Copyright	(C) 2013-2016 University of Twente 2017-2019 Myrtle Software Ltd Google Inc. 2019 QBayLogic B.V.
License	BSD2 (see the file LICENSE)
Maintainer	Christiaan Baaij <christiaan.baaij@gmail.com>
Safe Haskell	Trustworthy
Language	Haskell2010
Extensions	Cpp MonoLocalBinds TemplateHaskell TemplateHaskellQuotes ScopedTypeVariables BangPatterns TypeFamilies TypeFamilyDependencies ViewPatterns DataKinds InstanceSigs StandaloneDeriving DeriveDataTypeable DeriveFunctor DeriveTraversable DeriveFoldable DeriveGeneric DefaultSignatures DeriveLift DerivingStrategies MagicHash KindSignatures TupleSections TypeOperators ExplicitNamespaces ExplicitForAll BinaryLiterals TypeApplications

Clash.Signal.Bundle

Contents

Tools to emulate pre Clash 1.0 Bundle () instance
Internal

Description

The Product/Signal isomorphism

Synopsis

class Bundle a where
- type Unbundled (dom :: Domain) a = res | res -> dom a
- bundle :: Unbundled dom a -> Signal dom a
- unbundle :: Signal dom a -> Unbundled dom a
data EmptyTuple = EmptyTuple
data TaggedEmptyTuple (dom :: Domain) = TaggedEmptyTuple
vecBundle# :: Vec n (Signal t a) -> Signal t (Vec n a)

Documentation

class Bundle a where Source #

Isomorphism between a Signal of a product type (e.g. a tuple) and a product type of Signals.

Instances of Bundle must satisfy the following laws:

bundle . unbundle = id
unbundle . bundle = id

By default, bundle and unbundle, are defined as the identity, that is, writing:

data D = A | B

instance Bundle D

is the same as:

data D = A | B

instance Bundle D where
  type Unbundled clk D = Signal clk D
  bundle   s = s
  unbundle s = s

For custom product types you'll have to write the instance manually:

data Pair a b = MkPair { getA :: a, getB :: b }

instance Bundle (Pair a b) where
  type Unbundled dom (Pair a b) = Pair (Signal dom a) (Signal dom b)

  -- bundle :: Pair (Signal dom a) (Signal dom b) -> Signal dom (Pair a b)
  bundle   (MkPair as bs) = MkPair $ as * bs

  -- unbundle :: Signal dom (Pair a b) -> Pair (Signal dom a) (Signal dom b)
  unbundle pairs = MkPair (getA $ pairs) (getB $ pairs)

Minimal complete definition

Nothing

Associated Types

type Unbundled (dom :: Domain) a = res | res -> dom a Source #

type Unbundled dom a = Signal dom a

Methods

bundle :: Unbundled dom a -> Signal dom a Source #

Example:

bundle :: (Signal dom a, Signal dom b) -> Signal dom (a,b)

However:

bundle :: Signal dom Bit -> Signal dom Bit

default bundle :: Signal dom a ~ Unbundled dom a => Unbundled dom a -> Signal dom a Source #

unbundle :: Signal dom a -> Unbundled dom a Source #

Example:

unbundle :: Signal dom (a,b) -> (Signal dom a, Signal dom b)

However:

unbundle :: Signal dom Bit -> Signal dom Bit

default unbundle :: Unbundled dom a ~ Signal dom a => Signal dom a -> Unbundled dom a Source #

