Struct Extensions 

pub struct Extensions<'a> { /* private fields */ }

Holds data on all the Extensions which are active for a given evaluation.

Clone is cheap for this type.

Implementations

impl Extensions<'static>

pub fn all_available() -> Extensions<'static>

Get a new Extensions containing data on all the available extensions.

pub fn none() -> Extensions<'static>

Get a new Extensions with no extensions enabled.

impl<'a> Extensions<'a>

pub fn specific_extensions(extensions: &'a [Extension]) -> Extensions<'a>

Get a new Extensions with these specific extensions enabled.

pub fn ext_names(&self) -> impl Iterator<Item = &Name>

Get the names of all active extensions.

pub fn func(&self, name: &Name) -> Result<&ExtensionFunction>

Get the extension function with the given name, from these extensions.

Returns an error if the function is not defined by any extension, or if it is defined multiple times.

Trait Implementations

impl<'a> Clone for Extensions<'a>

fn clone(&self) -> Extensions<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for Extensions<'a>

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

Formats the value using the given formatter.