313 lines
9.5 KiB
Rust
313 lines
9.5 KiB
Rust
// rustfmt-normalize_comments: true
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// Match expressions.
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fn foo() {
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// A match expression.
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match x {
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// Some comment.
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a => foo(),
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b if 0 < 42 => foo(),
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c => {
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// Another comment.
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// Comment.
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an_expression;
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foo()
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}
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Foo(ref bar) => {
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aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
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}
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Pattern1 | Pattern2 | Pattern3 => false,
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Paternnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn |
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Paternnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn => blah,
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Patternnnnnnnnnnnnnnnnnnn |
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Patternnnnnnnnnnnnnnnnnnn |
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Patternnnnnnnnnnnnnnnnnnn |
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Patternnnnnnnnnnnnnnnnnnn => meh,
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Patternnnnnnnnnnnnnnnnnnn |
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Patternnnnnnnnnnnnnnnnnnn if looooooooooooooooooong_guard => meh,
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Patternnnnnnnnnnnnnnnnnnnnnnnnn |
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Patternnnnnnnnnnnnnnnnnnnnnnnnn if looooooooooooooooooooooooooooooooooooooooong_guard => {
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meh
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}
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// Test that earlier patterns can take the guard space
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(aaaa, bbbbb, ccccccc, aaaaa, bbbbbbbb, cccccc, aaaa, bbbbbbbb, cccccc, dddddd) |
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Patternnnnnnnnnnnnnnnnnnnnnnnnn if loooooooooooooooooooooooooooooooooooooooooong_guard => {}
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_ => {}
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ast::PathParameters::AngleBracketedParameters(ref data) if data.lifetimes.len() > 0 ||
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data.types.len() > 0 ||
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data.bindings.len() > 0 => {}
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}
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let whatever = match something {
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/// DOC COMMENT!
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Some(_) => 42,
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// Comment on an attribute.
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#[an_attribute]
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// Comment after an attribute.
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None => 0,
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#[rustfmt_skip]
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Blurb => { }
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};
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}
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// Test that a match on an overflow line is laid out properly.
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fn main() {
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let sub_span =
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match xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx {
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Some(sub_span) => Some(sub_span),
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None => sub_span,
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};
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}
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// Test that one-line bodies align.
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fn main() {
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match r {
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Variableeeeeeeeeeeeeeeeee => {
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("variable", vec!["id", "name", "qualname", "value", "type", "scopeid"], true, true)
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}
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Enummmmmmmmmmmmmmmmmmmmm => {
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("enum", vec!["id", "qualname", "scopeid", "value"], true, true)
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}
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Variantttttttttttttttttttttttt => {
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("variant", vec!["id", "name", "qualname", "type", "value", "scopeid"], true, true)
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}
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};
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match x {
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y => { /*Block with comment. Preserve me.*/ }
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z => {
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stmt();
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}
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}
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}
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fn matches() {
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match 1 {
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-1 => 10,
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1 => 1, // foo
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2 => 2,
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// bar
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3 => 3,
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_ => 0, // baz
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}
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}
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fn match_skip() {
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let _ = match Some(1) {
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#[rustfmt_skip]
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Some( n ) => n,
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None => 1,
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};
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}
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fn issue339() {
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match a {
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b => {}
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c => {}
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d => {}
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e => {}
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// collapsing here is safe
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ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff => {}
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// collapsing here exceeds line length
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ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffg => {
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}
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h => {
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// comment above block
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}
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i => {} // comment below block
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j => {
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// comment inside block
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}
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j2 => {
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// comments inside...
