Safe Haskell	Safe
Language	Haskell2010

Cryptol.Utils.Patterns

Synopsis

newtype Match b = Match (forall r. r -> (b -> r) -> r)
type Pat a b = a -> Match b
(|||) :: Pat a b -> Pat a b -> Pat a b
(&&&) :: Pat a b -> Pat a c -> Pat a (b, c)
(~>) :: Pat a b -> (b -> c) -> Pat a c
(~~>) :: Pat a b -> c -> Pat a c
(<~) :: (a -> b) -> Pat b c -> Pat a c
__ :: Pat a a
succeed :: a -> Pat x a
checkThat :: (a -> Bool) -> Pat a ()
lit :: Eq a => a -> Pat a ()
matchDefault :: a -> Match a -> a
match :: Match a -> a
matchMaybe :: Match a -> Maybe a
list :: [Pat a b] -> Pat [a] [b]
(><) :: Pat a b -> Pat x y -> Pat (a, x) (b, y)
class Matches thing pats res | pats -> thing res where
- matches :: thing -> pats -> Match res

Documentation

Constructors

Match (forall r. r -> (b -> r) -> r)

Instances

Monad Match Source #
Instance details Defined in Cryptol.Utils.Patterns Methods (>>=) :: Match a -> (a -> Match b) -> Match b # (>>) :: Match a -> Match b -> Match b # return :: a -> Match a # fail :: String -> Match a #
Functor Match Source #
Instance details Defined in Cryptol.Utils.Patterns Methods fmap :: (a -> b) -> Match a -> Match b # (<$) :: a -> Match b -> Match a #
Applicative Match Source #
Instance details Defined in Cryptol.Utils.Patterns Methods pure :: a -> Match a # (<>) :: Match (a -> b) -> Match a -> Match b # liftA2 :: (a -> b -> c) -> Match a -> Match b -> Match c # (>) :: Match a -> Match b -> Match b # (<*) :: Match a -> Match b -> Match a #
Alternative Match Source #
Instance details Defined in Cryptol.Utils.Patterns Methods empty :: Match a # (<\|>) :: Match a -> Match a -> Match a # some :: Match a -> Match [a] # many :: Match a -> Match [a] #
MonadPlus Match Source #
Instance details Defined in Cryptol.Utils.Patterns Methods mzero :: Match a # mplus :: Match a -> Match a -> Match a #

type Pat a b = a -> Match b Source #

(|||) :: Pat a b -> Pat a b -> Pat a b Source #

(&&&) :: Pat a b -> Pat a c -> Pat a (b, c) Source #

Check that a value satisfies multiple patterns. For example, an "as" pattern is (__ &&& p).

(~>) :: Pat a b -> (b -> c) -> Pat a c Source #

Match a value, and modify the result.

(~~>) :: Pat a b -> c -> Pat a c Source #

Match a value, and return the given result

(<~) :: (a -> b) -> Pat b c -> Pat a c Source #

View pattern.

Variable pattern.

Constant pattern.

Predicate pattern

lit :: Eq a => a -> Pat a () Source #

Check for exact value.

Match a pattern, using the given default if valure.

Match an irrefutable pattern. Crashes on faliure.

list :: [Pat a b] -> Pat [a] [b] Source #

(><) :: Pat a b -> Pat x y -> Pat (a, x) (b, y) Source #

class Matches thing pats res | pats -> thing res where Source #

Methods

matches :: thing -> pats -> Match res Source #

Instances

(f ~ Pat a a1', a1 ~ Pat a1' r1) => Matches a (f, a1) r1 Source #
Instance details Defined in Cryptol.Utils.Patterns Methods matches :: a -> (f, a1) -> Match r1 Source #
(op ~ Pat a (a1', a2'), a1 ~ Pat a1' r1, a2 ~ Pat a2' r2) => Matches a (op, a1, a2) (r1, r2) Source #
Instance details Defined in Cryptol.Utils.Patterns Methods matches :: a -> (op, a1, a2) -> Match (r1, r2) Source #
(op ~ Pat a (a1', a2', a3'), a1 ~ Pat a1' r1, a2 ~ Pat a2' r2, a3 ~ Pat a3' r3) => Matches a (op, a1, a2, a3) (r1, r2, r3) Source #
Instance details Defined in Cryptol.Utils.Patterns Methods matches :: a -> (op, a1, a2, a3) -> Match (r1, r2, r3) Source #