use hir::{ Adt, AsAssocItem, AssocItemContainer, FieldSource, HasAttrs, HasSource, HirDisplay, Module, ModuleDef, ModuleSource, Semantics, }; use ide_db::base_db::SourceDatabase; use ide_db::{ defs::{Definition, NameClass, NameRefClass}, RootDatabase, }; use itertools::Itertools; use stdx::format_to; use syntax::{ast, match_ast, AstNode, SyntaxKind::*, SyntaxToken, TokenAtOffset, T}; use test_utils::mark; use crate::{ display::{macro_label, ShortLabel, TryToNav}, doc_links::{remove_links, rewrite_links}, markdown_remove::remove_markdown, markup::Markup, runnables::runnable, FileId, FilePosition, NavigationTarget, RangeInfo, Runnable, }; #[derive(Clone, Debug, PartialEq, Eq)] pub struct HoverConfig { pub implementations: bool, pub run: bool, pub debug: bool, pub goto_type_def: bool, pub links_in_hover: bool, pub markdown: bool, } impl Default for HoverConfig { fn default() -> Self { Self { implementations: true, run: true, debug: true, goto_type_def: true, links_in_hover: true, markdown: true, } } } impl HoverConfig { pub const NO_ACTIONS: Self = Self { implementations: false, run: false, debug: false, goto_type_def: false, links_in_hover: true, markdown: true, }; pub fn any(&self) -> bool { self.implementations || self.runnable() || self.goto_type_def } pub fn none(&self) -> bool { !self.any() } pub fn runnable(&self) -> bool { self.run || self.debug } } #[derive(Debug, Clone)] pub enum HoverAction { Runnable(Runnable), Implementaion(FilePosition), GoToType(Vec), } #[derive(Debug, Clone, Eq, PartialEq)] pub struct HoverGotoTypeData { pub mod_path: String, pub nav: NavigationTarget, } /// Contains the results when hovering over an item #[derive(Debug, Default)] pub struct HoverResult { pub markup: Markup, pub actions: Vec, } // Feature: Hover // // Shows additional information, like type of an expression or documentation for definition when "focusing" code. // Focusing is usually hovering with a mouse, but can also be triggered with a shortcut. pub(crate) fn hover( db: &RootDatabase, position: FilePosition, links_in_hover: bool, markdown: bool, ) -> Option> { let sema = Semantics::new(db); let file = sema.parse(position.file_id).syntax().clone(); let token = pick_best(file.token_at_offset(position.offset))?; let token = sema.descend_into_macros(token); let mut res = HoverResult::default(); let node = token.parent(); let definition = match_ast! { match node { ast::Name(name) => NameClass::classify(&sema, &name).and_then(|d| d.defined(sema.db)), ast::NameRef(name_ref) => NameRefClass::classify(&sema, &name_ref).map(|d| d.referenced(sema.db)), ast::Lifetime(lifetime) => NameClass::classify_lifetime(&sema, &lifetime) .map_or_else(|| NameRefClass::classify_lifetime(&sema, &lifetime).map(|d| d.referenced(sema.db)), |d| d.defined(sema.db)), _ => None, } }; if let Some(definition) = definition { if let Some(markup) = hover_for_definition(db, definition) { let markup = if !markdown { remove_markdown(&markup.as_str()) } else if links_in_hover { rewrite_links(db, &markup.as_str(), &definition) } else { remove_links(&markup.as_str()) }; res.markup = Markup::from(markup); if let Some(action) = show_implementations_action(db, definition) { res.actions.push(action); } if let Some(action) = runnable_action(&sema, definition, position.file_id) { res.actions.push(action); } if let Some(action) = goto_type_action(db, definition) { res.actions.push(action); } let range = sema.original_range(&node).range; return Some(RangeInfo::new(range, res)); } } if token.kind() == syntax::SyntaxKind::COMMENT { // don't highlight the entire parent node on comment hover return None; } let node = token.ancestors().find(|n| { ast::Expr::can_cast(n.kind()) || ast::Pat::can_cast(n.kind()) || ast::SelfParam::can_cast(n.kind()) })?; let ty = match_ast! { match node { ast::Expr(it) => sema.type_of_expr(&it)?, ast::Pat(it) => sema.type_of_pat(&it)?, ast::SelfParam(self_param) => sema.type_of_self(&self_param)?, // If this node is a MACRO_CALL, it means that `descend_into_macros` failed to resolve. // (e.g expanding a builtin macro). So we give up here. ast::MacroCall(_it) => return None, _ => return None, } }; res.markup = if markdown { Markup::fenced_block(&ty.display(db)) } else { ty.display(db).to_string().into() }; let range = sema.original_range(&node).range; Some(RangeInfo::new(range, res)) } fn show_implementations_action(db: &RootDatabase, def: Definition) -> Option { fn to_action(nav_target: NavigationTarget) -> HoverAction { HoverAction::Implementaion(FilePosition { file_id: nav_target.file_id, offset: nav_target.focus_or_full_range().start(), }) } match def { Definition::ModuleDef(it) => match it { ModuleDef::Adt(Adt::Struct(it)) => Some(to_action(it.try_to_nav(db)?)), ModuleDef::Adt(Adt::Union(it)) => Some(to_action(it.try_to_nav(db)?)), ModuleDef::Adt(Adt::Enum(it)) => Some(to_action(it.try_to_nav(db)?)), ModuleDef::Trait(it) => Some(to_action(it.try_to_nav(db)?)), _ => None, }, _ => None, } } fn runnable_action( sema: &Semantics, def: Definition, file_id: FileId, ) -> Option { match def { Definition::ModuleDef(it) => match it { ModuleDef::Module(it) => match it.definition_source(sema.db).value { ModuleSource::Module(it) => runnable(&sema, it.syntax().clone(), file_id) .map(|it| HoverAction::Runnable(it)), _ => None, }, ModuleDef::Function(it) => { #[allow(deprecated)] let src = it.source(sema.db)?; if src.file_id != file_id.into() { mark::hit!(hover_macro_generated_struct_fn_doc_comment); mark::hit!(hover_macro_generated_struct_fn_doc_attr); return None; } runnable(&sema, src.value.syntax().clone(), file_id) .map(|it| HoverAction::Runnable(it)) } _ => None, }, _ => None, } } fn goto_type_action(db: &RootDatabase, def: Definition) -> Option { match def { Definition::Local(it) => { let mut targets: Vec = Vec::new(); let mut push_new_def = |item: ModuleDef| { if !targets.contains(&item) { targets.push(item); } }; it.ty(db).walk(db, |t| { if let Some(adt) = t.as_adt() { push_new_def(adt.into()); } else if let Some(trait_) = t.as_dyn_trait() { push_new_def(trait_.into()); } else if let Some(traits) = t.as_impl_traits(db) { traits.into_iter().for_each(|it| push_new_def(it.into())); } else if let Some(trait_) = t.as_associated_type_parent_trait(db) { push_new_def(trait_.into()); } }); let targets = targets .into_iter() .filter_map(|it| { Some(HoverGotoTypeData { mod_path: render_path( db, it.module(db)?, it.name(db).map(|name| name.to_string()), ), nav: it.try_to_nav(db)?, }) }) .collect(); Some(HoverAction::GoToType(targets)) } _ => None, } } fn hover_markup( docs: Option, desc: Option, mod_path: Option, ) -> Option { match desc { Some(desc) => { let mut buf = String::new(); if let Some(mod_path) = mod_path { if !mod_path.is_empty() { format_to!(buf, "```rust\n{}\n```\n\n", mod_path); } } format_to!(buf, "```rust\n{}\n```", desc); if let Some(doc) = docs { format_to!