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rustc_mir_itertools: Avoid needless collect with itertools

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This commit is contained in:
Mateusz Mikuła 2022-01-22 12:12:12 +01:00
parent ecf72996ed
commit bc8cef194b
5 changed files with 8 additions and 22 deletions
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3
compiler/rustc_mir_transform/src/function_item_references.rs
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@ -1,3 +1,4 @@
use itertools::Itertools;
use rustc_errors::Applicability;
use rustc_hir::def_id::DefId;
use rustc_middle::mir::visit::Visitor;
@ -197,7 +198,7 @@ impl<'tcx> FunctionItemRefChecker<'_, 'tcx> {
let ident = self.tcx.item_name(fn_id).to_ident_string();
let ty_params = fn_substs.types().map(|ty| format!("{}", ty));
let const_params = fn_substs.consts().map(|c| format!("{}", c));
let params = ty_params.chain(const_params).collect::<Vec<String>>().join(", ");
let params = ty_params.chain(const_params).join(", ");
let num_args = fn_sig.inputs().map_bound(|inputs| inputs.len()).skip_binder();
let variadic = if fn_sig.c_variadic() { ", ..." } else { "" };
let ret = if fn_sig.output().skip_binder().is_unit() { "" } else { " -> _" };