Copyright	(c) 2018-2020 Kowainik
License	MPL-2.0
Maintainer	Kowainik <xrom.xkov@gmail.com>
Safe Haskell	None
Language	Haskell2010

Toml.Codec.Combinator.Set

Contents

Array sets
Table Sets

Description

TOML-specific combinators for converting between TOML and Haskell Set-like data types.

There are two way to represent list-like structures with the tomland library.

Ordinary array sets of primitives:
```
foo = [100, 200, 300]
```

Sets via tables:

foo =
    [ {x = 100}
    , {x = 200}
    , {x = 300}
    ]

OR

[[foo]]
    x = 100
[[foo]]
    x = 200
[[foo]]
    x = 300

You can find both types of the codecs in this module for different set-like structures. See the following table for the better understanding:

Haskell Type	`TOML`	`TomlCodec`
`Set Text`	`a = ["foo", "bar", "baz"]`	`arraySetOf _Text "a"`
`IntSet`	`a = [11, 42]`	`arrayIntSet "a"`
`HashSet Text`	`a = ["foo", "bar"]`	`arrayHashSetOf _Text "a"`
`Set Text`	`x = [{a = "foo"}, {a = "bar"}]`	`set (text "a") "x"`
`HashSet Text`	`x = [{a = "foo"}, {a = "bar"}]`	`hashSet (text "a") "x"`

Since: 1.3.0.0

Synopsis

arraySetOf :: Ord a => TomlBiMap a AnyValue -> Key -> TomlCodec (Set a)
arrayIntSet :: Key -> TomlCodec IntSet
arrayHashSetOf :: (Hashable a, Eq a) => TomlBiMap a AnyValue -> Key -> TomlCodec (HashSet a)
set :: forall a. Ord a => TomlCodec a -> Key -> TomlCodec (Set a)
intSet :: TomlCodec Int -> Key -> TomlCodec IntSet
hashSet :: forall a. (Hashable a, Eq a) => TomlCodec a -> Key -> TomlCodec (HashSet a)

Array sets

arraySetOf :: Ord a => TomlBiMap a AnyValue -> Key -> TomlCodec (Set a) Source #

Codec for sets. Takes converter for single value and returns a set of values.

Example:

Haskell Set Int can look like this in your TOML file:

foo = [1, 2, 3]

In case of the missing field, the following error will be seen:

tomland decode error:  Key foo is not found

Since: 0.5.0

arrayIntSet :: Key -> TomlCodec IntSet Source #

Codec for sets of ints. Takes converter for single value and returns a set of ints.

Example:

Haskell IntSet can look like this in your TOML file:

foo = [1, 2, 3]

In case of the missing field, the following error will be seen:

tomland decode error:  Key foo is not found

Since: 0.5.0

arrayHashSetOf :: (Hashable a, Eq a) => TomlBiMap a AnyValue -> Key -> TomlCodec (HashSet a) Source #

Codec for hash sets. Takes converter for single hashable value and returns a set of hashable values.

Example:

Haskell HashSet Int can look like this in your TOML file:

foo = [1, 2, 3]

In case of the missing field, the following error will be seen:

tomland decode error:  Key foo is not found

Since: 0.5.0

Table Sets

set :: forall a. Ord a => TomlCodec a -> Key -> TomlCodec (Set a) Source #

Codec for set of values. Represented in TOML as array of tables.

Example:

Haskell Set Int can look like this in your TOML file:

foo =
  [ {a = 1}
  , {a = 2}
  ]

Decodes to an empty Set in case of the missing field in TOML.

Since: 1.2.0.0

intSet :: TomlCodec Int -> Key -> TomlCodec IntSet Source #

Codec for IntSet. Represented in TOML as an array of tables.

Example:

Haskell IntSet can look like this in your TOML file:

foo =
  [ {a = 1}
  , {a = 2}
  ]

Decodes to an empty IntSet in case of the missing field in TOML.

Since: 1.3.0.0

hashSet :: forall a. (Hashable a, Eq a) => TomlCodec a -> Key -> TomlCodec (HashSet a) Source #

Codec for HashSet of values. Represented in TOML as an array of tables.

Example:

Haskell HashSet Int can look like this in your TOML file:

foo =
  [ {a = 1}
  , {a = 2}
  ]

Decodes to an empty HashSet in case of the missing field in TOML.

Since: 1.2.0.0