(buf, "\n___\n\n{}", doc); } Some(buf.into()) } None => docs.map(Markup::from), } } fn definition_owner_name(db: &RootDatabase, def: &Definition) -> Option { match def { Definition::Field(f) => Some(f.parent_def(db).name(db)), Definition::Local(l) => l.parent(db).name(db), Definition::ModuleDef(md) => match md { ModuleDef::Function(f) => match f.as_assoc_item(db)?.container(db) { AssocItemContainer::Trait(t) => Some(t.name(db)), AssocItemContainer::Impl(i) => i.target_ty(db).as_adt().map(|adt| adt.name(db)), }, ModuleDef::Variant(e) => Some(e.parent_enum(db).name(db)), _ => None, }, _ => None, } .map(|name| name.to_string()) } fn render_path(db: &RootDatabase, module: Module, item_name: Option) -> String { let crate_name = db.crate_graph()[module.krate().into()].display_name.as_ref().map(|it| it.to_string()); let module_path = module .path_to_root(db) .into_iter() .rev() .flat_map(|it| it.name(db).map(|name| name.to_string())); crate_name.into_iter().chain(module_path).chain(item_name).join("::") } fn definition_mod_path(db: &RootDatabase, def: &Definition) -> Option { def.module(db).map(|module| render_path(db, module, definition_owner_name(db, def))) } fn hover_for_definition(db: &RootDatabase, def: Definition) -> Option { let mod_path = definition_mod_path(db, &def); return match def { Definition::Macro(it) => { let label = macro_label(&it.source(db)?.value); from_def_source_labeled(db, it, Some(label), mod_path) } Definition::Field(def) => { #[allow(deprecated)] let src = def.source(db)?.value; if let FieldSource::Named(it) = src { from_def_source_labeled(db, def, it.short_label(), mod_path) } else { None } } Definition::ModuleDef(it) => match it { ModuleDef::Module(it) => from_def_source_labeled( db, it, match it.definition_source(db).value { ModuleSource::Module(it) => it.short_label(), ModuleSource::SourceFile(it) => it.short_label(), }, mod_path, ), ModuleDef::Function(it) => from_def_source(db, it, mod_path), ModuleDef::Adt(Adt::Struct(it)) => from_def_source(db, it, mod_path), ModuleDef::Adt(Adt::Union(it)) => from_def_source(db, it, mod_path), ModuleDef::Adt(Adt::Enum(it)) => from_def_source(db, it, mod_path), ModuleDef::Variant(it) => from_def_source(db, it, mod_path), ModuleDef::Const(it) => from_def_source(db, it, mod_path), ModuleDef::Static(it) => from_def_source(db, it, mod_path), ModuleDef::Trait(it) => from_def_source(db, it, mod_path), ModuleDef::TypeAlias(it) => from_def_source(db, it, mod_path), ModuleDef::BuiltinType(it) => Some(Markup::fenced_block(&it)), }, Definition::Local(it) => Some(Markup::fenced_block(&it.ty(db).display(db))), Definition::SelfType(impl_def) => { impl_def.target_ty(db).as_adt().and_then(|adt| match adt { Adt::Struct(it) => from_def_source(db, it, mod_path), Adt::Union(it) => from_def_source(db, it, mod_path), Adt::Enum(it) => from_def_source(db, it, mod_path), }) } Definition::Label(it) => Some(Markup::fenced_block(&it.name(db))), Definition::LifetimeParam(it) => Some(Markup::fenced_block(&it.name(db))), Definition::TypeParam(type_param) => Some(Markup::fenced_block(&type_param.display(db))), Definition::ConstParam(_) => { // FIXME: Hover for generic const param None } }; fn from_def_source(db: &RootDatabase, def: D, mod_path: Option) -> Option where D: HasSource + HasAttrs + Copy, A: ShortLabel, { #[allow(deprecated)] let short_label = def.source(db)?.value.short_label(); from_def_source_labeled(db, def, short_label, mod_path) } fn from_def_source_labeled( db: &RootDatabase, def: D, short_label: Option, mod_path: Option, ) -> Option where D: HasAttrs, { let docs = def.attrs(db).docs().map(Into::into); hover_markup(docs, short_label, mod_path) } } fn pick_best(tokens: TokenAtOffset) -> Option { return tokens.max_by_key(priority); fn priority(n: &SyntaxToken) -> usize { match n.kind() { IDENT | INT_NUMBER | LIFETIME_IDENT => 3, T!