name -> TCM () -> TCM ()
forall (m :: * -> *) x a.
(MonadTrace m, HasRange x) =>
x -> m a -> m a
setCurrentRange NamedArg Name
x (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$ TypeError -> TCM ()
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
TypeError -> m a
typeError (TypeError -> TCM ()) -> TypeError -> TCM ()
forall a b. (a -> b) -> a -> b
$ TypeError
WrongHidingInLHS
        -- Andreas, 2011-10-01 ignore relevance in lambda if not explicitly given
        ArgInfo
info <- Dom Type -> ArgInfo -> TCM ArgInfo
forall dom.
(LensAnnotation dom, LensModality dom) =>
dom -> ArgInfo -> TCM ArgInfo
lambdaModalityCheck Dom Type
dom ArgInfo
info
        -- Andreas, 2015-05-28 Issue 1523
        -- Ensure we are not stepping under a possibly non-existing size.
        -- TODO: do we need to block checkExpr?
        let a :: Type
a = Dom Type -> Type
forall t e. Dom' t e -> e
unDom Dom Type
dom
        Term -> TCM ()
checkSizeLtSat (Term -> TCM ()) -> Term -> TCM ()
forall a b. (a -> b) -> a -> b
$ Type -> Term
forall t a. Type'' t a -> a
unEl Type
a
        -- We only need to block the final term on the argument type
        -- comparison. The body will be blocked if necessary. We still want to
        -- compare the argument types first, so we spawn a new problem for that
        -- check.
        (ProblemId
pid, Type
argT) <- TCM Type -> TCMT IO (ProblemId, Type)
forall (m :: * -> *) a.
(MonadFresh ProblemId m, MonadConstraint m) =>
m a -> m (ProblemId, a)
newProblem (TCM Type -> TCMT IO (ProblemId, Type))
-> TCM Type -> TCMT IO (ProblemId, Type)
forall a b. (a -> b) -> a -> b
$ Expr -> Type -> TCM Type
isTypeEqualTo Expr
typ Type
a
        -- Andreas, Issue 630: take name from function type if lambda name is "_"
        Term
v <- Name -> ArgName -> Dom Type -> TCM Term -> TCM Term
forall a. Name -> ArgName -> Dom Type -> TCM a -> TCM a
lambdaAddContext (NamedArg Name -> Name
forall a. NamedArg a -> a
namedArg NamedArg Name
x) ArgName
y (ArgInfo -> Type -> Dom Type
forall a. ArgInfo -> a -> Dom a
defaultArgDom ArgInfo
info Type
argT) (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$
               List1 (NamedArg (Binder' BindName)) -> TCM Term -> TCM Term
forall a. List1 (NamedArg (Binder' BindName)) -> TCM a -> TCM a
addTypedPatterns List1 (NamedArg (Binder' BindName))
xps (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ Comparison -> Expr -> Type -> TCM Term
checkExpr' Comparison
cmp Expr
body Type
btyp
        Type -> Term -> ProblemId -> TCM Term
forall (m :: * -> *).
(MonadMetaSolver m, MonadFresh Int m) =>
Type -> Term -> ProblemId -> m Term
blockTermOnProblem Type
target (ArgInfo -> Abs Term -> Term
Lam ArgInfo
info (Abs Term -> Term) -> Abs Term -> Term
forall a b. (a -> b) -> a -> b
$ ArgName -> Term -> Abs Term
forall a. ArgName -> a -> Abs a
Abs (NamedArg Name -> ArgName
namedArgName NamedArg Name
x) Term
v) ProblemId
pid

    useTargetType Telescope
_ Type
_ = TCM Term
forall a. HasCallStack => a
__IMPOSSIBLE__

-- | Check that modality info in lambda is compatible with modality
--   coming from the function type.
--   If lambda has no user-given modality, copy that of function type.
lambdaModalityCheck :: (LensAnnotation dom, LensModality dom) => dom -> ArgInfo -> TCM ArgInfo
lambdaModalityCheck :: forall dom.
(LensAnnotation dom, LensModality dom) =>
dom -> ArgInfo -> TCM ArgInfo
lambdaModalityCheck dom
dom = Annotation -> ArgInfo -> TCM ArgInfo
forall dom. LensAnnotation dom => dom -> ArgInfo -> TCM ArgInfo
lambdaAnnotationCheck (dom -> Annotation
forall a. LensAnnotation a => a -> Annotation
getAnnotation dom
dom) (ArgInfo -> TCM ArgInfo)
-> (ArgInfo -> TCM ArgInfo) -> ArgInfo -> TCM ArgInfo
forall (m :: * -> *) b c a.
Monad m =>
(b -> m c) -> (a -> m b) -> a -> m c
<=< Modality -> ArgInfo -> TCM ArgInfo
forall dom. LensCohesion dom => dom -> ArgInfo -> TCM ArgInfo
lambdaCohesionCheck Modality
m (ArgInfo -> TCM ArgInfo)
-> (ArgInfo -> TCM ArgInfo) -> ArgInfo -> TCM ArgInfo
forall (m :: * -> *) b c a.
Monad m =>
(b -> m c) -> (a -> m b) -> a -> m c
<=< Modality -> ArgInfo -> TCM ArgInfo
forall dom. LensQuantity dom => dom -> ArgInfo -> TCM ArgInfo
lambdaQuantityCheck Modality
m (ArgInfo -> TCM ArgInfo)
-> (ArgInfo -> TCM ArgInfo) -> ArgInfo -> TCM ArgInfo
forall (m :: * -> *) b c a.
Monad m =>
(b -> m c) -> (a -> m b) -> a -> m c
<=< Modality -> ArgInfo -> TCM ArgInfo
forall dom. LensRelevance dom => dom -> ArgInfo -> TCM ArgInfo
lambdaIrrelevanceCheck Modality
m
  where m :: Modality
m = dom -> Modality
forall a. LensModality a => a -> Modality
getModality dom
dom

-- | Check that irrelevance info in lambda is compatible with irrelevance
--   coming from the function type.
--   If lambda has no user-given relevance, copy that of function type.
lambdaIrrelevanceCheck :: LensRelevance dom => dom -> ArgInfo -> TCM ArgInfo
lambdaIrrelevanceCheck :: forall dom. LensRelevance dom => dom -> ArgInfo -> TCM ArgInfo
lambdaIrrelevanceCheck dom
dom ArgInfo
info
    -- Case: no specific user annotation: use relevance of function type
  | ArgInfo -> Relevance
forall a. LensRelevance a => a -> Relevance
getRelevance ArgInfo
info Relevance -> Relevance -> Bool
forall a. Eq a => a -> a -> Bool
== Relevance
defaultRelevance = ArgInfo -> TCM ArgInfo
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (ArgInfo -> TCM ArgInfo) -> ArgInfo -> TCM ArgInfo
forall a b. (a -> b) -> a -> b
$ Relevance -> ArgInfo -> ArgInfo
forall a. LensRelevance a => Relevance -> a -> a
setRelevance (dom -> Relevance
forall a. LensRelevance a => a -> Relevance
getRelevance dom
dom) ArgInfo
info
    -- Case: explicit user annotation is taken seriously
  | Bool
otherwise = do
      let rPi :: Relevance
rPi  = dom -> Relevance
forall a. LensRelevance a => a -> Relevance
getRelevance dom
dom  -- relevance of function type
      let rLam :: Relevance
rLam = ArgInfo -> Relevance
forall a. LensRelevance a => a -> Relevance
getRelevance ArgInfo
info -- relevance of lambda
      Bool -> TCM () -> TCM ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
unless (Relevance -> Relevance -> Bool
sameRelevance Relevance
rPi Relevance
rLam) (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$
        TypeError -> TCM ()
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
TypeError -> m a
typeError TypeError
WrongIrrelevanceInLambda
      ArgInfo -> TCM ArgInfo
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return ArgInfo
info

-- | Check that quantity info in lambda is compatible with quantity
--   coming from the function type.
--   If lambda has no user-given quantity, copy that of function type.
lambdaQuantityCheck :: LensQuantity dom => dom -> ArgInfo -> TCM ArgInfo
lambdaQuantityCheck :: forall dom. LensQuantity dom => dom -> ArgInfo -> TCM ArgInfo
lambdaQuantityCheck dom
dom ArgInfo
info
    -- Case: no specific user annotation: use quantity of function type
  | ArgInfo -> Bool
forall a. LensQuantity a => a -> Bool
noUserQuantity ArgInfo
info = ArgInfo -> TCM ArgInfo
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (ArgInfo -> TCM ArgInfo) -> ArgInfo -> TCM ArgInfo
forall a b. (a -> b) -> a -> b
$ Quantity -> ArgInfo -> ArgInfo
forall a. LensQuantity a => Quantity -> a -> a
setQuantity (dom -> Quantity
forall a. LensQuantity a => a -> Quantity
getQuantity dom
dom) ArgInfo
info
    -- Case: explicit user annotation is taken seriously
  | Bool
otherwise = do
      let qPi :: Quantity
qPi  = dom -> Quantity
forall a. LensQuantity a => a -> Quantity
getQuantity dom
dom  -- quantity of function type
      let qLam :: Quantity
qLam = ArgInfo -> Quantity
forall a. LensQuantity a => a -> Quantity
getQuantity ArgInfo
info -- quantity of lambda
      Bool -> TCM () -> TCM ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
unless (Quantity
qPi Quantity -> Quantity -> Bool
`sameQuantity` Quantity
qLam) (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$ do
        TypeError -> TCM ()
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
TypeError -> m a
typeError TypeError
WrongQuantityInLambda
      ArgInfo -> TCM ArgInfo
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return ArgInfo
info

lambdaAnnotationCheck :: LensAnnotation dom => dom -> ArgInfo -> TCM ArgInfo
lambdaAnnotationCheck :: forall dom. LensAnnotation dom => dom -> ArgInfo -> TCM ArgInfo
lambdaAnnotationCheck dom
dom ArgInfo
info
    -- Case: no specific user annotation: use annotation of function type
  | ArgInfo -> Annotation
forall a. LensAnnotation a => a -> Annotation
getAnnotation ArgInfo
info Annotation -> Annotation -> Bool
forall a. Eq a => a -> a -> Bool
== Annotation
defaultAnnotation = ArgInfo -> TCM ArgInfo
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (ArgInfo -> TCM ArgInfo) -> ArgInfo -> TCM ArgInfo
forall a b. (a -> b) -> a -> b
$ Annotation -> ArgInfo -> ArgInfo
forall a. LensAnnotation a => Annotation -> a -> a
setAnnotation (dom -> Annotation
forall a. LensAnnotation a => a -> Annotation
getAnnotation dom
dom) ArgInfo
info
    -- Case: explicit user annotation is taken seriously
  | Bool
otherwise = do
      let aPi :: Annotation
aPi  = dom -> Annotation
forall a. LensAnnotation a => a -> Annotation
getAnnotation dom
dom  -- annotation of function type
      let aLam :: Annotation
aLam = ArgInfo -> Annotation
forall a. LensAnnotation a => a -> Annotation
getAnnotation ArgInfo
info -- annotation of lambda
      Bool -> TCM () -> TCM ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
unless (Annotation
aPi Annotation -> Annotation -> Bool
forall a. Eq a => a -> a -> Bool
== Annotation
aLam) (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$ do
        TypeError -> TCM ()
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
TypeError -> m a
typeError (TypeError -> TCM ()) -> TypeError -> TCM ()
forall a b. (a -> b) -> a -> b
$ ArgName -> TypeError
GenericError (ArgName -> TypeError) -> ArgName -> TypeError
forall a b. (a -> b) -> a -> b
$ ArgName
"Wrong annotation in lambda"
      ArgInfo -> TCM ArgInfo
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return ArgInfo
info

-- | Check that cohesion info in lambda is compatible with cohesion
--   coming from the function type.
--   If lambda has no user-given cohesion, copy that of function type.
lambdaCohesionCheck :: LensCohesion dom => dom -> ArgInfo -> TCM ArgInfo
lambdaCohesionCheck :: forall dom. LensCohesion dom => dom -> ArgInfo -> TCM ArgInfo
lambdaCohesionCheck dom
dom ArgInfo
info
    -- Case: no specific user annotation: use cohesion of function type
  | ArgInfo -> Cohesion
forall a. LensCohesion a => a -> Cohesion
getCohesion ArgInfo
info Cohesion -> Cohesion -> Bool
forall a. Eq a => a -> a -> Bool
== Cohesion
defaultCohesion = ArgInfo -> TCM ArgInfo
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (ArgInfo -> TCM ArgInfo) -> ArgInfo -> TCM ArgInfo
forall a b. (a -> b) -> a -> b
$ Cohesion -> ArgInfo -> ArgInfo
forall a. LensCohesion a => Cohesion -> a -> a
setCohesion (dom -> Cohesion
forall a. LensCohesion a => a -> Cohesion
getCohesion dom
dom) ArgInfo
info
    -- Case: explicit user annotation is taken seriously
  | Bool
otherwise = do
      let cPi :: Cohesion
cPi  = dom -> Cohesion
forall a. LensCohesion a => a -> Cohesion
getCohesion dom
dom  -- cohesion of function type
      let cLam :: Cohesion
cLam = ArgInfo -> Cohesion
forall a. LensCohesion a => a -> Cohesion
getCohesion ArgInfo
info -- cohesion of lambda
      Bool -> TCM () -> TCM ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
unless (Cohesion
cPi Cohesion -> Cohesion -> Bool
`sameCohesion` Cohesion
cLam) (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$ do
        -- if there is a cohesion annotation then
        -- it better match the domain.
        TypeError -> TCM ()
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
TypeError -> m a
typeError TypeError
WrongCohesionInLambda
      ArgInfo -> TCM ArgInfo
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return ArgInfo
info

-- Andreas, issue #630: take name from function type if lambda name is "_".
lambdaAddContext :: Name -> ArgName -> Dom Type -> TCM a -> TCM a
lambdaAddContext :: forall a. Name -> ArgName -> Dom Type -> TCM a -> TCM a
lambdaAddContext Name
x ArgName
y Dom Type
dom
  | Name -> Bool
forall a. IsNoName a => a -> Bool
isNoName Name
x = (ArgName, Dom Type) -> TCMT IO a -> TCMT IO a
forall b (m :: * -> *) a.
(AddContext b, MonadAddContext m) =>
b -> m a -> m a
forall (m :: * -> *) a.
MonadAddContext m =>
(ArgName, Dom Type) -> m a -> m a
addContext (ArgName
y, Dom Type
dom)                 -- Note: String instance
  | Bool
otherwise  = (Name, Dom Type) -> TCMT IO a -> TCMT IO a
forall b (m :: * -> *) a.
(AddContext b, MonadAddContext m) =>
b -> m a -> m a
forall (m :: * -> *) a.
MonadAddContext m =>
(Name, Dom Type) -> m a -> m a
addContext (Name
x, Dom Type
dom)                 -- Name instance of addContext

-- | Checking a lambda whose domain type has already been checked.
checkPostponedLambda :: Comparison -> Arg (List1 (WithHiding Name), Maybe Type) -> A.Expr -> Type -> TCM Term
-- checkPostponedLambda cmp args@(Arg _    ([]    , _ )) body target = do
--   checkExpr' cmp body target
checkPostponedLambda :: Comparison
-> Arg (List1 (WithHiding Name), Maybe Type)
-> Expr
-> Type
-> TCM Term
checkPostponedLambda Comparison
cmp args :: Arg (List1 (WithHiding Name), Maybe Type)
args@(Arg ArgInfo
info (WithHiding Hiding
h Name
x :| [WithHiding Name]
xs, Maybe Type
mt)) Expr
body Type
target = do
  let postpone :: Blocker -> Type -> TCM Term
postpone Blocker
_ Type
t = TypeCheckingProblem -> TCM Term
postponeTypeCheckingProblem_ (TypeCheckingProblem -> TCM Term)
-> TypeCheckingProblem -> TCM Term
forall a b. (a -> b) -> a -> b
$ Comparison
-> Arg (List1 (WithHiding Name), Maybe Type)
-> Expr
-> Type
-> TypeCheckingProblem
CheckLambda Comparison
cmp Arg (List1 (WithHiding Name), Maybe Type)
args Expr
body Type
t
      lamHiding :: Hiding
lamHiding = Hiding -> Hiding -> Hiding
forall a. Monoid a => a -> a -> a
mappend Hiding
h (Hiding -> Hiding) -> Hiding -> Hiding
forall a b. (a -> b) -> a -> b
$ ArgInfo -> Hiding
forall a. LensHiding a => a -> Hiding
getHiding ArgInfo
info
  Hiding
-> Type
-> (Blocker -> Type -> TCM Term)
-> (Type -> TCM Term)
-> TCM Term
insertHiddenLambdas Hiding
lamHiding Type
target Blocker -> Type -> TCM Term
postpone ((Type -> TCM Term) -> TCM Term) -> (Type -> TCM Term) -> TCM Term
forall a b. (a -> b) -> a -> b
$ \ t :: Type
t@(El Sort' Term
_ (Pi Dom Type
dom Abs Type
b)) -> do
    -- Andreas, 2011-10-01 ignore relevance in lambda if not explicitly given
    ArgInfo
info' <- Hiding -> ArgInfo -> ArgInfo
forall a. LensHiding a => Hiding -> a -> a
setHiding Hiding
lamHiding (ArgInfo -> ArgInfo) -> TCM ArgInfo -> TCM ArgInfo
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> Dom Type -> ArgInfo -> TCM ArgInfo
forall dom.
(LensAnnotation dom, LensModality dom) =>
dom -> ArgInfo -> TCM ArgInfo
lambdaModalityCheck Dom Type
dom ArgInfo
info
    -- We only need to block the final term on the argument type
    -- comparison. The body will be blocked if necessary. We still want to
    -- compare the argument types first, so we spawn a new problem for that
    -- check.
    Maybe ProblemId
mpid <- Maybe Type
-> TCMT IO (Maybe ProblemId)
-> (Type -> TCMT IO (Maybe ProblemId))
-> TCMT IO (Maybe ProblemId)
forall a b. Maybe a -> b -> (a -> b) -> b
caseMaybe Maybe Type
mt (Maybe ProblemId -> TCMT IO (Maybe ProblemId)
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Maybe ProblemId
forall a. Maybe a
Nothing) ((Type -> TCMT IO (Maybe ProblemId)) -> TCMT IO (Maybe ProblemId))
-> (Type -> TCMT IO (Maybe ProblemId)) -> TCMT IO (Maybe ProblemId)
forall a b. (a -> b) -> a -> b
$ \ Type
ascribedType -> ProblemId -> Maybe ProblemId
forall a. a -> Maybe a
Just (ProblemId -> Maybe ProblemId)
-> TCMT IO ProblemId -> TCMT IO (Maybe ProblemId)
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> do
      TCM () -> TCMT IO ProblemId
forall (m :: * -> *) a.
(MonadFresh ProblemId m, MonadConstraint m) =>
m a -> m ProblemId
newProblem_ (TCM () -> TCMT IO ProblemId) -> TCM () -> TCMT IO ProblemId
forall a b. (a -> b) -> a -> b
$ Type -> Type -> TCM ()
forall (m :: * -> *). MonadConversion m => Type -> Type -> m ()
leqType (Dom Type -> Type
forall t e. Dom' t e -> e
unDom Dom Type
dom) Type
ascribedType
    -- We type-check the body with the ascribedType given by the user
    -- to get better error messages.
    -- Using the type dom from the usage context would be more precise,
    -- though.
    -- TODO: quantity
    let dom' :: Dom Type
dom' = Relevance -> Dom Type -> Dom Type
forall a. LensRelevance a => Relevance -> a -> a
setRelevance (ArgInfo -> Relevance
forall a. LensRelevance a => a -> Relevance
getRelevance ArgInfo
info') (Dom Type -> Dom Type)
-> (Dom Type -> Dom Type) -> Dom Type -> Dom Type
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Hiding -> Dom Type -> Dom Type
forall a. LensHiding a => Hiding -> a -> a
setHiding Hiding
lamHiding (Dom Type -> Dom Type) -> Dom Type -> Dom Type
forall a b. (a -> b) -> a -> b
$
          Dom Type -> (Type -> Dom Type) -> Maybe Type -> Dom Type
forall b a. b -> (a -> b) -> Maybe a -> b
maybe Dom Type
dom (Dom Type
dom Dom Type -> Type -> Dom Type
forall (f :: * -> *) a b. Functor f => f a -> b -> f b
$>) Maybe Type
mt
    Term
v <- Name -> ArgName -> Dom Type -> TCM Term -> TCM Term
forall a. Name -> ArgName -> Dom Type -> TCM a -> TCM a
lambdaAddContext Name
x (Abs Type -> ArgName
forall a. Abs a -> ArgName
absName Abs Type
b) Dom Type
dom'  (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$
      Comparison
-> Arg ([WithHiding Name], Maybe Type) -> Expr -> Type -> TCM Term
checkPostponedLambda0 Comparison
cmp (ArgInfo
-> ([WithHiding Name], Maybe Type)
-> Arg ([WithHiding Name], Maybe Type)
forall e. ArgInfo -> e -> Arg e
Arg ArgInfo
info ([WithHiding Name]
xs, Maybe Type
mt)) Expr
body (Type -> TCM Term) -> Type -> TCM Term
forall a b. (a -> b) -> a -> b
$ Abs Type -> Type
forall a. Subst a => Abs a -> a
absBody Abs Type
b
    let v' :: Term
v' = ArgInfo -> Abs Term -> Term
Lam ArgInfo
info' (Abs Term -> Term) -> Abs Term -> Term
forall a b. (a -> b) -> a -> b
$ ArgName -> Term -> Abs Term
forall a. ArgName -> a -> Abs a
Abs (Name -> ArgName
nameToArgName Name
x) Term
v
    TCM Term -> (ProblemId -> TCM Term) -> Maybe ProblemId -> TCM Term
forall b a. b -> (a -> b) -> Maybe a -> b
maybe (Term -> TCM Term
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Term
v') (Type -> Term -> ProblemId -> TCM Term
forall (m :: * -> *).
(MonadMetaSolver m, MonadFresh Int m) =>
Type -> Term -> ProblemId -> m Term
blockTermOnProblem Type
t Term
v') Maybe ProblemId
mpid

checkPostponedLambda0 :: Comparison -> Arg ([WithHiding Name], Maybe Type) -> A.Expr -> Type -> TCM Term
checkPostponedLambda0 :: Comparison
-> Arg ([WithHiding Name], Maybe Type) -> Expr -> Type -> TCM Term
checkPostponedLambda0 Comparison
cmp (Arg ArgInfo
_    ([]    , Maybe Type
_ )) Expr
body Type
target =
  Comparison -> Expr -> Type -> TCM Term
checkExpr' Comparison
cmp Expr
body Type
target
checkPostponedLambda0 Comparison
cmp (Arg ArgInfo
info (WithHiding Name
x : [WithHiding Name]
xs, Maybe Type
mt)) Expr
body Type
target =
  Comparison
-> Arg (List1 (WithHiding Name), Maybe Type)
-> Expr
-> Type
-> TCM Term
checkPostponedLambda Comparison
cmp (ArgInfo
-> (List1 (WithHiding Name), Maybe Type)
-> Arg (List1 (WithHiding Name), Maybe Type)
forall e. ArgInfo -> e -> Arg e
Arg ArgInfo
info (WithHiding Name
x WithHiding Name -> [WithHiding Name] -> List1 (WithHiding Name)
forall a. a -> [a] -> NonEmpty a
:| [WithHiding Name]
xs, Maybe Type
mt)) Expr
body Type
target


