Text.XML.Selectors.Types

Documentation

data Selector

Node-level selectors and combinators

Constructors

None

Any

*

Append Selector Selector

ab (both a and b must match)

Elem Name

div

Attrib AttribSelector

a[...]

Descendant

(whitespace)

Child

>

Sibling

~

NextSibling

+

FirstChild

:first-child

LastChild

:last-child

NthChild Int

:nth-child(n); :nth-last-child(-n)

Choice [Selector]

a,b,...

Having Selector

:has(b)

Not Selector

:not(b)

Instances

Show Selector

Defined in Text.XML.Selectors.Types

Methods

showsPrec :: Int -> Selector -> ShowS

show :: Selector -> String

showList :: [Selector] -> ShowS

Semigroup Selector

The Semigroup of selectors combines selectors with Append. a <> b selects all nodes that match a and also match b. Note however that the <> operator culls redundant combinations with the Any selector, e.g. Any <> Child <> Any is just Child, not Append Any (Append Child Any).

Defined in Text.XML.Selectors.Types

Methods

(<>) :: Selector -> Selector -> Selector

sconcat :: NonEmpty Selector -> Selector

stimes :: Integral b => b -> Selector -> Selector

Monoid Selector

The Monoid instance, just like Semigroup, combines selectors with Append; the neutral value is, of course, Any.

Defined in Text.XML.Selectors.Types

Methods

mempty :: Selector

mappend :: Selector -> Selector -> Selector

mconcat :: [Selector] -> Selector

selectorAppend :: Selector -> Selector -> Selector

(<||>) :: Selector -> Selector -> Selector infixl 3

An alternative semigroup of selectors, representing choice. a <||> b selects all nodes that match a and also all nodes that match b. In other words: a <||> b == Choice a b. Note however that the <||> operator culls redundant applications of Choice, e.g., a <||> b <||> c becomes Choice [a, b, c] rather than Choice [a, Choice [b, c]]. This alternative semigroup could be extended into a monoid, with the empty choice (Choice []) as the neutral value, but we were far too lazy to add that.

data AttribSelector

Attribute-level selectors

Constructors

AttribExists Name

[attr]

AttribIs Name Text

[attr=blah]

AttribIsNot Name Text

[attr!=blah]

AttribStartsWith Name Text

[attr^=blah]

AttribEndsWith Name Text

[attr$=blah]

AttribContains Name Text

[attr*=blah]

AttribContainsWord Name Text

[attr~=blah]

AttribContainsPrefix Name Text

[attr|=blah]

Instances

Eq AttribSelector

Defined in Text.XML.Selectors.Types

Methods

(==) :: AttribSelector -> AttribSelector -> Bool

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

Show AttribSelector

Defined in Text.XML.Selectors.Types

Methods

showsPrec :: Int -> AttribSelector -> ShowS

show :: AttribSelector -> String

showList :: [AttribSelector] -> ShowS