Instances

Instances details

Bundle Bool Source #
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom Bool = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom Bool -> Signal dom Bool Source # unbundle :: forall (dom :: Domain). Signal dom Bool -> Unbundled dom Bool Source #
Bundle Double Source #
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom Double = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom Double -> Signal dom Double Source # unbundle :: forall (dom :: Domain). Signal dom Double -> Unbundled dom Double Source #
Bundle Float Source #
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom Float = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom Float -> Signal dom Float Source # unbundle :: forall (dom :: Domain). Signal dom Float -> Unbundled dom Float Source #
Bundle Int Source #
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom Int = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom Int -> Signal dom Int Source # unbundle :: forall (dom :: Domain). Signal dom Int -> Unbundled dom Int Source #
Bundle Integer Source #
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom Integer = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom Integer -> Signal dom Integer Source # unbundle :: forall (dom :: Domain). Signal dom Integer -> Unbundled dom Integer Source #
Bundle () Source #
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom () = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom () -> Signal dom () Source # unbundle :: forall (dom :: Domain). Signal dom () -> Unbundled dom () Source #
Bundle Bit Source #
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom Bit = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom Bit -> Signal dom Bit Source # unbundle :: forall (dom :: Domain). Signal dom Bit -> Unbundled dom Bit Source #
Bundle EmptyTuple Source #	See commit 94b0bff5 and documentation for `TaggedEmptyTuple`.
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom EmptyTuple = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom EmptyTuple -> Signal dom EmptyTuple Source # unbundle :: forall (dom :: Domain). Signal dom EmptyTuple -> Unbundled dom EmptyTuple Source #
Bundle (Maybe a) Source #
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom (Maybe a) = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom (Maybe a) -> Signal dom (Maybe a) Source # unbundle :: forall (dom :: Domain). Signal dom (Maybe a) -> Unbundled dom (Maybe a) Source #
Bundle (BitVector n) Source #
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom (BitVector n) = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom (BitVector n) -> Signal dom (BitVector n) Source # unbundle :: forall (dom :: Domain). Signal dom (BitVector n) -> Unbundled dom (BitVector n) Source #
Bundle (Index n) Source #
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom (Index n) = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom (Index n) -> Signal dom (Index n) Source # unbundle :: forall (dom :: Domain). Signal dom (Index n) -> Unbundled dom (Index n) Source #
Bundle (Unsigned n) Source #
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom (Unsigned n) = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom (Unsigned n) -> Signal dom (Unsigned n) Source # unbundle :: forall (dom :: Domain). Signal dom (Unsigned n) -> Unbundled dom (Unsigned n) Source #
Bundle (Signed n) Source #
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom (Signed n) = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom (Signed n) -> Signal dom (Signed n) Source # unbundle :: forall (dom :: Domain). Signal dom (Signed n) -> Unbundled dom (Signed n) Source #
Bundle (Either a b) Source #
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom (Either a b) = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom (Either a b) -> Signal dom (Either a b) Source # unbundle :: forall (dom :: Domain). Signal dom (Either a b) -> Unbundled dom (Either a b) Source #
Bundle (a1, a2) Source #
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom (a1, a2) = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom (a1, a2) -> Signal dom (a1, a2) Source # unbundle :: forall (dom :: Domain). Signal dom (a1, a2) -> Unbundled dom (a1, a2) Source #
KnownNat n => Bundle (Vec n a) Source #
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom (Vec n a) = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom (Vec n a) -> Signal dom (Vec n a) Source # unbundle :: forall (dom :: Domain). Signal dom (Vec n a) -> Unbundled dom (Vec n a) Source #
KnownNat d => Bundle (RTree d a) Source #
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom (RTree d a) = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom (RTree d a) -> Signal dom (RTree d a) Source # unbundle :: forall (dom :: Domain). Signal dom (RTree d a) -> Unbundled dom (RTree d a) Source #
Bundle (a1, a2, a3) Source #	N.B.: The documentation only shows instances up to 3-tuples. By default, instances up to and including 12-tuples will exist. If the flag `large-tuples` is set instances up to the GHC imposed limit will exist. The GHC imposed limit is either 62 or 64 depending on the GHC version.
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom (a1, a2, a3) = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom (a1, a2, a3) -> Signal dom (a1, a2, a3) Source # unbundle :: forall (dom :: Domain). Signal dom (a1, a2, a3) -> Unbundled dom (a1, a2, a3) Source #
Bundle (Fixed rep int frac) Source #
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom (Fixed rep int frac) = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom (Fixed rep int frac) -> Signal dom (Fixed rep int frac) Source # unbundle :: forall (dom :: Domain). Signal dom (Fixed rep int frac) -> Unbundled dom (Fixed rep int frac) Source #
Bundle ((f :*: g) a) Source #
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom ((f :: g) a) = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom ((f :: g) a) -> Signal dom ((f :: g) a) Source # unbundle :: forall (dom :: Domain). Signal dom ((f :: g) a) -> Unbundled dom ((f :*: g) a) Source #

Tools to emulate pre Clash 1.0 `Bundle ()` instance

data EmptyTuple Source #

See TaggedEmptyTuple

Constructors

EmptyTuple

Instances

Instances details

Bundle EmptyTuple Source #	See commit 94b0bff5 and documentation for `TaggedEmptyTuple`.
Instance details Defined in Clash.Signal.Bundle Associated Types type Unbundled dom EmptyTuple = (res :: Type) Source # Methods bundle :: forall (dom :: Domain). Unbundled dom EmptyTuple -> Signal dom EmptyTuple Source # unbundle :: forall (dom :: Domain). Signal dom EmptyTuple -> Unbundled dom EmptyTuple Source #
Bundle EmptyTuple Source #	See commit 94b0bff5 and documentation for `TaggedEmptyTuple`.
Instance details Defined in Clash.Signal.Delayed.Bundle Associated Types type Unbundled dom d EmptyTuple = (res :: Type) Source # Methods bundle :: forall (dom :: Domain) (d :: Nat). Unbundled dom d EmptyTuple -> DSignal dom d EmptyTuple Source # unbundle :: forall (dom :: Domain) (d :: Nat). DSignal dom d EmptyTuple -> Unbundled dom d EmptyTuple Source #
type Unbundled dom EmptyTuple Source #
Instance details Defined in Clash.Signal.Bundle type Unbundled dom EmptyTuple = TaggedEmptyTuple dom
type Unbundled dom d EmptyTuple Source #
Instance details Defined in Clash.Signal.Delayed.Bundle type Unbundled dom d EmptyTuple = TaggedEmptyTuple dom d

data TaggedEmptyTuple (dom :: Domain) Source #

Helper type to emulate the "old" behavior of Bundle's unit instance. I.e., the instance for Bundle () used to be defined as:

class Bundle () where
  bundle   :: () -> Signal dom ()
  unbundle :: Signal dom () -> ()

In order to have sensible type inference, the Bundle class specifies that the argument type of bundle should uniquely identify the result type, and vice versa for unbundle. The type signatures in the snippet above don't though, as () doesn't uniquely map to a specific domain. In other words, domain should occur in both the argument and result of both functions.

TaggedEmptyTuple tackles this by carrying the domain in its type. The bundle and unbundle instance now looks like:

class Bundle EmptyTuple where
  bundle   :: TaggedEmptyTuple dom -> Signal dom EmptyTuple
  unbundle :: Signal dom EmptyTuple -> TaggedEmptyTuple dom

dom is now mentioned both the argument and result for both bundle and unbundle.

Constructors

TaggedEmptyTuple

Internal

vecBundle# :: Vec n (Signal t a) -> Signal t (Vec n a) Source #

Documentation

Instances

Tools to emulate pre Clash 1.0 Bundle () instance

Instances

Internal

Tools to emulate pre Clash 1.0 `Bundle ()` instance