Enum Pattern 

pub enum Pattern {
    Empty,
    NotAllowed,
    Text,
    Value {
        datatype: String,
        text: String,
    },
    Data {
        datatype: String,
        params: Vec<(String, String)>,
    },
    List(Arc<Pattern>),
    Element {
        name: NameClass,
        child: Arc<Pattern>,
    },
    Attribute {
        name: NameClass,
        child: Arc<Pattern>,
    },
    Group(Arc<Pattern>, Arc<Pattern>),
    Interleave(Arc<Pattern>, Arc<Pattern>),
    Choice(Arc<Pattern>, Arc<Pattern>),
    OneOrMore(Arc<Pattern>),
    Ref(String),
    After(Arc<Pattern>, Arc<Pattern>),
}

A RelaxNG pattern. See module docs for what’s supported.

Patterns are wrapped in Arc so derivative-style transformations can share subtrees cheaply across alternatives.

Variants

Empty

<empty/> — matches the empty content sequence.

NotAllowed

<notAllowed/> — matches nothing.

Text

<text/> — matches any sequence of text.

Value

<value type=...>X</value> — text content must equal X after whitespace normalisation per the datatype.

Fields

datatype: String

text: String

Data

<data type="..."><param name=...>...</param>...</data> — text content must validate against the named datatype.

Fields

datatype: String

params: Vec<(String, String)>

List(Arc<Pattern>)

<list> — whitespace-tokenize the text, match each token against the inner pattern.

Element

<element name="X">child</element>.

Fields

name: NameClass

child: Arc<Pattern>

Attribute

<attribute name="X">child</attribute>.

Fields

name: NameClass

child: Arc<Pattern>

Group(Arc<Pattern>, Arc<Pattern>)

<group> — sequential composition.

Interleave(Arc<Pattern>, Arc<Pattern>)

<interleave> — both patterns must match, in any order.

Choice(Arc<Pattern>, Arc<Pattern>)

<choice> — match either alternative.

OneOrMore(Arc<Pattern>)

<oneOrMore> — match inner one or more times.

Ref(String)

<ref name="X"/>.

After(Arc<Pattern>, Arc<Pattern>)

Internal: a pattern that matches a fixed remaining set of children, produced by derivatives. Equivalent to a successfully-matched-so-far state.

Trait Implementations

impl Clone for Pattern

fn clone(&self) -> Pattern

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Pattern

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.