mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-15 09:27:25 +00:00
383 lines
8.1 KiB
Rust
383 lines
8.1 KiB
Rust
// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution.
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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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#![allow(clippy::all)]
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#![warn(clippy::cyclomatic_complexity)]
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#![allow(unused)]
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fn main() {
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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if true {
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println!("a");
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}
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}
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#[clippy::cyclomatic_complexity = "0"]
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fn kaboom() {
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let n = 0;
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'a: for i in 0..20 {
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'b: for j in i..20 {
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for k in j..20 {
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if k == 5 {
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break 'b;
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}
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if j == 3 && k == 6 {
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continue 'a;
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}
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if k == j {
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continue;
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}
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println!("bake");
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}
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}
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println!("cake");
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}
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}
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fn bloo() {
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match 42 {
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0 => println!("hi"),
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1 => println!("hai"),
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2 => println!("hey"),
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3 => println!("hallo"),
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4 => println!("hello"),
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5 => println!("salut"),
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6 => println!("good morning"),
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7 => println!("good evening"),
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8 => println!("good afternoon"),
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9 => println!("good night"),
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10 => println!("bonjour"),
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11 => println!("hej"),
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12 => println!("hej hej"),
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13 => println!("greetings earthling"),
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14 => println!("take us to you leader"),
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15 | 17 | 19 | 21 | 23 | 25 | 27 | 29 | 31 | 33 => println!("take us to you leader"),
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35 | 37 | 39 | 41 | 43 | 45 | 47 | 49 | 51 | 53 => println!("there is no undefined behavior"),
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55 | 57 | 59 | 61 | 63 | 65 | 67 | 69 | 71 | 73 => println!("I know borrow-fu"),
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_ => println!("bye"),
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}
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}
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#[clippy::cyclomatic_complexity = "0"]
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fn lots_of_short_circuits() -> bool {
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true && false && true && false && true && false && true
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}
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#[clippy::cyclomatic_complexity = "0"]
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fn lots_of_short_circuits2() -> bool {
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true || false || true || false || true || false || true
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}
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#[clippy::cyclomatic_complexity = "0"]
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fn baa() {
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let x = || match 99 {
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0 => 0,
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1 => 1,
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2 => 2,
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4 => 4,
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6 => 6,
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9 => 9,
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_ => 42,
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};
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if x() == 42 {
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println!("x");
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} else {
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println!("not x");
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}
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}
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#[clippy::cyclomatic_complexity = "0"]
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fn bar() {
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match 99 {
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0 => println!("hi"),
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_ => println!("bye"),
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}
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}
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#[test]
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#[clippy::cyclomatic_complexity = "0"]
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/// Tests are usually complex but simple at the same time. `clippy::cyclomatic_complexity` used to give
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/// lots of false-positives in tests.
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fn dont_warn_on_tests() {
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match 99 {
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0 => println!("hi"),
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_ => println!("bye"),
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}
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}
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#[clippy::cyclomatic_complexity = "0"]
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fn barr() {
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match 99 {
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0 => println!("hi"),
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1 => println!("bla"),
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2 | 3 => println!("blub"),
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_ => println!("bye"),
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}
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}
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#[clippy::cyclomatic_complexity = "0"]
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fn barr2() {
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match 99 {
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0 => println!("hi"),
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1 => println!("bla"),
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2 | 3 => println!("blub"),
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_ => println!("bye"),
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}
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match 99 {
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0 => println!("hi"),
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1 => println!("bla"),
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2 | 3 => println!("blub"),
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_ => println!("bye"),
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}
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}
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#[clippy::cyclomatic_complexity = "0"]
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fn barrr() {
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match 99 {
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0 => println!("hi"),
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1 => panic!("bla"),
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2 | 3 => println!("blub"),
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_ => println!("bye"),
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}
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}
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#[clippy::cyclomatic_complexity = "0"]
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fn barrr2() {
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match 99 {
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0 => println!("hi"),
