Control.Lens.Internal.FieldTH

Documentation

data LensRules

Rules to construct lenses for data fields.

Constructors

LensRules

Fields

• _simpleLenses :: Bool
• _generateSigs :: Bool
• _generateClasses :: Bool
• _allowIsos :: Bool
• _allowUpdates :: Bool

  Allow LensTraversal (otherwise GetterFold)

• _lazyPatterns :: Bool
• _fieldToDef :: Name -> [Name] -> Name -> [DefName]

  Type Name -> Field Names -> Target Field Name -> Definition Names

• _classyLenses :: Name -> Maybe (Name, Name)

data DefName

Name to give to generated field optics.

Constructors

TopName Name

Simple top-level definiton name

MethodName Name Name

makeFields-style class name and method name

Instances

Eq DefName

Methods

(==) :: DefName -> DefName -> Bool

(/=) :: DefName -> DefName -> Bool

Ord DefName

Methods

compare :: DefName -> DefName -> Ordering

(<) :: DefName -> DefName -> Bool

(<=) :: DefName -> DefName -> Bool

(>) :: DefName -> DefName -> Bool

(>=) :: DefName -> DefName -> Bool

max :: DefName -> DefName -> DefName

min :: DefName -> DefName -> DefName

Show DefName

Methods

showsPrec :: Int -> DefName -> ShowS

show :: DefName -> String

showList :: [DefName] -> ShowS

makeFieldOptics :: LensRules -> Name -> DecsQ

Compute the field optics for the type identified by the given type name. Lenses will be computed when possible, Traversals otherwise.

makeFieldOpticsForDec :: LensRules -> Dec -> DecsQ