rust/src/test/compile-fail/non-exhaustive-pattern-witness.rs

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2014-06-19 13:55:12 -05:00
// Copyright 2014 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(struct_variant)]
struct Foo {
first: bool,
second: Option<[uint, ..4]>
}
enum Color {
Red,
Green,
CustomRGBA { a: bool, r: u8, g: u8, b: u8 }
}
fn struct_with_a_nested_enum_and_vector() {
match Foo { first: true, second: None } {
//~^ ERROR non-exhaustive patterns: `Foo{first: false, second: Some([_, _, _, _])}` not covered
Foo { first: true, second: None } => (),
Foo { first: true, second: Some(_) } => (),
Foo { first: false, second: None } => (),
Foo { first: false, second: Some([1u, 2u, 3u, 4u]) } => ()
}
}
fn enum_with_multiple_missing_variants() {
match Red {
//~^ ERROR non-exhaustive patterns: `Red` not covered
CustomRGBA { .. } => ()
}
}
fn enum_struct_variant() {
match Red {
//~^ ERROR non-exhaustive patterns: `CustomRGBA{a: true, r: _, g: _, b: _}` not covered
Red => (),
Green => (),
CustomRGBA { a: false, r: _, g: _, b: 0 } => (),
CustomRGBA { a: false, r: _, g: _, b: _ } => ()
}
}
enum Enum {
First,
Second(bool)
}
fn vectors_with_nested_enums() {
let x: &'static [Enum] = [First, Second(false)];
match x {
//~^ ERROR non-exhaustive patterns: `[Second(true), Second(false)]` not covered
[] => (),
[_] => (),
[First, _] => (),
[Second(true), First] => (),
[Second(true), Second(true)] => (),
[Second(false), _] => (),
[_, _, ..tail, _] => ()
}
}
fn main() {
struct_with_a_nested_enum_and_vector();
enum_with_multiple_missing_variants();
enum_struct_variant();
}