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1 => panic!("bla"),
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2 | 3 => println!("blub"),
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_ => println!("bye"),
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}
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match 99 {
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0 => println!("hi"),
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1 => panic!("bla"),
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2 | 3 => println!("blub"),
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_ => println!("bye"),
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}
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}
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#[clippy::cyclomatic_complexity = "0"]
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fn barrrr() {
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match 99 {
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0 => println!("hi"),
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1 => println!("bla"),
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2 | 3 => panic!("blub"),
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_ => println!("bye"),
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}
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}
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#[clippy::cyclomatic_complexity = "0"]
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fn barrrr2() {
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match 99 {
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0 => println!("hi"),
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1 => println!("bla"),
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2 | 3 => panic!("blub"),
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_ => println!("bye"),
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}
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match 99 {
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0 => println!("hi"),
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1 => println!("bla"),
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2 | 3 => panic!("blub"),
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_ => println!("bye"),
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}
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}
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#[clippy::cyclomatic_complexity = "0"]
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fn cake() {
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if 4 == 5 {
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println!("yea");
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} else {
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panic!("meh");
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}
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println!("whee");
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}
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#[clippy::cyclomatic_complexity = "0"]
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pub fn read_file(input_path: &str) -> String {
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use std::fs::File;
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use std::io::{Read, Write};
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use std::path::Path;
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let mut file = match File::open(&Path::new(input_path)) {
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Ok(f) => f,
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Err(err) => {
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panic!("Can't open {}: {}", input_path, err);
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}
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};
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let mut bytes = Vec::new();
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match file.read_to_end(&mut bytes) {
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Ok(..) => {},
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Err(_) => {
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panic!("Can't read {}", input_path);
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}
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};
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match String::from_utf8(bytes) {
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Ok(contents) => contents,
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Err(_) => {
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panic!("{} is not UTF-8 encoded", input_path);
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}
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}
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}
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enum Void {}
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#[clippy::cyclomatic_complexity = "0"]
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fn void(void: Void) {
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if true {
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match void {
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}
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}
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}
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#[clippy::cyclomatic_complexity = "0"]
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fn mcarton_sees_all() {
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panic!("meh");
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panic!("möh");
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}
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#[clippy::cyclomatic_complexity = "0"]
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fn try() -> Result<i32, &'static str> {
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match 5 {
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5 => Ok(5),
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_ => return Err("bla"),
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}
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}
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#[clippy::cyclomatic_complexity = "0"]
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fn try_again() -> Result<i32, &'static str> {
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let _ = try!(Ok(42));
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let _ = try!(Ok(43));
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let _ = try!(Ok(44));
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let _ = try!(Ok(45));
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let _ = try!(Ok(46));
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let _ = try!(Ok(47));
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let _ = try!(Ok(48));
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let _ = try!(Ok(49));
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match 5 {
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5 => Ok(5),
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_ => return Err("bla"),
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}
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}
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#[clippy::cyclomatic_complexity = "0"]
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fn early() -> Result<i32, &'static str> {
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return Ok(5);
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return Ok(5);
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return Ok(5);
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return Ok(5);
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return Ok(5);
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return Ok(5);
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return Ok(5);
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return Ok(5);
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return Ok(5);
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}
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#[clippy::cyclomatic_complexity = "0"]
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fn early_ret() -> i32 {
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let a = if true { 42 } else { return 0; };
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let a = if a < 99 { 42 } else { return 0; };
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let a = if a < 99 { 42 } else { return 0; };
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let a = if a < 99 { 42 } else { return 0; };
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let a = if a < 99 { 42 } else { return 0; };
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let a = if a < 99 { 42 } else { return 0; };
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let a = if a < 99 { 42 } else { return 0; };
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let a = if a < 99 { 42 } else { return 0; };
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let a = if a < 99 { 42 } else { return 0; };
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let a = if a < 99 { 42 } else { return 0; };
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let a = if a < 99 { 42 } else { return 0; };
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let a = if a < 99 { 42 } else { return 0; };
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match 5 {
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5 => 5,
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_ => return 6,
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}
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}
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