-- | Insert hidden lambda until the hiding info of the domain type
--   matches the expected hiding info.
--   Throws 'WrongHidingInLambda'
insertHiddenLambdas
  :: Hiding                       -- ^ Expected hiding.
  -> Type                         -- ^ Expected to be a function type.
  -> (Blocker -> Type -> TCM Term) -- ^ Continuation on blocked type.
  -> (Type -> TCM Term)           -- ^ Continuation when expected hiding found.
                                  --   The continuation may assume that the @Type@
                                  --   is of the form @(El _ (Pi _ _))@.
  -> TCM Term                     -- ^ Term with hidden lambda inserted.
insertHiddenLambdas :: Hiding
-> Type
-> (Blocker -> Type -> TCM Term)
-> (Type -> TCM Term)
-> TCM Term
insertHiddenLambdas Hiding
h Type
target Blocker -> Type -> TCM Term
postpone Type -> TCM Term
ret = do
  -- If the target type is blocked, we postpone,
  -- because we do not know if a hidden lambda needs to be inserted.
  Type
-> (Blocker -> Type -> TCM Term)
-> (NotBlocked -> Type -> TCM Term)
-> TCM Term
forall t (m :: * -> *) a.
(Reduce t, IsMeta t, MonadReduce m) =>
t -> (Blocker -> t -> m a) -> (NotBlocked -> t -> m a) -> m a
ifBlocked Type
target Blocker -> Type -> TCM Term
postpone ((NotBlocked -> Type -> TCM Term) -> TCM Term)
-> (NotBlocked -> Type -> TCM Term) -> TCM Term
forall a b. (a -> b) -> a -> b
$ \ NotBlocked
_ Type
t -> do
    case Type -> Term
forall t a. Type'' t a -> a
unEl Type
t of

      Pi Dom Type
dom Abs Type
b -> do
        let h' :: Hiding
h' = Dom Type -> Hiding
forall a. LensHiding a => a -> Hiding
getHiding Dom Type
dom
        -- Found expected hiding: return function type.
        if Hiding -> Hiding -> Bool
forall a b. (LensHiding a, LensHiding b) => a -> b -> Bool
sameHiding Hiding
h Hiding
h' then Type -> TCM Term
ret Type
t else do
          -- Found a visible argument but expected a hidden one:
          -- That's an error, as we cannot insert a visible lambda.
          if Hiding -> Bool
forall a. LensHiding a => a -> Bool
visible Hiding
h' then TypeError -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
TypeError -> m a
typeError (TypeError -> TCM Term) -> TypeError -> TCM Term
forall a b. (a -> b) -> a -> b
$ Type -> TypeError
WrongHidingInLambda Type
target else do
            -- Otherwise, we found a hidden argument that we can insert.
            let x :: ArgName
x    = Abs Type -> ArgName
forall a. Abs a -> ArgName
absName Abs Type
b
            ArgInfo -> Abs Term -> Term
Lam (Origin -> ArgInfo -> ArgInfo
forall a. LensOrigin a => Origin -> a -> a
setOrigin Origin
Inserted (ArgInfo -> ArgInfo) -> ArgInfo -> ArgInfo
forall a b. (a -> b) -> a -> b
$ Dom Type -> ArgInfo
forall t e. Dom' t e -> ArgInfo
domInfo Dom Type
dom) (Abs Term -> Term) -> (Term -> Abs Term) -> Term -> Term
forall b c a. (b -> c) -> (a -> b) -> a -> c
. ArgName -> Term -> Abs Term
forall a. ArgName -> a -> Abs a
Abs ArgName
x (Term -> Term) -> TCM Term -> TCM Term
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> do
              (ArgName, Dom Type) -> TCM Term -> TCM Term
forall b (m :: * -> *) a.
(AddContext b, MonadAddContext m) =>
b -> m a -> m a
forall (m :: * -> *) a.
MonadAddContext m =>
(ArgName, Dom Type) -> m a -> m a
addContext (ArgName
x, Dom Type
dom) (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ Hiding
-> Type
-> (Blocker -> Type -> TCM Term)
-> (Type -> TCM Term)
-> TCM Term
insertHiddenLambdas Hiding
h (Abs Type -> Type
forall a. Subst a => Abs a -> a
absBody Abs Type
b) Blocker -> Type -> TCM Term
postpone Type -> TCM Term
ret

      Term
_ -> TypeError -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
TypeError -> m a
typeError (TypeError -> TCM Term) -> (Doc -> TypeError) -> Doc -> TCM Term
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Doc -> TypeError
GenericDocError (Doc -> TCM Term) -> TCMT IO Doc -> TCM Term
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< do
        TCMT IO Doc
"Expected " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Type -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Type -> m Doc
prettyTCM Type
target TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> TCMT IO Doc
" to be a function type"

-- | @checkAbsurdLambda i h e t@ checks absurd lambda against type @t@.
--   Precondition: @e = AbsurdLam i h@
checkAbsurdLambda :: Comparison -> A.ExprInfo -> Hiding -> A.Expr -> Type -> TCM Term
checkAbsurdLambda :: Comparison -> ExprInfo -> Hiding -> Expr -> Type -> TCM Term
checkAbsurdLambda Comparison
cmp ExprInfo
i Hiding
h Expr
e Type
t =
  TCM Term -> TCM Term
forall a. TCM a -> TCM a
setRunTimeModeUnlessInHardCompileTimeMode (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ do
      -- Andreas, 2019-10-01: check absurd lambdas in non-erased mode.
      -- Otherwise, they are not usable in meta-solutions in the term world.
      -- See test/Succeed/Issue3176.agda for an absurd lambda
      -- created in types.
      -- #4743: Except if hard compile-time mode is enabled.
  Type
t <- Type -> TCM Type
forall a (m :: * -> *).
(InstantiateFull a, MonadReduce m) =>
a -> m a
instantiateFull Type
t
  Type
-> (Blocker -> Type -> TCM Term)
-> (NotBlocked -> Type -> TCM Term)
-> TCM Term
forall t (m :: * -> *) a.
(Reduce t, IsMeta t, MonadReduce m) =>
t -> (Blocker -> t -> m a) -> (NotBlocked -> t -> m a) -> m a
ifBlocked Type
t (\ Blocker
blocker Type
t' -> TypeCheckingProblem -> Blocker -> TCM Term
postponeTypeCheckingProblem (Comparison -> Expr -> Type -> TypeCheckingProblem
CheckExpr Comparison
cmp Expr
e Type
t') Blocker
blocker) ((NotBlocked -> Type -> TCM Term) -> TCM Term)
-> (NotBlocked -> Type -> TCM Term) -> TCM Term
forall a b. (a -> b) -> a -> b
$ \ NotBlocked
_ Type
t' -> do
    case Type -> Term
forall t a. Type'' t a -> a
unEl Type
t' of
      Pi dom :: Dom Type
dom@(Dom{domInfo :: forall t e. Dom' t e -> ArgInfo
domInfo = ArgInfo
info', unDom :: forall t e. Dom' t e -> e
unDom = Type
a}) Abs Type
b
        | Bool -> Bool
not (Hiding -> ArgInfo -> Bool
forall a b. (LensHiding a, LensHiding b) => a -> b -> Bool
sameHiding Hiding
h ArgInfo
info') -> TypeError -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
TypeError -> m a
typeError (TypeError -> TCM Term) -> TypeError -> TCM Term
forall a b. (a -> b) -> a -> b
$ Type -> TypeError
WrongHidingInLambda Type
t'
        | Bool
otherwise -> Type -> TCM Term -> TCM Term
forall (m :: * -> *).
(MonadMetaSolver m, MonadConstraint m, MonadFresh Int m,
 MonadFresh ProblemId m) =>
Type -> m Term -> m Term
blockTerm Type
t' (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ do
          Range -> Type -> TCM ()
ensureEmptyType (ExprInfo -> Range
forall a. HasRange a => a -> Range
getRange ExprInfo
i) Type
a
          -- Add helper function
          ModuleName
top <- TCMT IO ModuleName
forall (m :: * -> *). MonadTCEnv m => m ModuleName
currentModule
          QName
aux <- ModuleName -> Name -> QName
qualify ModuleName
top (Name -> QName) -> TCMT IO Name -> TCMT IO QName
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> (Range, ArgName) -> TCMT IO Name
forall a (m :: * -> *).
(FreshName a, MonadFresh NameId m) =>
a -> m Name
forall (m :: * -> *).
MonadFresh NameId m =>
(Range, ArgName) -> m Name
freshName_ (ExprInfo -> Range
forall a. HasRange a => a -> Range
getRange ExprInfo
i, ArgName
absurdLambdaName)
          -- if we are in irrelevant / erased position, the helper function
          -- is added as irrelevant / erased
          Modality
mod <- TCMT IO Modality
forall (m :: * -> *). MonadTCEnv m => m Modality
currentModality
          ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.absurd" Int
10 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
            [ (TCMT IO Doc
"Adding absurd function" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Modality -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Modality -> m Doc
prettyTCM Modality
mod) TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall a. Semigroup a => a -> a -> a
<> QName -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => QName -> m Doc
prettyTCM QName
aux
            , Int -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Functor m => Int -> m Doc -> m Doc
nest Int
2 (TCMT IO Doc -> TCMT IO Doc) -> TCMT IO Doc -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ TCMT IO Doc
"of type" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Type -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Type -> m Doc
prettyTCM Type
t'
            ]
          Language
lang <- TCMT IO Language
forall (m :: * -> *). HasOptions m => m Language
getLanguage
          FunctionData
fun  <- TCMT IO FunctionData
forall (m :: * -> *). HasOptions m => m FunctionData
emptyFunctionData
          QName -> Definition -> TCM ()
addConstant QName
aux (Definition -> TCM ()) -> Definition -> TCM ()
forall a b. (a -> b) -> a -> b
$
            (\ Defn
d -> (ArgInfo -> QName -> Type -> Language -> Defn -> Definition
defaultDefn (Modality -> ArgInfo -> ArgInfo
forall a. LensModality a => Modality -> a -> a
setModality Modality
mod ArgInfo
info') QName
aux Type
t' Language
lang Defn
d)
                    { defPolarity       = [Nonvariant]
                    , defArgOccurrences = [Unused] })
            (Defn -> Definition) -> Defn -> Definition
forall a b. (a -> b) -> a -> b
$ FunctionData -> Defn
FunctionDefn FunctionData
fun
              { _funClauses        =
                  [ Clause
                    { clauseLHSRange  = getRange e
                    , clauseFullRange = getRange e
                    , clauseTel       = telFromList [fmap (absurdPatternName,) dom]
                    , namedClausePats = [Arg info' $ Named (Just $ WithOrigin Inserted $ unranged $ absName b) $ absurdP 0]
                    , clauseBody      = Nothing
                    , clauseType      = Just $ setModality mod $ defaultArg $ absBody b
                    , clauseCatchall    = True      -- absurd clauses are safe as catch-alls
                    , clauseExact       = Just False
                    , clauseRecursive   = Just False
                    , clauseUnreachable = Just True -- absurd clauses are unreachable
                    , clauseEllipsis    = NoEllipsis
                    , clauseWhereModule = Nothing
                    }
                  ]
              , _funCompiled       = Just $ Fail [Arg info' "()"]
              , _funSplitTree      = Just $ SplittingDone 0
              , _funMutual         = Just []
              , _funTerminates     = Just True
              , _funExtLam         = Just $ ExtLamInfo top True empty
              }
          -- Andreas 2012-01-30: since aux is lifted to toplevel
          -- it needs to be applied to the current telescope (issue 557)
          QName -> Elims -> Term
Def QName
aux (Elims -> Term) -> (Telescope -> Elims) -> Telescope -> Term
forall b c a. (b -> c) -> (a -> b) -> a -> c
. (Arg Term -> Elim) -> [Arg Term] -> Elims
forall a b. (a -> b) -> [a] -> [b]
map Arg Term -> Elim
forall a. Arg a -> Elim' a
Apply ([Arg Term] -> Elims)
-> (Telescope -> [Arg Term]) -> Telescope -> Elims
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Telescope -> [Arg Term]
forall a t. DeBruijn a => Tele (Dom t) -> [Arg a]
teleArgs (Telescope -> Term) -> TCMT IO Telescope -> TCM Term
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> TCMT IO Telescope
forall (m :: * -> *). (Applicative m, MonadTCEnv m) => m Telescope
getContextTelescope
      Term
_ -> TypeError -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
TypeError -> m a
typeError (TypeError -> TCM Term) -> TypeError -> TCM Term
forall a b. (a -> b) -> a -> b
$ Type -> TypeError
ShouldBePi Type
t'

-- | @checkExtendedLambda i di erased qname cs e t@ check pattern matching lambda.
-- Precondition: @e = ExtendedLam i di erased qname cs@
checkExtendedLambda ::
  Comparison -> A.ExprInfo -> A.DefInfo -> Erased -> QName ->
  List1 A.Clause -> A.Expr -> Type -> TCM Term
checkExtendedLambda :: Comparison
-> ExprInfo
-> DefInfo
-> Erased
-> QName
-> List1 Clause
-> Expr
-> Type
-> TCM Term
checkExtendedLambda Comparison
cmp ExprInfo
i DefInfo
di Erased
erased QName
qname List1 Clause
cs Expr
e Type
t = do
  Modality
mod <- TCMT IO Modality
forall (m :: * -> *). MonadTCEnv m => m Modality
currentModality
  if Erased -> Bool
isErased Erased
erased Bool -> Bool -> Bool
&& Bool -> Bool
not (Modality -> Bool
forall a. LensQuantity a => a -> Bool
hasQuantity0 Modality
mod) then
    ArgName -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
ArgName -> m a
genericError (ArgName -> TCM Term) -> ArgName -> TCM Term
forall a b. (a -> b) -> a -> b
$ [ArgName] -> ArgName
unwords
      [ ArgName
"Erased pattern-matching lambdas may only be used in erased"
      , ArgName
"contexts"
      ]
   else Erased -> TCM Term -> TCM Term
forall a. Erased -> TCM a -> TCM a
setModeUnlessInHardCompileTimeMode Erased
erased (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ do
        -- Erased pattern-matching lambdas are checked in hard
        -- compile-time mode. For non-erased pattern-matching lambdas
        -- run-time mode is used, unless the current mode is hard
        -- compile-time mode.
   -- Andreas, 2016-06-16 issue #2045
   -- Try to get rid of unsolved size metas before we
   -- fix the type of the extended lambda auxiliary function
   DefaultToInfty -> TCM ()
solveSizeConstraints DefaultToInfty
DontDefaultToInfty
   ModuleName
lamMod <- TCMT IO ModuleName -> TCMT IO ModuleName
forall a. TCM a -> TCM a
inFreshModuleIfFreeParams TCMT IO ModuleName
forall (m :: * -> *). MonadTCEnv m => m ModuleName
currentModule  -- #2883: need a fresh module if refined params
   Type
t <- Type -> TCM Type
forall a (m :: * -> *).
(InstantiateFull a, MonadReduce m) =>
a -> m a
instantiateFull Type
t
   Type
-> (Blocker -> Type -> TCM Term)
-> (NotBlocked -> Type -> TCM Term)
-> TCM Term
forall t (m :: * -> *) a.
(Reduce t, IsMeta t, MonadReduce m) =>
t -> (Blocker -> t -> m a) -> (NotBlocked -> t -> m a) -> m a
ifBlocked Type
t (\ Blocker
m Type
t' -> TypeCheckingProblem -> TCM Term
postponeTypeCheckingProblem_ (TypeCheckingProblem -> TCM Term)
-> TypeCheckingProblem -> TCM Term
forall a b. (a -> b) -> a -> b
$ Comparison -> Expr -> Type -> TypeCheckingProblem
CheckExpr Comparison
cmp Expr
e Type
t') ((NotBlocked -> Type -> TCM Term) -> TCM Term)
-> (NotBlocked -> Type -> TCM Term) -> TCM Term
forall a b. (a -> b) -> a -> b
$ \ NotBlocked
_ Type
t -> do
     MutualId
j   <- TCM MutualId
currentOrFreshMutualBlock
     Modality
mod <- TCMT IO Modality
forall (m :: * -> *). MonadTCEnv m => m Modality
currentModality
     let info :: ArgInfo
info = Modality -> ArgInfo -> ArgInfo
forall a. LensModality a => Modality -> a -> a
setModality Modality
mod ArgInfo
defaultArgInfo

     ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.exlam" Int
20 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
       [ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
hsep
         [ ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (ArgName -> TCMT IO Doc) -> ArgName -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ IsAbstract -> ArgName
forall a. Show a => a -> ArgName
show (IsAbstract -> ArgName) -> IsAbstract -> ArgName
forall a b. (a -> b) -> a -> b
$ DefInfo -> IsAbstract
forall t. DefInfo' t -> IsAbstract
A.defAbstract DefInfo
di
         , TCMT IO Doc
"extended lambda's implementation"
         , TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Functor m => m Doc -> m Doc
doubleQuotes (TCMT IO Doc -> TCMT IO Doc) -> TCMT IO Doc -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ QName -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => QName -> m Doc
prettyTCM QName
qname
         , TCMT IO Doc
"has type:"
         ]
       , Type -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Type -> m Doc
prettyTCM Type
t -- <+> " where clauses: " <+> text (show cs)
       ]
     [Arg Term]
args     <- TCMT IO [Arg Term]
forall (m :: * -> *). (Applicative m, MonadTCEnv m) => m [Arg Term]
getContextArgs

     -- Andreas, Ulf, 2016-02-02: We want to postpone type checking an extended lambda
     -- in case the lhs checker failed due to insufficient type info for the patterns.
     -- Issues 480, 1159, 1811.
     IsAbstract -> TCM Term -> TCM Term
forall {m :: * -> *} {a}. MonadTCEnv m => IsAbstract -> m a -> m a
abstract (DefInfo -> IsAbstract
forall t. DefInfo' t -> IsAbstract
A.defAbstract DefInfo
di) (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ do
       -- Andreas, 2013-12-28: add extendedlambda as @Function@, not as @Axiom@;
       -- otherwise, @addClause@ in @checkFunDef'@ fails (see issue 1009).
       QName -> Definition -> TCM ()
addConstant QName
qname (Definition -> TCM ()) -> TCMT IO Definition -> TCM ()
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< do
         Language
lang <- TCMT IO Language
forall (m :: * -> *). HasOptions m => m Language
getLanguage
         Defn
fun  <- TCMT IO Defn
forall (m :: * -> *). HasOptions m => m Defn
emptyFunction
         Definition -> TCMT IO Definition
useTerPragma (Definition -> TCMT IO Definition)
-> Definition -> TCMT IO Definition
forall a b. (a -> b) -> a -> b
$
           (ArgInfo -> QName -> Type -> Language -> Defn -> Definition
defaultDefn ArgInfo
info QName
qname Type
t Language
lang Defn
fun)
             { defMutual = j }
       Type
-> ArgInfo
-> Maybe ExtLamInfo
-> Maybe QName
-> DefInfo
-> QName
-> [Clause]
-> TCM ()
checkFunDef' Type
t ArgInfo
info (ExtLamInfo -> Maybe ExtLamInfo
forall a. a -> Maybe a
Just (ExtLamInfo -> Maybe ExtLamInfo) -> ExtLamInfo -> Maybe ExtLamInfo
forall a b. (a -> b) -> a -> b
$ ModuleName -> Bool -> Maybe System -> ExtLamInfo
ExtLamInfo ModuleName
lamMod Bool
False Maybe System
forall a. Null a => a
empty) Maybe QName
forall a. Maybe a
Nothing DefInfo
di QName
qname ([Clause] -> TCM ()) -> [Clause] -> TCM ()
forall a b. (a -> b) -> a -> b
$
         List1 Clause -> [Item (List1 Clause)]
forall l. IsList l => l -> [Item l]
List1.toList List1 Clause
cs
       TCMT IO (Maybe MutualId) -> TCM () -> TCM ()
forall (m :: * -> *) a. Monad m => m (Maybe a) -> m () -> m ()
whenNothingM ((TCEnv -> Maybe MutualId) -> TCMT IO (Maybe MutualId)
forall (m :: * -> *) a. MonadTCEnv m => (TCEnv -> a) -> m a
asksTC TCEnv -> Maybe MutualId
envMutualBlock) (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$
         -- Andrea 10-03-2018: Should other checks be performed here too? e.g. termination/positivity/..
         QName -> TCM ()
checkIApplyConfluence_ QName
qname
       Term -> TCM Term
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Term -> TCM Term) -> Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ QName -> Elims -> Term
Def QName
qname (Elims -> Term) -> Elims -> Term
forall a b. (a -> b) -> a -> b
$ (Arg Term -> Elim) -> [Arg Term] -> Elims
forall a b. (a -> b) -> [a] -> [b]
map Arg Term -> Elim
forall a. Arg a -> Elim' a
Apply [Arg Term]
args
  where
    -- Concrete definitions cannot use information about abstract things.
    abstract :: IsAbstract -> m a -> m a
abstract IsAbstract
ConcreteDef = m a -> m a
forall (m :: * -> *) a. MonadTCEnv m => m a -> m a
inConcreteMode
    abstract IsAbstract
AbstractDef = m a -> m a
forall (m :: * -> *) a. MonadTCEnv m => m a -> m a
inAbstractMode

-- | Run a computation.
--
--   * If successful, that's it, we are done.
--
--   * If @NotADatatype a@ or @CannotEliminateWithPattern p a@
--     is thrown and type @a@ is blocked on some meta @x@,
--     reset any changes to the state and pass (the error and) @x@ to the handler.
--
--   * If @SplitError (UnificationStuck c tel us vs _)@ is thrown and the unification
--     problem @us =?= vs : tel@ is blocked on some meta @x@ pass @x@ to the handler.
--
--   * If another error was thrown or the type @a@ is not blocked, reraise the error.
--
--   Note that the returned meta might only exists in the state where the error was
--   thrown, thus, be an invalid 'MetaId' in the current state.
--
catchIlltypedPatternBlockedOnMeta :: TCM a -> ((TCErr, Blocker) -> TCM a) -> TCM a
catchIlltypedPatternBlockedOnMeta :: forall a. TCM a -> ((TCErr, Blocker) -> TCM a) -> TCM a
catchIlltypedPatternBlockedOnMeta TCM a
m (TCErr, Blocker) -> TCM a
handle = do

  -- Andreas, 2016-07-13, issue 2028.
  -- Save the state to rollback the changes to the signature.
  TCState
st <- TCMT IO TCState
forall (m :: * -> *). MonadTCState m => m TCState
getTC

  TCM a
m TCM a -> (TCErr -> TCM a) -> TCM a
forall a. TCMT IO a -> (TCErr -> TCMT IO a) -> TCMT IO a
forall e (m :: * -> *) a.
MonadError e m =>
m a -> (e -> m a) -> m a
`catchError` \ TCErr
err -> do

    let reraise :: MonadError TCErr m => m a
        reraise :: forall (m :: * -> *) a. MonadError TCErr m => m a
reraise = TCErr -> m a
forall a. TCErr -> m a
forall e (m :: * -> *) a. MonadError e m => e -> m a
throwError TCErr
err

    -- Get the blocker responsible for the type error.
    -- If we do not find a blocker or the error should not be handled,
    -- we reraise the error.
    Blocker
blocker <- TCMT IO Blocker
-> (Blocker -> TCMT IO Blocker) -> Maybe Blocker -> TCMT IO Blocker
forall b a. b -> (a -> b) -> Maybe a -> b
maybe TCMT IO Blocker
forall (m :: * -> *) a. MonadError TCErr m => m a
reraise Blocker -> TCMT IO Blocker
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Maybe Blocker -> TCMT IO Blocker)
-> Maybe Blocker -> TCMT IO Blocker
forall a b. (a -> b) -> a -> b
$ case TCErr
err of
      TypeError CallStack
_ TCState
s Closure TypeError
cl -> case Closure TypeError -> TypeError
forall a. Closure a -> a
clValue Closure TypeError
cl of
        SortOfSplitVarError Maybe Blocker
b Doc
_                       -> Maybe Blocker
b
        SplitError (UnificationStuck Maybe Blocker
b QName
c Telescope
tel [Arg Term]
us [Arg Term]
vs [UnificationFailure]
_) -> Maybe Blocker
b
        SplitError (BlockedType Blocker
b Closure Type
aClosure)           -> Blocker -> Maybe Blocker
forall a. a -> Maybe a
Just Blocker
b
        CannotEliminateWithPattern Maybe Blocker
b NamedArg Pattern
p Type
a              -> Maybe Blocker
b
        -- Andrea: TODO look for blocking meta in tClosure and its Sort.
        -- SplitError (CannotCreateMissingClause _ _ _ tClosure) ->
        TypeError
_                                             -> Maybe Blocker
forall a. Maybe a
Nothing
      TCErr
_ -> Maybe Blocker
forall a. Maybe a
Nothing

    ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.postpone" Int
20 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat ([TCMT IO Doc] -> TCMT IO Doc) -> [TCMT IO Doc] -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$
      [ TCMT IO Doc
"checking definition blocked on: " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Blocker -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Blocker -> m Doc
prettyTCM Blocker
blocker ]

    -- Note that we messed up the state a bit.  We might want to unroll these state changes.
    -- However, they are mostly harmless:
    -- 1. We created a new mutual block id.
    -- 2. We added a constant without definition.
    -- In fact, they are not so harmless, see issue 2028!
    -- Thus, reset the state!
    TCState -> TCM ()
forall (m :: * -> *). MonadTCState m => TCState -> m ()
putTC TCState
st

    -- There might be metas in the blocker not known in the reset state, as they could have been
    -- created somewhere on the way to the type error.
    Blocker
blocker <- ((MetaId -> TCMT IO Blocker) -> Blocker -> TCMT IO Blocker
forall (m :: * -> *).
Monad m =>
(MetaId -> m Blocker) -> Blocker -> m Blocker
`onBlockingMetasM` Blocker
blocker) ((MetaId -> TCMT IO Blocker) -> TCMT IO Blocker)
-> (MetaId -> TCMT IO Blocker) -> TCMT IO Blocker
forall a b. (a -> b) -> a -> b
$ \ MetaId
x ->
                MetaId -> TCMT IO (Maybe (Either RemoteMetaVariable MetaVariable))
forall (m :: * -> *).
ReadTCState m =>
MetaId -> m (Maybe (Either RemoteMetaVariable MetaVariable))
lookupMeta MetaId
x TCMT IO (Maybe (Either RemoteMetaVariable MetaVariable))
-> (Maybe (Either RemoteMetaVariable MetaVariable)
    -> TCMT IO Blocker)
-> TCMT IO Blocker
forall a b. TCMT IO a -> (a -> TCMT IO b) -> TCMT IO b
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= \ case
      -- Case: we do not know the meta, so cannot unblock.
      Maybe (Either RemoteMetaVariable MetaVariable)
Nothing -> Blocker -> TCMT IO Blocker
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Blocker
neverUnblock
      -- Case: we know the meta here.
      -- Just m | InstV{} <- mvInstantiation m -> __IMPOSSIBLE__  -- It cannot be instantiated yet.
      -- Andreas, 2018-11-23: I do not understand why @InstV@ is necessarily impossible.
      -- The reasoning is probably that the state @st@ is more advanced that @s@
      -- in which @x@ was blocking, thus metas in @st@ should be more instantiated than
      -- in @s@.  But issue #3403 presents a counterexample, so let's play save and reraise.
      -- Ulf, 2020-08-13: But treat this case as not blocked and reraise on both always and never.
      -- Ulf, 2020-08-13: Previously we returned neverUnblock for frozen metas here, but this is in
      -- fact not very helpful. Yes there is no hope of solving the problem, but throwing a hard
      -- error means we rob the user of the tools needed to figure out why the meta has not been
      -- solved. Better to leave the constraint.
      Just Left{} -> Blocker -> TCMT IO Blocker
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Blocker
alwaysUnblock
      Just (Right MetaVariable
m)
        | InstV{} <- MetaVariable -> MetaInstantiation
mvInstantiation MetaVariable
m -> Blocker -> TCMT IO Blocker
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Blocker
alwaysUnblock
        | Bool
otherwise                    -> Blocker -> TCMT IO Blocker
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Blocker -> TCMT IO Blocker) -> Blocker -> TCMT IO Blocker
forall a b. (a -> b) -> a -> b
$ MetaId -> Blocker
unblockOnMeta MetaId
x

    -- If it's not blocked or we can't ever unblock reraise the error.
    if Blocker
blocker Blocker -> [Blocker] -> Bool
forall a. Eq a => a -> [a] -> Bool
forall (t :: * -> *) a. (Foldable t, Eq a) => a -> t a -> Bool
`elem` [Blocker
neverUnblock, Blocker
alwaysUnblock] then TCM a
forall (m :: * -> *) a. MonadError TCErr m => m a
reraise else (TCErr, Blocker) -> TCM a
handle (TCErr
err, Blocker
blocker)

---------------------------------------------------------------------------
-- * Records
---------------------------------------------------------------------------

-- | Picks up record field assignments from modules that export a definition
--   that has the same name as the missing field.

expandModuleAssigns
  :: [Either A.Assign A.ModuleName]  -- ^ Modules and field assignments.
  -> [C.Name]                        -- ^ Names of fields of the record type.
  -> TCM A.Assigns                   -- ^ Completed field assignments from modules.
expandModuleAssigns :: [Either (FieldAssignment' Expr) ModuleName]
-> [Name] -> TCM Assigns
expandModuleAssigns [Either (FieldAssignment' Expr) ModuleName]
mfs [Name]
xs = do
  let (Assigns
fs , [ModuleName]
ms) = [Either (FieldAssignment' Expr) ModuleName]
-> (Assigns, [ModuleName])
forall a b. [Either a b] -> ([a], [b])
partitionEithers [Either (FieldAssignment' Expr) ModuleName]
mfs

  -- The fields of the record that have not been given by field assignments @fs@
  -- are looked up in the given modules @ms@.
  [Maybe (FieldAssignment' Expr)]
fs' <- [Name]
-> (Name -> TCMT IO (Maybe (FieldAssignment' Expr)))
-> TCMT IO [Maybe (FieldAssignment' Expr)]
forall (t :: * -> *) (m :: * -> *) a b.
(Traversable t, Monad m) =>
t a -> (a -> m b) -> m (t b)
forM ([Name]
xs [Name] -> [Name] -> [Name]
forall a. Eq a => [a] -> [a] -> [a]
List.\\ (FieldAssignment' Expr -> Name) -> Assigns -> [Name]
forall a b. (a -> b) -> [a] -> [b]
map (Lens' (FieldAssignment' Expr) Name -> FieldAssignment' Expr -> Name
forall o (m :: * -> *) i. MonadReader o m => Lens' o i -> m i
view (Name -> f Name)
-> FieldAssignment' Expr -> f (FieldAssignment' Expr)
forall a (f :: * -> *).
Functor f =>
(Name -> f Name) -> FieldAssignment' a -> f (FieldAssignment' a)
Lens' (FieldAssignment' Expr) Name
nameFieldA) Assigns
fs) ((Name -> TCMT IO (Maybe (FieldAssignment' Expr)))
 -> TCMT IO [Maybe (FieldAssignment' Expr)])
-> (Name -> TCMT IO (Maybe (FieldAssignment' Expr)))
-> TCMT IO [Maybe (FieldAssignment' Expr)]
forall a b. (a -> b) -> a -> b
$ \ Name
f -> do

    -- Get the possible assignments for field f from the modules.
    [Maybe (ModuleName, FieldAssignment' Expr)]
pms <- [ModuleName]
-> (ModuleName
    -> TCMT IO (Maybe (ModuleName, FieldAssignment' Expr)))
-> TCMT IO [Maybe (ModuleName, FieldAssignment' Expr)]
forall (t :: * -> *) (m :: * -> *) a b.
(Traversable t, Monad m) =>
t a -> (a -> m b) -> m (t b)
forM [ModuleName]
ms ((ModuleName
  -> TCMT IO (Maybe (ModuleName, FieldAssignment' Expr)))
 -> TCMT IO [Maybe (ModuleName, FieldAssignment' Expr)])
-> (ModuleName
    -> TCMT IO (Maybe (ModuleName, FieldAssignment' Expr)))
-> TCMT IO [Maybe (ModuleName, FieldAssignment' Expr)]
forall a b. (a -> b) -> a -> b
$ \ ModuleName
m -> do
      Scope
modScope <- ModuleName -> ScopeM Scope
getNamedScope ModuleName
m
      let names :: ThingsInScope AbstractName
          names :: ThingsInScope AbstractName
names = Scope -> ThingsInScope AbstractName
forall a. InScope a => Scope -> ThingsInScope a
exportedNamesInScope Scope
modScope
      Maybe (ModuleName, FieldAssignment' Expr)
-> TCMT IO (Maybe (ModuleName, FieldAssignment' Expr))
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Maybe (ModuleName, FieldAssignment' Expr)
 -> TCMT IO (Maybe (ModuleName, FieldAssignment' Expr)))
-> Maybe (ModuleName, FieldAssignment' Expr)
-> TCMT IO (Maybe (ModuleName, FieldAssignment' Expr))
forall a b. (a -> b) -> a -> b
$
        case Name -> ThingsInScope AbstractName -> Maybe (List1 AbstractName)
forall k a. Ord k => k -> Map k a -> Maybe a
Map.lookup Name
f ThingsInScope AbstractName
names of
          Just (AbstractName
n :| []) -> (ModuleName, FieldAssignment' Expr)
-> Maybe (ModuleName, FieldAssignment' Expr)
forall a. a -> Maybe a
Just (ModuleName
m, Name -> Expr -> FieldAssignment' Expr
forall a. Name -> a -> FieldAssignment' a
FieldAssignment Name
f (Expr -> FieldAssignment' Expr) -> Expr -> FieldAssignment' Expr
forall a b. (a -> b) -> a -> b
$ Expr -> Expr
forall a. KillRange a => KillRangeT a
killRange (Expr -> Expr) -> Expr -> Expr
forall a b. (a -> b) -> a -> b
$ AbstractName -> Expr
forall a. NameToExpr a => a -> Expr
A.nameToExpr AbstractName
n)
          Maybe (List1 AbstractName)
_ -> Maybe (ModuleName, FieldAssignment' Expr)
forall a. Maybe a
Nothing

    -- If we have several matching assignments, that's an error.
    case [Maybe (ModuleName, FieldAssignment' Expr)]
-> [(ModuleName, FieldAssignment' Expr)]
forall a. [Maybe a] -> [a]
catMaybes [Maybe (ModuleName, FieldAssignment' Expr)]
pms of
      []        -> Maybe (FieldAssignment' Expr)
-> TCMT IO (Maybe (FieldAssignment' Expr))
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Maybe (FieldAssignment' Expr)
forall a. Maybe a
Nothing
      [(ModuleName
_, FieldAssignment' Expr
fa)] -> Maybe (FieldAssignment' Expr)
-> TCMT IO (Maybe (FieldAssignment' Expr))
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (FieldAssignment' Expr -> Maybe (FieldAssignment' Expr)
forall a. a -> Maybe a
Just FieldAssignment' Expr
fa)
      [(ModuleName, FieldAssignment' Expr)]
mfas      -> TypeError -> TCMT IO (Maybe (FieldAssignment' Expr))
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
TypeError -> m a
typeError (TypeError -> TCMT IO (Maybe (FieldAssignment' Expr)))
-> (Doc -> TypeError)
-> Doc
-> TCMT IO (Maybe (FieldAssignment' Expr))
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Doc -> TypeError
GenericDocError (Doc -> TCMT IO (Maybe (FieldAssignment' Expr)))
-> TCMT IO Doc -> TCMT IO (Maybe (FieldAssignment' Expr))
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< do
        [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat ([TCMT IO Doc] -> TCMT IO Doc) -> [TCMT IO Doc] -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$
          TCMT IO Doc
"Ambiguity: the field" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Name -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Name -> m Doc
prettyTCM Name
f
            TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> TCMT IO Doc
"appears in the following modules: " TCMT IO Doc -> [TCMT IO Doc] -> [TCMT IO Doc]
forall a. a -> [a] -> [a]
: ((ModuleName, FieldAssignment' Expr) -> TCMT IO Doc)
-> [(ModuleName, FieldAssignment' Expr)] -> [TCMT IO Doc]
forall a b. (a -> b) -> [a] -> [b]
map (ModuleName -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => ModuleName -> m Doc
prettyTCM (ModuleName -> TCMT IO Doc)
-> ((ModuleName, FieldAssignment' Expr) -> ModuleName)
-> (ModuleName, FieldAssignment' Expr)
-> TCMT IO Doc
forall b c a. (b -> c) -> (a -> b) -> a -> c
. (ModuleName, FieldAssignment' Expr) -> ModuleName
forall a b. (a, b) -> a
fst) [(ModuleName, FieldAssignment' Expr)]
mfas
  Assigns -> TCM Assigns
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Assigns
fs Assigns -> Assigns -> Assigns
forall a. [a] -> [a] -> [a]
++ [Maybe (FieldAssignment' Expr)] -> Assigns
forall a. [Maybe a] -> [a]
catMaybes [Maybe (FieldAssignment' Expr)]
fs')

-- | @checkRecordExpression fs e t@ checks record construction against type @t@.
-- Precondition @e = Rec _ fs@.
checkRecordExpression
  :: Comparison       -- ^ How do we related the inferred type of the record expression
                      --   to the expected type?  Subtype or equal type?
  -> A.RecordAssigns  -- ^ @mfs@: modules and field assignments.
  -> A.Expr           -- ^ Must be @A.Rec _ mfs@.
  -> Type             -- ^ Expected type of record expression.
  -> TCM Term         -- ^ Record value in internal syntax.
checkRecordExpression :: Comparison
-> [Either (FieldAssignment' Expr) ModuleName]
-> Expr
-> Type
-> TCM Term
checkRecordExpression Comparison
cmp [Either (FieldAssignment' Expr) ModuleName]
mfs Expr
e Type
t = do
  ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.rec" Int
10 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
sep
    [ TCMT IO Doc
"checking record expression"
    , Expr -> TCMT IO Doc
forall a (m :: * -> *).
(ToConcrete a, Pretty (ConOfAbs a), MonadAbsToCon m) =>
a -> m Doc
prettyA Expr
e
    ]
  Type
-> (Blocker -> Type -> TCM Term)
-> (NotBlocked -> Type -> TCM Term)
-> TCM Term
forall t (m :: * -> *) a.
(Reduce t, IsMeta t, MonadReduce m) =>
t -> (Blocker -> t -> m a) -> (NotBlocked -> t -> m a) -> m a
ifBlocked Type
t (\ Blocker
_ Type
t -> Type -> TCM Term
guessRecordType Type
t) {-else-} ((NotBlocked -> Type -> TCM Term) -> TCM Term)
-> (NotBlocked -> Type -> TCM Term) -> TCM Term
forall a b. (a -> b) -> a -> b
$ \ NotBlocked
_ Type
t -> do
  case Type -> Term
forall t a. Type'' t a -> a
unEl Type
t of
    -- Case: We know the type of the record already.
    Def QName
r Elims
es  -> do
      let ~(Just [Arg Term]
vs) = Elims -> Maybe [Arg Term]
forall a. [Elim' a] -> Maybe [Arg a]
allApplyElims Elims
es
      ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.rec" Int
20 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (ArgName -> TCMT IO Doc) -> ArgName -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ ArgName
"  r   = " ArgName -> ArgName -> ArgName
forall a. [a] -> [a] -> [a]
++ QName -> ArgName
forall a. Pretty a => a -> ArgName
prettyShow QName
r

      ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.rec" Int
30 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ TCMT IO Doc
"  xs  = " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall a. Semigroup a => a -> a -> a
<> do
        ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (ArgName -> TCMT IO Doc) -> TCMT IO ArgName -> TCMT IO Doc
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< [Name] -> ArgName
forall a. Pretty a => a -> ArgName
prettyShow ([Name] -> ArgName)
-> ([Dom' Term Name] -> [Name]) -> [Dom' Term Name] -> ArgName
forall b c a. (b -> c) -> (a -> b) -> a -> c
. (Dom' Term Name -> Name) -> [Dom' Term Name] -> [Name]
forall a b. (a -> b) -> [a] -> [b]
map Dom' Term Name -> Name
forall t e. Dom' t e -> e
unDom ([Dom' Term Name] -> ArgName)
-> TCMT IO [Dom' Term Name] -> TCMT IO ArgName
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> QName -> TCMT IO [Dom' Term Name]
forall (m :: * -> *).
(HasConstInfo m, ReadTCState m, MonadError TCErr m) =>
QName -> m [Dom' Term Name]
getRecordFieldNames QName
r
      ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.rec" Int
30 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ TCMT IO Doc
"  ftel= " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall a. Semigroup a => a -> a -> a
<> do
        Telescope -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Telescope -> m Doc
prettyTCM (Telescope -> TCMT IO Doc) -> TCMT IO Telescope -> TCMT IO Doc
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< QName -> TCMT IO Telescope
getRecordFieldTypes QName
r
      ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.rec" Int
30 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ TCMT IO Doc
"  con = " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall a. Semigroup a => a -> a -> a
<> do
        ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (ArgName -> TCMT IO Doc) -> TCMT IO ArgName -> TCMT IO Doc
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< ConHead -> ArgName
forall a. Pretty a => a -> ArgName
prettyShow (ConHead -> ArgName) -> TCMT IO ConHead -> TCMT IO ArgName
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> QName -> TCMT IO ConHead
forall (m :: * -> *).
(HasConstInfo m, ReadTCState m, MonadError TCErr m) =>
QName -> m ConHead
getRecordConstructor QName
r

      Defn
def <- QName -> TCMT IO Defn
forall (m :: * -> *).
(HasConstInfo m, ReadTCState m, MonadError TCErr m) =>
QName -> m Defn
getRecordDef QName
r
      let -- Field names (C.Name) with ArgInfo from record type definition.
          cxs :: [Arg Name]
cxs  = (Dom' Term Name -> Arg Name) -> [Dom' Term Name] -> [Arg Name]
forall a b. (a -> b) -> [a] -> [b]
map Dom' Term Name -> Arg Name
forall t a. Dom' t a -> Arg a
argFromDom ([Dom' Term Name] -> [Arg Name]) -> [Dom' Term Name] -> [Arg Name]
forall a b. (a -> b) -> a -> b
$ Defn -> [Dom' Term Name]
recordFieldNames Defn
def
          -- Just field names.
          xs :: [Name]
xs   = (Arg Name -> Name) -> [Arg Name] -> [Name]
forall a b. (a -> b) -> [a] -> [b]
map Arg Name -> Name
forall e. Arg e -> e
unArg [Arg Name]
cxs
          -- Record constructor.
          con :: ConHead
con  = KillRangeT ConHead
forall a. KillRange a => KillRangeT a
killRange KillRangeT ConHead -> KillRangeT ConHead
forall a b. (a -> b) -> a -> b
$ Defn -> ConHead
recConHead Defn
def
      ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.rec" Int
20 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
        [ TCMT IO Doc
"  xs  = " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall a. Semigroup a => a -> a -> a
<> Doc -> TCMT IO Doc
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return ([Name] -> Doc
forall a. Pretty a => a -> Doc
P.pretty [Name]
xs)
        , TCMT IO Doc
"  ftel= " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall a. Semigroup a => a -> a -> a
<> Telescope -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Telescope -> m Doc
prettyTCM (Defn -> Telescope
recTel Defn
def)
        , TCMT IO Doc
"  con = " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall a. Semigroup a => a -> a -> a
<> Doc -> TCMT IO Doc
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (ConHead -> Doc
forall a. Pretty a => a -> Doc
P.pretty ConHead
con)
        ]

      -- Record expressions corresponding to erased record
      -- constructors can only be used in compile-time mode.
      Quantity
constructorQ <- Definition -> Quantity
forall a. LensQuantity a => a -> Quantity
getQuantity (Definition -> Quantity) -> TCMT IO Definition -> TCMT IO Quantity
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> QName -> TCMT IO Definition
forall (m :: * -> *). HasConstInfo m => QName -> m Definition
getConstInfo (ConHead -> QName
conName ConHead
con)
      Quantity
currentQ     <- Lens' TCEnv Quantity -> TCMT IO Quantity
forall (m :: * -> *) a. MonadTCEnv m => Lens' TCEnv a -> m a
viewTC (Quantity -> f Quantity) -> TCEnv -> f TCEnv
Lens' TCEnv Quantity
eQuantity
      Bool -> TCM () -> TCM ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
unless (Quantity
constructorQ Quantity -> Quantity -> Bool
`moreQuantity` Quantity
currentQ) (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$
        TypeError -> TCM ()
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
TypeError -> m a
typeError (TypeError -> TCM ()) -> TypeError -> TCM ()
forall a b. (a -> b) -> a -> b
$ ArgName -> TypeError
GenericError (ArgName -> TypeError) -> ArgName -> TypeError
forall a b. (a -> b) -> a -> b
$
        ArgName
"A record expression corresponding to an erased record " ArgName -> ArgName -> ArgName
forall a. [a] -> [a] -> [a]
++
        ArgName
"constructor must only be used in erased settings"

      -- Andreas, 2018-09-06, issue #3122.
      -- Associate the concrete record field names used in the record expression
      -- to their counterpart in the record type definition.
      [Name] -> [QName] -> TCM ()
disambiguateRecordFields ((FieldAssignment' Expr -> Name) -> Assigns -> [Name]
forall a b. (a -> b) -> [a] -> [b]
map FieldAssignment' Expr -> Name
forall a. FieldAssignment' a -> Name
_nameFieldA (Assigns -> [Name]) -> Assigns -> [Name]
forall a b. (a -> b) -> a -> b
$ [Either (FieldAssignment' Expr) ModuleName] -> Assigns
forall a b. [Either a b] -> [a]
lefts [Either (FieldAssignment' Expr) ModuleName]
mfs) ((Dom QName -> QName) -> [Dom QName] -> [QName]
forall a b. (a -> b) -> [a] -> [b]
map Dom QName -> QName
forall t e. Dom' t e -> e
unDom ([Dom QName] -> [QName]) -> [Dom QName] -> [QName]
forall a b. (a -> b) -> a -> b
$ Defn -> [Dom QName]
recFields Defn
def)

      -- Compute the list of given fields, decorated with the ArgInfo from the record def.
      -- Andreas, 2019-03-18, issue #3122, also pick up non-visible fields from the modules.
      Assigns
fs <- [Either (FieldAssignment' Expr) ModuleName]
-> [Name] -> TCM Assigns
expandModuleAssigns [Either (FieldAssignment' Expr) ModuleName]
mfs ((Arg Name -> Name) -> [Arg Name] -> [Name]
forall a b. (a -> b) -> [a] -> [b]
map Arg Name -> Name
forall e. Arg e -> e
unArg [Arg Name]
cxs)

      -- Compute a list of metas for the missing visible fields.
      ScopeInfo
scope <- TCMT IO ScopeInfo
forall (m :: * -> *). ReadTCState m => m ScopeInfo
getScope
      let re :: Range
re = Expr -> Range
forall a. HasRange a => a -> Range
getRange Expr
e
          meta :: Name -> Expr
meta Name
x = MetaInfo -> Expr
A.Underscore (MetaInfo -> Expr) -> MetaInfo -> Expr
forall a b. (a -> b) -> a -> b
$ Range -> ScopeInfo -> Maybe MetaId -> ArgName -> MetaInfo
A.MetaInfo Range
re ScopeInfo
scope Maybe MetaId
forall a. Maybe a
Nothing (Name -> ArgName
forall a. Pretty a => a -> ArgName
prettyShow Name
x)
      -- In @es@ omitted explicit fields are replaced by underscores.
      -- Omitted implicit or instance fields
      -- are still left out and inserted later by checkArguments_.
      [NamedArg Expr]
es <- QName
-> (Name -> Expr) -> Assigns -> [Arg Name] -> TCM [NamedArg Expr]
forall a.
HasRange a =>
QName
-> (Name -> a)
-> [FieldAssignment' a]
-> [Arg Name]
-> TCM [NamedArg a]
insertMissingFieldsWarn QName
r Name -> Expr
meta Assigns
fs [Arg Name]
cxs

