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Diffstat (limited to 'src/tools/rustfmt/tests/source/match.rs')
| -rw-r--r-- | src/tools/rustfmt/tests/source/match.rs | 570 |
1 files changed, 570 insertions, 0 deletions
diff --git a/src/tools/rustfmt/tests/source/match.rs b/src/tools/rustfmt/tests/source/match.rs new file mode 100644 index 00000000000..da20517203a --- /dev/null +++ b/src/tools/rustfmt/tests/source/match.rs @@ -0,0 +1,570 @@ +// rustfmt-normalize_comments: true +// Match expressions. + +fn foo() { + // A match expression. + match x { + // Some comment. + a => foo(), + b if 0 < 42 => foo(), + c => { // Another comment. + // Comment. + an_expression; + foo() + } + Foo(ref bar) => + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, + Pattern1 | Pattern2 | Pattern3 => false, + Paternnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn | + Paternnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn => { + blah + } + Patternnnnnnnnnnnnnnnnnnn | + Patternnnnnnnnnnnnnnnnnnn | + Patternnnnnnnnnnnnnnnnnnn | + Patternnnnnnnnnnnnnnnnnnn => meh, + + Patternnnnnnnnnnnnnnnnnnn | + Patternnnnnnnnnnnnnnnnnnn if looooooooooooooooooong_guard => meh, + + Patternnnnnnnnnnnnnnnnnnnnnnnnn | + Patternnnnnnnnnnnnnnnnnnnnnnnnn if looooooooooooooooooooooooooooooooooooooooong_guard => + meh, + + // Test that earlier patterns can take the guard space + (aaaa, bbbbb, ccccccc, aaaaa, bbbbbbbb, cccccc, aaaa, bbbbbbbb, cccccc, dddddd) | + Patternnnnnnnnnnnnnnnnnnnnnnnnn if loooooooooooooooooooooooooooooooooooooooooong_guard => {} + + _ => {} + ast::PathParameters::AngleBracketedParameters(ref data) if data.lifetimes.len() > 0 || + data.types.len() > 0 || + data.bindings.len() > 0 => {} + } + + let whatever = match something { + /// DOC COMMENT! + Some(_) => 42, + // Comment on an attribute. + #[an_attribute] + // Comment after an attribute. + None => 0, + #[rustfmt::skip] + Blurb => { } + }; +} + +// Test that a match on an overflow line is laid out properly. +fn main() { + let sub_span = + match xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx { + Some(sub_span) => Some(sub_span), + None => sub_span, + }; +} + +// Test that one-line bodies align. +fn main() { + match r { + Variableeeeeeeeeeeeeeeeee => ( "variable", + vec!("id", "name", "qualname", + "value", "type", "scopeid"), + true, + true), + Enummmmmmmmmmmmmmmmmmmmm => ("enum", + vec!("id","qualname","scopeid","value"), + true, + true), + Variantttttttttttttttttttttttt => ("variant", + vec!("id", + "name", + "qualname", + "type", + "value", + "scopeid"), + true, + true), + }; + + match x{ + y=>{/*Block with comment. Preserve me.*/ } + z=>{stmt();} } +} + +fn matches() { + match 1 { + -1 => 10, + 1 => 1, // foo + 2 => 2, + // bar + 3 => 3, + _ => 0 // baz + } +} + +fn match_skip() { + let _ = match Some(1) { + #[rustfmt::skip] + Some( n ) => n, + None => 1, + }; +} + +fn issue339() { + match a { + b => {} + c => { } + d => { + } + e => { + + + + } + // collapsing here is safe + ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff => { + } + // collapsing here exceeds line length + ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffg => { + } + h => { // comment above block + } + i => { + } // comment below block + j => { + // comment inside block + } + j2 => { + // comments inside... + } // ... and after + // TODO uncomment when vertical whitespace is handled better + // k => { + // + // // comment with WS above + // } + // l => { + // // comment with ws below + // + // } + m => { + } n => { } o => + { + + } + p => { // Don't collapse me + } q => { } r => + { + + } + s => 0, // s comment + // t comment + t => 1, + u => 2, + v => { + } /* funky block + * comment */ + // final comment + } +} + +fn issue355() { + match mac { + a => println!("a", b), + b => vec!(1, 2), + c => vec!(3; 4), + d => { + println!("a", b) + } + e => { + vec!(1, 2) + } + f => { + vec!(3; 4) + } + h => println!("a", b), // h comment + i => vec!(1, 2), // i comment + j => vec!(3; 4), // j comment + // k comment + k => println!("a", b), + // l comment + l => vec!(1, 2), + // m comment + m => vec!(3; 4), + // Rewrite splits macro + nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn => println!("a", b), + // Rewrite splits macro + oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo => vec!