Merge pull request #2344 from HMPerson1/svar_to_cfn

Add lint to replace `const`s with `const fn`s
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Oliver Schneider 2018-01-12 14:59:06 +01:00 committed by GitHub
commit b863a00a4e
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#![feature(integer_atomics, i128, i128_type)]
#![allow(blacklisted_name)]
#![deny(replace_consts)]
use std::sync::atomic::*;
use std::sync::{ONCE_INIT, Once};
fn bad() {
// Once
{ let foo = ONCE_INIT; };
// Atomic
{ let foo = ATOMIC_BOOL_INIT; };
{ let foo = ATOMIC_ISIZE_INIT; };
{ let foo = ATOMIC_I8_INIT; };
{ let foo = ATOMIC_I16_INIT; };
{ let foo = ATOMIC_I32_INIT; };
{ let foo = ATOMIC_I64_INIT; };
{ let foo = ATOMIC_USIZE_INIT; };
{ let foo = ATOMIC_U8_INIT; };
{ let foo = ATOMIC_U16_INIT; };
{ let foo = ATOMIC_U32_INIT; };
{ let foo = ATOMIC_U64_INIT; };
// Min
{ let foo = std::isize::MIN; };
{ let foo = std::i8::MIN; };
{ let foo = std::i16::MIN; };
{ let foo = std::i32::MIN; };
{ let foo = std::i64::MIN; };
{ let foo = std::i128::MIN; };
{ let foo = std::usize::MIN; };
{ let foo = std::u8::MIN; };
{ let foo = std::u16::MIN; };
{ let foo = std::u32::MIN; };
{ let foo = std::u64::MIN; };
{ let foo = std::u128::MIN; };
// Max
{ let foo = std::isize::MAX; };
{ let foo = std::i8::MAX; };
{ let foo = std::i16::MAX; };
{ let foo = std::i32::MAX; };
{ let foo = std::i64::MAX; };
{ let foo = std::i128::MAX; };
{ let foo = std::usize::MAX; };
{ let foo = std::u8::MAX; };
{ let foo = std::u16::MAX; };
{ let foo = std::u32::MAX; };
{ let foo = std::u64::MAX; };
{ let foo = std::u128::MAX; };
}
fn good() {
// Once
{ let foo = Once::new(); };
// Atomic
{ let foo = AtomicBool::new(false); };
{ let foo = AtomicIsize::new(0); };
{ let foo = AtomicI8::new(0); };
{ let foo = AtomicI16::new(0); };
{ let foo = AtomicI32::new(0); };
{ let foo = AtomicI64::new(0); };
{ let foo = AtomicUsize::new(0); };
{ let foo = AtomicU8::new(0); };
{ let foo = AtomicU16::new(0); };
{ let foo = AtomicU32::new(0); };
{ let foo = AtomicU64::new(0); };
// Min
{ let foo = isize::min_value(); };
{ let foo = i8::min_value(); };
{ let foo = i16::min_value(); };
{ let foo = i32::min_value(); };
{ let foo = i64::min_value(); };
{ let foo = i128::min_value(); };
{ let foo = usize::min_value(); };
{ let foo = u8::min_value(); };
{ let foo = u16::min_value(); };
{ let foo = u32::min_value(); };
{ let foo = u64::min_value(); };
{ let foo = u128::min_value(); };
// Max
{ let foo = isize::max_value(); };
{ let foo = i8::max_value(); };
{ let foo = i16::max_value(); };
{ let foo = i32::max_value(); };
{ let foo = i64::max_value(); };
{ let foo = i128::max_value(); };
{ let foo = usize::max_value(); };
{ let foo = u8::max_value(); };