      [Arg Term]
args <- Comparison
-> ExpandHidden
-> Range
-> [NamedArg Expr]
-> Telescope
-> TCM (Elims, Telescope)
checkArguments_ Comparison
cmp ExpandHidden
ExpandLast Range
re [NamedArg Expr]
es (Defn -> Telescope
recTel Defn
def Telescope -> [Arg Term] -> Telescope
forall t. Apply t => t -> [Arg Term] -> t
`apply` [Arg Term]
vs) TCM (Elims, Telescope)
-> ((Elims, Telescope) -> TCMT IO [Arg Term]) -> TCMT IO [Arg Term]
forall a b. TCMT IO a -> (a -> TCMT IO b) -> TCMT IO b
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= \case
        (Elims
elims, Telescope
remainingTel) | Telescope -> Bool
forall a. Null a => a -> Bool
null Telescope
remainingTel
                              , Just [Arg Term]
args <- Elims -> Maybe [Arg Term]
forall a. [Elim' a] -> Maybe [Arg a]
allApplyElims Elims
elims -> [Arg Term] -> TCMT IO [Arg Term]
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return [Arg Term]
args
        (Elims, Telescope)
_ -> TCMT IO [Arg Term]
forall a. HasCallStack => a
__IMPOSSIBLE__
      -- Don't need to block here!
      ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.rec" Int
20 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (ArgName -> TCMT IO Doc) -> ArgName -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ ArgName
"finished record expression"
      Term -> TCM Term
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Term -> TCM Term) -> Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ ConHead -> ConInfo -> Elims -> Term
Con ConHead
con ConInfo
ConORec ((Arg Term -> Elim) -> [Arg Term] -> Elims
forall a b. (a -> b) -> [a] -> [b]
map Arg Term -> Elim
forall a. Arg a -> Elim' a
Apply [Arg Term]
args)
    Term
_ -> TypeError -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
TypeError -> m a
typeError (TypeError -> TCM Term) -> TypeError -> TCM Term
forall a b. (a -> b) -> a -> b
$ Type -> TypeError
ShouldBeRecordType Type
t

  where
    -- Case: We don't know the type of the record.
    guessRecordType :: Type -> TCM Term
guessRecordType Type
t = do
      let fields :: [Name]
fields = [ Name
x | Left (FieldAssignment Name
x Expr
_) <- [Either (FieldAssignment' Expr) ModuleName]
mfs ]
      [QName]
rs <- [Name] -> TCM [QName]
findPossibleRecords [Name]
fields
      ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.rec" Int
30 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ TCMT IO Doc
"Possible records for" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Type -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Type -> m Doc
prettyTCM Type
t TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> TCMT IO Doc
"are" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<?> [QName] -> TCMT IO Doc
forall (m :: * -> *) a. (Applicative m, Pretty a) => a -> m Doc
pretty [QName]
rs
      case [QName]
rs of
          -- If there are no records with the right fields we might as well fail right away.
        [] -> case [Name]
fields of
          []  -> ArgName -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
ArgName -> m a
genericError ArgName
"There are no records in scope"
          [Name
f] -> ArgName -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
ArgName -> m a
genericError (ArgName -> TCM Term) -> ArgName -> TCM Term
forall a b. (a -> b) -> a -> b
$ ArgName
"There is no known record with the field " ArgName -> ArgName -> ArgName
forall a. [a] -> [a] -> [a]
++ Name -> ArgName
forall a. Pretty a => a -> ArgName
prettyShow Name
f
          [Name]
_   -> ArgName -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
ArgName -> m a
genericError (ArgName -> TCM Term) -> ArgName -> TCM Term
forall a b. (a -> b) -> a -> b
$ ArgName
"There is no known record with the fields " ArgName -> ArgName -> ArgName
forall a. [a] -> [a] -> [a]
++ [ArgName] -> ArgName
unwords ((Name -> ArgName) -> [Name] -> [ArgName]
forall a b. (a -> b) -> [a] -> [b]
map Name -> ArgName
forall a. Pretty a => a -> ArgName
prettyShow [Name]
fields)
          -- If there's only one record with the appropriate fields, go with that.
        [QName
r] -> do
          -- #5198: Don't generate metas for parameters of the current module. In most cases they
          -- get solved, but not always.
          Definition
def <- Definition -> TCMT IO Definition
forall (m :: * -> *).
(Functor m, HasConstInfo m, HasOptions m, ReadTCState m,
 MonadTCEnv m, MonadDebug m) =>
Definition -> m Definition
instantiateDef (Definition -> TCMT IO Definition)
-> TCMT IO Definition -> TCMT IO Definition
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< QName -> TCMT IO Definition
forall (m :: * -> *). HasConstInfo m => QName -> m Definition
getConstInfo QName
r
          [Arg Term]
ps  <- QName -> TCMT IO [Arg Term]
forall (m :: * -> *).
(Functor m, HasConstInfo m, HasOptions m, ReadTCState m,
 MonadTCEnv m, MonadDebug m) =>
QName -> m [Arg Term]
freeVarsToApply QName
r
          let rt :: Type
rt = Definition -> Type
defType Definition
def
          ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.rec" Int
30 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ TCMT IO Doc
"Type of unique record" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Type -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Type -> m Doc
prettyTCM Type
rt
          [Arg Term]
vs  <- Type -> TCMT IO [Arg Term]
forall (m :: * -> *). MonadMetaSolver m => Type -> m [Arg Term]
newArgsMeta Type
rt
          Type
target <- Type -> TCM Type
forall a (m :: * -> *). (Reduce a, MonadReduce m) => a -> m a
reduce (Type -> TCM Type) -> Type -> TCM Type
forall a b. (a -> b) -> a -> b
$ Type -> [Arg Term] -> Type
piApply Type
rt [Arg Term]
vs
          Sort' Term
s  <- case Type -> Term
forall t a. Type'' t a -> a
unEl Type
target of
                  Sort Sort' Term
s  -> Sort' Term -> TCMT IO (Sort' Term)
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Sort' Term
s
                  Term
v       -> do
                    ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"impossible" Int
10 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
                      [ TCMT IO Doc
"The impossible happened when checking record expression against meta"
                      , TCMT IO Doc
"Candidate record type r = " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> QName -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => QName -> m Doc
prettyTCM QName
r
                      , TCMT IO Doc
"Type of r               = " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Type -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Type -> m Doc
prettyTCM Type
rt
                      , TCMT IO Doc
"Ends in (should be sort)= " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Term -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Term -> m Doc
prettyTCM Term
v
                      , ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (ArgName -> TCMT IO Doc) -> ArgName -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ ArgName
"  Raw                   =  " ArgName -> ArgName -> ArgName
forall a. [a] -> [a] -> [a]
++ Term -> ArgName
forall a. Show a => a -> ArgName
show Term
v
                      ]
                    TCMT IO (Sort' Term)
forall a. HasCallStack => a
__IMPOSSIBLE__
          let inferred :: Type
inferred = Sort' Term -> Term -> Type
forall t a. Sort' t -> a -> Type'' t a
El Sort' Term
s (Term -> Type) -> Term -> Type
forall a b. (a -> b) -> a -> b
$ QName -> Elims -> Term
Def QName
r (Elims -> Term) -> Elims -> Term
forall a b. (a -> b) -> a -> b
$ (Arg Term -> Elim) -> [Arg Term] -> Elims
forall a b. (a -> b) -> [a] -> [b]
map Arg Term -> Elim
forall a. Arg a -> Elim' a
Apply ([Arg Term]
ps [Arg Term] -> [Arg Term] -> [Arg Term]
forall a. [a] -> [a] -> [a]
++ [Arg Term]
vs)
          Term
v <- Expr -> Type -> TCM Term
checkExpr Expr
e Type
inferred
          Comparison -> Term -> Type -> Type -> TCM Term
forall (m :: * -> *).
(MonadConversion m, MonadTCM m) =>
Comparison -> Term -> Type -> Type -> m Term
coerce Comparison
cmp Term
v Type
inferred Type
t
          -- Andreas 2012-04-21: OLD CODE, WRONG DIRECTION, I GUESS:
          -- blockTerm t $ v <$ leqType_ t inferred

          -- If there are more than one possible record we postpone
        QName
_:QName
_:[QName]
_ -> do
          ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.expr.rec" Int
10 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
sep
            [ TCMT IO Doc
"Postponing type checking of"
            , Int -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Functor m => Int -> m Doc -> m Doc
nest Int
2 (TCMT IO Doc -> TCMT IO Doc) -> TCMT IO Doc -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ Expr -> TCMT IO Doc
forall a (m :: * -> *).
(ToConcrete a, Pretty (ConOfAbs a), MonadAbsToCon m) =>
a -> m Doc
prettyA Expr
e TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> TCMT IO Doc
":" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Type -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Type -> m Doc
prettyTCM Type
t
            ]
          TypeCheckingProblem -> TCM Term
postponeTypeCheckingProblem_ (TypeCheckingProblem -> TCM Term)
-> TypeCheckingProblem -> TCM Term
forall a b. (a -> b) -> a -> b
$ Comparison -> Expr -> Type -> TypeCheckingProblem
CheckExpr Comparison
cmp Expr
e Type
t

-- | @checkRecordUpdate cmp ei recexpr fs e t@
--
-- Preconditions: @e = RecUpdate ei recexpr fs@ and @t@ is reduced.
--
checkRecordUpdate
  :: Comparison   -- ^ @cmp@
  -> A.ExprInfo   -- ^ @ei@
  -> A.Expr       -- ^ @recexpr@
  -> A.Assigns    -- ^ @fs@
  -> A.Expr       -- ^ @e = RecUpdate ei recexpr fs@
  -> Type         -- ^ Need not be reduced.
  -> TCM Term
checkRecordUpdate :: Comparison
-> ExprInfo -> Expr -> Assigns -> Expr -> Type -> TCM Term
checkRecordUpdate Comparison
cmp ExprInfo
ei Expr
recexpr Assigns
fs Expr
eupd Type
t = do
  Type
-> (Blocker -> Type -> TCM Term)
-> (NotBlocked -> Type -> TCM Term)
-> TCM Term
forall t (m :: * -> *) a.
(Reduce t, IsMeta t, MonadReduce m) =>
t -> (Blocker -> t -> m a) -> (NotBlocked -> t -> m a) -> m a
ifBlocked Type
t (\ Blocker
_ Type
_ -> TCM Term
tryInfer) ((NotBlocked -> Type -> TCM Term) -> TCM Term)
-> (NotBlocked -> Type -> TCM Term) -> TCM Term
forall a b. (a -> b) -> a -> b
$ {-else-} \ NotBlocked
_ Type
t' -> do
    TCMT IO (Maybe (QName, [Arg Term], Defn))
-> TCM Term -> ((QName, [Arg Term], Defn) -> TCM Term) -> TCM Term
forall (m :: * -> *) a b.
Monad m =>
m (Maybe a) -> m b -> (a -> m b) -> m b
caseMaybeM (Type -> TCMT IO (Maybe (QName, [Arg Term], Defn))
forall (m :: * -> *).
PureTCM m =>
Type -> m (Maybe (QName, [Arg Term], Defn))
isRecordType Type
t') TCM Term
should (((QName, [Arg Term], Defn) -> TCM Term) -> TCM Term)
-> ((QName, [Arg Term], Defn) -> TCM Term) -> TCM Term
forall a b. (a -> b) -> a -> b
$ \ (QName
r, [Arg Term]
_pars, Defn
defn) -> do
      -- Bind the record value (before update) to a fresh @name@.
      Term
v <- Comparison -> Expr -> Type -> TCM Term
checkExpr' Comparison
cmp Expr
recexpr Type
t'
      Name
name <- Range -> TCMT IO Name
forall (m :: * -> *). MonadFresh NameId m => Range -> m Name
freshNoName (Range -> TCMT IO Name) -> Range -> TCMT IO Name
forall a b. (a -> b) -> a -> b
$ Expr -> Range
forall a. HasRange a => a -> Range
getRange Expr
recexpr
      ArgInfo -> Origin -> Name -> Term -> Type -> TCM Term -> TCM Term
forall (m :: * -> *) a.
MonadAddContext m =>
ArgInfo -> Origin -> Name -> Term -> Type -> m a -> m a
addLetBinding ArgInfo
defaultArgInfo Origin
Inserted Name
name Term
v Type
t' (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ do

        let projs :: [Arg QName]
projs = (Dom QName -> Arg QName) -> [Dom QName] -> [Arg QName]
forall a b. (a -> b) -> [a] -> [b]
map Dom QName -> Arg QName
forall t a. Dom' t a -> Arg a
argFromDom ([Dom QName] -> [Arg QName]) -> [Dom QName] -> [Arg QName]
forall a b. (a -> b) -> a -> b
$ Defn -> [Dom QName]
recFields Defn
defn

        -- Andreas, 2018-09-06, issue #3122.
        -- Associate the concrete record field names used in the record expression
        -- to their counterpart in the record type definition.
        [Name] -> [QName] -> TCM ()
disambiguateRecordFields ((FieldAssignment' Expr -> Name) -> Assigns -> [Name]
forall a b. (a -> b) -> [a] -> [b]
map FieldAssignment' Expr -> Name
forall a. FieldAssignment' a -> Name
_nameFieldA Assigns
fs) ((Arg QName -> QName) -> [Arg QName] -> [QName]
forall a b. (a -> b) -> [a] -> [b]
map Arg QName -> QName
forall e. Arg e -> e
unArg [Arg QName]
projs)

        -- Desugar record update expression into record expression.
        let fs' :: [(Name, Maybe Expr)]
fs' = (FieldAssignment' Expr -> (Name, Maybe Expr))
-> Assigns -> [(Name, Maybe Expr)]
forall a b. (a -> b) -> [a] -> [b]
map (\ (FieldAssignment Name
x Expr
e) -> (Name
x, Expr -> Maybe Expr
forall a. a -> Maybe a
Just Expr
e)) Assigns
fs
        [Arg Name]
axs <- (Dom' Term Name -> Arg Name) -> [Dom' Term Name] -> [Arg Name]
forall a b. (a -> b) -> [a] -> [b]
map Dom' Term Name -> Arg Name
forall t a. Dom' t a -> Arg a
argFromDom ([Dom' Term Name] -> [Arg Name])
-> TCMT IO [Dom' Term Name] -> TCMT IO [Arg Name]
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> QName -> TCMT IO [Dom' Term Name]
forall (m :: * -> *).
(HasConstInfo m, ReadTCState m, MonadError TCErr m) =>
QName -> m [Dom' Term Name]
getRecordFieldNames QName
r
        [Maybe Expr]
es  <- QName
-> (Arg Name -> Maybe Expr)
-> [Arg Name]
-> [(Name, Maybe Expr)]
-> TCM [Maybe Expr]
forall a.
HasRange a =>
QName -> (Arg Name -> a) -> [Arg Name] -> [(Name, a)] -> TCM [a]
orderFieldsWarn QName
r (Maybe Expr -> Arg Name -> Maybe Expr
forall a b. a -> b -> a
const Maybe Expr
forall a. Maybe a
Nothing) [Arg Name]
axs [(Name, Maybe Expr)]
fs'
        let es' :: [Maybe Expr]
es'  = (Arg QName -> Maybe Expr -> Maybe Expr)
-> [Arg QName] -> [Maybe Expr] -> [Maybe Expr]
forall a b c. (a -> b -> c) -> [a] -> [b] -> [c]
zipWith (Name -> ExprInfo -> Arg QName -> Maybe Expr -> Maybe Expr
replaceFields Name
name ExprInfo
ei) [Arg QName]
projs [Maybe Expr]
es
        let erec :: Expr
erec = ExprInfo -> [Either (FieldAssignment' Expr) ModuleName] -> Expr
A.Rec ExprInfo
ei [ FieldAssignment' Expr -> Either (FieldAssignment' Expr) ModuleName
forall a b. a -> Either a b
Left (Name -> Expr -> FieldAssignment' Expr
forall a. Name -> a -> FieldAssignment' a
FieldAssignment Name
x Expr
e) | (Arg ArgInfo
_ Name
x, Just Expr
e) <- [Arg Name] -> [Maybe Expr] -> [(Arg Name, Maybe Expr)]
forall a b. [a] -> [b] -> [(a, b)]
zip [Arg Name]
axs [Maybe Expr]
es' ]
        -- Call the type checker on the desugared syntax.
        Comparison -> Expr -> Type -> TCM Term
checkExpr' Comparison
cmp Expr
erec Type
t
  where
    replaceFields :: Name -> A.ExprInfo -> Arg A.QName -> Maybe A.Expr -> Maybe A.Expr
    replaceFields :: Name -> ExprInfo -> Arg QName -> Maybe Expr -> Maybe Expr
replaceFields Name
name ExprInfo
ei (Arg ArgInfo
ai QName
p) Maybe Expr
Nothing | ArgInfo -> Bool
forall a. LensHiding a => a -> Bool
visible ArgInfo
ai = Expr -> Maybe Expr
forall a. a -> Maybe a
Just (Expr -> Maybe Expr) -> Expr -> Maybe Expr
forall a b. (a -> b) -> a -> b
$
      -- omitted visible fields remain unchanged: @{ ...; p = p name; ...}@
      -- (hidden fields are supposed to be inferred)
      AppInfo -> Expr -> NamedArg Expr -> Expr
A.App
        (Range -> AppInfo
A.defaultAppInfo (Range -> AppInfo) -> Range -> AppInfo
forall a b. (a -> b) -> a -> b
$ ExprInfo -> Range
forall a. HasRange a => a -> Range
getRange ExprInfo
ei)
        (ProjOrigin -> AmbiguousQName -> Expr
A.Proj ProjOrigin
ProjSystem (AmbiguousQName -> Expr) -> AmbiguousQName -> Expr
forall a b. (a -> b) -> a -> b
$ QName -> AmbiguousQName
unambiguous QName
p)
        (Expr -> NamedArg Expr
forall a. a -> NamedArg a
defaultNamedArg (Expr -> NamedArg Expr) -> Expr -> NamedArg Expr
forall a b. (a -> b) -> a -> b
$ Name -> Expr
A.Var Name
name)
    replaceFields Name
_ ExprInfo
_ Arg QName
_ Maybe Expr
me = Maybe Expr
me  -- other fields get the user-written updates

    tryInfer :: TCM Term
tryInfer = do
      (Term
_, Type
trec) <- Expr -> TCM (Term, Type)
inferExpr Expr
recexpr
      Type
-> (Blocker -> Type -> TCM Term)
-> (NotBlocked -> Type -> TCM Term)
-> TCM Term
forall t (m :: * -> *) a.
(Reduce t, IsMeta t, MonadReduce m) =>
t -> (Blocker -> t -> m a) -> (NotBlocked -> t -> m a) -> m a
ifBlocked Type
trec (\ Blocker
_ Type
_ -> TCM Term
postpone) ((NotBlocked -> Type -> TCM Term) -> TCM Term)
-> (NotBlocked -> Type -> TCM Term) -> TCM Term
forall a b. (a -> b) -> a -> b
$ {-else-} \ NotBlocked
_ Type
_ -> do
        Term
v <- Comparison -> Expr -> Type -> TCM Term
checkExpr' Comparison
cmp Expr
eupd Type
trec
        Comparison -> Term -> Type -> Type -> TCM Term
forall (m :: * -> *).
(MonadConversion m, MonadTCM m) =>
Comparison -> Term -> Type -> Type -> m Term
coerce Comparison
cmp Term
v Type
trec Type
t

    postpone :: TCM Term
postpone = TypeCheckingProblem -> TCM Term
postponeTypeCheckingProblem_ (TypeCheckingProblem -> TCM Term)
-> TypeCheckingProblem -> TCM Term
forall a b. (a -> b) -> a -> b
$ Comparison -> Expr -> Type -> TypeCheckingProblem
CheckExpr Comparison
cmp Expr
eupd Type
t
    should :: TCM Term
should   = TypeError -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
TypeError -> m a
typeError (TypeError -> TCM Term) -> TypeError -> TCM Term
forall a b. (a -> b) -> a -> b
$ Type -> TypeError
ShouldBeRecordType Type
t

---------------------------------------------------------------------------
-- * Literal
---------------------------------------------------------------------------

checkLiteral :: Literal -> Type -> TCM Term
checkLiteral :: Literal -> Type -> TCM Term
checkLiteral Literal
lit Type
t = do
  Type
t' <- Literal -> TCM Type
forall (m :: * -> *).
(HasBuiltins m, MonadError TCErr m, MonadTCEnv m, ReadTCState m) =>
Literal -> m Type
litType Literal
lit
  Comparison -> Term -> Type -> Type -> TCM Term
forall (m :: * -> *).
(MonadConversion m, MonadTCM m) =>
Comparison -> Term -> Type -> Type -> m Term
coerce Comparison
CmpEq (Literal -> Term
Lit Literal
lit) Type
t' Type
t

---------------------------------------------------------------------------
-- * Terms
---------------------------------------------------------------------------

-- | Remove top layers of scope info of expression and set the scope accordingly
--   in the 'TCState'.

scopedExpr :: A.Expr -> TCM A.Expr
scopedExpr :: Expr -> TCM Expr
scopedExpr (A.ScopedExpr ScopeInfo
scope Expr
e) = ScopeInfo -> TCM ()
setScope ScopeInfo
scope TCM () -> TCM Expr -> TCM Expr
forall a b. TCMT IO a -> TCMT IO b -> TCMT IO b
forall (m :: * -> *) a b. Monad m => m a -> m b -> m b
>> Expr -> TCM Expr
scopedExpr Expr
e
scopedExpr Expr
e                      = Expr -> TCM Expr
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Expr
e

-- | Type check an expression.
checkExpr :: A.Expr -> Type -> TCM Term
checkExpr :: Expr -> Type -> TCM Term
checkExpr = Comparison -> Expr -> Type -> TCM Term
checkExpr' Comparison
CmpLeq