(1, 2), + // Macro support fails to recognise this macro as splittable + // We push the whole expr to a new line, TODO split this macro as well + pppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp => vec!(3; 4), + // q, r and s: Rewrite splits match arm + qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq => println!("a", b), + rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr => vec!(1, 2), + ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss => vec!(3; 4), + // Funky bracketing styles + t => println!{"a", b}, + u => vec!{1, 2}, + v => vec!{3; 4}, + w => println!["a", b], + x => vec![1, 2], + y =>vec![3; 4], + // Brackets with comments + tc => println!{"a", b}, // comment + uc => vec!{1, 2}, // comment + vc =>vec!{3; 4}, // comment + wc =>println!["a", b], // comment + xc => vec![1,2], // comment + yc => vec![3; 4], // comment + yd => + looooooooooooooooooooooooooooooooooooooooooooooooooooooooong_func(aaaaaaaaaa, + bbbbbbbbbb, + cccccccccc, + dddddddddd), + } +} + +fn issue280() { + { + match x { + CompressionMode::DiscardNewline | CompressionMode::CompressWhitespaceNewline => ch == + '\n', + ast::ItemConst(ref typ, ref expr) => self.process_static_or_const_item(item, + &typ, + &expr), + } + } +} + +fn issue383() { + match resolution.last_private {LastImport{..} => false, _ => true}; +} + +fn issue507() { + match 1 { + 1 => unsafe { std::intrinsics::abort() }, + _ => (), + } +} + +fn issue508() { + match s.type_id() { + Some(NodeTypeId::Element(ElementTypeId::HTMLElement( + HTMLElementTypeId::HTMLCanvasElement))) => true, + Some(NodeTypeId::Element(ElementTypeId::HTMLElement( + HTMLElementTypeId::HTMLObjectElement))) => s.has_object_data(), + Some(NodeTypeId::Element(_)) => false, + } +} + +fn issue496() {{{{ + match def { + def::DefConst(def_id) | def::DefAssociatedConst(def_id) => + match const_eval::lookup_const_by_id(cx.tcx, def_id, Some(self.pat.id)) { + Some(const_expr) => { x }}}}}}} + +fn issue494() { + { + match stmt.node { + hir::StmtExpr(ref expr, id) | hir::StmtSemi(ref expr, id) => + result.push( + StmtRef::Mirror( + Box::new(Stmt { span: stmt.span, + kind: StmtKind::Expr { + scope: cx.tcx.region_maps.node_extent(id), + expr: expr.to_ref() } }))), + } + } +} + +fn issue386() { + match foo { + BiEq | BiLt | BiLe | BiNe | BiGt | BiGe => + true, + BiAnd | BiOr | BiAdd | BiSub | BiMul | BiDiv | BiRem | + BiBitXor | BiBitAnd | BiBitOr | BiShl | BiShr => + false, + } +} + +fn guards() { + match foo { + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa if foooooooooooooo && barrrrrrrrrrrr => {} + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa | aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa if foooooooooooooo && barrrrrrrrrrrr => {} + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa + if fooooooooooooooooooooo && + (bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb || cccccccccccccccccccccccccccccccccccccccc) => {} + } +} + +fn issue1371() { + Some(match type_ { + sfEvtClosed => Closed, + sfEvtResized => { + let e = unsafe { *event.size.as_ref() }; + + Resized { + width: e.width, + height: e.height, + } + } + sfEvtLostFocus => LostFocus, + sfEvtGainedFocus => GainedFocus, + sfEvtTextEntered => { + TextEntered { + unicode: unsafe { + ::std::char::from_u32((*event.text.as_ref()).unicode) + .expect("Invalid unicode encountered on TextEntered event") + }, + } + } + sfEvtKeyPressed => { + let e = unsafe { event.key.as_ref() }; + + KeyPressed { + code: unsafe { ::std::mem::transmute(e.code) }, + alt: e.alt.to_bool(), + ctrl: e.control.to_bool(), + shift: e.shift.to_bool(), + system: e.system.to_bool(), + } + } + sfEvtKeyReleased => { + let e = unsafe { event.key.as_ref() }; + + KeyReleased { + code: unsafe { ::std::mem::transmute(e.code) }, + alt: e.alt.to_bool(), + ctrl: e.control.to_bool(), + shift: e.shift.to_bool(), + system: e.system.to_bool(), + } + } + }) +} + +fn issue1395() { + let bar = Some(true); + let foo = Some(true); + let mut x = false; + bar.and_then(|_| { + match foo { + None => None, + Some(b) => { + x = true; + Some(b) + } + } + }); +} + +fn issue1456() { + Ok(Recording { + artists: match reader.evaluate(".