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7476ba4c
编写于
5月 20, 2018
作者:
V
varkor
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电子邮件补丁
差异文件
Add semi-exhaustive tests for exhaustiveness
上级
121fa8d4
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2
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2 changed file
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-0
src/test/ui/exhaustive_integer_patterns.rs
src/test/ui/exhaustive_integer_patterns.rs
+105
-0
src/test/ui/exhaustive_integer_patterns.stderr
src/test/ui/exhaustive_integer_patterns.stderr
+39
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src/test/ui/exhaustive_integer_patterns.rs
0 → 100644
浏览文件 @
7476ba4c
// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![feature(exhaustive_integer_patterns)]
#![feature(exclusive_range_pattern)]
#![deny(unreachable_patterns)]
use
std
::{
char
,
usize
,
u8
,
u16
,
u32
,
u64
,
u128
,
isize
,
i8
,
i16
,
i32
,
i64
,
i128
};
fn
main
()
{
let
x
:
u8
=
0
;
// A single range covering the entire domain.
match
x
{
0
..=
255
=>
{}
// ok
}
// A combination of ranges and values.
// These are currently allowed to be overlapping.
match
x
{
0
..=
32
=>
{}
33
=>
{}
34
..
128
=>
{}
100
..=
200
=>
{}
200
=>
{}
//~ ERROR unreachable pattern
201
..=
255
=>
{}
}
// An incomplete set of values.
match
x
{
//~ ERROR non-exhaustive patterns: `128u8...255u8` not covered
0
..
128
=>
{}
}
// A more incomplete set of values.
match
x
{
//~ ERROR non-exhaustive patterns
0
..=
10
=>
{}
20
..=
30
=>
{}
35
=>
{}
70
..
255
=>
{}
}
let
x
:
i8
=
0
;
match
x
{
//~ ERROR non-exhaustive patterns
-
7
=>
{}
-
5
..=
120
=>
{}
-
2
..=
20
=>
{}
//~ ERROR unreachable pattern
125
=>
{}
}
// Let's test other types too!
match
'\
u
{
0
}
'
{
'\
u
{
0
}
'
..=
char
::
MAX
=>
{}
// ok
}
match
0u
size
{
0
..=
usize
::
MAX
=>
{}
// ok
}
match
0u16
{
0
..=
u16
::
MAX
=>
{}
// ok
}
match
0u32
{
0
..=
u32
::
MAX
=>
{}
// ok
}
match
0u64
{
0
..=
u64
::
MAX
=>
{}
// ok
}
match
0u128
{
0
..=
u128
::
MAX
=>
{}
// ok
}
match
0
isize
{
isize
::
MIN
..=
isize
::
MAX
=>
{}
// ok
}
match
0i8
{
-
128
..=
127
=>
{}
// ok
}
match
0i16
{
i16
::
MIN
..=
i16
::
MAX
=>
{}
// ok
}
match
0i32
{
i32
::
MIN
..=
i32
::
MAX
=>
{}
// ok
}
match
0i64
{
i64
::
MIN
..=
i64
::
MAX
=>
{}
// ok
}
match
0
i128
{
i128
::
MIN
..=
i128
::
MAX
=>
{}
// ok
}
}
src/test/ui/exhaustive_integer_patterns.stderr
0 → 100644
浏览文件 @
7476ba4c
error: unreachable pattern
--> $DIR/exhaustive_integer_patterns.rs:32:9
|
LL | 200 => {} //~ ERROR unreachable pattern
| ^^^
|
note: lint level defined here
--> $DIR/exhaustive_integer_patterns.rs:13:9
|
LL | #![deny(unreachable_patterns)]
| ^^^^^^^^^^^^^^^^^^^^
error[E0004]: non-exhaustive patterns: `128u8...255u8` not covered
--> $DIR/exhaustive_integer_patterns.rs:37:11
|
LL | match x { //~ ERROR non-exhaustive patterns: `128u8...255u8` not covered
| ^ pattern `128u8...255u8` not covered
error[E0004]: non-exhaustive patterns: `11u8...20u8`, `30u8...35u8`, `35u8...70u8` and 1 more not covered
--> $DIR/exhaustive_integer_patterns.rs:42:11
|
LL | match x { //~ ERROR non-exhaustive patterns
| ^ patterns `11u8...20u8`, `30u8...35u8`, `35u8...70u8` and 1 more not covered
error: unreachable pattern
--> $DIR/exhaustive_integer_patterns.rs:53:9
|
LL | -2..=20 => {} //~ ERROR unreachable pattern
| ^^^^^^^
error[E0004]: non-exhaustive patterns: `-128i8...-5i8`, `120i8...121i8` and `121i8...127i8` not covered
--> $DIR/exhaustive_integer_patterns.rs:50:11
|
LL | match x { //~ ERROR non-exhaustive patterns
| ^ patterns `-128i8...-5i8`, `120i8...121i8` and `121i8...127i8` not covered
error: aborting due to 5 previous errors
For more information about this error, try `rustc --explain E0004`.
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