-- Andreas, 2019-10-13, issue #4125:
-- For the sake of readable types in interactive program construction,
-- avoid unnecessary unfoldings via 'reduce' in the type checker!
checkExpr'
  :: Comparison
  -> A.Expr
  -> Type        -- ^ Unreduced!
  -> TCM Term
checkExpr' :: Comparison -> Expr -> Type -> TCM Term
checkExpr' Comparison
cmp Expr
e Type
t =
  ArgName -> Int -> ArgName -> TCM Term -> TCM Term
forall a. ArgName -> Int -> ArgName -> TCMT IO a -> TCMT IO a
forall (m :: * -> *) a.
MonadDebug m =>
ArgName -> Int -> ArgName -> m a -> m a
verboseBracket ArgName
"tc.term.expr.top" Int
5 ArgName
"checkExpr" (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$
  ArgName -> Int -> (Term -> TCMT IO Doc) -> TCM Term -> TCM Term
forall (m :: * -> *) a.
MonadDebug m =>
ArgName -> Int -> (a -> TCMT IO Doc) -> m a -> m a
reportResult ArgName
"tc.term.expr.top" Int
15 (\ Term
v -> [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
                                              [ TCMT IO Doc
"checkExpr" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<?> [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
fsep [ Expr -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Expr -> m Doc
prettyTCM Expr
e, TCMT IO Doc
":", Type -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Type -> m Doc
prettyTCM Type
t ]
                                              , TCMT IO Doc
"  returns" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<?> Term -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Term -> m Doc
prettyTCM Term
v ]) (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$
  Call -> TCM Term -> TCM Term
forall a. Call -> TCMT IO a -> TCMT IO a
forall (m :: * -> *) a. MonadTrace m => Call -> m a -> m a
traceCall (Comparison -> Expr -> Type -> Call
CheckExprCall Comparison
cmp Expr
e Type
t) (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ TCM Term -> TCM Term
forall a. TCM a -> TCM a
localScope (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ TCM Term -> TCM Term
forall a. TCM a -> TCM a
doExpandLast (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ Term -> TCM Term
forall (m :: * -> *). PureTCM m => Term -> m Term
unfoldInlined (Term -> TCM Term) -> TCM Term -> TCM Term
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< do
    ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.expr.top" Int
15 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$
        TCMT IO Doc
"Checking" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
sep
          [ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
fsep [ Expr -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Expr -> m Doc
prettyTCM Expr
e, TCMT IO Doc
":", Type -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Type -> m Doc
prettyTCM Type
t ]
          , Int -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Functor m => Int -> m Doc -> m Doc
nest Int
2 (TCMT IO Doc -> TCMT IO Doc) -> TCMT IO Doc -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ TCMT IO Doc
"at " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> (ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (ArgName -> TCMT IO Doc)
-> (Range -> ArgName) -> Range -> TCMT IO Doc
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Range -> ArgName
forall a. Pretty a => a -> ArgName
prettyShow (Range -> TCMT IO Doc) -> TCMT IO Range -> TCMT IO Doc
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< TCMT IO Range
forall (m :: * -> *). MonadTCEnv m => m Range
getCurrentRange)
          ]
    ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.expr.top.detailed" Int
80 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$
      TCMT IO Doc
"Checking" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
fsep [ Expr -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Expr -> m Doc
prettyTCM Expr
e, TCMT IO Doc
":", ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (Type -> ArgName
forall a. Show a => a -> ArgName
show Type
t) ]
    Type
tReduced <- Type -> TCM Type
forall a (m :: * -> *). (Reduce a, MonadReduce m) => a -> m a
reduce Type
t
    ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.expr.top" Int
15 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$
        TCMT IO Doc
"    --> " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Type -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Type -> m Doc
prettyTCM Type
tReduced

    Expr
e <- Expr -> TCM Expr
scopedExpr Expr
e

    TCM Term -> TCM Term
irrelevantIfProp <- (BlockT (TCMT IO) Bool -> TCMT IO (Either Blocker Bool)
forall (m :: * -> *) a.
Monad m =>
BlockT m a -> m (Either Blocker a)
runBlocked (BlockT (TCMT IO) Bool -> TCMT IO (Either Blocker Bool))
-> BlockT (TCMT IO) Bool -> TCMT IO (Either Blocker Bool)
forall a b. (a -> b) -> a -> b
$ Type -> BlockT (TCMT IO) Bool
forall a (m :: * -> *).
(LensSort a, PrettyTCM a, PureTCM m, MonadBlock m) =>
a -> m Bool
isPropM Type
t) TCMT IO (Either Blocker Bool)
-> (Either Blocker Bool -> TCMT IO (TCM Term -> TCM Term))
-> TCMT IO (TCM Term -> TCM Term)
forall a b. TCMT IO a -> (a -> TCMT IO b) -> TCMT IO b
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= \case
      Right Bool
True  -> do
        let mod :: Modality
mod = Modality
unitModality { modRelevance = Irrelevant }
        (TCM Term -> TCM Term) -> TCMT IO (TCM Term -> TCM Term)
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return ((TCM Term -> TCM Term) -> TCMT IO (TCM Term -> TCM Term))
-> (TCM Term -> TCM Term) -> TCMT IO (TCM Term -> TCM Term)
forall a b. (a -> b) -> a -> b
$ (Term -> Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> TCMT IO a -> TCMT IO b
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap Term -> Term
dontCare (TCM Term -> TCM Term)
-> (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Modality -> TCM Term -> TCM Term
forall (tcm :: * -> *) m a.
(MonadTCEnv tcm, LensModality m) =>
m -> tcm a -> tcm a
applyModalityToContext Modality
mod
      Either Blocker Bool
_ -> (TCM Term -> TCM Term) -> TCMT IO (TCM Term -> TCM Term)
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return TCM Term -> TCM Term
forall a. a -> a
id

    TCM Term -> TCM Term
irrelevantIfProp (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ Expr -> Type -> TCM Term -> TCM Term
tryInsertHiddenLambda Expr
e Type
tReduced (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ case Expr
e of

        A.ScopedExpr ScopeInfo
scope Expr
e -> TCM Term
forall a. HasCallStack => a
__IMPOSSIBLE__ -- setScope scope >> checkExpr e t

        -- a meta variable without arguments: type check directly for efficiency
        A.QuestionMark MetaInfo
i InteractionId
ii -> (Comparison -> Type -> TCM (MetaId, Term))
-> Comparison -> Type -> MetaInfo -> InteractionId -> TCM Term
checkQuestionMark (RunMetaOccursCheck -> Comparison -> Type -> TCM (MetaId, Term)
forall (m :: * -> *).
MonadMetaSolver m =>
RunMetaOccursCheck -> Comparison -> Type -> m (MetaId, Term)
newValueMeta' RunMetaOccursCheck
RunMetaOccursCheck) Comparison
cmp Type
t MetaInfo
i InteractionId
ii
        A.Underscore MetaInfo
i -> Comparison -> Type -> MetaInfo -> TCM Term
checkUnderscore Comparison
cmp Type
t MetaInfo
i

        A.WithApp ExprInfo
_ Expr
e [Expr]
es -> TypeError -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
TypeError -> m a
typeError (TypeError -> TCM Term) -> TypeError -> TCM Term
forall a b. (a -> b) -> a -> b
$ ArgName -> TypeError
NotImplemented ArgName
"type checking of with application"

        e0 :: Expr
e0@(A.App AppInfo
i Expr
q (Arg ArgInfo
ai Named_ Expr
e))
          | A.Quote ExprInfo
_ <- Expr -> Expr
unScope Expr
q, ArgInfo -> Bool
forall a. LensHiding a => a -> Bool
visible ArgInfo
ai -> do
          QName
x <- Expr -> TCMT IO QName
forall (m :: * -> *).
(MonadTCError m, MonadAbsToCon m) =>
Expr -> m QName
quotedName (Expr -> TCMT IO QName) -> Expr -> TCMT IO QName
forall a b. (a -> b) -> a -> b
$ Named_ Expr -> Expr
forall name a. Named name a -> a
namedThing Named_ Expr
e
          Type
ty <- TCM Type
qNameType
          Comparison -> Term -> Type -> Type -> TCM Term
forall (m :: * -> *).
(MonadConversion m, MonadTCM m) =>
Comparison -> Term -> Type -> Type -> m Term
coerce Comparison
cmp (QName -> Term
quoteName QName
x) Type
ty Type
t

          | A.QuoteTerm ExprInfo
_ <- Expr -> Expr
unScope Expr
q -> do
             (Term
et, Type
_) <- Expr -> TCM (Term, Type)
inferExpr (Named_ Expr -> Expr
forall name a. Named name a -> a
namedThing Named_ Expr
e)
             Comparison -> Term -> Type -> TCM Term
doQuoteTerm Comparison
cmp Term
et Type
t

        A.Quote{}     -> ArgName -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
ArgName -> m a
genericError ArgName
"quote must be applied to a defined name"
        A.QuoteTerm{} -> ArgName -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
ArgName -> m a
genericError ArgName
"quoteTerm must be applied to a term"
        A.Unquote{}   -> ArgName -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
ArgName -> m a
genericError ArgName
"unquote must be applied to a term"

        A.AbsurdLam ExprInfo
i Hiding
h -> Comparison -> ExprInfo -> Hiding -> Expr -> Type -> TCM Term
checkAbsurdLambda Comparison
cmp ExprInfo
i Hiding
h Expr
e Type
t

        A.ExtendedLam ExprInfo
i DefInfo
di Erased
erased QName
qname List1 Clause
cs ->
          Comparison
-> ExprInfo
-> DefInfo
-> Erased
-> QName
-> List1 Clause
-> Expr
-> Type
-> TCM Term
checkExtendedLambda Comparison
cmp ExprInfo
i DefInfo
di Erased
erased QName
qname List1 Clause
cs Expr
e Type
t

        A.Lam ExprInfo
i (A.DomainFull TypedBinding
b) Expr
e -> Comparison -> TypedBinding -> Expr -> Type -> TCM Term
checkLambda Comparison
cmp TypedBinding
b Expr
e Type
t

        A.Lam ExprInfo
i (A.DomainFree Maybe Expr
_ NamedArg (Binder' BindName)
x) Expr
e0
          | Maybe (WithOrigin (Ranged ArgName)) -> Bool
forall a. Maybe a -> Bool
isNothing (Named (WithOrigin (Ranged ArgName)) (Binder' BindName)
-> Maybe (WithOrigin (Ranged ArgName))
forall name a. Named name a -> Maybe name
nameOf (Named (WithOrigin (Ranged ArgName)) (Binder' BindName)
 -> Maybe (WithOrigin (Ranged ArgName)))
-> Named (WithOrigin (Ranged ArgName)) (Binder' BindName)
-> Maybe (WithOrigin (Ranged ArgName))
forall a b. (a -> b) -> a -> b
$ NamedArg (Binder' BindName)
-> Named (WithOrigin (Ranged ArgName)) (Binder' BindName)
forall e. Arg e -> e
unArg NamedArg (Binder' BindName)
x) Bool -> Bool -> Bool
&& Maybe Pattern -> Bool
forall a. Maybe a -> Bool
isNothing (Binder' BindName -> Maybe Pattern
forall a. Binder' a -> Maybe Pattern
A.binderPattern (Binder' BindName -> Maybe Pattern)
-> Binder' BindName -> Maybe Pattern
forall a b. (a -> b) -> a -> b
$ NamedArg (Binder' BindName) -> Binder' BindName
forall a. NamedArg a -> a
namedArg NamedArg (Binder' BindName)
x) ->
              Comparison -> Expr -> Type -> TCM Term
checkExpr' Comparison
cmp (ExprInfo -> LamBinding -> Expr -> Expr
A.Lam ExprInfo
i (ArgInfo -> Binder' Name -> LamBinding
domainFree (NamedArg (Binder' BindName) -> ArgInfo
forall a. LensArgInfo a => a -> ArgInfo
getArgInfo NamedArg (Binder' BindName)
x) (Binder' Name -> LamBinding) -> Binder' Name -> LamBinding
forall a b. (a -> b) -> a -> b
$ BindName -> Name
A.unBind (BindName -> Name) -> Binder' BindName -> Binder' Name
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> NamedArg (Binder' BindName) -> Binder' BindName
forall a. NamedArg a -> a
namedArg NamedArg (Binder' BindName)
x) Expr
e0) Type
t
          | Bool
otherwise -> TypeError -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
TypeError -> m a
typeError (TypeError -> TCM Term) -> TypeError -> TCM Term
forall a b. (a -> b) -> a -> b
$ ArgName -> TypeError
NotImplemented ArgName
"named arguments in lambdas"

        A.Lit ExprInfo
_ Literal
lit  -> Literal -> Type -> TCM Term
checkLiteral Literal
lit Type
t
        A.Let ExprInfo
i List1 LetBinding
ds Expr
e -> List1 LetBinding -> TCM Term -> TCM Term
forall (t :: * -> *) a.
Foldable t =>
t LetBinding -> TCM a -> TCM a
checkLetBindings List1 LetBinding
ds (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ Comparison -> Expr -> Type -> TCM Term
checkExpr' Comparison
cmp Expr
e Type
t
        e :: Expr
e@A.Pi{} -> do
            Type
t' <- Expr -> TCM Type
isType_ Expr
e
            let s :: Sort' Term
s = Type -> Sort' Term
forall a. LensSort a => a -> Sort' Term
getSort Type
t'
                v :: Term
v = Type -> Term
forall t a. Type'' t a -> a
unEl Type
t'
            Comparison -> Term -> Type -> Type -> TCM Term
forall (m :: * -> *).
(MonadConversion m, MonadTCM m) =>
Comparison -> Term -> Type -> Type -> m Term
coerce Comparison
cmp Term
v (Sort' Term -> Type
sort Sort' Term
s) Type
t

        A.Generalized Set QName
s Expr
e -> do
            ([Maybe QName]
_, Type
t') <- Set QName -> TCM Type -> TCM ([Maybe QName], Type)
generalizeType Set QName
s (TCM Type -> TCM ([Maybe QName], Type))
-> TCM Type -> TCM ([Maybe QName], Type)
forall a b. (a -> b) -> a -> b
$ Expr -> TCM Type
isType_ Expr
e
            --noFunctionsIntoSize t' t'
            let s :: Sort' Term
s = Type -> Sort' Term
forall a. LensSort a => a -> Sort' Term
getSort Type
t'
                v :: Term
v = Type -> Term
forall t a. Type'' t a -> a
unEl Type
t'
            Comparison -> Term -> Type -> Type -> TCM Term
forall (m :: * -> *).
(MonadConversion m, MonadTCM m) =>
Comparison -> Term -> Type -> Type -> m Term
coerce Comparison
cmp Term
v (Sort' Term -> Type
sort Sort' Term
s) Type
t

        e :: Expr
e@A.Fun{} -> do
            Type
t' <- Expr -> TCM Type
isType_ Expr
e
            let s :: Sort' Term
s = Type -> Sort' Term
forall a. LensSort a => a -> Sort' Term
getSort Type
t'
                v :: Term
v = Type -> Term
forall t a. Type'' t a -> a
unEl Type
t'
            Comparison -> Term -> Type -> Type -> TCM Term
forall (m :: * -> *).
(MonadConversion m, MonadTCM m) =>
Comparison -> Term -> Type -> Type -> m Term
coerce Comparison
cmp Term
v (Sort' Term -> Type
sort Sort' Term
s) Type
t

        A.Rec ExprInfo
_ [Either (FieldAssignment' Expr) ModuleName]
fs  -> Comparison
-> [Either (FieldAssignment' Expr) ModuleName]
-> Expr
-> Type
-> TCM Term
checkRecordExpression Comparison
cmp [Either (FieldAssignment' Expr) ModuleName]
fs Expr
e Type
t

        A.RecUpdate ExprInfo
ei Expr
recexpr Assigns
fs -> Comparison
-> ExprInfo -> Expr -> Assigns -> Expr -> Type -> TCM Term
checkRecordUpdate Comparison
cmp ExprInfo
ei Expr
recexpr Assigns
fs Expr
e Type
t

        A.DontCare Expr
e -> -- resurrect vars
          TCMT IO Bool -> TCM Term -> TCM Term -> TCM Term
forall (m :: * -> *) a. Monad m => m Bool -> m a -> m a -> m a
ifM ((Relevance
Irrelevant Relevance -> Relevance -> Bool
forall a. Eq a => a -> a -> Bool
==) (Relevance -> Bool) -> TCMT IO Relevance -> TCMT IO Bool
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> Lens' TCEnv Relevance -> TCMT IO Relevance
forall (m :: * -> *) a. MonadTCEnv m => Lens' TCEnv a -> m a
viewTC (Relevance -> f Relevance) -> TCEnv -> f TCEnv
Lens' TCEnv Relevance
eRelevance)
            (Term -> Term
dontCare (Term -> Term) -> TCM Term -> TCM Term
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> do Relevance -> TCM Term -> TCM Term
forall (tcm :: * -> *) r a.
(MonadTCEnv tcm, LensRelevance r) =>
r -> tcm a -> tcm a
applyRelevanceToContext Relevance
Irrelevant (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ Comparison -> Expr -> Type -> TCM Term
checkExpr' Comparison
cmp Expr
e Type
t)
            (ArgName -> TCM Term
forall (tcm :: * -> *) a.
(HasCallStack, MonadTCM tcm) =>
ArgName -> tcm a
internalError ArgName
"DontCare may only appear in irrelevant contexts")

        A.Dot{} -> ArgName -> TCM Term
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
ArgName -> m a
genericError ArgName
"Invalid dotted expression"

        -- Application
        Expr
_   | Application Expr
hd [NamedArg Expr]
args <- Expr -> AppView' Expr
appView Expr
e -> Comparison -> Expr -> [NamedArg Expr] -> Expr -> Type -> TCM Term
checkApplication Comparison
cmp Expr
hd [NamedArg Expr]
args Expr
e Type
t

      TCM Term -> ((TCErr, Blocker) -> TCM Term) -> TCM Term
forall a. TCM a -> ((TCErr, Blocker) -> TCM a) -> TCM a
`catchIlltypedPatternBlockedOnMeta` \ (TCErr
err, Blocker
x) -> do
        -- We could not check the term because the type of some pattern is blocked.
        -- It has to be blocked on some meta, so we can postpone,
        -- being sure it will be retried when a meta is solved
        -- (which might be the blocking meta in which case we actually make progress).
        ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term" Int
50 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat ([TCMT IO Doc] -> TCMT IO Doc) -> [TCMT IO Doc] -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$
          [ TCMT IO Doc
"checking pattern got stuck on meta: " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Blocker -> TCMT IO Doc
forall (m :: * -> *) a. (Applicative m, Pretty a) => a -> m Doc
pretty Blocker
x ]
        TypeCheckingProblem -> Blocker -> TCM Term
postponeTypeCheckingProblem (Comparison -> Expr -> Type -> TypeCheckingProblem
CheckExpr Comparison
cmp Expr
e Type
t) Blocker
x

  where
  -- Call checkExpr with an hidden lambda inserted if appropriate,
  -- else fallback.
  tryInsertHiddenLambda
    :: A.Expr
    -> Type      -- Reduced.
    -> TCM Term
    -> TCM Term
  tryInsertHiddenLambda :: Expr -> Type -> TCM Term -> TCM Term
tryInsertHiddenLambda Expr
e Type
tReduced TCM Term
fallback
    -- Insert hidden lambda if all of the following conditions are met:
    -- type is a hidden function type, {x : A} -> B or {{x : A}} -> B
    -- expression is not a lambda with the appropriate hiding yet
    | Pi (Dom{domInfo :: forall t e. Dom' t e -> ArgInfo
domInfo = ArgInfo
info, unDom :: forall t e. Dom' t e -> e
unDom = Type
a}) Abs Type
b <- Type -> Term
forall t a. Type'' t a -> a
unEl Type
tReduced
        , let h :: Hiding
h = ArgInfo -> Hiding
forall a. LensHiding a => a -> Hiding
getHiding ArgInfo
info
        , Hiding -> Bool
forall a. LensHiding a => a -> Bool
notVisible Hiding
h
        -- expression is not a matching hidden lambda or question mark
        , Bool -> Bool
not (Hiding -> Expr -> Bool
forall {a}. LensHiding a => a -> Expr -> Bool
hiddenLambdaOrHole Hiding
h Expr
e)
        = do
      let proceed :: TCM Term
proceed = ArgInfo -> ArgName -> TCM Term
doInsert (Origin -> ArgInfo -> ArgInfo
forall a. LensOrigin a => Origin -> a -> a
setOrigin Origin
Inserted ArgInfo
info) (ArgName -> TCM Term) -> ArgName -> TCM Term
forall a b. (a -> b) -> a -> b
$ Abs Type -> ArgName
forall a. Abs a -> ArgName
absName Abs Type
b
      ExpandHidden
expandHidden <- (TCEnv -> ExpandHidden) -> TCMT IO ExpandHidden
forall (m :: * -> *) a. MonadTCEnv m => (TCEnv -> a) -> m a
asksTC TCEnv -> ExpandHidden
envExpandLast
      -- If we skip the lambda insertion for an introduction,
      -- we will hit a dead end, so proceed no matter what.
      if Bool
definitelyIntroduction then TCM Term
proceed else
        -- #3019 and #4170: don't insert implicit lambdas in arguments to existing metas
        if ExpandHidden
expandHidden ExpandHidden -> ExpandHidden -> Bool
forall a. Eq a => a -> a -> Bool
== ExpandHidden
ReallyDontExpandLast then TCM Term
fallback else do
        -- Andreas, 2017-01-19, issue #2412:
        -- We do not want to insert a hidden lambda if A is
        -- possibly empty type of sizes, as this will produce an error.
        Type -> TCM Type
forall a (m :: * -> *). (Reduce a, MonadReduce m) => a -> m a
reduce Type
a TCM Type
-> (Type -> TCMT IO (Maybe BoundedSize))
-> TCMT IO (Maybe BoundedSize)
forall a b. TCMT IO a -> (a -> TCMT IO b) -> TCMT IO b
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= Type -> TCMT IO (Maybe BoundedSize)
forall a (m :: * -> *).
(IsSizeType a, HasOptions m, HasBuiltins m) =>
a -> m (Maybe BoundedSize)
forall (m :: * -> *).
(HasOptions m, HasBuiltins m) =>
Type -> m (Maybe BoundedSize)
isSizeType TCMT IO (Maybe BoundedSize)
-> (Maybe BoundedSize -> TCM Term) -> TCM Term
forall a b. TCMT IO a -> (a -> TCMT IO b) -> TCMT IO b
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= \case
          Just (BoundedLt Term
u) -> Term
-> (Blocker -> Term -> TCM Term)
-> (NotBlocked -> Term -> TCM Term)
-> TCM Term
forall t (m :: * -> *) a.
(Reduce t, IsMeta t, MonadReduce m) =>
t -> (Blocker -> t -> m a) -> (NotBlocked -> t -> m a) -> m a
ifBlocked Term
u (\ Blocker
_ Term
_ -> TCM Term
fallback) ((NotBlocked -> Term -> TCM Term) -> TCM Term)
-> (NotBlocked -> Term -> TCM Term) -> TCM Term
forall a b. (a -> b) -> a -> b
$ \ NotBlocked
_ Term
v -> do
            TCMT IO Bool -> TCM Term -> TCM Term -> TCM Term
forall (m :: * -> *) a. Monad m => m Bool -> m a -> m a -> m a
ifM (Term -> TCMT IO Bool
checkSizeNeverZero Term
v) TCM Term
proceed TCM Term
fallback
            TCM Term -> (TCErr -> TCM Term) -> TCM Term
forall a. TCMT IO a -> (TCErr -> TCMT IO a) -> TCMT IO a
forall e (m :: * -> *) a.
MonadError e m =>
m a -> (e -> m a) -> m a
`catchError` \TCErr
_ -> TCM Term
fallback
          Maybe BoundedSize
_ -> TCM Term
proceed

    | Bool
otherwise = TCM Term
fallback

    where
    re :: Range
re = Expr -> Range
forall a. HasRange a => a -> Range
getRange Expr
e
    rx :: Range
rx = Maybe (Position' SrcFile)
-> Range -> (Position' SrcFile -> Range) -> Range
forall a b. Maybe a -> b -> (a -> b) -> b
caseMaybe (Range -> Maybe (Position' SrcFile)
forall a. Range' a -> Maybe (Position' a)
rStart Range
re) Range
forall a. Range' a
noRange ((Position' SrcFile -> Range) -> Range)
-> (Position' SrcFile -> Range) -> Range
forall a b. (a -> b) -> a -> b
$ \ Position' SrcFile
pos -> Position' SrcFile -> Position' SrcFile -> Range
forall a. Position' a -> Position' a -> Range' a
posToRange Position' SrcFile
pos Position' SrcFile
pos

    doInsert :: ArgInfo -> ArgName -> TCM Term
doInsert ArgInfo
info ArgName
y = do
      Name
x <- Name -> Name
forall a. LensInScope a => a -> a
C.setNotInScope (Name -> Name) -> TCMT IO Name -> TCMT IO Name
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> Range -> ArgName -> TCMT IO Name
forall (m :: * -> *).
MonadFresh NameId m =>
Range -> ArgName -> m Name
freshName Range
rx ArgName
y
      ArgName -> Int -> ArgName -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> ArgName -> m ()
reportSLn ArgName
"tc.term.expr.impl" Int
15 (ArgName -> TCM ()) -> ArgName -> TCM ()
forall a b. (a -> b) -> a -> b
$ ArgName
"Inserting implicit lambda"
      Comparison -> Expr -> Type -> TCM Term
checkExpr' Comparison
cmp (ExprInfo -> LamBinding -> Expr -> Expr
A.Lam (Range -> ExprInfo
A.ExprRange Range
re) (ArgInfo -> Binder' Name -> LamBinding
domainFree ArgInfo
info (Binder' Name -> LamBinding) -> Binder' Name -> LamBinding
forall a b. (a -> b) -> a -> b
$ Name -> Binder' Name
forall a. a -> Binder' a
A.mkBinder Name
x) Expr
e) Type
tReduced

    hiddenLambdaOrHole :: a -> Expr -> Bool
hiddenLambdaOrHole a
h = \case
      A.AbsurdLam ExprInfo
_ Hiding
h'          -> a -> Hiding -> Bool
forall a b. (LensHiding a, LensHiding b) => a -> b -> Bool
sameHiding a
h Hiding
h'
      A.ExtendedLam ExprInfo
_ DefInfo
_ Erased
_ QName
_ List1 Clause
cls -> (Clause -> Bool) -> List1 Clause -> Bool
forall (t :: * -> *) a. Foldable t => (a -> Bool) -> t a -> Bool
any Clause -> Bool
hiddenLHS List1 Clause
cls
      A.Lam ExprInfo
_ LamBinding
bind Expr
_            -> a -> LamBinding -> Bool
forall a b. (LensHiding a, LensHiding b) => a -> b -> Bool
sameHiding a
h LamBinding
bind
      A.QuestionMark{}          -> Bool
True
      Expr
_                         -> Bool
False

    hiddenLHS :: Clause -> Bool
hiddenLHS (A.Clause (A.LHS LHSInfo
_ (A.LHSHead QName
_ (NamedArg Pattern
a : [NamedArg Pattern]
_))) [ProblemEq]
_ RHS
_ WhereDeclarations
_ Bool
_) = NamedArg Pattern -> Bool
forall a. LensHiding a => a -> Bool
notVisible NamedArg Pattern
a
    hiddenLHS Clause
_ = Bool
False

