Struct cddl_cat::ivt::Occur

pub struct Occur {
    pub limit: OccurLimit,
    pub node: Box<Node>,
}

Occurences specify how many times a value can appear.

This implementation wraps the Node that the occurrence applies to.

Fields

limit: OccurLimit

node: Box<Node>

Implementations

impl Occur

pub fn new(limit: OccurLimit, node: Node) -> Occur

Creates a new Occur from one of the CDDL occurrence chars ?*+

pub fn symbol(&self) -> String

Get the CDDL symbol for this occurrence.

Returns ?, *, +, or n*m

pub fn limits(&self) -> (usize, usize)

Return the lower and upper limits on this occurrence

Occurrences can always be represented by an inclusive [lower, upper] count limit.

required => [1, 1] optional "?" => [0, 1] zero-or-more "*" => [0, MAX] one-or-more "+" => [1, MAX]

Trait Implementations

impl Clone for Occur

pub fn clone(&self) -> Occur

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Occur

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

Formats the value using the given formatter.

impl Display for Occur

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

Formats the value using the given formatter.

impl PartialEq<Occur> for Occur

pub fn eq(&self, other: &Occur) -> bool

This method tests for self and other values to be equal, and is used by ==.

pub fn ne(&self, other: &Occur) -> bool

This method tests for !=.

impl StructuralPartialEq for Occur