Struct sp_externalities::Extensions

[+] Show declaration

pub struct Extensions { /* fields omitted */ }

[−] Expand description

Stores extensions that should be made available through the externalities.

Implementations

impl Extensions[−]

pub fn new() -> Self[−]

Create new instance of Self.

pub fn register<E: Extension>(&mut self, ext: E)[−]

Register the given extension.

pub fn register_with_type_id(
    &mut self,
    type_id: TypeId,
    extension: Box<dyn Extension>
) -> Result<(), Error>[−]

Register extension ext.

pub fn get_mut(&mut self, ext_type_id: TypeId) -> Option<&mut dyn Any>[−]

Return a mutable reference to the requested extension.

pub fn deregister(&mut self, type_id: TypeId) -> Option<Box<dyn Extension>>[−]

Deregister extension of type E.

Trait Implementations

impl Debug for Extensions[+]

[+] Show hidden undocumented items

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

Formats the value using the given formatter.

impl Default for Extensions[+]

[+] Show hidden undocumented items

fn default() -> Extensions[−]

Returns the "default value" for a type.