Safe Haskell	None
Language	Haskell2010

Generic.Random.Internal.BaseCase

Description

Base case discovery.

Warning

This is an internal module: it is not subject to any versioning policy, breaking changes can happen at any time.

If something here seems useful, please report it or create a pull request to export it from an external module.

Synopsis

genericArbitrary' :: (GArbitrary SizedOptsDef a, BaseCase a) => Weights a -> Gen a
genericArbitraryU' :: (GArbitrary SizedOptsDef a, BaseCase a, GUniformWeight a) => Gen a
withBaseCase :: Gen a -> Gen a -> Gen a
class BaseCaseSearch (a :: *) (z :: Nat) (y :: Maybe Nat) (e :: *) where
- baseCaseSearch :: prox y -> proxy '(z, e) -> IfM y Gen Proxy a
class BaseCaseSearching_ a z y where
- baseCaseSearching_ :: proxy y -> proxy2 '(z, a) -> IfM y Gen Proxy a -> Gen a
class BaseCaseSearching a z where
- baseCaseSearching :: proxy '(z, a) -> Gen a
class BaseCase a where
- baseCase :: Gen a
type family IfM (b :: Maybe t) (c :: k) (d :: k) :: k
type (==) m n = IsEQ (CmpNat m n)
type family IsEQ (e :: Ordering) :: Bool
type family (b :: Maybe Nat) ||? (c :: Maybe Nat) :: Maybe Nat
type family (b :: Maybe Nat) &&? (c :: Maybe Nat) :: Maybe Nat
type Max m n = MaxOf (CmpNat m n) m n
type family MaxOf (e :: Ordering) (m :: k) (n :: k) :: k
type Min m n = MinOf (CmpNat m n) m n
type family MinOf (e :: Ordering) (m :: k) (n :: k) :: k
class Alternative (IfM y Weighted Proxy) => GBCS (f :: k -> *) (z :: Nat) (y :: Maybe Nat) (e :: *) where
- gbcs :: prox y -> proxy '(z, e) -> IfM y Weighted Proxy (f p)
class Alternative (IfM (yf ||? yg) Weighted Proxy) => GBCSSum f g z e yf yg where
- gbcsSum :: prox '(yf, yg) -> proxy '(z, e) -> IfM yf Weighted Proxy (f p) -> IfM yg Weighted Proxy (g p) -> IfM (yf ||? yg) Weighted Proxy ((f :+: g) p)
class GBCSSumCompare f g z e o where
- gbcsSumCompare :: proxy0 o -> proxy '(z, e) -> Weighted (f p) -> Weighted (g p) -> Weighted ((f :+: g) p)
class Alternative (IfM (yf &&? yg) Weighted Proxy) => GBCSProduct f g z e yf yg where
- gbcsProduct :: prox '(yf, yg) -> proxy '(z, e) -> IfM yf Weighted Proxy (f p) -> IfM yg Weighted Proxy (g p) -> IfM (yf &&? yg) Weighted Proxy ((f :*: g) p)
class IsMaybe b where
- ifMmap :: proxy b -> (c a -> c' a') -> (d a -> d' a') -> IfM b c d a -> IfM b c' d' a'
- ifM :: proxy b -> c a -> d a -> IfM b c d a
class GBaseCaseSearch a z y e where
- gBaseCaseSearch :: prox y -> proxy '(z, e) -> IfM y Gen Proxy a

Documentation

genericArbitrary' Source #

Arguments

:: (GArbitrary SizedOptsDef a, BaseCase a)
=> Weights a	List of weights for every constructor
-> Gen a

Decrease size to ensure termination for recursive types, looking for base cases once the size reaches 0.

genericArbitrary' (17 % 19 % 23 % ()) :: Gen a

N.B.: This replaces the generator for fields of type [t] with listOf' arbitrary instead of listOf arbitrary (i.e., arbitrary for lists).

genericArbitraryU' :: (GArbitrary SizedOptsDef a, BaseCase a, GUniformWeight a) => Gen a Source #

Equivalent to genericArbitrary' uniform.

genericArbitraryU' :: Gen a

N.B.: This replaces the generator for fields of type [t] with listOf' arbitrary instead of listOf arbitrary (i.e., arbitrary for lists).

withBaseCase :: Gen a -> Gen a -> Gen a Source #

Run the first generator if the size is positive. Run the second if the size is zero.

defaultGen `withBaseCase` baseCaseGen

class BaseCaseSearch (a :: *) (z :: Nat) (y :: Maybe Nat) (e :: *) where Source #

Find a base case of type a with maximum depth z, recursively using BaseCaseSearch instances to search deeper levels.

y is the depth of a base case, if found.

e is the original type the search started with, that a appears in. It is used for error reporting.

