155 lines
3.1 KiB
Rust
155 lines
3.1 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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#![feature(tool_lints)]
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#[warn(clippy::collapsible_if)]
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fn main() {
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let x = "hello";
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let y = "world";
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if x == "hello" {
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if y == "world" {
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println!("Hello world!");
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}
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}
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if x == "hello" || x == "world" {
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if y == "world" || y == "hello" {
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println!("Hello world!");
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}
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}
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if x == "hello" && x == "world" {
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if y == "world" || y == "hello" {
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println!("Hello world!");
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}
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}
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if x == "hello" || x == "world" {
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if y == "world" && y == "hello" {
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println!("Hello world!");
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}
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}
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if x == "hello" && x == "world" {
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if y == "world" && y == "hello" {
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println!("Hello world!");
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}
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}
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if 42 == 1337 {
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if 'a' != 'A' {
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println!("world!")
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}
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}
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// Collapse `else { if .. }` to `else if ..`
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if x == "hello" {
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print!("Hello ");
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} else {
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if y == "world" {
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println!("world!")
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}
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}
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if x == "hello" {
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print!("Hello ");
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} else {
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if let Some(42) = Some(42) {
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println!("world!")
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}
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}
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if x == "hello" {
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print!("Hello ");
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} else {
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if y == "world" {
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println!("world")
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}
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else {
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println!("!")
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}
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}
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if x == "hello" {
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print!("Hello ");
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} else {
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if let Some(42) = Some(42) {
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println!("world")
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}
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else {
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println!("!")
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}
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}
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if let Some(42) = Some(42) {
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print!("Hello ");
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} else {
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if let Some(42) = Some(42) {
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println!("world")
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}
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else {
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println!("!")
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}
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}
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if let Some(42) = Some(42) {
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print!("Hello ");
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} else {
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if x == "hello" {
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println!("world")
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}
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else {
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println!("!")
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}
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}
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if let Some(42) = Some(42) {
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print!("Hello ");
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} else {
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if let Some(42) = Some(42) {
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println!("world")
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}
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else {
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println!("!")
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}
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}
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// Works because any if with an else statement cannot be collapsed.
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if x == "hello" {
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if y == "world" {
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println!("Hello world!");
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}
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} else {
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println!("Not Hello world");
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}
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if x == "hello" {
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if y == "world" {
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println!("Hello world!");
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} else {
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println!("Hello something else");
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}
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}
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if x == "hello" {
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print!("Hello ");
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if y == "world" {
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println!("world!")
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}
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}
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if true {
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} else {
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assert!(true); // assert! is just an `if`
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}
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}
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