97 lines
2 KiB
Rust
97 lines
2 KiB
Rust
// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![allow(clippy::many_single_char_names, clippy::blacklisted_name, clippy::redundant_field_names)]
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#[derive(Copy, Clone)]
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struct Foo(u32);
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#[derive(Copy, Clone)]
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struct Bar([u8; 24]);
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struct FooRef<'a> {
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foo: &'a Foo,
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}
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type Baz = u32;
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fn good(a: &mut u32, b: u32, c: &Bar) {
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}
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fn good_return_implicit_lt_ref(foo: &Foo) -> &u32 {
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&foo.0
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}
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#[allow(clippy::needless_lifetimes)]
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fn good_return_explicit_lt_ref<'a>(foo: &'a Foo) -> &'a u32 {
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&foo.0
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}
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fn good_return_implicit_lt_struct(foo: &Foo) -> FooRef {
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FooRef {
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foo,
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}
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}
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#[allow(clippy::needless_lifetimes)]
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fn good_return_explicit_lt_struct<'a>(foo: &'a Foo) -> FooRef<'a> {
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FooRef {
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foo,
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}
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}
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fn bad(x: &u32, y: &Foo, z: &Baz) {
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}
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impl Foo {
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fn good(self, a: &mut u32, b: u32, c: &Bar) {
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}
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fn good2(&mut self) {
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}
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fn bad(&self, x: &u32, y: &Foo, z: &Baz) {
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}
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fn bad2(x: &u32, y: &Foo, z: &Baz) {
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}
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}
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impl AsRef<u32> for Foo {
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fn as_ref(&self) -> &u32 {
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&self.0
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}
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}
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impl Bar {
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fn good(&self, a: &mut u32, b: u32, c: &Bar) {
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}
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fn bad2(x: &u32, y: &Foo, z: &Baz) {
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}
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}
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fn main() {
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let (mut foo, bar) = (Foo(0), Bar([0; 24]));
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let (mut a, b, c, x, y, z) = (0, 0, Bar([0; 24]), 0, Foo(0), 0);
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good(&mut a, b, &c);
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good_return_implicit_lt_ref(&y);
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good_return_explicit_lt_ref(&y);
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bad(&x, &y, &z);
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foo.good(&mut a, b, &c);
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foo.good2();
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foo.bad(&x, &y, &z);
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Foo::bad2(&x, &y, &z);
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bar.good(&mut a, b, &c);
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Bar::bad2(&x, &y, &z);
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foo.as_ref();
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}
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