{ let foo = u16::max_value(); };
{ let foo = u32::max_value(); };
{ let foo = u64::max_value(); };
{ let foo = u128::max_value(); };
}
fn main() {
bad();
good();
}

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error: using `ATOMIC_BOOL_INIT`
--> $DIR/replace_consts.rs:11:17
|
11 | { let foo = ATOMIC_BOOL_INIT; };
| ^^^^^^^^^^^^^^^^ help: try this: `AtomicBool::new(false)`
|
note: lint level defined here
--> $DIR/replace_consts.rs:3:9
|
3 | #![deny(replace_consts)]
| ^^^^^^^^^^^^^^
error: using `ATOMIC_ISIZE_INIT`
--> $DIR/replace_consts.rs:12:17
|
12 | { let foo = ATOMIC_ISIZE_INIT; };
| ^^^^^^^^^^^^^^^^^ help: try this: `AtomicIsize::new(0)`
error: using `ATOMIC_I8_INIT`
--> $DIR/replace_consts.rs:13:17
|
13 | { let foo = ATOMIC_I8_INIT; };
| ^^^^^^^^^^^^^^ help: try this: `AtomicI8::new(0)`
error: using `ATOMIC_I16_INIT`
--> $DIR/replace_consts.rs:14:17
|
14 | { let foo = ATOMIC_I16_INIT; };
| ^^^^^^^^^^^^^^^ help: try this: `AtomicI16::new(0)`
error: using `ATOMIC_I32_INIT`
--> $DIR/replace_consts.rs:15:17
|
15 | { let foo = ATOMIC_I32_INIT; };
| ^^^^^^^^^^^^^^^ help: try this: `AtomicI32::new(0)`
error: using `ATOMIC_I64_INIT`
--> $DIR/replace_consts.rs:16:17
|
16 | { let foo = ATOMIC_I64_INIT; };
| ^^^^^^^^^^^^^^^ help: try this: `AtomicI64::new(0)`
error: using `ATOMIC_USIZE_INIT`
--> $DIR/replace_consts.rs:17:17
|
17 | { let foo = ATOMIC_USIZE_INIT; };
| ^^^^^^^^^^^^^^^^^ help: try this: `AtomicUsize::new(0)`
error: using `ATOMIC_U8_INIT`
--> $DIR/replace_consts.rs:18:17
|
18 | { let foo = ATOMIC_U8_INIT; };
| ^^^^^^^^^^^^^^ help: try this: `AtomicU8::new(0)`
error: using `ATOMIC_U16_INIT`
--> $DIR/replace_consts.rs:19:17
|
19 | { let foo = ATOMIC_U16_INIT; };
| ^^^^^^^^^^^^^^^ help: try this: `AtomicU16::new(0)`
error: using `ATOMIC_U32_INIT`
--> $DIR/replace_consts.rs:20:17
|
20 | { let foo = ATOMIC_U32_INIT; };
| ^^^^^^^^^^^^^^^ help: try this: `AtomicU32::new(0)`
error: using `ATOMIC_U64_INIT`
--> $DIR/replace_consts.rs:21:17
|
21 | { let foo = ATOMIC_U64_INIT; };
| ^^^^^^^^^^^^^^^ help: try this: `AtomicU64::new(0)`
error: using `MIN`
--> $DIR/replace_consts.rs:23:17
|
23 | { let foo = std::isize::MIN; };
| ^^^^^^^^^^^^^^^ help: try this: `isize::min_value()`
error: using `MIN`
--> $DIR/replace_consts.rs:24:17
|
24 | { let foo = std::i8::MIN; };
| ^^^^^^^^^^^^ help: try this: `i8::min_value()`
error: using `MIN`
--> $DIR/replace_consts.rs:25:17
|
25 | { let foo = std::i16::MIN; };
| ^^^^^^^^^^^^^ help: try this: `i16::min_value()`
error: using `MIN`
--> $DIR/replace_consts.rs:26:17
|
26 | { let foo = std::i32::MIN; };
| ^^^^^^^^^^^^^ help: try this: `i32::min_value()`
error: using `MIN`
--> $DIR/replace_consts.rs:27:17
|
27 | { let foo = std::i64::MIN; };