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} // ... and after
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// TODO uncomment when vertical whitespace is handled better
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// k => {
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//
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// // comment with WS above
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// }
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// l => {
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// // comment with ws below
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//
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// }
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m => {}
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n => {}
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o => {}
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p => {
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// Dont collapse me
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}
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q => {}
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r => {}
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s => 0, // s comment
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// t comment
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t => 1,
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u => 2,
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// TODO uncomment when block-support exists
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// v => {
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// } /* funky block
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// * comment */
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// final comment
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}
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}
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fn issue355() {
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match mac {
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a => println!("a", b),
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b => vec![1, 2],
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c => vec!(3; 4),
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d => println!("a", b),
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e => vec![1, 2],
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f => vec!(3; 4),
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h => println!("a", b), // h comment
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i => vec![1, 2], // i comment
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j => vec!(3; 4), // j comment
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// k comment
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k => println!("a", b),
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// l comment
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l => vec![1, 2],
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// m comment
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m => vec!(3; 4),
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// Rewrite splits macro
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nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn => {
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println!("a", b)
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}
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// Rewrite splits macro
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oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo => {
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vec![1, 2]
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}
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// Macro support fails to recognise this macro as splitable
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// We push the whole expr to a new line, TODO split this macro as well
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pppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp => {
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vec!(3; 4)
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}
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// q, r and s: Rewrite splits match arm
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qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq => {
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println!("a", b)
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}
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rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr => {
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vec![1, 2]
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}
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ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss => {
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vec!(3; 4)
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}
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// Funky bracketing styles
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t => println!{"a", b},
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u => vec![1, 2],
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v => vec!{3; 4},
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w => println!["a", b],
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x => vec![1, 2],
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y => vec![3; 4],
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// Brackets with comments
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tc => println!{"a", b}, // comment
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uc => vec![1, 2], // comment
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vc => vec!{3; 4}, // comment
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wc => println!["a", b], // comment
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xc => vec![1, 2], // comment
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yc => vec![3; 4], // comment
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yd => {
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looooooooooooooooooooooooooooooooooooooooooooooooooooooooong_func(aaaaaaaaaa,
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bbbbbbbbbb,
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cccccccccc,
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dddddddddd)
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}
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}
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}
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fn issue280() {
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{
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match x {
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CompressionMode::DiscardNewline |
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CompressionMode::CompressWhitespaceNewline => ch == '\n',
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ast::ItemConst(ref typ, ref expr) => {
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self.process_static_or_const_item(item, &typ, &expr)
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}
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}
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}
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}
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fn issue383() {
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match resolution.last_private {
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LastImport { .. } => false,
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_ => true,
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};
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}
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fn issue507() {
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match 1 {
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1 => unsafe { std::intrinsics::abort() },
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_ => (),
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}
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}
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fn issue508() {
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match s.type_id() {
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Some(NodeTypeId::Element(ElementTypeId::HTMLElement(
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HTMLElementTypeId::HTMLCanvasElement))) => true,
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Some(NodeTypeId::Element(ElementTypeId::HTMLElement(
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HTMLElementTypeId::HTMLObjectElement))) => s.has_object_data(),
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Some(NodeTypeId::Element(_)) => false,
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}
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}
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fn issue496() {
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{
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{
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{
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match def {
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def::DefConst(def_id) |
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def::DefAssociatedConst(def_id) => {
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match const_eval::lookup_const_by_id(cx.tcx, def_id, Some(self.pat.id)) {
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Some(const_expr) => x,
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}
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}
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}
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}
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}
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}
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}
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fn issue494() {
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{
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match stmt.node {
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hir::StmtExpr(ref expr, id) |
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hir::StmtSemi(ref expr, id) => {
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result.push(StmtRef::Mirror(Box::new(Stmt {
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span: stmt.span,
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kind: StmtKind::Expr {
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scope: cx.tcx
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.region_maps
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.node_extent(id),
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expr: expr.to_ref(),
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},
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})))
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}
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}
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}
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}
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fn issue386() {
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match foo {
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BiEq | BiLt | BiLe | BiNe | BiGt | BiGe => true,
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BiAnd | BiOr | BiAdd | BiSub | BiMul | BiDiv | BiRem | BiBitXor | BiBitAnd | BiBitOr |
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BiShl | BiShr => false,
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}
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}
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fn guards() {
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match foo {
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aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa if foooooooooooooo &&
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barrrrrrrrrrrr => {}
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aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa |
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aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa if foooooooooooooo &&
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barrrrrrrrrrrr => {}
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aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
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if fooooooooooooooooooooo &&
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(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb ||
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cccccccccccccccccccccccccccccccccccccccc) => {}
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}
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}
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