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Reduce comment verbosity

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This commit is contained in:
Esteban Küber
2025-07-21 16:23:13 +00:00
parent 8df93e6966
commit dafc9f9b53
1 changed files with 5 additions and 33 deletions
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38
compiler/rustc_borrowck/src/diagnostics/move_errors.rs
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@@ -629,43 +629,15 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
use_span = match self.infcx.tcx.parent_hir_node(upvar_hir_id) {
hir::Node::Param(param) => {
// Instead of pointing at the path where we access the value within a
// closure, we point at the type on the parameter from the definition
// of the outer function:
//
// error[E0507]: cannot move out of `foo`, a captured
// variable in an `Fn` closure
// --> file.rs:14:25
// |
// 13 | fn do_stuff(foo: Option<Foo>) {
// | --- ----------- move occurs because `foo` has type
// | | `Option<Foo>`, which does not
// | | implement the `Copy` trait
// | captured outer variable
// 14 | require_fn_trait(|| async {
// | -- ^^^^^ `foo` is moved here
// | |
// | captured by this `Fn` closure
// 15 | if foo.map_or(false, |f| f.foo()) {
// | --- variable moved due to use in coroutine
// closure, we point at the type of the outer `fn` argument.
param.ty_span
}
hir::Node::LetStmt(stmt) => match (stmt.ty, stmt.init) {
// 13 | fn do_stuff(foo: Option<Foo>) {
// 14 | let foo: Option<Foo> = foo;
// | --- ----------- move occurs because `foo` has type
// | | `Option<Foo>`, which does not implement
// | | the `Copy` trait
// | captured outer variable
// We point at the type of the outer let-binding.
(Some(ty), _) => ty.span,
// 13 | fn do_stuff(bar: Option<Foo>) {
// 14 | let foo = bar;
// | --- --- move occurs because `foo` has type
// | | `Option<Foo>`, which does not implement the
// | | `Copy` trait
// | captured outer variable
//
// We don't want the case where the initializer is something that spans
// multiple lines, like a closure, as the ASCII art gets messy.
// We point at the initializer of the outer let-binding, but only if it
// isn't something that spans multiple lines, like a closure, as the
// ASCII art gets messy.
(None, Some(init))
if !self.infcx.tcx.sess.source_map().is_multiline(init.span) =>
{