Struct Tag 

pub struct Tag { /* private fields */ }

One element’s identity.

Implementations

impl Tag

pub fn new(class: Class, constructed: bool, number: u32) -> Self

A tag built from its parts.

pub fn beyond_naming(class: Class, constructed: bool) -> Self

A tag whose number is wider than this reader names.

Every such tag is the same tag here, which is what its class and construction say and nothing more. Two documents writing different wide numbers are still told apart by their bytes, which is what identity is compared on; what this decides is only that neither matches a tag a schema names.

pub fn primitive(number: u32) -> Self

A universal primitive tag, the common case for values.

pub fn constructed(number: u32) -> Self

A universal constructed tag, the common case for containers.

pub fn context(constructed: bool, number: u32) -> Self

A context-specific tag, as written [n] in a module.

pub fn class(self) -> Class

Who defines what this number means.

pub fn is_constructed(self) -> bool

Whether the contents are further elements rather than a value.

pub fn number(self) -> Option<u32>

The number within the class, where it is one this reader names.

None is a number too wide for that, which no schema assigns and nothing here interprets. A caller matching against the numbers it knows gets no match, which is the answer.

pub fn is_end_of_contents(self) -> bool

Whether this is the end-of-contents marker that closes an indefinite-length element.

Trait Implementations

impl Clone for Tag

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Tag

impl Debug for Tag

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

Formats the value using the given formatter.

impl Eq for Tag

impl PartialEq for Tag

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Tag