Module lang_items 

Detecting lang items.

Language items are items that represent concepts intrinsic to the language itself. Examples are:

• Traits that specify “kinds”; e.g., Sync, Send.
• Traits that represent operators; e.g., Add, Sub, Index.
• Functions called by the compiler itself.

Re-exports

use rustc_attr_ir::lang_items::LangItem; 🔒

use rustc_hir::def_id::DefId; 🔒

use rustc_span::Span; 🔒

use rustc_target::spec::PanicStrategy; 🔒

use crate::ty; 🔒

use crate::ty::TyCtxt; 🔒

Functions

required

Returns true if the specified lang_item must be present for this compilation.