3 #![allow(clippy::ptr_arg)]
4 #![warn(clippy::unnecessary_to_owned)]
7 use std::ffi::{CStr, CString, OsStr, OsString};
15 fn deref(&self) -> &[u8] {
20 impl AsRef<str> for X {
21 fn as_ref(&self) -> &str {
27 fn to_string(&self) -> String {
33 fn join(&self, other: impl AsRef<str>) -> Self {
34 let mut s = self.0.clone();
35 s.push_str(other.as_ref());
49 let c_str = CStr::from_bytes_with_nul(&[0]).unwrap();
50 let os_str = OsStr::new("x");
51 let path = std::path::Path::new("x");
54 let array_ref = &["x"];
55 let slice = &["x"][..];
56 let x = X(String::from("x"));
59 require_c_str(&Cow::from(c_str));
62 require_os_str(os_str);
63 require_os_str(&Cow::from(os_str));
64 require_os_str(os_str);
67 require_path(&Cow::from(path));
71 require_str(&Cow::from(s));
73 require_str(x_ref.as_ref());
76 require_slice(&Cow::from(slice));
77 require_slice(array.as_ref());
78 require_slice(array_ref.as_ref());
82 require_x(&Cow::<X>::Owned(x.clone()));
85 require_deref_c_str(c_str);
86 require_deref_os_str(os_str);
87 require_deref_path(path);
89 require_deref_slice(slice);
91 require_impl_deref_c_str(c_str);
92 require_impl_deref_os_str(os_str);
93 require_impl_deref_path(path);
94 require_impl_deref_str(s);
95 require_impl_deref_slice(slice);
97 require_deref_str_slice(s, slice);
98 require_deref_slice_str(slice, s);
100 require_as_ref_c_str(c_str);
101 require_as_ref_os_str(os_str);
102 require_as_ref_path(path);
103 require_as_ref_str(s);
104 require_as_ref_str(&x);
105 require_as_ref_slice(array);
106 require_as_ref_slice(array_ref);
107 require_as_ref_slice(slice);
109 require_impl_as_ref_c_str(c_str);
110 require_impl_as_ref_os_str(os_str);
111 require_impl_as_ref_path(path);
112 require_impl_as_ref_str(s);
113 require_impl_as_ref_str(&x);
114 require_impl_as_ref_slice(array);
115 require_impl_as_ref_slice(array_ref);
116 require_impl_as_ref_slice(slice);
118 require_as_ref_str_slice(s, array);
119 require_as_ref_str_slice(s, array_ref);
120 require_as_ref_str_slice(s, slice);
121 require_as_ref_slice_str(array, s);
122 require_as_ref_slice_str(array_ref, s);
123 require_as_ref_slice_str(slice, s);
125 let _ = x.join(x_ref);
127 let _ = slice.iter().copied();
128 let _ = slice.iter().copied();
129 let _ = [std::path::PathBuf::new()][..].iter().cloned();
130 let _ = [std::path::PathBuf::new()][..].iter().cloned();
132 let _ = slice.iter().copied();
133 let _ = slice.iter().copied();
134 let _ = [std::path::PathBuf::new()][..].iter().cloned();
135 let _ = [std::path::PathBuf::new()][..].iter().cloned();
137 let _ = check_files(&[FileType::Account]);
140 require_string(&s.to_string());
141 require_string(&Cow::from(s).into_owned());
142 require_string(&s.to_owned());
143 require_string(&x_ref.to_string());
146 require_slice(&x.to_owned());
147 require_deref_slice(x.to_owned());
149 // The following should be flagged by `redundant_clone`, but not by this lint.
150 require_c_str(&CString::from_vec_with_nul(vec![0]).unwrap());
151 require_os_str(&OsString::from("x"));
152 require_path(&std::path::PathBuf::from("x"));
153 require_str(&String::from("x"));
156 fn require_c_str(_: &CStr) {}
157 fn require_os_str(_: &OsStr) {}
158 fn require_path(_: &std::path::Path) {}
159 fn require_str(_: &str) {}
160 fn require_slice<T>(_: &[T]) {}
161 fn require_x(_: &X) {}
163 fn require_deref_c_str<T: Deref<Target = CStr>>(_: T) {}
164 fn require_deref_os_str<T: Deref<Target = OsStr>>(_: T) {}
165 fn require_deref_path<T: Deref<Target = std::path::Path>>(_: T) {}
166 fn require_deref_str<T: Deref<Target = str>>(_: T) {}
167 fn require_deref_slice<T, U: Deref<Target = [T]>>(_: U) {}
169 fn require_impl_deref_c_str(_: impl Deref<Target = CStr>) {}
170 fn require_impl_deref_os_str(_: impl Deref<Target = OsStr>) {}
171 fn require_impl_deref_path(_: impl Deref<Target = std::path::Path>) {}
172 fn require_impl_deref_str(_: impl Deref<Target = str>) {}
173 fn require_impl_deref_slice<T>(_: impl Deref<Target = [T]>) {}
175 fn require_deref_str_slice<T: Deref<Target = str>, U, V: Deref<Target = [U]>>(_: T, _: V) {}
176 fn require_deref_slice_str<T, U: Deref<Target = [T]>, V: Deref<Target = str>>(_: U, _: V) {}
178 fn require_as_ref_c_str<T: AsRef<CStr>>(_: T) {}
179 fn require_as_ref_os_str<T: AsRef<OsStr>>(_: T) {}
180 fn require_as_ref_path<T: AsRef<std::path::Path>>(_: T) {}
181 fn require_as_ref_str<T: AsRef<str>>(_: T) {}
182 fn require_as_ref_slice<T, U: AsRef<[T]>>(_: U) {}
184 fn require_impl_as_ref_c_str(_: impl AsRef<CStr>) {}
185 fn require_impl_as_ref_os_str(_: impl AsRef<OsStr>) {}
186 fn require_impl_as_ref_path(_: impl AsRef<std::path::Path>) {}
187 fn require_impl_as_ref_str(_: impl AsRef<str>) {}
188 fn require_impl_as_ref_slice<T>(_: impl AsRef<[T]>) {}
190 fn require_as_ref_str_slice<T: AsRef<str>, U, V: AsRef<[U]>>(_: T, _: V) {}
191 fn require_as_ref_slice_str<T, U: AsRef<[T]>, V: AsRef<str>>(_: U, _: V) {}
193 // `check_files` is based on:
194 // https://github.com/breard-r/acmed/blob/1f0dcc32aadbc5e52de6d23b9703554c0f925113/acmed/src/storage.rs#L262
195 fn check_files(file_types: &[FileType]) -> bool {
196 for t in file_types {
197 let path = match get_file_path(t) {
210 fn get_file_path(_file_type: &FileType) -> Result<std::path::PathBuf, std::io::Error> {
211 Ok(std::path::PathBuf::new())
214 fn require_string(_: &String) {}