Methods

baseCaseSearch :: prox y -> proxy '(z, e) -> IfM y Gen Proxy a Source #

Instances

Instances details

y ~ 'Just 0 => BaseCaseSearch Bool z y e Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods baseCaseSearch :: prox y -> proxy '(z, e) -> IfM y Gen Proxy Bool Source #
y ~ 'Just 0 => BaseCaseSearch Char z y e Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods baseCaseSearch :: prox y -> proxy '(z, e) -> IfM y Gen Proxy Char Source #
y ~ 'Just 0 => BaseCaseSearch Double z y e Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods baseCaseSearch :: prox y -> proxy '(z, e) -> IfM y Gen Proxy Double Source #
y ~ 'Just 0 => BaseCaseSearch Float z y e Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods baseCaseSearch :: prox y -> proxy '(z, e) -> IfM y Gen Proxy Float Source #
y ~ 'Just 0 => BaseCaseSearch Int z y e Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods baseCaseSearch :: prox y -> proxy '(z, e) -> IfM y Gen Proxy Int Source #
y ~ 'Just 0 => BaseCaseSearch Integer z y e Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods baseCaseSearch :: prox y -> proxy '(z, e) -> IfM y Gen Proxy Integer Source #
y ~ 'Just 0 => BaseCaseSearch Ordering z y e Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods baseCaseSearch :: prox y -> proxy '(z, e) -> IfM y Gen Proxy Ordering Source #
y ~ 'Just 0 => BaseCaseSearch Word z y e Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods baseCaseSearch :: prox y -> proxy '(z, e) -> IfM y Gen Proxy Word Source #
y ~ 'Just 0 => BaseCaseSearch () z y e Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods baseCaseSearch :: prox y -> proxy '(z, e) -> IfM y Gen Proxy () Source #
GBaseCaseSearch a z y e => BaseCaseSearch a z y e Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods baseCaseSearch :: prox y -> proxy '(z, e) -> IfM y Gen Proxy a Source #
y ~ 'Just 0 => BaseCaseSearch [a] z y e Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods baseCaseSearch :: prox y -> proxy '(z, e) -> IfM y Gen Proxy [a] Source #

class BaseCaseSearching_ a z y where Source #

Methods

baseCaseSearching_ :: proxy y -> proxy2 '(z, a) -> IfM y Gen Proxy a -> Gen a Source #

Instances

Instances details

BaseCaseSearching a (z + 1) => BaseCaseSearching_ a (z :: Nat) ('Nothing :: Maybe t) Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods baseCaseSearching_ :: proxy 'Nothing -> proxy2 '(z, a) -> IfM 'Nothing Gen Proxy a -> Gen a Source #
BaseCaseSearching_ a (z :: k) ('Just m :: Maybe t) Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods baseCaseSearching_ :: proxy ('Just m) -> proxy2 '(z, a) -> IfM ('Just m) Gen Proxy a -> Gen a Source #

class BaseCaseSearching a z where Source #

Progressively increase the depth bound for BaseCaseSearch.

Methods

baseCaseSearching :: proxy '(z, a) -> Gen a Source #

Instances

Instances details

(BaseCaseSearch a z y a, BaseCaseSearching_ a z y) => BaseCaseSearching a (z :: Nat) Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods baseCaseSearching :: proxy '(z, a) -> Gen a Source #

class BaseCase a where Source #

Custom instances can override the default behavior.

Methods

baseCase :: Gen a Source #

Generator of base cases.

Instances

Instances details

BaseCaseSearching a 0 => BaseCase a Source #	Overlappable
Instance details Defined in Generic.Random.Internal.BaseCase Methods baseCase :: Gen a Source #

type family IfM (b :: Maybe t) (c :: k) (d :: k) :: k Source #

Instances

Instances details

type IfM ('Nothing :: Maybe t) (c :: k) (d :: k) Source #
Instance details Defined in Generic.Random.Internal.BaseCase type IfM ('Nothing :: Maybe t) (c :: k) (d :: k) = d
type IfM ('Just t2 :: Maybe t1) (c :: k) (d :: k) Source #
Instance details Defined in Generic.Random.Internal.BaseCase type IfM ('Just t2 :: Maybe t1) (c :: k) (d :: k) = c

