bjoernager/rust
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Simplify lang item groups

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This commit is contained in:
Cameron Steffen 2022-10-26 16:19:07 -05:00
parent 6621279a75
commit a6180ede5c
3 changed files with 73 additions and 82 deletions
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20
compiler/rustc_const_eval/src/util/call_kind.rs
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@ -3,7 +3,7 @@
//! context.
use rustc_hir::def_id::DefId;
use rustc_hir::lang_items::LangItemGroup;
use rustc_hir::lang_items;
use rustc_middle::ty::subst::SubstsRef;
use rustc_middle::ty::{self, AssocItemContainer, DefIdTree, Instance, ParamEnv, Ty, TyCtxt};
use rustc_span::symbol::Ident;
@ -74,22 +74,24 @@ pub fn call_kind<'tcx>(
}
});
let fn_call = parent
.and_then(|p| tcx.lang_items().group(LangItemGroup::Fn).iter().find(|did| **did == p));
let fn_call = parent.and_then(|p| {
lang_items::FN_TRAITS.iter().filter_map(|&l| tcx.lang_items().get(l)).find(|&id| id == p)
});
let operator = (!from_hir_call)
.then(|| parent)
.flatten()
.and_then(|p| tcx.lang_items().group(LangItemGroup::Op).iter().find(|did| **did == p));
let operator = if !from_hir_call && let Some(p) = parent {
lang_items::OPERATORS.iter().filter_map(|&l| tcx.lang_items().get(l)).find(|&id| id == p)
} else {
None
};
let is_deref = !from_hir_call && tcx.is_diagnostic_item(sym::deref_method, method_did);
// Check for a 'special' use of 'self' -
// an FnOnce call, an operator (e.g. `<<`), or a
// deref coercion.
let kind = if let Some(&trait_id) = fn_call {
let kind = if let Some(trait_id) = fn_call {
Some(CallKind::FnCall { fn_trait_id: trait_id, self_ty: method_substs.type_at(0) })
} else if let Some(&trait_id) = operator {
} else if let Some(trait_id) = operator {
Some(CallKind::Operator { self_arg, trait_id, self_ty: method_substs.type_at(0) })
} else if is_deref {
let deref_target = tcx.get_diagnostic_item(sym::deref_target).and_then(|deref_target| {