Struct MetadataCollection

pub struct MetadataCollection { /* private fields */ }

A utility type to collect metadata for each attribute, unified by its name.

Implementations

impl MetadataCollection

Mutation

pub fn update_from_list(&mut self, list: &mut List<Attributes>)

Assign order ids to each attribute either in macros (along with macros themselves) or attributes of patterns, and store them in this collection.

Must be called before querying matches.

impl MetadataCollection

Access

pub fn iter(&self) -> impl Iterator<Item = (&str, &Metadata)>

Return an iterator over the contents of the map in an easy-to-consume form.

Trait Implementations

impl Clone for MetadataCollection

fn clone(&self) -> MetadataCollection

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for MetadataCollection

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

Formats the value using the given formatter.

impl Default for MetadataCollection

fn default() -> MetadataCollection

Returns the “default value” for a type.