type (==) m n = IsEQ (CmpNat m n) Source #

type family IsEQ (e :: Ordering) :: Bool Source #

Instances

Instances details

type IsEQ 'LT Source #
Instance details Defined in Generic.Random.Internal.BaseCase type IsEQ 'LT = 'False
type IsEQ 'EQ Source #
Instance details Defined in Generic.Random.Internal.BaseCase type IsEQ 'EQ = 'True
type IsEQ 'GT Source #
Instance details Defined in Generic.Random.Internal.BaseCase type IsEQ 'GT = 'False

type family (b :: Maybe Nat) ||? (c :: Maybe Nat) :: Maybe Nat Source #

Instances

Instances details

type m \|\|? ('Nothing :: Maybe Nat) Source #
Instance details Defined in Generic.Random.Internal.BaseCase type m \|\|? ('Nothing :: Maybe Nat) = m
type ('Nothing :: Maybe Nat) \|\|? n Source #
Instance details Defined in Generic.Random.Internal.BaseCase type ('Nothing :: Maybe Nat) \|\|? n = n
type ('Just m) \|\|? ('Just n) Source #
Instance details Defined in Generic.Random.Internal.BaseCase type ('Just m) \|\|? ('Just n) = 'Just (Min m n)

type family (b :: Maybe Nat) &&? (c :: Maybe Nat) :: Maybe Nat Source #

Instances

Instances details

type m &&? ('Nothing :: Maybe Nat) Source #
Instance details Defined in Generic.Random.Internal.BaseCase type m &&? ('Nothing :: Maybe Nat) = 'Nothing :: Maybe Nat
type ('Nothing :: Maybe Nat) &&? n Source #
Instance details Defined in Generic.Random.Internal.BaseCase type ('Nothing :: Maybe Nat) &&? n = 'Nothing :: Maybe Nat
type ('Just m) &&? ('Just n) Source #
Instance details Defined in Generic.Random.Internal.BaseCase type ('Just m) &&? ('Just n) = 'Just (Max m n)

type Max m n = MaxOf (CmpNat m n) m n Source #

type family MaxOf (e :: Ordering) (m :: k) (n :: k) :: k Source #

Instances

Instances details

type MaxOf 'LT (m :: k) (n :: k) Source #
Instance details Defined in Generic.Random.Internal.BaseCase type MaxOf 'LT (m :: k) (n :: k) = n
type MaxOf 'EQ (m :: k) (n :: k) Source #
Instance details Defined in Generic.Random.Internal.BaseCase type MaxOf 'EQ (m :: k) (n :: k) = m
type MaxOf 'GT (m :: k) (n :: k) Source #
Instance details Defined in Generic.Random.Internal.BaseCase type MaxOf 'GT (m :: k) (n :: k) = m

type Min m n = MinOf (CmpNat m n) m n Source #

type family MinOf (e :: Ordering) (m :: k) (n :: k) :: k Source #

Instances

Instances details

type MinOf 'LT (m :: k) (n :: k) Source #
Instance details Defined in Generic.Random.Internal.BaseCase type MinOf 'LT (m :: k) (n :: k) = m
type MinOf 'EQ (m :: k) (n :: k) Source #
Instance details Defined in Generic.Random.Internal.BaseCase type MinOf 'EQ (m :: k) (n :: k) = n
type MinOf 'GT (m :: k) (n :: k) Source #
Instance details Defined in Generic.Random.Internal.BaseCase type MinOf 'GT (m :: k) (n :: k) = n

class Alternative (IfM y Weighted Proxy) => GBCS (f :: k -> *) (z :: Nat) (y :: Maybe Nat) (e :: *) where Source #

