| Safe Haskell | Safe |
|---|---|
| Language | Haskell98 |
Options.Applicative.Builder.Internal
Contents
- data Mod f a = Mod (f a -> f a) (DefaultProp a) (OptProperties -> OptProperties)
- class HasName f where
- class HasCompleter f where
- modCompleter :: (Completer -> Completer) -> f a -> f a
- class HasValue f
- class HasMetavar f
- data OptionFields a = OptionFields {}
- data FlagFields a = FlagFields {
- flagNames :: [OptName]
- flagActive :: a
- data CommandFields a = CommandFields {
- cmdCommands :: [(String, ParserInfo a)]
- data ArgumentFields a = ArgumentFields {}
- data DefaultProp a = DefaultProp (Maybe a) (Maybe (a -> String))
- optionMod :: (OptProperties -> OptProperties) -> Mod f a
- fieldMod :: (f a -> f a) -> Mod f a
- baseProps :: OptProperties
- mkCommand :: Mod CommandFields a -> ([String], String -> Maybe (ParserInfo a))
- mkParser :: DefaultProp a -> (OptProperties -> OptProperties) -> OptReader a -> Parser a
- mkOption :: DefaultProp a -> (OptProperties -> OptProperties) -> OptReader a -> Option a
- mkProps :: DefaultProp a -> (OptProperties -> OptProperties) -> OptProperties
- internal :: Mod f a
Internals
data Mod f a
An option modifier.
Option modifiers are values that represent a modification of the properties of an option.
The type parameter a is the return type of the option, while f is a
record containing its properties (e.g. OptionFields for regular options,
FlagFields for flags, etc...).
An option modifier consists of 3 elements:
- A field modifier, of the form
f a -> f a. These are essentially (compositions of) setters for some of the properties supported byf. - An optional default value and function to display it.
- A property modifier, of the form
OptProperties -> OptProperties. This is just like the field modifier, but for properties applicable to any option.
Modifiers are instances of Monoid, and can be composed as such.
You rarely need to deal with modifiers directly, as most of the times it is
sufficient to pass them to builders (such as strOption or flag) to
create options (see Builder).
Constructors
| Mod (f a -> f a) (DefaultProp a) (OptProperties -> OptProperties) |
class HasName f where
Instances
class HasCompleter f where
Methods
modCompleter :: (Completer -> Completer) -> f a -> f a
class HasMetavar f
Minimal complete definition
hasMetavarDummy
data OptionFields a
Constructors
| OptionFields | |
Fields
| |
data CommandFields a
Constructors
| CommandFields | |
Fields
| |
Instances
data ArgumentFields a
Constructors
| ArgumentFields | |
Fields | |
data DefaultProp a
Constructors
| DefaultProp (Maybe a) (Maybe (a -> String)) |
Instances
| Monoid (DefaultProp a) |
optionMod :: (OptProperties -> OptProperties) -> Mod f a
Base default properties.
mkCommand :: Mod CommandFields a -> ([String], String -> Maybe (ParserInfo a))
mkParser :: DefaultProp a -> (OptProperties -> OptProperties) -> OptReader a -> Parser a
mkOption :: DefaultProp a -> (OptProperties -> OptProperties) -> OptReader a -> Option a
mkProps :: DefaultProp a -> (OptProperties -> OptProperties) -> OptProperties