//mb:recording/mb:artist-credit/mb:name-credit")? { + Nodeset(nodeset) => { + let res: Result<Vec<ArtistRef>, ReadError> = nodeset + .iter() + .map(|node| { + XPathNodeReader::new(node, &context).and_then(|r| ArtistRef::from_xml(&r)) + }) + .collect(); + res? + } + _ => Vec::new(), + }, + }) +} + +fn issue1460() { + let _ = match foo { + REORDER_BUFFER_CHANGE_INTERNAL_SPEC_INSERT => "internal_spec_insert_internal_spec_insert_internal_spec_insert", + _ => "reorder_something", + }; +} + +fn issue525() { + foobar(f, "{}", match *self { + TaskState::Started => "started", + TaskState::Success => "success", + TaskState::Failed => "failed", + }); +} + +// #1838, #1839 +fn match_with_near_max_width() { + let (this_line_uses_99_characters_and_is_formatted_properly, x012345) = match some_expression { + _ => unimplemented!(), + }; + + let (should_be_formatted_like_the_line_above_using_100_characters, x0) = match some_expression { + _ => unimplemented!(), + }; + + let (should_put_the_brace_on_the_next_line_using_101_characters, x0000) = match some_expression + { + _ => unimplemented!(), + }; + match m { + Variant::Tag | Variant::Tag2 | Variant::Tag3 | Variant::Tag4 | Variant::Tag5 | Variant::Tag6 => + {} + } +} + +fn match_with_trailing_spaces() { + match x { + + Some(..) => 0, + None => 1, + } +} + +fn issue_2099() { + let a = match x { +}; + let b = match x { + + }; + + match x {} +} + +// #2021 +impl<'tcx> Const<'tcx> { + pub fn from_constval<'a>() -> Const<'tcx> { + let val = match *cv { + ConstVal::Variant(_) | ConstVal::Aggregate(..) | ConstVal::Unevaluated(..) => bug!("MIR must not use `{:?}` (aggregates are expanded to MIR rvalues)", cv), + }; + } +} + +// #2151 +fn issue_2151() { + match either { + x => { + + }y => () + } +} + +// #2152 +fn issue_2152() { + match m { + "aaaaaaaaaaaaa" | "bbbbbbbbbbbbb" | "cccccccccccccccccccccccccccccccccccccccccccc" if true => {} + "bind" | "writev" | "readv" | "sendmsg" | "recvmsg" if android && (aarch64 || x86_64) => true, + } +} + +// #2376 +// Preserve block around expressions with condition. +fn issue_2376() { + let mut x = None; + match x { + Some(0) => { + for i in 1..11 { + x = Some(i); + } + } + Some(ref mut y) => { + while *y < 10 { + *y += 1; + } + } + None => { + while let None = x { + x = Some(10); + } + } + } +} + +// #2621 +// Strip leading `|` in match arm patterns +fn issue_2621() { + let x = Foo::A; + match x { + Foo::A => println!("No vert single condition"), + Foo::B | Foo::C => println!("Center vert two conditions"), + | Foo::D => println!("Preceding vert single condition"), + | Foo::E + | Foo::F => println!("Preceding vert over two lines"), + Foo::G | + Foo::H => println!("Trailing vert over two lines"), + // Comment on its own line + | Foo::I => println!("With comment"), // Comment after line + } +} + +fn issue_2377() { + match tok { + Tok::Not + | Tok::BNot + | Tok::Plus + | Tok::Minus + | Tok::PlusPlus + | Tok::MinusMinus + | Tok::Void + | Tok::Delete if prec <= 16 => { + // code here... + } + Tok::TypeOf if prec <= 16 => {} + } +} + +// #3040 +fn issue_3040() { + { + match foo { + DevtoolScriptControlMsg::WantsLiveNotifications(id, to_send) => { + match documents.find_window(id) { + Some(window) => devtools::handle_wants_live_notifications(window.upcast(), to_send), + None => return warn!("Message sent to closed pipeline {}.", id), + } + } + } + } +} + +// #3030 +fn issue_3030() { + match input.trim().parse::<f64>() { + Ok(val) + if !( + // A valid number is the same as what rust considers to be valid, + // except for +1., NaN, and Infinity. + val.is_infinite() || val + .is_nan() || input.ends_with(".") || input.starts_with("+") + ) + => { + } + } +} + +fn issue_3005() { + match *token { + Token::Dimension { + value, ref unit, .. + } if num_context.is_ok(context.parsing_mode, value) => + { + return NoCalcLength::parse_dimension(context, value, unit) + .map(LengthOrPercentage::Length) + .map_err(|()| location.new_unexpected_token_error(token.clone())); + }, + } +} + +// #3774 +fn issue_3774() { + { + { + { + match foo { + Lam(_, _, _) | Pi(_, _, _) | Let(_, _, _, _) | Embed(_) | Var(_) => unreachab(), + Lam(_, _, _) | Pi(_, _, _) | Let(_, _, _, _) | Embed(_) | Var(_) => unreacha!(), + Lam(_, _, _) | Pi(_, _, _) | Let(_, _, _, _) | Embed(_) | Var(_) => unreachabl(), + Lam(_, _, _) | Pi(_, _, _) | Let(_, _, _, _) | Embed(_) | Var(_) => unreachae!(), + Lam(_, _, _) | Pi(_, _, _) | Let(_, _, _, _) | Embed(_) | Var(_) => unreachable(), + Lam(_, _, _) | Pi(_, _, _) | Let(_, _, _, _) | Embed(_) | Var(_) => unreachable!(), + Lam(_, _, _) | Pi(_, _, _) | Let(_, _, _, _) | Embed(_) | Var(_) => rrunreachable!(), + } + } + } + } +} |