Methods

gbcs :: prox y -> proxy '(z, e) -> IfM y Weighted Proxy (f p) Source #

Instances

Instances details

(TypeError (((('Text "Unrecognized Rep: " :<>: 'ShowType f) :$$: 'Text "Possible causes:") :$$: (('Text " Missing (" :<>: 'ShowType (BaseCase e)) :<>: 'Text ") constraint")) :$$: 'Text " Missing Generic instance") :: Constraint, Alternative (IfM y Weighted (Proxy :: Type -> Type))) => GBCS (f :: k -> Type) z y e Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods gbcs :: forall prox proxy (p :: k0). prox y -> proxy '(z, e) -> IfM y Weighted Proxy (f p) Source #
y ~ 'Just 0 => GBCS (U1 :: k -> Type) z y e Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods gbcs :: forall prox proxy (p :: k0). prox y -> proxy '(z, e) -> IfM y Weighted Proxy (U1 p) Source #
y ~ ('Nothing :: Maybe Nat) => GBCS (K1 i c :: k -> Type) 0 y e Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods gbcs :: forall prox proxy (p :: k0). prox y -> proxy '(0, e) -> IfM y Weighted Proxy (K1 i c p) Source #
(GBCSSum f g z e yf yg, GBCS f z yf e, GBCS g z yg e, y ~ (yf \|\|? yg)) => GBCS (f :+: g :: k -> Type) z y e Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods gbcs :: forall prox proxy (p :: k0). prox y -> proxy '(z, e) -> IfM y Weighted Proxy ((f :+: g) p) Source #
(GBCSProduct f g z e yf yg, GBCS f z yf e, GBCS g z yg e, y ~ (yf &&? yg)) => GBCS (f :*: g :: k -> Type) z y e Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods gbcs :: forall prox proxy (p :: k0). prox y -> proxy '(z, e) -> IfM y Weighted Proxy ((f :*: g) p) Source #
(BaseCaseSearch c (z - 1) y e, (z == 0) ~ 'False, Alternative (IfM y Weighted (Proxy :: Type -> Type)), IsMaybe y) => GBCS (K1 i c :: k -> Type) z y e Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods gbcs :: forall prox proxy (p :: k0). prox y -> proxy '(z, e) -> IfM y Weighted Proxy (K1 i c p) Source #
GBCS f z y e => GBCS (M1 i c f :: k -> Type) z y e Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods gbcs :: forall prox proxy (p :: k0). prox y -> proxy '(z, e) -> IfM y Weighted Proxy (M1 i c f p) Source #

class Alternative (IfM (yf ||? yg) Weighted Proxy) => GBCSSum f g z e yf yg where Source #

Methods

gbcsSum :: prox '(yf, yg) -> proxy '(z, e) -> IfM yf Weighted Proxy (f p) -> IfM yg Weighted Proxy (g p) -> IfM (yf ||? yg) Weighted Proxy ((f :+: g) p) Source #

Instances

Instances details

GBCSSum (f :: k1 -> Type) (g :: k1 -> Type) (z :: k2) (e :: k3) ('Nothing :: Maybe Nat) ('Nothing :: Maybe Nat) Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods gbcsSum :: forall prox proxy (p :: k). prox '('Nothing, 'Nothing) -> proxy '(z, e) -> IfM 'Nothing Weighted Proxy (f p) -> IfM 'Nothing Weighted Proxy (g p) -> IfM ('Nothing \|\|? 'Nothing) Weighted Proxy ((f :+: g) p) Source #
GBCSSum (f :: k1 -> Type) (g :: k1 -> Type) (z :: k2) (e :: k3) ('Nothing :: Maybe Nat) ('Just n) Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods gbcsSum :: forall prox proxy (p :: k). prox '('Nothing, 'Just n) -> proxy '(z, e) -> IfM 'Nothing Weighted Proxy (f p) -> IfM ('Just n) Weighted Proxy (g p) -> IfM ('Nothing \|\|? 'Just n) Weighted Proxy ((f :+: g) p) Source #
GBCSSum (f :: k1 -> Type) (g :: k1 -> Type) (z :: k2) (e :: k3) ('Just m) ('Nothing :: Maybe Nat) Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods gbcsSum :: forall prox proxy (p :: k). prox '('Just m, 'Nothing) -> proxy '(z, e) -> IfM ('Just m) Weighted Proxy (f p) -> IfM 'Nothing Weighted Proxy (g p) -> IfM ('Just m \|\|? 'Nothing) Weighted Proxy ((f :+: g) p) Source #
GBCSSumCompare f g z e (CmpNat m n) => GBCSSum (f :: k1 -> Type) (g :: k1 -> Type) (z :: k2) (e :: k3) ('Just m) ('Just n) Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods gbcsSum :: forall prox proxy (p :: k). prox '('Just m, 'Just n) -> proxy '(z, e) -> IfM ('Just m) Weighted Proxy (f p) -> IfM ('Just n) Weighted Proxy (g p) -> IfM ('Just m \|\|? 'Just n) Weighted Proxy ((f :+: g) p) Source #

class GBCSSumCompare f g z e o where Source #

Methods

gbcsSumCompare :: proxy0 o -> proxy '(z, e) -> Weighted (f p) -> Weighted (g p) -> Weighted ((f :+: g) p) Source #