    -- Things with are definitely introductions,
    -- thus, cannot be of hidden Pi-type, unless they are hidden lambdas.
    definitelyIntroduction :: Bool
definitelyIntroduction = case Expr
e of
      A.Lam{}        -> Bool
True
      A.AbsurdLam{}  -> Bool
True
      A.Lit{}        -> Bool
True
      A.Pi{}         -> Bool
True
      A.Fun{}        -> Bool
True
      A.Rec{}        -> Bool
True
      A.RecUpdate{}  -> Bool
True
      A.ScopedExpr{} -> Bool
forall a. HasCallStack => a
__IMPOSSIBLE__
      Expr
_ -> Bool
False

---------------------------------------------------------------------------
-- * Reflection
---------------------------------------------------------------------------

doQuoteTerm :: Comparison -> Term -> Type -> TCM Term
doQuoteTerm :: Comparison -> Term -> Type -> TCM Term
doQuoteTerm Comparison
cmp Term
et Type
t = do
  Term
et'       <- Term -> TCM Term
forall (m :: * -> *) a.
(MonadTCEnv m, HasConstInfo m, HasOptions m, TermLike a) =>
a -> m a
etaContract (Term -> TCM Term) -> TCM Term -> TCM Term
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< Term -> TCM Term
forall a (m :: * -> *).
(InstantiateFull a, MonadReduce m) =>
a -> m a
instantiateFull Term
et
  case Term -> [MetaId]
forall a. AllMetas a => a -> [MetaId]
allMetasList Term
et' of
    []  -> do
      Term
q  <- Term -> TCM Term
quoteTerm Term
et'
      Type
ty <- TCM Term -> TCM Type
forall (m :: * -> *). Functor m => m Term -> m Type
el TCM Term
forall (m :: * -> *).
(HasBuiltins m, MonadError TCErr m, MonadTCEnv m, ReadTCState m) =>
m Term
primAgdaTerm
      Comparison -> Term -> Type -> Type -> TCM Term
forall (m :: * -> *).
(MonadConversion m, MonadTCM m) =>
Comparison -> Term -> Type -> Type -> m Term
coerce Comparison
cmp Term
q Type
ty Type
t
    [MetaId]
metas -> TypeCheckingProblem -> Blocker -> TCM Term
postponeTypeCheckingProblem (Comparison -> Term -> Type -> TypeCheckingProblem
DoQuoteTerm Comparison
cmp Term
et Type
t) (Blocker -> TCM Term) -> Blocker -> TCM Term
forall a b. (a -> b) -> a -> b
$ Set MetaId -> Blocker
unblockOnAllMetas (Set MetaId -> Blocker) -> Set MetaId -> Blocker
forall a b. (a -> b) -> a -> b
$ [MetaId] -> Set MetaId
forall a. Ord a => [a] -> Set a
Set.fromList [MetaId]
metas

-- | Unquote a TCM computation in a given hole.
unquoteM :: A.Expr -> Term -> Type -> TCM ()
unquoteM :: Expr -> Term -> Type -> TCM ()
unquoteM Expr
tacA Term
hole Type
holeType = do
  Term
tac <- Quantity -> TCM Term -> TCM Term
forall (tcm :: * -> *) q a.
(MonadTCEnv tcm, LensQuantity q) =>
q -> tcm a -> tcm a
applyQuantityToJudgement Quantity
zeroQuantity (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$
    Expr -> Type -> TCM Term
checkExpr Expr
tacA (Type -> TCM Term) -> TCM Type -> TCM Term
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< (TCM Term -> TCM Type
forall (m :: * -> *). Functor m => m Term -> m Type
el TCM Term
forall (m :: * -> *).
(HasBuiltins m, MonadError TCErr m, MonadTCEnv m, ReadTCState m) =>
m Term
primAgdaTerm TCM Type -> TCM Type -> TCM Type
forall (m :: * -> *). Applicative m => m Type -> m Type -> m Type
--> TCM Term -> TCM Type
forall (m :: * -> *). Functor m => m Term -> m Type
el (TCM Term
forall (m :: * -> *).
(HasBuiltins m, MonadError TCErr m, MonadTCEnv m, ReadTCState m) =>
m Term
primAgdaTCM TCM Term -> TCM Term -> TCM Term
forall (m :: * -> *). Applicative m => m Term -> m Term -> m Term
<#> TCM Term
forall (m :: * -> *).
(HasBuiltins m, MonadError TCErr m, MonadTCEnv m, ReadTCState m) =>
m Term
primLevelZero TCM Term -> TCM Term -> TCM Term
forall (m :: * -> *). Applicative m => m Term -> m Term -> m Term
<@> TCM Term
forall (m :: * -> *).
(HasBuiltins m, MonadError TCErr m, MonadTCEnv m, ReadTCState m) =>
m Term
primUnit))
  TCM () -> TCM ()
forall a. TCM a -> TCM a
inFreshModuleIfFreeParams (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$ Term -> Term -> Type -> TCM ()
unquoteTactic Term
tac Term
hole Type
holeType

-- | Run a tactic `tac : Term → TC ⊤` in a hole (second argument) of the type
--   given by the third argument. Runs the continuation if successful.
unquoteTactic :: Term -> Term -> Type -> TCM ()
unquoteTactic :: Term -> Term -> Type -> TCM ()
unquoteTactic Term
tac Term
hole Type
goal = do
  ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.tactic" Int
40 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
sep
    [ TCMT IO Doc
"Running tactic" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Term -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Term -> m Doc
prettyTCM Term
tac
    , Int -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Functor m => Int -> m Doc -> m Doc
nest Int
2 (TCMT IO Doc -> TCMT IO Doc) -> TCMT IO Doc -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ TCMT IO Doc
"on" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Term -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Term -> m Doc
prettyTCM Term
hole TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> TCMT IO Doc
":" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Type -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Type -> m Doc
prettyTCM Type
goal ]
  Either UnquoteError (Term, [QName])
ok  <- UnquoteM Term -> TCM (Either UnquoteError (Term, [QName]))
forall a. UnquoteM a -> TCM (Either UnquoteError (a, [QName]))
runUnquoteM (UnquoteM Term -> TCM (Either UnquoteError (Term, [QName])))
-> UnquoteM Term -> TCM (Either UnquoteError (Term, [QName]))
forall a b. (a -> b) -> a -> b
$ Term -> Term -> UnquoteM Term
unquoteTCM Term
tac Term
hole
  case Either UnquoteError (Term, [QName])
ok of
    Left (BlockedOnMeta TCState
oldState Blocker
blocker) -> do
      TCState -> TCM ()
forall (m :: * -> *). MonadTCState m => TCState -> m ()
putTC TCState
oldState
      let stripFreshMeta :: MetaId -> f Blocker
stripFreshMeta MetaId
x = Blocker
-> (MetaVariable -> Blocker) -> Maybe MetaVariable -> Blocker
forall b a. b -> (a -> b) -> Maybe a -> b
maybe Blocker
neverUnblock (Blocker -> MetaVariable -> Blocker
forall a b. a -> b -> a
const (Blocker -> MetaVariable -> Blocker)
-> Blocker -> MetaVariable -> Blocker
forall a b. (a -> b) -> a -> b
$ MetaId -> Blocker
unblockOnMeta MetaId
x) (Maybe MetaVariable -> Blocker)
-> f (Maybe MetaVariable) -> f Blocker
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> MetaId -> f (Maybe MetaVariable)
forall (m :: * -> *).
ReadTCState m =>
MetaId -> m (Maybe MetaVariable)
lookupLocalMeta' MetaId
x
      Blocker
blocker' <- (MetaId -> TCMT IO Blocker) -> Blocker -> TCMT IO Blocker
forall (m :: * -> *).
Monad m =>
(MetaId -> m Blocker) -> Blocker -> m Blocker
onBlockingMetasM MetaId -> TCMT IO Blocker
forall {f :: * -> *}. ReadTCState f => MetaId -> f Blocker
stripFreshMeta Blocker
blocker
      Range
r <- case Set MetaId -> [MetaId]
forall a. Set a -> [a]
Set.toList (Set MetaId -> [MetaId]) -> Set MetaId -> [MetaId]
forall a b. (a -> b) -> a -> b
$ Blocker -> Set MetaId
allBlockingMetas Blocker
blocker' of
            MetaId
x : [MetaId]
_ -> Maybe MetaVariable -> Range
forall a. HasRange a => a -> Range
getRange (Maybe MetaVariable -> Range)
-> TCMT IO (Maybe MetaVariable) -> TCMT IO Range
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> MetaId -> TCMT IO (Maybe MetaVariable)
forall (m :: * -> *).
ReadTCState m =>
MetaId -> m (Maybe MetaVariable)
lookupLocalMeta' MetaId
x
            []    -> Range -> TCMT IO Range
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Range
forall a. Range' a
noRange
      Range -> TCM () -> TCM ()
forall (m :: * -> *) x a.
(MonadTrace m, HasRange x) =>
x -> m a -> m a
setCurrentRange Range
r (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$
        Blocker -> Constraint -> TCM ()
forall (m :: * -> *).
MonadConstraint m =>
Blocker -> Constraint -> m ()
addConstraint Blocker
blocker' (Term -> Term -> Type -> Constraint
UnquoteTactic Term
tac Term
hole Type
goal)
    Left UnquoteError
err -> TypeError -> TCM ()
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
TypeError -> m a
typeError (TypeError -> TCM ()) -> TypeError -> TCM ()
forall a b. (a -> b) -> a -> b
$ UnquoteError -> TypeError
UnquoteFailed UnquoteError
err
    Right (Term, [QName])
_ -> () -> TCM ()
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return ()

---------------------------------------------------------------------------
-- * Meta variables
---------------------------------------------------------------------------

-- | Check an interaction point without arguments.
checkQuestionMark
  :: (Comparison -> Type -> TCM (MetaId, Term))
  -> Comparison
  -> Type            -- ^ Not reduced!
  -> A.MetaInfo
  -> InteractionId
  -> TCM Term
checkQuestionMark :: (Comparison -> Type -> TCM (MetaId, Term))
-> Comparison -> Type -> MetaInfo -> InteractionId -> TCM Term
checkQuestionMark Comparison -> Type -> TCM (MetaId, Term)
new Comparison
cmp Type
t0 MetaInfo
i InteractionId
ii = do
  ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.interaction" Int
20 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
sep
    [ TCMT IO Doc
"Found interaction point"
    , ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (ArgName -> TCMT IO Doc)
-> (IsAbstract -> ArgName) -> IsAbstract -> TCMT IO Doc
forall b c a. (b -> c) -> (a -> b) -> a -> c
. IsAbstract -> ArgName
forall a. Show a => a -> ArgName
show (IsAbstract -> TCMT IO Doc) -> TCMT IO IsAbstract -> TCMT IO Doc
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< (TCEnv -> IsAbstract) -> TCMT IO IsAbstract
forall (m :: * -> *) a. MonadTCEnv m => (TCEnv -> a) -> m a
asksTC (TCEnv -> Lens' TCEnv IsAbstract -> IsAbstract
forall o i. o -> Lens' o i -> i
^. (IsAbstract -> f IsAbstract) -> TCEnv -> f TCEnv
forall a. LensIsAbstract a => Lens' a IsAbstract
Lens' TCEnv IsAbstract
lensIsAbstract)
    , InteractionId -> TCMT IO Doc
forall (m :: * -> *) a. (Applicative m, Pretty a) => a -> m Doc
pretty InteractionId
ii
    , TCMT IO Doc
":"
    , Type -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Type -> m Doc
prettyTCM Type
t0
    ]
  ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.interaction" Int
60 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
sep
    [ TCMT IO Doc
"Raw:"
    , ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (Type -> ArgName
forall a. Show a => a -> ArgName
show Type
t0)
    ]
  (Comparison -> Type -> TCM (MetaId, Term))
-> Comparison -> Type -> MetaInfo -> TCM Term
checkMeta ((Comparison -> Type -> TCM (MetaId, Term))
-> InteractionId -> Comparison -> Type -> TCM (MetaId, Term)
newQuestionMark' Comparison -> Type -> TCM (MetaId, Term)
new InteractionId
ii) Comparison
cmp Type
t0 MetaInfo
i -- Andreas, 2013-05-22 use unreduced type t0!

-- | Check an underscore without arguments.
checkUnderscore :: Comparison -> Type -> A.MetaInfo -> TCM Term
checkUnderscore :: Comparison -> Type -> MetaInfo -> TCM Term
checkUnderscore = (Comparison -> Type -> TCM (MetaId, Term))
-> Comparison -> Type -> MetaInfo -> TCM Term
checkMeta (RunMetaOccursCheck -> Comparison -> Type -> TCM (MetaId, Term)
forall (m :: * -> *).
MonadMetaSolver m =>
RunMetaOccursCheck -> Comparison -> Type -> m (MetaId, Term)
newValueMeta RunMetaOccursCheck
RunMetaOccursCheck)

-- | Type check a meta variable.
checkMeta :: (Comparison -> Type -> TCM (MetaId, Term)) -> Comparison -> Type -> A.MetaInfo -> TCM Term
checkMeta :: (Comparison -> Type -> TCM (MetaId, Term))
-> Comparison -> Type -> MetaInfo -> TCM Term
checkMeta Comparison -> Type -> TCM (MetaId, Term)
newMeta Comparison
cmp Type
t MetaInfo
i = (Term, Type) -> Term
forall a b. (a, b) -> a
fst ((Term, Type) -> Term) -> TCM (Term, Type) -> TCM Term
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> (Comparison -> Type -> TCM (MetaId, Term))
-> Maybe (Comparison, Type) -> MetaInfo -> TCM (Term, Type)
checkOrInferMeta Comparison -> Type -> TCM (MetaId, Term)
newMeta ((Comparison, Type) -> Maybe (Comparison, Type)
forall a. a -> Maybe a
Just (Comparison
cmp , Type
t)) MetaInfo
i

-- | Infer the type of a meta variable.
--   If it is a new one, we create a new meta for its type.
inferMeta :: (Comparison -> Type -> TCM (MetaId, Term)) -> A.MetaInfo -> TCM (Elims -> Term, Type)
inferMeta :: (Comparison -> Type -> TCM (MetaId, Term))
-> MetaInfo -> TCM (Elims -> Term, Type)
inferMeta Comparison -> Type -> TCM (MetaId, Term)
newMeta MetaInfo
i = (Term -> Elims -> Term) -> (Term, Type) -> (Elims -> Term, Type)
forall a c b. (a -> c) -> (a, b) -> (c, b)
mapFst Term -> Elims -> Term
forall t. Apply t => t -> Elims -> t
applyE ((Term, Type) -> (Elims -> Term, Type))
-> TCM (Term, Type) -> TCM (Elims -> Term, Type)
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> (Comparison -> Type -> TCM (MetaId, Term))
-> Maybe (Comparison, Type) -> MetaInfo -> TCM (Term, Type)
checkOrInferMeta Comparison -> Type -> TCM (MetaId, Term)
newMeta Maybe (Comparison, Type)
forall a. Maybe a
Nothing MetaInfo
i

-- | Type check a meta variable.
--   If its type is not given, we return its type, or a fresh one, if it is a new meta.
--   If its type is given, we check that the meta has this type, and we return the same
--   type.
checkOrInferMeta
  :: (Comparison -> Type -> TCM (MetaId, Term))
  -> Maybe (Comparison , Type)
  -> A.MetaInfo
  -> TCM (Term, Type)
checkOrInferMeta :: (Comparison -> Type -> TCM (MetaId, Term))
-> Maybe (Comparison, Type) -> MetaInfo -> TCM (Term, Type)
checkOrInferMeta Comparison -> Type -> TCM (MetaId, Term)
newMeta Maybe (Comparison, Type)
mt MetaInfo
i = do
  case MetaInfo -> Maybe MetaId
A.metaNumber MetaInfo
i of
    Maybe MetaId
Nothing -> do
      ScopeInfo -> TCM ()
setScope (MetaInfo -> ScopeInfo
A.metaScope MetaInfo
i)
      (Comparison
cmp , Type
t) <- TCMT IO (Comparison, Type)
-> ((Comparison, Type) -> TCMT IO (Comparison, Type))
-> Maybe (Comparison, Type)
-> TCMT IO (Comparison, Type)
forall b a. b -> (a -> b) -> Maybe a -> b
maybe ((Comparison
CmpEq,) (Type -> (Comparison, Type))
-> TCM Type -> TCMT IO (Comparison, Type)
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> TCM Type -> TCM Type
forall (m :: * -> *) a.
(MonadTCEnv m, HasOptions m, MonadDebug m) =>
m a -> m a
workOnTypes TCM Type
newTypeMeta_) (Comparison, Type) -> TCMT IO (Comparison, Type)
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Maybe (Comparison, Type)
mt
      (MetaId
x, Term
v) <- Comparison -> Type -> TCM (MetaId, Term)
newMeta Comparison
cmp Type
t
      MetaId -> ArgName -> TCM ()
forall (m :: * -> *).
MonadMetaSolver m =>
MetaId -> ArgName -> m ()
setMetaNameSuggestion MetaId
x (MetaInfo -> ArgName
A.metaNameSuggestion MetaInfo
i)
      (Term, Type) -> TCM (Term, Type)
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Term
v, Type
t)
    -- Rechecking an existing metavariable
    Just MetaId
x -> do
      let v :: Term
v = MetaId -> Elims -> Term
MetaV MetaId
x []
      ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.meta.check" Int
20 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$
        TCMT IO Doc
"checking existing meta " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Term -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Term -> m Doc
prettyTCM Term
v
      Type
t' <- MetaId -> TCM Type
forall (m :: * -> *). ReadTCState m => MetaId -> m Type
metaType MetaId
x
      ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.meta.check" Int
20 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$
        Int -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Functor m => Int -> m Doc -> m Doc
nest Int
2 (TCMT IO Doc -> TCMT IO Doc) -> TCMT IO Doc -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ TCMT IO Doc
"of type " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Type -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Type -> m Doc
prettyTCM Type
t'
      case Maybe (Comparison, Type)
mt of
        Maybe (Comparison, Type)
Nothing -> (Term, Type) -> TCM (Term, Type)
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Term
v, Type
t')
        Just (Comparison
cmp , Type
t) -> (,Type
t) (Term -> (Term, Type)) -> TCM Term -> TCM (Term, Type)
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> Comparison -> Term -> Type -> Type -> TCM Term
forall (m :: * -> *).
(MonadConversion m, MonadTCM m) =>
Comparison -> Term -> Type -> Type -> m Term
coerce Comparison
cmp Term
v Type
t' Type
t

-- | Turn a domain-free binding (e.g. lambda) into a domain-full one,
--   by inserting an underscore for the missing type.
domainFree :: ArgInfo -> A.Binder' A.Name -> A.LamBinding
domainFree :: ArgInfo -> Binder' Name -> LamBinding
domainFree ArgInfo
info Binder' Name
x =
  TypedBinding -> LamBinding
A.DomainFull (TypedBinding -> LamBinding) -> TypedBinding -> LamBinding
forall a b. (a -> b) -> a -> b
$ Range
-> List1 (NamedArg (Binder' BindName)) -> Expr -> TypedBinding
A.mkTBind Range
r (NamedArg (Binder' BindName) -> List1 (NamedArg (Binder' BindName))
forall el coll. Singleton el coll => el -> coll
singleton (NamedArg (Binder' BindName)
 -> List1 (NamedArg (Binder' BindName)))
-> NamedArg (Binder' BindName)
-> List1 (NamedArg (Binder' BindName))
forall a b. (a -> b) -> a -> b
$ ArgInfo -> Binder' BindName -> NamedArg (Binder' BindName)
forall a. ArgInfo -> a -> NamedArg a
unnamedArg ArgInfo
info (Binder' BindName -> NamedArg (Binder' BindName))
-> Binder' BindName -> NamedArg (Binder' BindName)
forall a b. (a -> b) -> a -> b
$ (Name -> BindName) -> Binder' Name -> Binder' BindName
forall a b. (a -> b) -> Binder' a -> Binder' b
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap Name -> BindName
A.mkBindName Binder' Name
x)
               (Expr -> TypedBinding) -> Expr -> TypedBinding
forall a b. (a -> b) -> a -> b
$ MetaInfo -> Expr
A.Underscore MetaInfo
underscoreInfo
  where
    r :: Range
r = Binder' Name -> Range
forall a. HasRange a => a -> Range
getRange Binder' Name
x
    underscoreInfo :: MetaInfo
underscoreInfo = A.MetaInfo
      { metaRange :: Range
A.metaRange          = Range
r
      , metaScope :: ScopeInfo
A.metaScope          = ScopeInfo
emptyScopeInfo
      , metaNumber :: Maybe MetaId
A.metaNumber         = Maybe MetaId
forall a. Maybe a
Nothing
      , metaNameSuggestion :: ArgName
A.metaNameSuggestion = Name -> ArgName
forall a. Pretty a => a -> ArgName
prettyShow (Name -> ArgName) -> Name -> ArgName
forall a b. (a -> b) -> a -> b
$ Name -> Name
A.nameConcrete (Name -> Name) -> Name -> Name
forall a b. (a -> b) -> a -> b
$ Binder' Name -> Name
forall a. Binder' a -> a
A.binderName Binder' Name
x
      }


-- | Check arguments whose value we already know.
--
--   This function can be used to check user-supplied parameters
--   we have already computed by inference.
--
--   Precondition: The type @t@ of the head has enough domains.

