Trait relay_event_schema::protocol::DefaultContext

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pub trait DefaultContext: Default {
    // Required methods
    fn default_key() -> &'static str;
    fn from_context(context: Context) -> Option<Self>;
    fn cast(context: &Context) -> Option<&Self>;
    fn cast_mut(context: &mut Context) -> Option<&mut Self>;
    fn into_context(self) -> Context;
}
Expand description

A well-known context in the Contexts interface.

These contexts have a default key in the contexts map and can be constructed as an empty default value.

Required Methods§

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fn default_key() -> &'static str

The default key at which this context resides in Contexts.

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fn from_context(context: Context) -> Option<Self>

Converts this context type from a generic context type.

Returns Some if the context is of this type. Otherwise, returns None.

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fn cast(context: &Context) -> Option<&Self>

Casts a reference to this context type from a generic context type.

Returns Some if the context is of this type. Otherwise, returns None.

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fn cast_mut(context: &mut Context) -> Option<&mut Self>

Casts a mutable reference to this context type from a generic context type.

Returns Some if the context is of this type. Otherwise, returns None.

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fn into_context(self) -> Context

Boxes this context type in the generic context wrapper.

Returns Some if the context is of this type. Otherwise, returns None.

Object Safety§

This trait is not object safe.

Implementors§