Instances

Instances details

GBCSSumCompare (f :: k1 -> Type) (g :: k1 -> Type) (z :: k2) (e :: k3) 'GT Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods gbcsSumCompare :: forall proxy0 proxy (p :: k). proxy0 'GT -> proxy '(z, e) -> Weighted (f p) -> Weighted (g p) -> Weighted ((f :+: g) p) Source #
GBCSSumCompare (f :: k1 -> Type) (g :: k1 -> Type) (z :: k2) (e :: k3) 'LT Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods gbcsSumCompare :: forall proxy0 proxy (p :: k). proxy0 'LT -> proxy '(z, e) -> Weighted (f p) -> Weighted (g p) -> Weighted ((f :+: g) p) Source #
GBCSSumCompare (f :: k1 -> Type) (g :: k1 -> Type) (z :: k2) (e :: k3) 'EQ Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods gbcsSumCompare :: forall proxy0 proxy (p :: k). proxy0 'EQ -> proxy '(z, e) -> Weighted (f p) -> Weighted (g p) -> Weighted ((f :+: g) p) Source #

class Alternative (IfM (yf &&? yg) Weighted Proxy) => GBCSProduct f g z e yf yg where Source #

Methods

gbcsProduct :: prox '(yf, yg) -> proxy '(z, e) -> IfM yf Weighted Proxy (f p) -> IfM yg Weighted Proxy (g p) -> IfM (yf &&? yg) Weighted Proxy ((f :*: g) p) Source #

Instances

Instances details

(yf &&? yg) ~ ('Nothing :: Maybe Nat) => GBCSProduct (f :: k1 -> Type) (g :: k1 -> Type) (z :: k2) (e :: k3) yf yg Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods gbcsProduct :: forall prox proxy (p :: k). prox '(yf, yg) -> proxy '(z, e) -> IfM yf Weighted Proxy (f p) -> IfM yg Weighted Proxy (g p) -> IfM (yf &&? yg) Weighted Proxy ((f :*: g) p) Source #
GBCSProduct (f :: k1 -> Type) (g :: k1 -> Type) (z :: k2) (e :: k3) ('Just m) ('Just n) Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods gbcsProduct :: forall prox proxy (p :: k). prox '('Just m, 'Just n) -> proxy '(z, e) -> IfM ('Just m) Weighted Proxy (f p) -> IfM ('Just n) Weighted Proxy (g p) -> IfM ('Just m &&? 'Just n) Weighted Proxy ((f :*: g) p) Source #

class IsMaybe b where Source #

Methods

ifMmap :: proxy b -> (c a -> c' a') -> (d a -> d' a') -> IfM b c d a -> IfM b c' d' a' Source #

ifM :: proxy b -> c a -> d a -> IfM b c d a Source #

Instances

Instances details

IsMaybe ('Nothing :: Maybe t) Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods ifMmap :: forall k k proxy c (a :: k) c' (a' :: k) d d'. proxy 'Nothing -> (c a -> c' a') -> (d a -> d' a') -> IfM 'Nothing c d a -> IfM 'Nothing c' d' a' Source # ifM :: forall k proxy c (a :: k) d. proxy 'Nothing -> c a -> d a -> IfM 'Nothing c d a Source #
IsMaybe ('Just t2 :: Maybe t1) Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods ifMmap :: forall k k proxy c (a :: k) c' (a' :: k) d d'. proxy ('Just t2) -> (c a -> c' a') -> (d a -> d' a') -> IfM ('Just t2) c d a -> IfM ('Just t2) c' d' a' Source # ifM :: forall k proxy c (a :: k) d. proxy ('Just t2) -> c a -> d a -> IfM ('Just t2) c d a Source #

class GBaseCaseSearch a z y e where Source #

Methods

gBaseCaseSearch :: prox y -> proxy '(z, e) -> IfM y Gen Proxy a Source #

Instances

Instances details

(Generic a, GBCS (Rep a) z y e, IsMaybe y) => GBaseCaseSearch a (z :: Nat) (y :: Maybe Nat) (e :: Type) Source #
Instance details Defined in Generic.Random.Internal.BaseCase Methods gBaseCaseSearch :: prox y -> proxy '(z, e) -> IfM y Gen Proxy a Source #

type m \|\|? ('Nothing :: Maybe Nat) Source #
Instance details Defined in Generic.Random.Internal.BaseCase type m \|\|? ('Nothing :: Maybe Nat) = m
type ('Nothing :: Maybe Nat) \|\|? n Source #
Instance details Defined in Generic.Random.Internal.BaseCase type ('Nothing :: Maybe Nat) \|\|? n = n
type ('Just m) \|\|? ('Just n) Source #
Instance details Defined in Generic.Random.Internal.BaseCase type ('Just m) \|\|? ('Just n) = 'Just (Min m n)