['('] | T![')'] => 2, kind if kind.is_trivia() => 0, _ => 1, } } } #[cfg(test)] mod tests { use expect_test::{expect, Expect}; use ide_db::base_db::FileLoader; use crate::fixture; use super::*; fn check_hover_no_result(ra_fixture: &str) { let (analysis, position) = fixture::position(ra_fixture); assert!(analysis.hover(position, true, true).unwrap().is_none()); } fn check(ra_fixture: &str, expect: Expect) { let (analysis, position) = fixture::position(ra_fixture); let hover = analysis.hover(position, true, true).unwrap().unwrap(); let content = analysis.db.file_text(position.file_id); let hovered_element = &content[hover.range]; let actual = format!("*{}*\n{}\n", hovered_element, hover.info.markup); expect.assert_eq(&actual) } fn check_hover_no_links(ra_fixture: &str, expect: Expect) { let (analysis, position) = fixture::position(ra_fixture); let hover = analysis.hover(position, false, true).unwrap().unwrap(); let content = analysis.db.file_text(position.file_id); let hovered_element = &content[hover.range]; let actual = format!("*{}*\n{}\n", hovered_element, hover.info.markup); expect.assert_eq(&actual) } fn check_hover_no_markdown(ra_fixture: &str, expect: Expect) { let (analysis, position) = fixture::position(ra_fixture); let hover = analysis.hover(position, true, false).unwrap().unwrap(); let content = analysis.db.file_text(position.file_id); let hovered_element = &content[hover.range]; let actual = format!("*{}*\n{}\n", hovered_element, hover.info.markup); expect.assert_eq(&actual) } fn check_actions(ra_fixture: &str, expect: Expect) { let (analysis, position) = fixture::position(ra_fixture); let hover = analysis.hover(position, true, true).unwrap().unwrap(); expect.assert_debug_eq(&hover.info.actions) } #[test] fn hover_shows_type_of_an_expression() { check( r#" pub fn foo() -> u32 { 1 } fn main() { let foo_test = foo()<|>; } "#, expect![[r#" *foo()* ```rust u32 ``` "#]], ); } #[test] fn hover_remove_markdown_if_configured() { check_hover_no_markdown( r#" pub fn foo() -> u32 { 1 } fn main() { let foo_test = foo()<|>; } "#, expect![[r#" *foo()* u32 "#]], ); } #[test] fn hover_shows_long_type_of_an_expression() { check( r#" struct Scan { a: A, b: B, c: C } struct Iter { inner: I } enum Option { Some(T), None } struct OtherStruct { i: T } fn scan(a: A, b: B, c: C) -> Iter, B, C>> { Iter { inner: Scan { a, b, c } } } fn main() { let num: i32 = 55; let closure = |memo: &mut u32, value: &u32, _another: &mut u32| -> Option { Option::Some(*memo + value) }; let number = 5u32; let mut iter<|> = scan(OtherStruct { i: num }, closure, number); } "#, expect![[r#" *iter* ```rust Iter>, |&mut u32, &u32, &mut u32| -> Option, u32>> ``` "#]], ); } #[test] fn hover_shows_fn_signature() { // Single file with result check( r#" pub fn foo() -> u32 { 1 } fn main() { let foo_test = fo<|>o(); } "#, expect![[r#" *foo* ```rust test ``` ```rust pub fn foo() -> u32 ``` "#]], ); // Multiple candidates but results are