mirror of https://github.com/rust-lang/rust
63 lines
1.4 KiB
Rust
63 lines
1.4 KiB
Rust
use self::Direction::{North, East, South, West};
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#[derive(PartialEq, Eq)]
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struct NewBool(bool);
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#[derive(PartialEq, Eq)]
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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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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(Direction::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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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(Direction::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 main() {
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nonexhaustive_1();
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nonexhaustive_2();
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nonexhaustive_3();
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}
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