Trait Lookup

pub trait Lookup {
    type Database<'db>: ?Sized;
    type Data;

    // Required method
    fn lookup(&self, db: &Self::Database<'_>) -> Self::Data;
}

Required Associated Types

type Database<'db>: ?Sized

type Data

Required Methods

fn lookup(&self, db: &Self::Database<'_>) -> Self::Data

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl Lookup for SyntaxContextId

type Database<'db> = dyn ExpandDatabase + 'db

type Data = SyntaxContextData

fn lookup(&self, db: &Self::Database<'_>) -> SyntaxContextData

Implementors

impl Lookup for MacroCallId

type Database<'db> = dyn ExpandDatabase + 'db

type Data = MacroCallLoc