| ^^^^^^^^^^^^^ help: try this: `i64::min_value()`
error: using `MIN`
--> $DIR/replace_consts.rs:28:17
|
28 | { let foo = std::i128::MIN; };
| ^^^^^^^^^^^^^^ help: try this: `i128::min_value()`
error: using `MIN`
--> $DIR/replace_consts.rs:29:17
|
29 | { let foo = std::usize::MIN; };
| ^^^^^^^^^^^^^^^ help: try this: `usize::min_value()`
error: using `MIN`
--> $DIR/replace_consts.rs:30:17
|
30 | { let foo = std::u8::MIN; };
| ^^^^^^^^^^^^ help: try this: `u8::min_value()`
error: using `MIN`
--> $DIR/replace_consts.rs:31:17
|
31 | { let foo = std::u16::MIN; };
| ^^^^^^^^^^^^^ help: try this: `u16::min_value()`
error: using `MIN`
--> $DIR/replace_consts.rs:32:17
|
32 | { let foo = std::u32::MIN; };
| ^^^^^^^^^^^^^ help: try this: `u32::min_value()`
error: using `MIN`
--> $DIR/replace_consts.rs:33:17
|
33 | { let foo = std::u64::MIN; };
| ^^^^^^^^^^^^^ help: try this: `u64::min_value()`
error: using `MIN`
--> $DIR/replace_consts.rs:34:17
|
34 | { let foo = std::u128::MIN; };
| ^^^^^^^^^^^^^^ help: try this: `u128::min_value()`
error: using `MAX`
--> $DIR/replace_consts.rs:36:17
|
36 | { let foo = std::isize::MAX; };
| ^^^^^^^^^^^^^^^ help: try this: `isize::max_value()`
error: using `MAX`
--> $DIR/replace_consts.rs:37:17
|
37 | { let foo = std::i8::MAX; };
| ^^^^^^^^^^^^ help: try this: `i8::max_value()`
error: using `MAX`
--> $DIR/replace_consts.rs:38:17
|
38 | { let foo = std::i16::MAX; };
| ^^^^^^^^^^^^^ help: try this: `i16::max_value()`
error: using `MAX`
--> $DIR/replace_consts.rs:39:17
|
39 | { let foo = std::i32::MAX; };
| ^^^^^^^^^^^^^ help: try this: `i32::max_value()`
error: using `MAX`
--> $DIR/replace_consts.rs:40:17
|
40 | { let foo = std::i64::MAX; };
| ^^^^^^^^^^^^^ help: try this: `i64::max_value()`
error: using `MAX`
--> $DIR/replace_consts.rs:41:17
|
41 | { let foo = std::i128::MAX; };
| ^^^^^^^^^^^^^^ help: try this: `i128::max_value()`
error: using `MAX`
--> $DIR/replace_consts.rs:42:17
|
42 | { let foo = std::usize::MAX; };
| ^^^^^^^^^^^^^^^ help: try this: `usize::max_value()`
error: using `MAX`
--> $DIR/replace_consts.rs:43:17
|
43 | { let foo = std::u8::MAX; };
| ^^^^^^^^^^^^ help: try this: `u8::max_value()`
error: using `MAX`
--> $DIR/replace_consts.rs:44:17
|
44 | { let foo = std::u16::MAX; };
| ^^^^^^^^^^^^^ help: try this: `u16::max_value()`
error: using `MAX`
--> $DIR/replace_consts.rs:45:17
|
45 | { let foo = std::u32::MAX; };
| ^^^^^^^^^^^^^ help: try this: `u32::max_value()`
error: using `MAX`
--> $DIR/replace_consts.rs:46:17
|
46 | { let foo = std::u64::MAX; };
| ^^^^^^^^^^^^^ help: try this: `u64::max_value()`
error: using `MAX`
--> $DIR/replace_consts.rs:47:17
|
47 | { let foo = std::u128::MAX; };
| ^^^^^^^^^^^^^^ help: try this: `u128::max_value()`