3dcd215740
This breaks code that referred to variant names in the same namespace as
their enum. Reexport the variants in the old location or alter code to
refer to the new locations:
```
pub enum Foo {
A,
B
}
fn main() {
let a = A;
}
```
=>
```
pub use self::Foo::{A, B};
pub enum Foo {
A,
B
}
fn main() {
let a = A;
}
```
or
```
pub enum Foo {
A,
B
}
fn main() {
let a = Foo::A;
}
```
[breaking-change]
110 lines
2.9 KiB
Rust
110 lines
2.9 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use self::Direction::{North, East, South, West};
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struct NewBool(bool);
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enum Direction {
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North,
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East,
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South,
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West
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}
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const TRUE_TRUE: (bool, bool) = (true, true);
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fn nonexhaustive_1() {
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match (true, false) {
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//~^ ERROR non-exhaustive patterns: `(true, false)` not covered
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TRUE_TRUE => (),
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(false, false) => (),
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(false, true) => ()
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}
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}
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fn unreachable_1() {
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match (true, false) {
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TRUE_TRUE => (),
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(false, false) => (),
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(false, true) => (),
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(true, false) => (),
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(true, true) => ()
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//~^ ERROR unreachable pattern
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}
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}
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const NONE: Option<Direction> = None;
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const EAST: Direction = East;
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fn nonexhaustive_2() {
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match Some(Some(North)) {
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//~^ ERROR non-exhaustive patterns: `Some(Some(West))` not covered
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Some(NONE) => (),
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Some(Some(North)) => (),
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Some(Some(EAST)) => (),
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Some(Some(South)) => (),
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None => ()
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}
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}
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fn unreachable_2() {
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match Some(Some(North)) {
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Some(NONE) => (),
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Some(Some(North)) => (),
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Some(Some(EAST)) => (),
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Some(Some(South)) => (),
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Some(Some(West)) => (),
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Some(Some(East)) => (),
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//~^ ERROR unreachable pattern
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None => ()
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}
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}
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const NEW_FALSE: NewBool = NewBool(false);
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struct Foo {
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bar: Option<Direction>,
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baz: NewBool
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}
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const STATIC_FOO: Foo = Foo { bar: None, baz: NEW_FALSE };
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fn nonexhaustive_3() {
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match (Foo { bar: Some(North), baz: NewBool(true) }) {
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//~^ ERROR non-exhaustive patterns: `Foo { bar: Some(North), baz: NewBool(true) }`
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Foo { bar: None, baz: NewBool(true) } => (),
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Foo { bar: _, baz: NEW_FALSE } => (),
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Foo { bar: Some(West), baz: NewBool(true) } => (),
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Foo { bar: Some(South), .. } => (),
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Foo { bar: Some(EAST), .. } => ()
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}
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}
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fn unreachable_3() {
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match (Foo { bar: Some(EAST), baz: NewBool(true) }) {
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Foo { bar: None, baz: NewBool(true) } => (),
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Foo { bar: _, baz: NEW_FALSE } => (),
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Foo { bar: Some(West), baz: NewBool(true) } => (),
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Foo { bar: Some(South), .. } => (),
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Foo { bar: Some(EAST), .. } => (),
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Foo { bar: Some(North), baz: NewBool(true) } => (),
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Foo { bar: Some(EAST), baz: NewBool(false) } => ()
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//~^ ERROR unreachable pattern
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}
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}
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fn main() {
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nonexhaustive_1();
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nonexhaustive_2();
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nonexhaustive_3();
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unreachable_1();
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unreachable_2();
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unreachable_3();
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}
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