157 lines
2.6 KiB
Rust
157 lines
2.6 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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#![feature(const_fn)]
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#![allow(dead_code)]
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#![warn(clippy::new_without_default, clippy::new_without_default_derive)]
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pub struct Foo;
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impl Foo {
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pub fn new() -> Foo {
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Foo
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}
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}
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pub struct Bar;
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impl Bar {
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pub fn new() -> Self {
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Bar
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}
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}
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pub struct Ok;
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impl Ok {
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pub fn new() -> Self {
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Ok
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}
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}
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impl Default for Ok {
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fn default() -> Self {
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Ok
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}
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}
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pub struct Params;
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impl Params {
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pub fn new(_: u32) -> Self {
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Params
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}
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}
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pub struct GenericsOk<T> {
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bar: T,
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}
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impl<U> Default for GenericsOk<U> {
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fn default() -> Self {
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unimplemented!();
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}
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}
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impl<'c, V> GenericsOk<V> {
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pub fn new() -> GenericsOk<V> {
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unimplemented!()
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}
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}
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pub struct LtOk<'a> {
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foo: &'a bool,
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}
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impl<'b> Default for LtOk<'b> {
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fn default() -> Self {
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unimplemented!();
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}
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}
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impl<'c> LtOk<'c> {
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pub fn new() -> LtOk<'c> {
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unimplemented!()
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}
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}
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pub struct LtKo<'a> {
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foo: &'a bool,
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}
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impl<'c> LtKo<'c> {
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pub fn new() -> LtKo<'c> {
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unimplemented!()
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}
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// FIXME: that suggestion is missing lifetimes
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}
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struct Private;
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impl Private {
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fn new() -> Private {
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unimplemented!()
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} // We don't lint private items
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}
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struct Const;
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impl Const {
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pub const fn new() -> Const {
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Const
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} // const fns can't be implemented via Default
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}
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pub struct IgnoreGenericNew;
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impl IgnoreGenericNew {
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pub fn new<T>() -> Self {
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IgnoreGenericNew
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} // the derived Default does not make sense here as the result depends on T
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}
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pub trait TraitWithNew: Sized {
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fn new() -> Self {
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panic!()
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}
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}
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pub struct IgnoreUnsafeNew;
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impl IgnoreUnsafeNew {
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pub unsafe fn new() -> Self {
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IgnoreUnsafeNew
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}
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}
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#[derive(Default)]
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pub struct OptionRefWrapper<'a, T: 'a>(Option<&'a T>);
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impl<'a, T: 'a> OptionRefWrapper<'a, T> {
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pub fn new() -> Self {
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OptionRefWrapper(None)
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}
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}
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pub struct Allow(Foo);
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impl Allow {
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#[allow(clippy::new_without_default)]
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pub fn new() -> Self { unimplemented!() }
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}
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pub struct AllowDerive;
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impl AllowDerive {
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#[allow(clippy::new_without_default_derive)]
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pub fn new() -> Self { unimplemented!() }
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}
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fn main() {}
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