1//! The first version of the prelude of The Rust Standard Library.
2//!
3//! See the [module-level documentation](super) for more.
4
5#![stable(feature = "rust1", since = "1.0.0")]
6
7// No formatting: this file is nothing but re-exports, and their order is worth preserving.
8#![cfg_attr(rustfmt, rustfmt::skip)]
9
10// Re-exported core operators
11#[stable(feature = "rust1", since = "1.0.0")]
12#[doc(no_inline)]
13pub use crate::marker::{Send, Sized, Sync, Unpin};
14#[stable(feature = "rust1", since = "1.0.0")]
15#[doc(no_inline)]
16pub use crate::ops::{Drop, Fn, FnMut, FnOnce};
17#[stable(feature = "async_closure", since = "1.85.0")]
18#[doc(no_inline)]
19pub use crate::ops::{AsyncFn, AsyncFnMut, AsyncFnOnce};
20
21// Re-exported functions
22#[stable(feature = "rust1", since = "1.0.0")]
23#[doc(no_inline)]
24pub use crate::mem::drop;
25#[stable(feature = "size_of_prelude", since = "1.80.0")]
26#[doc(no_inline)]
27pub use crate::mem::{align_of, align_of_val, size_of, size_of_val};
28
29// Re-exported types and traits
30#[stable(feature = "rust1", since = "1.0.0")]
31#[doc(no_inline)]
32pub use crate::convert::{AsMut, AsRef, From, Into};
33#[stable(feature = "rust1", since = "1.0.0")]
34#[doc(no_inline)]
35pub use crate::iter::{DoubleEndedIterator, ExactSizeIterator};
36#[stable(feature = "rust1", since = "1.0.0")]
37#[doc(no_inline)]
38pub use crate::iter::{Extend, IntoIterator, Iterator};
39#[stable(feature = "rust1", since = "1.0.0")]
40#[doc(no_inline)]
41pub use crate::option::Option::{self, None, Some};
42#[stable(feature = "rust1", since = "1.0.0")]
43#[doc(no_inline)]
44pub use crate::result::Result::{self, Err, Ok};
45
46// Re-exported built-in macros and traits
47#[stable(feature = "builtin_macro_prelude", since = "1.38.0")]
48#[doc(no_inline)]
49#[expect(deprecated)]
50pub use core::prelude::v1::{
51 assert, assert_eq, assert_ne, cfg, column, compile_error, concat, debug_assert, debug_assert_eq,
52 debug_assert_ne, env, file, format_args, include, include_bytes, include_str, line, matches,
53 module_path, option_env, stringify, todo, r#try, unimplemented, unreachable, write,
54 writeln, Clone, Copy, Debug, Default, Eq, Hash, Ord, PartialEq, PartialOrd,
55};
56
57#[stable(feature = "builtin_macro_prelude", since = "1.38.0")]
58#[doc(no_inline)]
59pub use crate::{
60 dbg, eprint, eprintln, format, is_x86_feature_detected, print, println, thread_local
61};
62
63// These macros need special handling, so that we don't export them *and* the modules of the same
64// name. We only want the macros in the prelude so we shadow the original modules with private
65// modules with the same names.
66mod ambiguous_macros_only {
67 #[expect(hidden_glob_reexports)]
68 mod vec {}
69 #[expect(hidden_glob_reexports)]
70 mod panic {}
71 // Building std without the expect exported_private_dependencies will create warnings, but then
72 // clippy claims its a useless_attribute. So silence both.
73 #[expect(clippy::useless_attribute)]
74 #[expect(exported_private_dependencies)]
75 #[stable(feature = "builtin_macro_prelude", since = "1.38.0")]
76 pub use crate::*;
77}
78#[stable(feature = "builtin_macro_prelude", since = "1.38.0")]
79#[doc(no_inline)]
80pub use self::ambiguous_macros_only::{vec, panic};
81
82#[unstable(feature = "cfg_select", issue = "115585")]
83#[doc(no_inline)]
84pub use core::prelude::v1::cfg_select;
85
86#[unstable(
87 feature = "concat_bytes",
88 issue = "87555",
89 reason = "`concat_bytes` is not stable enough for use and is subject to change"
90)]
91#[doc(no_inline)]
92pub use core::prelude::v1::concat_bytes;
93
94#[unstable(feature = "const_format_args", issue = "none")]
95#[doc(no_inline)]
96pub use core::prelude::v1::const_format_args;
97
98#[unstable(
99 feature = "log_syntax",
100 issue = "29598",
101 reason = "`log_syntax!` is not stable enough for use and is subject to change"
102)]
103#[doc(no_inline)]
104pub use core::prelude::v1::log_syntax;
105
106#[unstable(
107 feature = "trace_macros",
108 issue = "29598",
109 reason = "`trace_macros` is not stable enough for use and is subject to change"
110)]
111#[doc(no_inline)]
112pub use core::prelude::v1::trace_macros;
113
114// Do not `doc(no_inline)` so that they become doc items on their own
115// (no public module for them to be re-exported from).
116#[stable(feature = "builtin_macro_prelude", since = "1.38.0")]
117pub use core::prelude::v1::{
118 alloc_error_handler, bench, derive, global_allocator, test, test_case,
119};
120
121#[unstable(feature = "derive_const", issue = "118304")]
122pub use core::prelude::v1::derive_const;
123
124// Do not `doc(no_inline)` either.
125#[unstable(
126 feature = "cfg_accessible",
127 issue = "64797",
128 reason = "`cfg_accessible` is not fully implemented"
129)]
130pub use core::prelude::v1::cfg_accessible;
131
132// Do not `doc(no_inline)` either.
133#[unstable(
134 feature = "cfg_eval",
135 issue = "82679",
136 reason = "`cfg_eval` is a recently implemented feature"
137)]
138pub use core::prelude::v1::cfg_eval;
139
140// Do not `doc(no_inline)` either.
141#[unstable(
142 feature = "type_ascription",
143 issue = "23416",
144 reason = "placeholder syntax for type ascription"
145)]
146pub use core::prelude::v1::type_ascribe;
147
148// Do not `doc(no_inline)` either.
149#[unstable(
150 feature = "deref_patterns",
151 issue = "87121",
152 reason = "placeholder syntax for deref patterns"
153)]
154pub use core::prelude::v1::deref;
155
156// Do not `doc(no_inline)` either.
157#[unstable(
158 feature = "type_alias_impl_trait",
159 issue = "63063",
160 reason = "`type_alias_impl_trait` has open design concerns"
161)]
162pub use core::prelude::v1::define_opaque;
163
164#[unstable(feature = "extern_item_impls", issue = "125418")]
165pub use core::prelude::v1::{eii, unsafe_eii};
166
167#[unstable(feature = "eii_internals", issue = "none")]
168pub use core::prelude::v1::eii_declaration;
169
170// The file so far is equivalent to core/src/prelude/v1.rs. It is duplicated
171// rather than glob imported because we want docs to show these re-exports as
172// pointing to within `std`.
173// Below are the items from the alloc crate.
174
175#[stable(feature = "rust1", since = "1.0.0")]
176#[doc(no_inline)]
177pub use crate::borrow::ToOwned;
178#[stable(feature = "rust1", since = "1.0.0")]
179#[doc(no_inline)]
180pub use crate::boxed::Box;
181#[stable(feature = "rust1", since = "1.0.0")]
182#[doc(no_inline)]
183pub use crate::string::{String, ToString};
184#[stable(feature = "rust1", since = "1.0.0")]
185#[doc(no_inline)]
186pub use crate::vec::Vec;
187