Struct QueryStackFrame

pub struct QueryStackFrame {
    pub description: String,
    span: Option<Span>,
    pub def_id: Option<DefId>,
    pub def_kind: Option<DefKind>,
    pub ty_def_id: Option<DefId>,
    pub dep_kind: DepKind,
    hash: Hash64,
}

Description of a frame in the query stack.

This is mostly used in case of cycles for error reporting.

Fields

description: String

span: Option<Span>

def_id: Option<DefId>

def_kind: Option<DefKind>

ty_def_id: Option<DefId>

A def-id that is extracted from a Ty in a query key

dep_kind: DepKind

hash: Hash64

This hash is used to deterministically pick a query to remove cycles in the parallel compiler.

Implementations

impl QueryStackFrame

pub fn new( description: String, span: Option<Span>, def_id: Option<DefId>, def_kind: Option<DefKind>, dep_kind: DepKind, ty_def_id: Option<DefId>, hash: impl FnOnce() -> Hash64, ) -> Self

pub fn default_span(&self, span: Span) -> Span

Trait Implementations

impl Clone for QueryStackFrame

fn clone(&self) -> QueryStackFrame

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for QueryStackFrame

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

Formats the value using the given formatter.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 72 bytes