checkKnownArguments
  :: [NamedArg A.Expr]  -- ^ User-supplied arguments (hidden ones may be missing).
  -> Args               -- ^ Inferred arguments (including hidden ones).
  -> Type               -- ^ Type of the head (must be Pi-type with enough domains).
  -> TCM (Args, Type)   -- ^ Remaining inferred arguments, remaining type.
checkKnownArguments :: [NamedArg Expr] -> [Arg Term] -> Type -> TCM ([Arg Term], Type)
checkKnownArguments []           [Arg Term]
vs Type
t = ([Arg Term], Type) -> TCM ([Arg Term], Type)
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return ([Arg Term]
vs, Type
t)
checkKnownArguments (NamedArg Expr
arg : [NamedArg Expr]
args) [Arg Term]
vs Type
t = do
  ([Arg Term]
vs', Type
t') <- NamedArg Expr -> TCM ([Arg Term], Type) -> TCM ([Arg Term], Type)
forall (m :: * -> *) x a.
(MonadTrace m, HasRange x) =>
x -> m a -> m a
setCurrentRange NamedArg Expr
arg (TCM ([Arg Term], Type) -> TCM ([Arg Term], Type))
-> TCM ([Arg Term], Type) -> TCM ([Arg Term], Type)
forall a b. (a -> b) -> a -> b
$ NamedArg Expr -> [Arg Term] -> Type -> TCM ([Arg Term], Type)
checkKnownArgument NamedArg Expr
arg [Arg Term]
vs Type
t
  [NamedArg Expr] -> [Arg Term] -> Type -> TCM ([Arg Term], Type)
checkKnownArguments [NamedArg Expr]
args [Arg Term]
vs' Type
t'

-- | Check an argument whose value we already know.

checkKnownArgument
  :: NamedArg A.Expr    -- ^ User-supplied argument.
  -> Args               -- ^ Inferred arguments (including hidden ones).
  -> Type               -- ^ Type of the head (must be Pi-type with enough domains).
  -> TCM (Args, Type)   -- ^ Remaining inferred arguments, remaining type.
checkKnownArgument :: NamedArg Expr -> [Arg Term] -> Type -> TCM ([Arg Term], Type)
checkKnownArgument NamedArg Expr
arg [] Type
_ = Doc -> TCM ([Arg Term], Type)
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
Doc -> m a
genericDocError (Doc -> TCM ([Arg Term], Type))
-> TCMT IO Doc -> TCM ([Arg Term], Type)
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< do
  TCMT IO Doc
"Invalid projection parameter " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> NamedArg Expr -> TCMT IO Doc
forall a (m :: * -> *).
(ToConcrete a, Pretty (ConOfAbs a), MonadAbsToCon m) =>
a -> m Doc
prettyA NamedArg Expr
arg
-- Andreas, 2019-07-22, while #3353: we should use domName, not absName !!
-- WAS:
-- checkKnownArgument arg@(Arg info e) (Arg _infov v : vs) t = do
--   (dom@Dom{domInfo = info',unDom = a}, b) <- mustBePi t
--   -- Skip the arguments from vs that do not correspond to e
--   if not (sameHiding info info'
--           && (visible info || maybe True (absName b ==) (bareNameOf e)))
checkKnownArgument NamedArg Expr
arg (Arg ArgInfo
_ Term
v : [Arg Term]
vs) Type
t = do
  -- Skip the arguments from vs that do not correspond to e
  (dom :: Dom Type
dom@Dom{ unDom :: forall t e. Dom' t e -> e
unDom = Type
a }, Abs Type
b) <- Type -> TCMT IO (Dom Type, Abs Type)
forall (m :: * -> *).
MonadReduce m =>
Type -> m (Dom Type, Abs Type)
mustBePi Type
t
  if Bool -> Bool
not (Bool -> Bool) -> Bool -> Bool
forall a b. (a -> b) -> a -> b
$ Bool -> Maybe Bool -> Bool
forall a. a -> Maybe a -> a
fromMaybe Bool
forall a. HasCallStack => a
__IMPOSSIBLE__ (Maybe Bool -> Bool) -> Maybe Bool -> Bool
forall a b. (a -> b) -> a -> b
$ NamedArg Expr -> Dom Type -> Maybe Bool
forall arg dom.
(LensNamed arg, NameOf arg ~ WithOrigin (Ranged ArgName),
 LensHiding arg, LensNamed dom,
 NameOf dom ~ WithOrigin (Ranged ArgName), LensHiding dom) =>
arg -> dom -> Maybe Bool
fittingNamedArg NamedArg Expr
arg Dom Type
dom
    -- Continue with the next one
    then NamedArg Expr -> [Arg Term] -> Type -> TCM ([Arg Term], Type)
checkKnownArgument NamedArg Expr
arg [Arg Term]
vs (Abs Type
b Abs Type -> SubstArg Type -> Type
forall a. Subst a => Abs a -> SubstArg a -> a
`absApp` Term
SubstArg Type
v)
    -- Found the right argument
    else do
      Term
u <- NamedArg Expr -> Type -> TCM Term
checkNamedArg NamedArg Expr
arg Type
a
      Type -> Term -> Term -> TCM ()
forall (m :: * -> *).
MonadConversion m =>
Type -> Term -> Term -> m ()
equalTerm Type
a Term
u Term
v
      ([Arg Term], Type) -> TCM ([Arg Term], Type)
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return ([Arg Term]
vs, Abs Type
b Abs Type -> SubstArg Type -> Type
forall a. Subst a => Abs a -> SubstArg a -> a
`absApp` Term
SubstArg Type
v)

-- | Check a single argument.

checkNamedArg :: NamedArg A.Expr -> Type -> TCM Term
checkNamedArg :: NamedArg Expr -> Type -> TCM Term
checkNamedArg arg :: NamedArg Expr
arg@(Arg ArgInfo
info Named_ Expr
e0) Type
t0 = do
  let e :: Expr
e = Named_ Expr -> Expr
forall name a. Named name a -> a
namedThing Named_ Expr
e0
  let x :: ArgName
x = ArgName -> Named_ Expr -> ArgName
forall a.
(LensNamed a, NameOf a ~ WithOrigin (Ranged ArgName)) =>
ArgName -> a -> ArgName
bareNameWithDefault ArgName
"" Named_ Expr
e0
  Call -> TCM Term -> TCM Term
forall a. Call -> TCMT IO a -> TCMT IO a
forall (m :: * -> *) a. MonadTrace m => Call -> m a -> m a
traceCall (Comparison -> Expr -> Type -> Call
CheckExprCall Comparison
CmpLeq Expr
e Type
t0) (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ do
    ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.args.named" Int
15 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ do
        TCMT IO Doc
"Checking named arg" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
sep
          [ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
fsep [ NamedArg Expr -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => NamedArg Expr -> m Doc
prettyTCM NamedArg Expr
arg, TCMT IO Doc
":", Type -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Type -> m Doc
prettyTCM Type
t0 ]
          ]
    ArgName -> Int -> ArgName -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> ArgName -> m ()
reportSLn ArgName
"tc.term.args.named" Int
75 (ArgName -> TCM ()) -> ArgName -> TCM ()
forall a b. (a -> b) -> a -> b
$ ArgName
"  arg = " ArgName -> ArgName -> ArgName
forall a. [a] -> [a] -> [a]
++ NamedArg Expr -> ArgName
forall a. Show a => a -> ArgName
show (NamedArg Expr -> NamedArg Expr
forall a. ExprLike a => a -> a
deepUnscope NamedArg Expr
arg)
    -- Ulf, 2017-03-24: (#2172) Always treat explicit _ and ? as implicit
    -- argument (i.e. solve with unification).
    let checkU :: MetaInfo -> TCM Term
checkU = (Comparison -> Type -> TCM (MetaId, Term))
-> Comparison -> Type -> MetaInfo -> TCM Term
checkMeta (ArgInfo -> ArgName -> Comparison -> Type -> TCM (MetaId, Term)
forall (m :: * -> *).
(PureTCM m, MonadMetaSolver m) =>
ArgInfo -> ArgName -> Comparison -> Type -> m (MetaId, Term)
newMetaArg (Hiding -> ArgInfo -> ArgInfo
forall a. LensHiding a => Hiding -> a -> a
setHiding Hiding
Hidden ArgInfo
info) ArgName
x) Comparison
CmpLeq Type
t0
    let checkQ :: MetaInfo -> InteractionId -> TCM Term
checkQ = (Comparison -> Type -> TCM (MetaId, Term))
-> Comparison -> Type -> MetaInfo -> InteractionId -> TCM Term
checkQuestionMark (ArgInfo -> ArgName -> Comparison -> Type -> TCM (MetaId, Term)
newInteractionMetaArg (Hiding -> ArgInfo -> ArgInfo
forall a. LensHiding a => Hiding -> a -> a
setHiding Hiding
Hidden ArgInfo
info) ArgName
x) Comparison
CmpLeq Type
t0
    if Bool -> Bool
not (Bool -> Bool) -> Bool -> Bool
forall a b. (a -> b) -> a -> b
$ Expr -> Bool
isHole Expr
e then Expr -> Type -> TCM Term
checkExpr Expr
e Type
t0 else TCM Term -> TCM Term
forall a. TCM a -> TCM a
localScope (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ do
      -- Note: we need localScope here,
      -- as scopedExpr manipulates the scope in the state.
      -- However, we may not pull localScope over checkExpr!
      -- This is why we first test for isHole, and only do
      -- scope manipulations if we actually handle the checking
      -- of e here (and not pass it to checkExpr).
      Expr -> TCM Expr
scopedExpr Expr
e TCM Expr -> (Expr -> TCM Term) -> TCM Term
forall a b. TCMT IO a -> (a -> TCMT IO b) -> TCMT IO b
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= \case
        A.Underscore MetaInfo
i ->  MetaInfo -> TCM Term
checkU MetaInfo
i
        A.QuestionMark MetaInfo
i InteractionId
ii -> MetaInfo -> InteractionId -> TCM Term
checkQ MetaInfo
i InteractionId
ii
        Expr
_ -> TCM Term
forall a. HasCallStack => a
__IMPOSSIBLE__
  where
  isHole :: Expr -> Bool
isHole A.Underscore{} = Bool
True
  isHole A.QuestionMark{} = Bool
True
  isHole (A.ScopedExpr ScopeInfo
_ Expr
e) = Expr -> Bool
isHole Expr
e
  isHole Expr
_ = Bool
False

-- | Infer the type of an expression. Implemented by checking against a meta
--   variable.  Except for neutrals, for them a polymorphic type is inferred.
inferExpr :: A.Expr -> TCM (Term, Type)
-- inferExpr e = inferOrCheck e Nothing
inferExpr :: Expr -> TCM (Term, Type)
inferExpr = ExpandHidden -> Expr -> TCM (Term, Type)
inferExpr' ExpandHidden
DontExpandLast

inferExpr' :: ExpandHidden -> A.Expr -> TCM (Term, Type)
inferExpr' :: ExpandHidden -> Expr -> TCM (Term, Type)
inferExpr' ExpandHidden
exh Expr
e = Call -> TCM (Term, Type) -> TCM (Term, Type)
forall a. Call -> TCMT IO a -> TCMT IO a
forall (m :: * -> *) a. MonadTrace m => Call -> m a -> m a
traceCall (Expr -> Call
InferExpr Expr
e) (TCM (Term, Type) -> TCM (Term, Type))
-> TCM (Term, Type) -> TCM (Term, Type)
forall a b. (a -> b) -> a -> b
$ do
  let Application Expr
hd [NamedArg Expr]
args = Expr -> AppView' Expr
appView Expr
e
  ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.infer" Int
30 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
    [ TCMT IO Doc
"inferExpr': appView of " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Expr -> TCMT IO Doc
forall a (m :: * -> *).
(ToConcrete a, Pretty (ConOfAbs a), MonadAbsToCon m) =>
a -> m Doc
prettyA Expr
e
    , TCMT IO Doc
"  hd   = " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Expr -> TCMT IO Doc
forall a (m :: * -> *).
(ToConcrete a, Pretty (ConOfAbs a), MonadAbsToCon m) =>
a -> m Doc
prettyA Expr
hd
    , TCMT IO Doc
"  args = " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> [NamedArg Expr] -> TCMT IO Doc
forall a ce (m :: * -> *).
(ToConcrete a, ConOfAbs a ~ [ce], Pretty ce, MonadAbsToCon m) =>
a -> m Doc
prettyAs [NamedArg Expr]
args
    ]
  ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.infer" Int
60 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
    [ ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (ArgName -> TCMT IO Doc) -> ArgName -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ ArgName
"  hd (raw) = " ArgName -> ArgName -> ArgName
forall a. [a] -> [a] -> [a]
++ Expr -> ArgName
forall a. Show a => a -> ArgName
show Expr
hd
    ]
  ExpandHidden -> Expr -> [NamedArg Expr] -> Expr -> TCM (Term, Type)
inferApplication ExpandHidden
exh Expr
hd [NamedArg Expr]
args Expr
e

defOrVar :: A.Expr -> Bool
defOrVar :: Expr -> Bool
defOrVar A.Var{} = Bool
True
defOrVar A.Def'{} = Bool
True
defOrVar A.Proj{} = Bool
True
defOrVar (A.ScopedExpr ScopeInfo
_ Expr
e) = Expr -> Bool
defOrVar Expr
e
defOrVar Expr
_     = Bool
False

-- | Used to check aliases @f = e@.
--   Switches off 'ExpandLast' for the checking of top-level application.
checkDontExpandLast :: Comparison -> A.Expr -> Type -> TCM Term
checkDontExpandLast :: Comparison -> Expr -> Type -> TCM Term
checkDontExpandLast Comparison
cmp Expr
e Type
t = case Expr
e of
  Expr
_ | Application Expr
hd [NamedArg Expr]
args <- Expr -> AppView' Expr
appView Expr
e,  Expr -> Bool
defOrVar Expr
hd ->
    Call -> TCM Term -> TCM Term
forall a. Call -> TCMT IO a -> TCMT IO a
forall (m :: * -> *) a. MonadTrace m => Call -> m a -> m a
traceCall (Comparison -> Expr -> Type -> Call
CheckExprCall Comparison
cmp Expr
e Type
t) (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ TCM Term -> TCM Term
forall a. TCM a -> TCM a
localScope (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ TCM Term -> TCM Term
forall a. TCM a -> TCM a
dontExpandLast (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ do
      Comparison -> Expr -> [NamedArg Expr] -> Expr -> Type -> TCM Term
checkApplication Comparison
cmp Expr
hd [NamedArg Expr]
args Expr
e Type
t
  Expr
_ -> Comparison -> Expr -> Type -> TCM Term
checkExpr' Comparison
cmp Expr
e Type
t -- note that checkExpr always sets ExpandLast

-- | Check whether a de Bruijn index is bound by a module telescope.
isModuleFreeVar :: Int -> TCM Bool
isModuleFreeVar :: Int -> TCMT IO Bool
isModuleFreeVar Int
i = do
  [Arg Term]
params <- ModuleName -> TCMT IO [Arg Term]
forall (m :: * -> *).
(Functor m, Applicative m, HasOptions m, MonadTCEnv m,
 ReadTCState m, MonadDebug m) =>
ModuleName -> m [Arg Term]
moduleParamsToApply (ModuleName -> TCMT IO [Arg Term])
-> TCMT IO ModuleName -> TCMT IO [Arg Term]
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< TCMT IO ModuleName
forall (m :: * -> *). MonadTCEnv m => m ModuleName
currentModule
  Bool -> TCMT IO Bool
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Bool -> TCMT IO Bool) -> Bool -> TCMT IO Bool
forall a b. (a -> b) -> a -> b
$ (Arg Term -> Bool) -> [Arg Term] -> Bool
forall (t :: * -> *) a. Foldable t => (a -> Bool) -> t a -> Bool
any ((Term -> Term -> Bool
forall a. Eq a => a -> a -> Bool
== Int -> Elims -> Term
Var Int
i []) (Term -> Bool) -> (Arg Term -> Term) -> Arg Term -> Bool
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Arg Term -> Term
forall e. Arg e -> e
unArg) [Arg Term]
params

-- | Infer the type of an expression, and if it is of the form
--   @{tel} -> D vs@ for some datatype @D@ then insert the hidden
--   arguments.  Otherwise, leave the type polymorphic.
inferExprForWith :: Arg A.Expr -> TCM (Term, Type)
inferExprForWith :: Arg Expr -> TCM (Term, Type)
inferExprForWith (Arg ArgInfo
info Expr
e) = ArgName -> Int -> ArgName -> TCM (Term, Type) -> TCM (Term, Type)
forall a. ArgName -> Int -> ArgName -> TCMT IO a -> TCMT IO a
forall (m :: * -> *) a.
MonadDebug m =>
ArgName -> Int -> ArgName -> m a -> m a
verboseBracket ArgName
"tc.with.infer" Int
20 ArgName
"inferExprForWith" (TCM (Term, Type) -> TCM (Term, Type))
-> TCM (Term, Type) -> TCM (Term, Type)
forall a b. (a -> b) -> a -> b
$
  Relevance -> TCM (Term, Type) -> TCM (Term, Type)
forall (tcm :: * -> *) r a.
(MonadTCEnv tcm, LensRelevance r) =>
r -> tcm a -> tcm a
applyRelevanceToContext (ArgInfo -> Relevance
forall a. LensRelevance a => a -> Relevance
getRelevance ArgInfo
info) (TCM (Term, Type) -> TCM (Term, Type))
-> TCM (Term, Type) -> TCM (Term, Type)
forall a b. (a -> b) -> a -> b
$ do
    ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.with.infer" Int
20 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ TCMT IO Doc
"inferExprforWith " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Expr -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Expr -> m Doc
prettyTCM Expr
e
    ArgName -> Int -> ArgName -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> ArgName -> m ()
reportSLn  ArgName
"tc.with.infer" Int
80 (ArgName -> TCM ()) -> ArgName -> TCM ()
forall a b. (a -> b) -> a -> b
$ ArgName
"inferExprforWith " ArgName -> ArgName -> ArgName
forall a. [a] -> [a] -> [a]
++ Expr -> ArgName
forall a. Show a => a -> ArgName
show (Expr -> Expr
forall a. ExprLike a => a -> a
deepUnscope Expr
e)
    Call -> TCM (Term, Type) -> TCM (Term, Type)
forall a. Call -> TCMT IO a -> TCMT IO a
forall (m :: * -> *) a. MonadTrace m => Call -> m a -> m a
traceCall (Expr -> Call
InferExpr Expr
e) (TCM (Term, Type) -> TCM (Term, Type))
-> TCM (Term, Type) -> TCM (Term, Type)
forall a b. (a -> b) -> a -> b
$ do
      -- With wants type and term fully instantiated!
      (Term
v, Type
t) <- (Term, Type) -> TCM (Term, Type)
forall a (m :: * -> *).
(InstantiateFull a, MonadReduce m) =>
a -> m a
instantiateFull ((Term, Type) -> TCM (Term, Type))
-> TCM (Term, Type) -> TCM (Term, Type)
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< Expr -> TCM (Term, Type)
inferExpr Expr
e
      Term
v0 <- Term -> TCM Term
forall a (m :: * -> *). (Reduce a, MonadReduce m) => a -> m a
reduce Term
v
      -- Andreas 2014-11-06, issue 1342.
      -- Check that we do not `with` on a module parameter!
      case Term
v0 of
        Var Int
i [] -> TCMT IO Bool -> TCM () -> TCM ()
forall (m :: * -> *). Monad m => m Bool -> m () -> m ()
whenM (Int -> TCMT IO Bool
isModuleFreeVar Int
i) (TCM () -> TCM ()) -> TCM () -> TCM ()
forall a b. (a -> b) -> a -> b
$ do
          ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.with.infer" Int
80 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
            [ ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (ArgName -> TCMT IO Doc) -> ArgName -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ ArgName
"with expression is variable " ArgName -> ArgName -> ArgName
forall a. [a] -> [a] -> [a]
++ Int -> ArgName
forall a. Show a => a -> ArgName
show Int
i
            , TCMT IO Doc
"current modules = " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> do ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (ArgName -> TCMT IO Doc)
-> (ModuleName -> ArgName) -> ModuleName -> TCMT IO Doc
forall b c a. (b -> c) -> (a -> b) -> a -> c
. ModuleName -> ArgName
forall a. Show a => a -> ArgName
show (ModuleName -> TCMT IO Doc) -> TCMT IO ModuleName -> TCMT IO Doc
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< TCMT IO ModuleName
forall (m :: * -> *). MonadTCEnv m => m ModuleName
currentModule
            , TCMT IO Doc
"current module free vars = " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> do ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (ArgName -> TCMT IO Doc) -> (Int -> ArgName) -> Int -> TCMT IO Doc
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Int -> ArgName
forall a. Show a => a -> ArgName
show (Int -> TCMT IO Doc) -> TCMT IO Int -> TCMT IO Doc
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< TCMT IO Int
getCurrentModuleFreeVars
            , TCMT IO Doc
"context size = " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> do ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (ArgName -> TCMT IO Doc) -> (Int -> ArgName) -> Int -> TCMT IO Doc
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Int -> ArgName
forall a. Show a => a -> ArgName
show (Int -> TCMT IO Doc) -> TCMT IO Int -> TCMT IO Doc
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< TCMT IO Int
forall (m :: * -> *). (Applicative m, MonadTCEnv m) => m Int
getContextSize
            , TCMT IO Doc
"current context = " TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> do Telescope -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Telescope -> m Doc
prettyTCM (Telescope -> TCMT IO Doc) -> TCMT IO Telescope -> TCMT IO Doc
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< TCMT IO Telescope
forall (m :: * -> *). (Applicative m, MonadTCEnv m) => m Telescope
getContextTelescope
            ]
          TypeError -> TCM ()
forall (m :: * -> *) a.
(HasCallStack, MonadTCError m) =>
TypeError -> m a
typeError (TypeError -> TCM ()) -> TypeError -> TCM ()
forall a b. (a -> b) -> a -> b
$ Expr -> Term -> TypeError
WithOnFreeVariable Expr
e Term
v0
        Term
_        -> () -> TCM ()
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return ()
      -- Possibly insert hidden arguments.
      TelV Telescope
tel Type
t0 <- Int -> (Dom Type -> Bool) -> Type -> TCMT IO (TelV Type)
forall (m :: * -> *).
(MonadReduce m, MonadAddContext m) =>
Int -> (Dom Type -> Bool) -> Type -> m (TelV Type)
telViewUpTo' (-Int
1) (Bool -> Bool
not (Bool -> Bool) -> (Dom Type -> Bool) -> Dom Type -> Bool
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Dom Type -> Bool
forall a. LensHiding a => a -> Bool
visible) Type
t
      case Type -> Term
forall t a. Type'' t a -> a
unEl Type
t0 of
        Def QName
d Elims
vs -> do
          Maybe DataOrRecord
res <- QName -> TCM (Maybe DataOrRecord)
isDataOrRecordType QName
d
          case Maybe DataOrRecord
res of
            Maybe DataOrRecord
Nothing -> (Term, Type) -> TCM (Term, Type)
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Term
v, Type
t)
            Just{}  -> do
              ([Arg Term]
args, Type
t1) <- Int -> (Hiding -> Bool) -> Type -> TCM ([Arg Term], Type)
forall (m :: * -> *).
(PureTCM m, MonadMetaSolver m, MonadTCM m) =>
Int -> (Hiding -> Bool) -> Type -> m ([Arg Term], Type)
implicitArgs (-Int
1) Hiding -> Bool
forall a. LensHiding a => a -> Bool
notVisible Type
t
              (Term, Type) -> TCM (Term, Type)
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Term
v Term -> [Arg Term] -> Term
forall t. Apply t => t -> [Arg Term] -> t
`apply` [Arg Term]
args, Type
t1)
        Term
_ -> (Term, Type) -> TCM (Term, Type)
forall a. a -> TCMT IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Term
v, Type
t)

