[go: up one dir, main page]

const_fn 0.4.11

A lightweight attribute for easy generation of const functions with conditional compilations.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184

# Changelog

All notable changes to this project will be documented in this file.

This project adheres to [Semantic Versioning](https://semver.org).

Releases may yanked if there is a security bug, a soundness bug, or a regression.

<!--
Note: In this file, do not use the hard wrap in the middle of a sentence for compatibility with GitHub comment style markdown rendering.
-->

## [Unreleased]

## [0.4.11] - 2025-01-06

- Improve Windows host support by workaround [rustc bug fixed in Rust 1.84](https://github.com/rust-lang/rust/pull/125205).

- Respect [`RUSTC_BOOTSTRAP=-1` recently added in nightly](https://github.com/rust-lang/rust/pull/132993) in rustc version detection.

## [0.4.10] - 2024-04-21

- Respect `RUSTC_WRAPPER` in rustc version detection.

## [0.4.9] - 2022-01-03

- Fix detection of `-Z assume-incomplete-release` in recent nightly compilers. ([#39](https://github.com/taiki-e/const_fn/pull/39))

## [0.4.8] - 2021-05-19

- Fix parsing of macro metavariable in attribute arguments. ([#37](https://github.com/taiki-e/const_fn/pull/37))

## [0.4.7] - 2021-04-17

- Support compiling with `RUSTFLAGS='-Z assume-incomplete-release'` on nightly compiler. ([#35](https://github.com/taiki-e/const_fn/pull/35))

## [0.4.6] - 2021-03-27

- Fix compatibility issues with const generics.

## [0.4.5] - 2021-01-05

- Exclude unneeded files from crates.io.

## [0.4.4] - 2020-11-02

- Accept `const_fn` attribute with no arguments and functions without `const` keyword. ([#34](https://github.com/taiki-e/const_fn/pull/34))
  This allows `const_fn` to be used as an optional dependency.

  ```rust
  #[cfg_attr(feature = "...", const_fn::const_fn)]
  pub fn func() {
      /* ... */
  }
  ```

## [0.4.3] - 2020-11-02

- `const_fn` no longer fails to compile if unable to determine rustc version. Instead, it now displays a warning. ([#31](https://github.com/taiki-e/const_fn/pull/31))

- `const_fn` no longer relies on debug print format. ([#30](https://github.com/taiki-e/const_fn/pull/30))

## [0.4.2] - 2020-08-31

- Improve error messages when failed to parse version information. ([#26](https://github.com/taiki-e/const_fn/pull/26))

- Fix compile failure with cargo installed by yum. ([#26](https://github.com/taiki-e/const_fn/pull/26))

## [0.4.1] - 2020-08-25

- Fix compile failure with non-cargo build systems. ([#23](https://github.com/taiki-e/const_fn/pull/23))

## [0.4.0] - 2020-08-25

- Add support for version-based code generation. ([#17](https://github.com/taiki-e/const_fn/pull/17))
  The following conditions are available:

  ```rust
  use const_fn::const_fn;

  // function is `const` on specified version and later compiler (including beta and nightly)
  #[const_fn("1.36")]
  pub const fn version() {
      /* ... */
  }

  // function is `const` on nightly compiler (including dev build)
  #[const_fn(nightly)]
  pub const fn nightly() {
      /* ... */
  }

  // function is `const` if `cfg(...)` is true
  #[const_fn(cfg(...))]
  pub const fn cfg() {
      /* ... */
  }

  // function is `const` if `cfg(feature = "...")` is true
  #[const_fn(feature = "...")]
  pub const fn feature() {
      /* ... */
  }
  ```

- Improve compile time by removing proc-macro related dependencies ([#18](https://github.com/taiki-e/const_fn/pull/18), [#20](https://github.com/taiki-e/const_fn/pull/20)).

## [0.3.1] - 2019-12-09

- Updated `syn-mid` to 0.5.

## [0.3.0] - 2019-10-20

- `#[const_fn]` attribute may only be used on const functions.

## [0.2.1] - 2019-08-15

- Updated `proc-macro2`, `syn`, and `quote` to 1.0.

- Updated `syn-mid` to 0.4.

## [0.2.0] - 2019-06-16

- Transition to Rust 2018. With this change, the minimum required version will go up to Rust 1.31.

## [0.1.7] - 2019-02-18

- Update syn-mid version to 0.3

## [0.1.6] - 2019-02-15

- Reduce compilation time

## [0.1.5] - 2019-02-15

- Revert 0.1.4

## [0.1.4] - 2019-02-15

**Note:** This release has been yanked.

- Reduce compilation time

## [0.1.3] - 2019-01-06

- Fix dependencies

## [0.1.2] - 2018-12-27

- Improve error messages

## [0.1.1] - 2018-12-27

- Improve an error message

## [0.1.0] - 2018-12-25

Initial release

[Unreleased]: https://github.com/taiki-e/const_fn/compare/v0.4.11...HEAD
[0.4.11]: https://github.com/taiki-e/const_fn/compare/v0.4.10...v0.4.11
[0.4.10]: https://github.com/taiki-e/const_fn/compare/v0.4.9...v0.4.10
[0.4.9]: https://github.com/taiki-e/const_fn/compare/v0.4.8...v0.4.9
[0.4.8]: https://github.com/taiki-e/const_fn/compare/v0.4.7...v0.4.8
[0.4.7]: https://github.com/taiki-e/const_fn/compare/v0.4.6...v0.4.7
[0.4.6]: https://github.com/taiki-e/const_fn/compare/v0.4.5...v0.4.6
[0.4.5]: https://github.com/taiki-e/const_fn/compare/v0.4.4...v0.4.5
[0.4.4]: https://github.com/taiki-e/const_fn/compare/v0.4.3...v0.4.4
[0.4.3]: https://github.com/taiki-e/const_fn/compare/v0.4.2...v0.4.3
[0.4.2]: https://github.com/taiki-e/const_fn/compare/v0.4.1...v0.4.2
[0.4.1]: https://github.com/taiki-e/const_fn/compare/v0.4.0...v0.4.1
[0.4.0]: https://github.com/taiki-e/const_fn/compare/v0.3.1...v0.4.0
[0.3.1]: https://github.com/taiki-e/const_fn/compare/v0.3.0...v0.3.1
[0.3.0]: https://github.com/taiki-e/const_fn/compare/v0.2.1...v0.3.0
[0.2.1]: https://github.com/taiki-e/const_fn/compare/v0.2.0...v0.2.1
[0.2.0]: https://github.com/taiki-e/const_fn/compare/v0.1.7...v0.2.0
[0.1.7]: https://github.com/taiki-e/const_fn/compare/v0.1.6...v0.1.7
[0.1.6]: https://github.com/taiki-e/const_fn/compare/v0.1.5...v0.1.6
[0.1.5]: https://github.com/taiki-e/const_fn/compare/v0.1.4...v0.1.5
[0.1.4]: https://github.com/taiki-e/const_fn/compare/v0.1.3...v0.1.4
[0.1.3]: https://github.com/taiki-e/const_fn/compare/v0.1.2...v0.1.3
[0.1.2]: https://github.com/taiki-e/const_fn/compare/v0.1.1...v0.1.2
[0.1.1]: https://github.com/taiki-e/const_fn/compare/v0.1.0...v0.1.1
[0.1.0]: https://github.com/taiki-e/const_fn/releases/tag/v0.1.0