ambiguous. check( r#" //- /a.rs pub fn foo() -> u32 { 1 } //- /b.rs pub fn foo() -> &str { "" } //- /c.rs pub fn foo(a: u32, b: u32) {} //- /main.rs mod a; mod b; mod c; fn main() { let foo_test = fo<|>o(); } "#, expect![[r#" *foo* ```rust {unknown} ``` "#]], ); } #[test] fn hover_shows_fn_signature_with_type_params() { check( r#" pub fn foo<'a, T: AsRef>(b: &'a T) -> &'a str { } fn main() { let foo_test = fo<|>o(); } "#, expect![[r#" *foo* ```rust test ``` ```rust pub fn foo<'a, T: AsRef>(b: &'a T) -> &'a str ``` "#]], ); } #[test] fn hover_shows_fn_signature_on_fn_name() { check( r#" pub fn foo<|>(a: u32, b: u32) -> u32 {} fn main() { } "#, expect![[r#" *foo* ```rust test ``` ```rust pub fn foo(a: u32, b: u32) -> u32 ``` "#]], ); } #[test] fn hover_shows_fn_doc() { check( r#" /// # Example /// ``` /// # use std::path::Path; /// # /// foo(Path::new("hello, world!")) /// ``` pub fn foo<|>(_: &Path) {} fn main() { } "#, expect![[r##" *foo* ```rust test ``` ```rust pub fn foo(_: &Path) ``` --- # Example ``` # use std::path::Path; # foo(Path::new("hello, world!")) ``` "##]], ); } #[test] fn hover_shows_fn_doc_attr_raw_string() { check( r##" #[doc = r#"Raw string doc attr"#] pub fn foo<|>(_: &Path) {} fn main() { } "##, expect![[r##" *foo* ```rust test ``` ```rust pub fn foo(_: &Path) ``` --- Raw string doc attr "##]], ); } #[test] fn hover_shows_struct_field_info() { // Hovering over the field when instantiating check( r#" struct Foo { field_a: u32 } fn main() { let foo = Foo { field_a<|>: 0, }; } "#, expect![[r#" *field_a* ```rust test::Foo ``` ```rust field_a: u32 ``` "#]], ); // Hovering over the field in the definition check( r#" struct Foo { field_a<|>: u32 } fn main() { let foo = Foo { field_a: 0 }; } "#, expect![[r#" *field_a* ```rust test::Foo ``` ```rust field_a: u32 ``` "#]], ); } #[test] fn hover_const_static() { check( r#"const foo<|>: u32 = 123;"#, expect![[r#" *foo* ```rust test ``` ```rust const foo: u32 = 123 ``` "#]], ); check( r#"static foo<|>: u32 = 456;"#, expect![[r#" *foo* ```rust test ``` ```rust static foo: u32 ``` "#]], ); } #[test] fn hover_default_generic_types() { check( r#" struct Test { k: K, t: T } fn main() { let zz<|> = Test { t: 23u8, k: 33 }; }"#, expect![[r#" *zz* ```rust Test ``` "#]], ); } #[test] fn hover_some() { check( r#" enum Option { Some(T) } use Option::Some; fn main() { So<|>me(12); } "#, expect![[r#" *Some* ```rust test::Option ``` ```rust Some ``` "#]], ); check( r#" enum Option { Some(T) } use Option::Some; fn main() { let b<|>ar = Some(12); } "#, expect![[r#" *bar* ```rust Option ``` "#]], ); } #[test] fn hover_enum_variant() { check( r#" enum Option { /// The None variant Non<|>e } "#, expect![[r#" *None* ```rust test::Option ``` ```rust None ``` --- The None variant "#]], ); check( r#" enum Option { /// The Some variant Some(T) } fn main() { let s = Option::Som<|>e(12); } "#, expect![[r#" *Some* ```rust test::Option ``` ```rust Some ``` --- The Some variant "#]], ); } #[test] fn hover_for_local_variable() { check( r#"fn func(foo: i32) { fo<|>o; }"#, expect![[r#" *foo* ```rust i32 ``` "#]], ) } #[test] fn hover_for_local_variable_pat() { check( r#"fn func(fo<|>o: i32) {}"#, expect![[r#" *foo* ```rust i32 ``` "#]], ) } #[test] fn hover_local_var_edge() { check( r#"fn func(foo: i32) { if true { <|>foo; }; }"#, expect![[r#" *foo* ```rust i32 ``` "#]], ) } #[test] fn hover_for_param_edge() { check( r#"fn func(<|>foo: