Rollup merge of rust-lang#117655 - compiler-errors:method-tweaks, r=e…

…stebank

Method suggestion code tweaks

I was rummaging around the method suggestion code after rust-lang#117006 (comment) and saw a few things to simplify.

This is two unrelated commits, both in the same file. Review them separately, if you'd like.

r? estebank

compiler/rustc_hir_typeck/src/expr.rs

@@ -13,7 +13,7 @@ use crate::errors::{
     YieldExprOutsideOfCoroutine,
 };
 use crate::fatally_break_rust;
-use crate::method::{MethodCallComponents, SelfSource};
+use crate::method::SelfSource;
 use crate::type_error_struct;
 use crate::Expectation::{self, ExpectCastableToType, ExpectHasType, NoExpectation};
 use crate::{
@@ -512,7 +512,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
     ) -> Ty<'tcx> {
         let tcx = self.tcx;
         let (res, opt_ty, segs) =
-            self.resolve_ty_and_res_fully_qualified_call(qpath, expr.hir_id, expr.span);
+            self.resolve_ty_and_res_fully_qualified_call(qpath, expr.hir_id, expr.span, Some(args));
         let ty = match res {
             Res::Err => {
                 self.suggest_assoc_method_call(segs);
@@ -1332,7 +1332,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                         segment.ident,
                         SelfSource::MethodCall(rcvr),
                         error,
-                        Some(MethodCallComponents { receiver: rcvr, args, full_expr: expr }),
+                        Some(args),
                         expected,
                         false,
                     ) {

compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs

@@ -797,6 +797,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
         qpath: &'tcx QPath<'tcx>,
         hir_id: hir::HirId,
         span: Span,
+        args: Option<&'tcx [hir::Expr<'tcx>]>,
     ) -> (Res, Option<RawTy<'tcx>>, &'tcx [hir::PathSegment<'tcx>]) {
         debug!(
             "resolve_ty_and_res_fully_qualified_call: qpath={:?} hir_id={:?} span={:?}",
@@ -898,7 +899,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                         item_name,
                         SelfSource::QPath(qself),
                         error,
-                        None,
+                        args,
                         Expectation::NoExpectation,
                         trait_missing_method && span.edition().at_least_rust_2021(), // emits missing method for trait only after edition 2021
                     ) {

compiler/rustc_hir_typeck/src/method/mod.rs

@@ -7,7 +7,7 @@ mod prelude2021;
 pub mod probe;
 mod suggest;
 
-pub use self::suggest::{MethodCallComponents, SelfSource};
+pub use self::suggest::SelfSource;
 pub use self::MethodError::*;
 
 use crate::errors::OpMethodGenericParams;