Safe Haskell	None
Language	Haskell2010

Toml.Type.Value

Contents

Synopsis

Type of value

Needed for GADT parameterization

Constructors

Instances

Eq TValue Source #
Methods (==) :: TValue -> TValue -> Bool # (/=) :: TValue -> TValue -> Bool #
Show TValue Source #
Methods showsPrec :: Int -> TValue -> ShowS # show :: TValue -> String # showList :: [TValue] -> ShowS #

Value

data Value (t :: TValue) where Source #

Value in key = value pair.

Constructors

Bool :: Bool -> Value TBool	Boolean value: bool1 = true bool2 = false
Integer :: Integer -> Value TInteger	Integer value: int1 = +99 int2 = 42 int3 = 0 int4 = -17 int5 = 5_349_221 hex1 = 0xDEADBEEF oct2 = 0o755 # useful for Unix file permissions bin1 = 0b11010110
Double :: Double -> Value TDouble	Floating point number: flt1 = -3.1415 # fractional flt2 = 1e6 # exponent flt3 = 6.626e-34 # both flt4 = 9_224_617.445_991_228_313
Text :: Text -> Value TText	String value: key = "value" bare_key = "value" bare-key = "value"
Date :: DateTime -> Value TDate	Date-time. See documentation for `DateTime` type.
Array :: [Value t] -> Value TArray	Array of values. According to TOML specification all values in array should have the same type. This is guaranteed statically with this type. arr1 = [ 1, 2, 3 ] arr2 = [ "red", "yellow", "green" ] arr3 = [ [ 1, 2 ], [3, 4, 5] ] arr4 = [ "all", `strings`, """are the same""", ''`type''`] arr5 = [ [ 1, 2 ], ["a", "b", "c"] ] arr6 = [ 1, 2.0 ] # INVALID

Instances

Eq (Value t) Source #
Methods (==) :: Value t -> Value t -> Bool # (/=) :: Value t -> Value t -> Bool #
(~) TValue t TInteger => Num (Value t) Source #
Methods (+) :: Value t -> Value t -> Value t # (-) :: Value t -> Value t -> Value t # (*) :: Value t -> Value t -> Value t # negate :: Value t -> Value t # abs :: Value t -> Value t # signum :: Value t -> Value t # fromInteger :: Integer -> Value t #
Show (Value t) Source #
Methods showsPrec :: Int -> Value t -> ShowS # show :: Value t -> String # showList :: [Value t] -> ShowS #
(~) TValue t TText => IsString (Value t) Source #
Methods fromString :: String -> Value t #

Constructors

Zoned !ZonedTime	Offset date-time: odt1 = 1979-05-27T07:32:00Z odt2 = 1979-05-27T00:32:00-07:00
Local !LocalTime	Local date-time (without offset): ldt1 = 1979-05-27T07:32:00 ldt2 = 1979-05-27T00:32:00.999999
Day !Day	Local date (only day): ld1 = 1979-05-27
Hours !TimeOfDay	Local time (time of the day): lt1 = 07:32:00 lt2 = 00:32:00.999999

Instances

Eq DateTime Source #
Methods (==) :: DateTime -> DateTime -> Bool # (/=) :: DateTime -> DateTime -> Bool #
Show DateTime Source #
Methods showsPrec :: Int -> DateTime -> ShowS # show :: DateTime -> String # showList :: [DateTime] -> ShowS #

Reifies type of Value into ValueType. Unfortunately, there's no way to guarante that valueType will return t for object with type Value 't.

Data type that holds expected vs. actual type.

Constructors

TypeMismatchError
Fields typeExpected :: TValue typeActual :: TValue

Instances

Eq TypeMismatchError Source #
Methods (==) :: TypeMismatchError -> TypeMismatchError -> Bool # (/=) :: TypeMismatchError -> TypeMismatchError -> Bool #
Show TypeMismatchError Source #
Methods showsPrec :: Int -> TypeMismatchError -> ShowS # show :: TypeMismatchError -> String # showList :: [TypeMismatchError] -> ShowS #