---------------------------------------------------------------------------
-- * Let bindings
---------------------------------------------------------------------------

checkLetBindings :: Foldable t => t A.LetBinding -> TCM a -> TCM a
checkLetBindings :: forall (t :: * -> *) a.
Foldable t =>
t LetBinding -> TCM a -> TCM a
checkLetBindings = (LetBinding -> (TCM a -> TCM a) -> TCM a -> TCM a)
-> (TCM a -> TCM a) -> t LetBinding -> TCM a -> TCM a
forall a b. (a -> b -> b) -> b -> t a -> b
forall (t :: * -> *) a b.
Foldable t =>
(a -> b -> b) -> b -> t a -> b
foldr ((TCM a -> TCM a) -> (TCM a -> TCM a) -> TCM a -> TCM a
forall b c a. (b -> c) -> (a -> b) -> a -> c
(.) ((TCM a -> TCM a) -> (TCM a -> TCM a) -> TCM a -> TCM a)
-> (LetBinding -> TCM a -> TCM a)
-> LetBinding
-> (TCM a -> TCM a)
-> TCM a
-> TCM a
forall b c a. (b -> c) -> (a -> b) -> a -> c
. LetBinding -> TCM a -> TCM a
forall a. LetBinding -> TCM a -> TCM a
checkLetBinding) TCM a -> TCM a
forall a. a -> a
id

checkLetBinding :: A.LetBinding -> TCM a -> TCM a

checkLetBinding :: forall a. LetBinding -> TCM a -> TCM a
checkLetBinding b :: LetBinding
b@(A.LetBind LetInfo
i ArgInfo
info BindName
x Expr
t Expr
e) TCM a
ret =
  Call -> TCM a -> TCM a
forall a. Call -> TCMT IO a -> TCMT IO a
forall (m :: * -> *) a. MonadTrace m => Call -> m a -> m a
traceCall (LetBinding -> Call
CheckLetBinding LetBinding
b) (TCM a -> TCM a) -> TCM a -> TCM a
forall a b. (a -> b) -> a -> b
$ do
    -- #4131: Only DontExpandLast if no user written type signature
    let check :: Comparison -> Expr -> Type -> TCM Term
check | ArgInfo -> Origin
forall a. LensOrigin a => a -> Origin
getOrigin ArgInfo
info Origin -> Origin -> Bool
forall a. Eq a => a -> a -> Bool
== Origin
Inserted = Comparison -> Expr -> Type -> TCM Term
checkDontExpandLast
              | Bool
otherwise                  = Comparison -> Expr -> Type -> TCM Term
checkExpr'
    Type
t <- TCM Type -> TCM Type
forall (m :: * -> *) a.
(MonadTCEnv m, HasOptions m, MonadDebug m) =>
m a -> m a
workOnTypes (TCM Type -> TCM Type) -> TCM Type -> TCM Type
forall a b. (a -> b) -> a -> b
$ Expr -> TCM Type
isType_ Expr
t
    Term
v <- ArgInfo -> TCM Term -> TCM Term
forall (tcm :: * -> *) m a.
(MonadTCEnv tcm, LensModality m) =>
m -> tcm a -> tcm a
applyModalityToContext ArgInfo
info (TCM Term -> TCM Term) -> TCM Term -> TCM Term
forall a b. (a -> b) -> a -> b
$ Comparison -> Expr -> Type -> TCM Term
check Comparison
CmpLeq Expr
e Type
t
    ArgInfo -> Origin -> Name -> Term -> Type -> TCM a -> TCM a
forall (m :: * -> *) a.
MonadAddContext m =>
ArgInfo -> Origin -> Name -> Term -> Type -> m a -> m a
addLetBinding ArgInfo
info Origin
UserWritten (BindName -> Name
A.unBind BindName
x) Term
v Type
t TCM a
ret

checkLetBinding b :: LetBinding
b@(A.LetPatBind LetInfo
i Pattern
p Expr
e) TCM a
ret =
  Call -> TCM a -> TCM a
forall a. Call -> TCMT IO a -> TCMT IO a
forall (m :: * -> *) a. MonadTrace m => Call -> m a -> m a
traceCall (LetBinding -> Call
CheckLetBinding LetBinding
b) (TCM a -> TCM a) -> TCM a -> TCM a
forall a b. (a -> b) -> a -> b
$ do
    Pattern
p <- Pattern -> TCM Pattern
forall a. ExpandPatternSynonyms a => a -> TCM a
expandPatternSynonyms Pattern
p
    (Term
v, Type
t) <- ExpandHidden -> Expr -> TCM (Term, Type)
inferExpr' ExpandHidden
ExpandLast Expr
e
    let -- construct a type  t -> dummy  for use in checkLeftHandSide
        t0 :: Type
t0 = Sort' Term -> Term -> Type
forall t a. Sort' t -> a -> Type'' t a
El (Type -> Sort' Term
forall a. LensSort a => a -> Sort' Term
getSort Type
t) (Term -> Type) -> Term -> Type
forall a b. (a -> b) -> a -> b
$ Dom Type -> Abs Type -> Term
Pi (Type -> Dom Type
forall a. a -> Dom a
defaultDom Type
t) (ArgName -> Type -> Abs Type
forall a. ArgName -> a -> Abs a
NoAbs ArgName
forall a. Underscore a => a
underscore Type
HasCallStack => Type
__DUMMY_TYPE__)
        p0 :: NamedArg Pattern
p0 = ArgInfo
-> Named (WithOrigin (Ranged ArgName)) Pattern -> NamedArg Pattern
forall e. ArgInfo -> e -> Arg e
Arg ArgInfo
defaultArgInfo (Maybe (WithOrigin (Ranged ArgName))
-> Pattern -> Named (WithOrigin (Ranged ArgName)) Pattern
forall name a. Maybe name -> a -> Named name a
Named Maybe (WithOrigin (Ranged ArgName))
forall a. Maybe a
Nothing Pattern
p)
    ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.let.pattern" Int
10 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
      [ TCMT IO Doc
"let-binding pattern p at type t"
      , Int -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Functor m => Int -> m Doc -> m Doc
nest Int
2 (TCMT IO Doc -> TCMT IO Doc) -> TCMT IO Doc -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
        [ TCMT IO Doc
"p (A) =" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Pattern -> TCMT IO Doc
forall a (m :: * -> *).
(ToConcrete a, Pretty (ConOfAbs a), MonadAbsToCon m) =>
a -> m Doc
prettyA Pattern
p
        , TCMT IO Doc
"t     =" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Type -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Type -> m Doc
prettyTCM Type
t
        , TCMT IO Doc
"cxtRel=" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> do Relevance -> TCMT IO Doc
forall (m :: * -> *) a. (Applicative m, Pretty a) => a -> m Doc
pretty (Relevance -> TCMT IO Doc) -> TCMT IO Relevance -> TCMT IO Doc
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< Lens' TCEnv Relevance -> TCMT IO Relevance
forall (m :: * -> *) a. MonadTCEnv m => Lens' TCEnv a -> m a
viewTC (Relevance -> f Relevance) -> TCEnv -> f TCEnv
Lens' TCEnv Relevance
eRelevance
        , TCMT IO Doc
"cxtQnt=" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> do Quantity -> TCMT IO Doc
forall (m :: * -> *) a. (Applicative m, Pretty a) => a -> m Doc
pretty (Quantity -> TCMT IO Doc) -> TCMT IO Quantity -> TCMT IO Doc
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< Lens' TCEnv Quantity -> TCMT IO Quantity
forall (m :: * -> *) a. MonadTCEnv m => Lens' TCEnv a -> m a
viewTC (Quantity -> f Quantity) -> TCEnv -> f TCEnv
Lens' TCEnv Quantity
eQuantity
        ]
      ]
    Int
fvs <- TCMT IO Int
forall (m :: * -> *). (Applicative m, MonadTCEnv m) => m Int
getContextSize
    Call
-> Maybe QName
-> [NamedArg Pattern]
-> Type
-> Maybe Substitution
-> [ProblemEq]
-> (LHSResult -> TCM a)
-> TCM a
forall a.
Call
-> Maybe QName
-> [NamedArg Pattern]
-> Type
-> Maybe Substitution
-> [ProblemEq]
-> (LHSResult -> TCM a)
-> TCM a
checkLeftHandSide (Pattern -> Telescope -> Type -> Call
CheckPattern Pattern
p Telescope
forall a. Tele a
EmptyTel Type
t) Maybe QName
forall a. Maybe a
Nothing [NamedArg Pattern
p0] Type
t0 Maybe Substitution
forall a. Maybe a
Nothing [] ((LHSResult -> TCM a) -> TCM a) -> (LHSResult -> TCM a) -> TCM a
forall a b. (a -> b) -> a -> b
$ \ (LHSResult Int
_ Telescope
delta0 NAPs
ps Bool
_ Arg Type
_t Substitution
_ [AsBinding]
asb IntSet
_ Bool
_) -> [AsBinding] -> TCM a -> TCM a
forall a. [AsBinding] -> TCM a -> TCM a
bindAsPatterns [AsBinding]
asb (TCM a -> TCM a) -> TCM a -> TCM a
forall a b. (a -> b) -> a -> b
$ do
          -- After dropping the free variable patterns there should be a single pattern left.
      let p :: DeBruijnPattern
p = case Int -> NAPs -> NAPs
forall a. Int -> [a] -> [a]
drop Int
fvs NAPs
ps of [Arg (Named_ DeBruijnPattern)
p] -> Arg (Named_ DeBruijnPattern) -> DeBruijnPattern
forall a. NamedArg a -> a
namedArg Arg (Named_ DeBruijnPattern)
p; NAPs
_ -> DeBruijnPattern
forall a. HasCallStack => a
__IMPOSSIBLE__
          -- Also strip the context variables from the telescope
          delta :: Telescope
delta = ListTel -> Telescope
telFromList (ListTel -> Telescope) -> ListTel -> Telescope
forall a b. (a -> b) -> a -> b
$ Int -> ListTel -> ListTel
forall a. Int -> [a] -> [a]
drop Int
fvs (ListTel -> ListTel) -> ListTel -> ListTel
forall a b. (a -> b) -> a -> b
$ Telescope -> ListTel
forall t. Tele (Dom t) -> [Dom (ArgName, t)]
telToList Telescope
delta0
      ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.let.pattern" Int
20 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ Int -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Functor m => Int -> m Doc -> m Doc
nest Int
2 (TCMT IO Doc -> TCMT IO Doc) -> TCMT IO Doc -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
        [ TCMT IO Doc
"p (I) =" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> DeBruijnPattern -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => DeBruijnPattern -> m Doc
prettyTCM DeBruijnPattern
p
        , TCMT IO Doc
"delta =" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Telescope -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Telescope -> m Doc
prettyTCM Telescope
delta
        , TCMT IO Doc
"cxtRel=" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> do Relevance -> TCMT IO Doc
forall (m :: * -> *) a. (Applicative m, Pretty a) => a -> m Doc
pretty (Relevance -> TCMT IO Doc) -> TCMT IO Relevance -> TCMT IO Doc
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< Lens' TCEnv Relevance -> TCMT IO Relevance
forall (m :: * -> *) a. MonadTCEnv m => Lens' TCEnv a -> m a
viewTC (Relevance -> f Relevance) -> TCEnv -> f TCEnv
Lens' TCEnv Relevance
eRelevance
        , TCMT IO Doc
"cxtQnt=" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> do Quantity -> TCMT IO Doc
forall (m :: * -> *) a. (Applicative m, Pretty a) => a -> m Doc
pretty (Quantity -> TCMT IO Doc) -> TCMT IO Quantity -> TCMT IO Doc
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< Lens' TCEnv Quantity -> TCMT IO Quantity
forall (m :: * -> *) a. MonadTCEnv m => Lens' TCEnv a -> m a
viewTC (Quantity -> f Quantity) -> TCEnv -> f TCEnv
Lens' TCEnv Quantity
eQuantity
        ]
      ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.let.pattern" Int
80 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ Int -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Functor m => Int -> m Doc -> m Doc
nest Int
2 (TCMT IO Doc -> TCMT IO Doc) -> TCMT IO Doc -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
        [ TCMT IO Doc
"p (I) =" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> (ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (ArgName -> TCMT IO Doc)
-> (DeBruijnPattern -> ArgName) -> DeBruijnPattern -> TCMT IO Doc
forall b c a. (b -> c) -> (a -> b) -> a -> c
. DeBruijnPattern -> ArgName
forall a. Show a => a -> ArgName
show) DeBruijnPattern
p
        ]
      -- We translate it into a list of projections.
      [Term -> Term]
fs <- DeBruijnPattern -> TCM [Term -> Term]
recordPatternToProjections DeBruijnPattern
p
      -- We remove the bindings for the pattern variables from the context.
      [ContextEntry]
cxt0 <- TCMT IO [ContextEntry]
forall (m :: * -> *). MonadTCEnv m => m [ContextEntry]
getContext
      let ([ContextEntry]
binds, [ContextEntry]
cxt) = Int -> [ContextEntry] -> ([ContextEntry], [ContextEntry])
forall a. Int -> [a] -> ([a], [a])
splitAt (Telescope -> Int
forall a. Sized a => a -> Int
size Telescope
delta) [ContextEntry]
cxt0
          toDrop :: Int
toDrop       = [ContextEntry] -> Int
forall a. [a] -> Int
forall (t :: * -> *) a. Foldable t => t a -> Int
length [ContextEntry]
binds

          -- We create a substitution for the let-bound variables
          -- (unfortunately, we cannot refer to x in internal syntax
          -- so we have to copy v).
          sigma :: [Term]
sigma = ((Term -> Term) -> Term) -> [Term -> Term] -> [Term]
forall a b. (a -> b) -> [a] -> [b]
map ((Term -> Term) -> Term -> Term
forall a b. (a -> b) -> a -> b
$ Term
v) [Term -> Term]
fs
          -- We apply the types of the let bound-variables to this substitution.
          -- The 0th variable in a context is the last one, so we reverse.
          -- Further, we need to lower all other de Bruijn indices by
          -- the size of delta, so we append the identity substitution.
          sub :: Substitution
sub    = [Term] -> Substitution
forall a. DeBruijn a => [a] -> Substitution' a
parallelS ([Term] -> [Term]
forall a. [a] -> [a]
reverse [Term]
sigma)

      Substitution
-> ([ContextEntry] -> [ContextEntry]) -> TCM a -> TCM a
forall a.
Substitution
-> ([ContextEntry] -> [ContextEntry]) -> TCMT IO a -> TCMT IO a
forall (m :: * -> *) a.
MonadAddContext m =>
Substitution -> ([ContextEntry] -> [ContextEntry]) -> m a -> m a
updateContext Substitution
sub (Int -> [ContextEntry] -> [ContextEntry]
forall a. Int -> [a] -> [a]
drop Int
toDrop) (TCM a -> TCM a) -> TCM a -> TCM a
forall a b. (a -> b) -> a -> b
$ do
        ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.let.pattern" Int
20 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ Int -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Functor m => Int -> m Doc -> m Doc
nest Int
2 (TCMT IO Doc -> TCMT IO Doc) -> TCMT IO Doc -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
          [ TCMT IO Doc
"delta =" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Telescope -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Telescope -> m Doc
prettyTCM Telescope
delta
          , TCMT IO Doc
"binds =" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> [ContextEntry] -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => [ContextEntry] -> m Doc
prettyTCM [ContextEntry]
binds
          ]
        let fdelta :: [Dom Type]
fdelta = Telescope -> [Dom Type]
forall a. TermSubst a => Tele (Dom a) -> [Dom a]
flattenTel Telescope
delta
        ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.let.pattern" Int
20 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ Int -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Functor m => Int -> m Doc -> m Doc
nest Int
2 (TCMT IO Doc -> TCMT IO Doc) -> TCMT IO Doc -> TCMT IO Doc
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
          [ TCMT IO Doc
"fdelta =" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Telescope -> TCMT IO Doc -> TCMT IO Doc
forall b (m :: * -> *) a.
(AddContext b, MonadAddContext m) =>
b -> m a -> m a
forall (m :: * -> *) a.
MonadAddContext m =>
Telescope -> m a -> m a
addContext Telescope
delta ([Dom Type] -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => [Dom Type] -> m Doc
prettyTCM [Dom Type]
fdelta)
          ]
        let tsl :: [Dom Type]
tsl  = Substitution' (SubstArg [Dom Type]) -> [Dom Type] -> [Dom Type]
forall a. Subst a => Substitution' (SubstArg a) -> a -> a
applySubst Substitution
Substitution' (SubstArg [Dom Type])
sub [Dom Type]
fdelta
        -- We get a list of types
        let ts :: [Type]
ts   = (Dom Type -> Type) -> [Dom Type] -> [Type]
forall a b. (a -> b) -> [a] -> [b]
map Dom Type -> Type
forall t e. Dom' t e -> e
unDom [Dom Type]
tsl
        -- and relevances.
        let infos :: [ArgInfo]
infos = (Dom Type -> ArgInfo) -> [Dom Type] -> [ArgInfo]
forall a b. (a -> b) -> [a] -> [b]
map Dom Type -> ArgInfo
forall t e. Dom' t e -> ArgInfo
domInfo [Dom Type]
tsl
        -- We get list of names of the let-bound vars from the context.
        let xs :: [Name]
xs   = (ContextEntry -> Name) -> [ContextEntry] -> [Name]
forall a b. (a -> b) -> [a] -> [b]
map ((Name, Type) -> Name
forall a b. (a, b) -> a
fst ((Name, Type) -> Name)
-> (ContextEntry -> (Name, Type)) -> ContextEntry -> Name
forall b c a. (b -> c) -> (a -> b) -> a -> c
. ContextEntry -> (Name, Type)
forall t e. Dom' t e -> e
unDom) ([ContextEntry] -> [ContextEntry]
forall a. [a] -> [a]
reverse [ContextEntry]
binds)
        -- We add all the bindings to the context.
        ((ArgInfo, Name, Term, Type) -> TCM a -> TCM a)
-> TCM a -> [(ArgInfo, Name, Term, Type)] -> TCM a
forall a b. (a -> b -> b) -> b -> [a] -> b
forall (t :: * -> *) a b.
Foldable t =>
(a -> b -> b) -> b -> t a -> b
foldr ((ArgInfo -> Name -> Term -> Type -> TCM a -> TCM a)
-> (ArgInfo, Name, Term, Type) -> TCM a -> TCM a
forall a b c d e. (a -> b -> c -> d -> e) -> (a, b, c, d) -> e
uncurry4 ((ArgInfo -> Name -> Term -> Type -> TCM a -> TCM a)
 -> (ArgInfo, Name, Term, Type) -> TCM a -> TCM a)
-> (ArgInfo -> Name -> Term -> Type -> TCM a -> TCM a)
-> (ArgInfo, Name, Term, Type)
-> TCM a
-> TCM a
forall a b. (a -> b) -> a -> b
$ (ArgInfo -> Origin -> Name -> Term -> Type -> TCM a -> TCM a)
-> Origin -> ArgInfo -> Name -> Term -> Type -> TCM a -> TCM a
forall a b c. (a -> b -> c) -> b -> a -> c
flip ArgInfo -> Origin -> Name -> Term -> Type -> TCM a -> TCM a
forall (m :: * -> *) a.
MonadAddContext m =>
ArgInfo -> Origin -> Name -> Term -> Type -> m a -> m a
addLetBinding Origin
UserWritten) TCM a
ret ([(ArgInfo, Name, Term, Type)] -> TCM a)
-> [(ArgInfo, Name, Term, Type)] -> TCM a
forall a b. (a -> b) -> a -> b
$ [ArgInfo]
-> [Name] -> [Term] -> [Type] -> [(ArgInfo, Name, Term, Type)]
forall a b c d. [a] -> [b] -> [c] -> [d] -> [(a, b, c, d)]
List.zip4 [ArgInfo]
infos [Name]
xs [Term]
sigma [Type]
ts

checkLetBinding (A.LetApply ModuleInfo
i Erased
erased ModuleName
x ModuleApplication
modapp ScopeCopyInfo
copyInfo ImportDirective
dir) TCM a
ret = do
  -- Any variables in the context that doesn't belong to the current
  -- module should go with the new module.
  -- Example: @f x y = let open M t in u@.
  -- There are 2 @new@ variables, @x@ and @y@, going into the anonynous module
  -- @module _ (x : _) (y : _) = M t@.
  Int
fv   <- TCMT IO Int
getCurrentModuleFreeVars
  Int
n    <- TCMT IO Int
forall (m :: * -> *). (Applicative m, MonadTCEnv m) => m Int
getContextSize
  let new :: Int
new = Int
n Int -> Int -> Int
forall a. Num a => a -> a -> a
- Int
fv
  ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.let.apply" Int
10 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ TCMT IO Doc
"Applying" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> ModuleName -> TCMT IO Doc
forall (m :: * -> *) a. (Applicative m, Pretty a) => a -> m Doc
pretty ModuleName
x TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> ModuleApplication -> TCMT IO Doc
forall a (m :: * -> *).
(ToConcrete a, Pretty (ConOfAbs a), MonadAbsToCon m) =>
a -> m Doc
prettyA ModuleApplication
modapp TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<?> (TCMT IO Doc
"with" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> Int -> TCMT IO Doc
forall (m :: * -> *) a. (Applicative m, Show a) => a -> m Doc
pshow Int
new TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> TCMT IO Doc
"free variables")
  ArgName -> Int -> TCMT IO Doc -> TCM ()
forall (m :: * -> *).
MonadDebug m =>
ArgName -> Int -> TCMT IO Doc -> m ()
reportSDoc ArgName
"tc.term.let.apply" Int
20 (TCMT IO Doc -> TCM ()) -> TCMT IO Doc -> TCM ()
forall a b. (a -> b) -> a -> b
$ [TCMT IO Doc] -> TCMT IO Doc
forall (m :: * -> *) (t :: * -> *).
(Applicative m, Foldable t) =>
t (m Doc) -> m Doc
vcat
    [ TCMT IO Doc
"context =" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> (Telescope -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => Telescope -> m Doc
prettyTCM (Telescope -> TCMT IO Doc) -> TCMT IO Telescope -> TCMT IO Doc
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< TCMT IO Telescope
forall (m :: * -> *). (Applicative m, MonadTCEnv m) => m Telescope
getContextTelescope)
    , TCMT IO Doc
"module  =" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> (ModuleName -> TCMT IO Doc
forall a (m :: * -> *). (PrettyTCM a, MonadPretty m) => a -> m Doc
forall (m :: * -> *). MonadPretty m => ModuleName -> m Doc
prettyTCM (ModuleName -> TCMT IO Doc) -> TCMT IO ModuleName -> TCMT IO Doc
forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< TCMT IO ModuleName
forall (m :: * -> *). MonadTCEnv m => m ModuleName
currentModule)
    , TCMT IO Doc
"fv      =" TCMT IO Doc -> TCMT IO Doc -> TCMT IO Doc
forall (m :: * -> *). Applicative m => m Doc -> m Doc -> m Doc
<+> ArgName -> TCMT IO Doc
forall (m :: * -> *). Applicative m => ArgName -> m Doc
text (Int -> ArgName
forall a. Show a => a -> ArgName
show Int
fv)
    ]
  ModuleInfo
-> Erased
-> ModuleName
-> ModuleApplication
-> ScopeCopyInfo
-> ImportDirective
-> TCM ()
checkSectionApplication ModuleInfo
i Erased
erased ModuleName
x ModuleApplication
modapp ScopeCopyInfo
copyInfo
    -- Some other part of the code ensures that "open public" is
    -- ignored in let expressions. Thus there is no need for
    -- checkSectionApplication to throw an error if the import
    -- directive does contain "open public".
    ImportDirective
dir{ publicOpen = Nothing }
  ModuleName -> Int -> TCM a -> TCM a
forall a. ModuleName -> Int -> TCM a -> TCM a
withAnonymousModule ModuleName
x Int
new TCM a
ret
-- LetOpen and LetDeclaredVariable are only used for highlighting.
checkLetBinding A.LetOpen{} TCM a
ret = TCM a
ret
checkLetBinding (A.LetDeclaredVariable BindName
_) TCM a
ret = TCM a
ret