Struct rustc_interface::queries::Query

pub struct Query<T> {
    result: RefCell<Option<Result<T>>>,
}

Represent the result of a query. This result can be stolen with the take method and generated with the compute method.

Fields

result: RefCell<Option<Result<T>>>

Implementations

impl<T> Query<T>

pub(in queries) fn compute<F: FnOnce() -> Result<T>>(
    &self,
    f: F
) -> Result<&Query<T>>

pub fn take(&self) -> T

Takes ownership of the query result. Further attempts to take or peek the query result will panic unless it is generated by calling the compute method.

pub fn peek(&self) -> Ref<'_, T>

Borrows the query result using the RefCell. Panics if the result is stolen.

pub fn peek_mut(&self) -> RefMut<'_, T>

Mutably borrows the query result using the RefCell. Panics if the result is stolen.

Trait Implementations

impl<T> Default for Query<T>

pub fn default() -> Self

Returns the "default value" for a type.