Safe Haskell | None |
---|---|
Language | Haskell98 |
- data ProjectionView
- unProjView :: ProjectionView -> Term
- projView :: HasConstInfo m => Term -> m ProjectionView
- reduceProjectionLike :: Term -> TCM Term
- elimView :: Bool -> Term -> TCM Term
- eligibleForProjectionLike :: QName -> TCM Bool
- makeProjection :: QName -> TCM ()
Documentation
data ProjectionView Source #
View for a Def f (Apply a : es)
where isProjection f
.
Used for projection-like f
s.
ProjectionView | A projection or projection-like function, applied to its principal argument |
| |
LoneProjectionLike QName ArgInfo | Just a lone projection-like function, missing its principal argument (from which we could infer the parameters). |
NoProjection Term | Not a projection or projection-like thing. |
unProjView :: ProjectionView -> Term Source #
Semantics of ProjectionView
.
projView :: HasConstInfo m => Term -> m ProjectionView Source #
Top-level ProjectionView
(no reduction).
reduceProjectionLike :: Term -> TCM Term Source #
Reduce away top-level projection like functions. (Also reduces projections, but they should not be there, since Internal is in lambda- and projection-beta-normal form.)
elimView :: Bool -> Term -> TCM Term Source #
Turn prefix projection-like function application into postfix ones.
This does just one layer, such that the top spine contains
the projection-like functions as projections.
Used in compareElims
in TypeChecking.Conversion
and in Agda.TypeChecking.CheckInternal.
If the Bool
is True
, a lone projection like function will be
turned into a lambda-abstraction, expecting the principal argument.
If the Bool
is False
, it will be returned unaltered.
No precondition. Preserves constructorForm, since it really does only something on (applications of) projection-like functions.
eligibleForProjectionLike :: QName -> TCM Bool Source #
Which Def
types are eligible for the principle argument
of a projection-like function?
makeProjection :: QName -> TCM () Source #
Turn a definition into a projection if it looks like a projection.