Function cx

src/driver.rs:225–232

Obtain an extended context from `TyCtxt`.

(tcx: TyCtxt<'tcx>)

/// Obtain an extended context from `TyCtxt`.
pub fn cx<'tcx, C: CallbacksExt>(tcx: TyCtxt<'tcx>) -> &'tcx C::ExtCtxt<'tcx> {
    let tcx_addr = *tcx as *const _ as usize;
    let guard = TCX_EXT_MAP.lock().unwrap();
    let cx = guard.get(&tcx_addr).unwrap();
    assert!(cx.is::<C::ExtCtxt<'static>>());
    // SAFETY: we have checked that the type actually matches.
    unsafe { &*(&raw const **cx as *const C::ExtCtxt<'tcx>) }
}

#[macro_export]
macro_rules! hook_query {