i32) {}"#, expect![[r#" *foo* ```rust i32 ``` "#]], ) } #[test] fn hover_for_param_with_multiple_traits() { check( r#"trait Deref { type Target: ?Sized; } trait DerefMut { type Target: ?Sized; } fn f(_x<|>: impl Deref + DerefMut) {}"#, expect![[r#" *_x* ```rust impl Deref + DerefMut ``` "#]], ) } #[test] fn test_hover_infer_associated_method_result() { check( r#" struct Thing { x: u32 } impl Thing { fn new() -> Thing { Thing { x: 0 } } } fn main() { let foo_<|>test = Thing::new(); } "#, expect![[r#" *foo_test* ```rust Thing ``` "#]], ) } #[test] fn test_hover_infer_associated_method_exact() { check( r#" mod wrapper { struct Thing { x: u32 } impl Thing { fn new() -> Thing { Thing { x: 0 } } } } fn main() { let foo_test = wrapper::Thing::new<|>(); } "#, expect![[r#" *new* ```rust test::wrapper::Thing ``` ```rust fn new() -> Thing ``` "#]], ) } #[test] fn test_hover_infer_associated_const_in_pattern() { check( r#" struct X; impl X { const C: u32 = 1; } fn main() { match 1 { X::C<|> => {}, 2 => {}, _ => {} }; } "#, expect![[r#" *C* ```rust test ``` ```rust const C: u32 = 1 ``` "#]], ) } #[test] fn test_hover_self() { check( r#" struct Thing { x: u32 } impl Thing { fn new() -> Self { Self<|> { x: 0 } } } "#, expect![[r#" *Self* ```rust test ``` ```rust struct Thing ``` "#]], ); check( r#" struct Thing { x: u32 } impl Thing { fn new() -> Self<|> { Self { x: 0 } } } "#, expect![[r#" *Self* ```rust test ``` ```rust struct Thing ``` "#]], ); check( r#" enum Thing { A } impl Thing { pub fn new() -> Self<|> { Thing::A } } "#, expect![[r#" *Self* ```rust test ``` ```rust enum Thing ``` "#]], ); check( r#" enum Thing { A } impl Thing { pub fn thing(a: Self<|>) {} } "#, expect![[r#" *Self* ```rust test ``` ```rust enum Thing ``` "#]], ); } #[test] fn test_hover_shadowing_pat() { check( r#" fn x() {} fn y() { let x = 0i32; x<|>; } "#, expect![[r#" *x* ```rust i32 ``` "#]], ) } #[test] fn test_hover_macro_invocation() { check( r#" macro_rules! foo { () => {} } fn f() { fo<|>o!(); } "#, expect![[r#" *foo* ```rust test ``` ```rust macro_rules! foo ``` "#]], ) } #[test] fn test_hover_tuple_field() { check( r#"struct TS(String, i32<|>);"#, expect![[r#" *i32* ```rust i32 ``` "#]], ) } #[test] fn test_hover_through_macro() { check( r#" macro_rules! id { ($($tt:tt)*) => { $($tt)* } } fn foo() {} id! { fn bar() { fo<|>o(); } } "#, expect![[r#" *foo* ```rust test ``` ```rust fn foo() ``` "#]], ); } #[test] fn test_hover_through_expr_in_macro() { check( r#" macro_rules! id { ($($tt:tt)*) => { $($tt)* } } fn foo(bar:u32) { let a = id!(ba<|>r); } "#, expect![[r#" *bar* ```rust u32 ``` "#]], ); } #[test] fn test_hover_through_expr_in_macro_recursive() { check( r#" macro_rules! id_deep { ($($tt:tt)*) => { $($tt)* } } macro_rules! id { ($($tt:tt)*) => { id_deep!($($tt)*) } } fn foo(bar:u32) { let a = id!(ba<|>r); } "#, expect![[r#" *bar* ```rust u32 ``` "#]], ); } #[test] fn test_hover_through_func_in_macro_recursive() { check( r#" macro_rules! id_deep { ($($tt:tt)*) => { $($tt)* } } macro_rules! id { ($($tt:tt)*) => { id_deep!($($tt)*) } } fn bar() -> u32 { 0 } fn foo() { let a = id!([0u32, bar(<|>)] ); } "#, expect![[r#" *bar()* ```rust u32 ``` "#]], ); } #[test] fn test_hover_through_literal_string_in_macro() { check( r#" macro_rules! arr { ($($tt:tt)*) => { [$($tt)*)] } } fn foo() { let mastered_for_itunes = ""; let _ = arr!("Tr<|>acks", &mastered_for_itunes); } "#, expect![[r#" *"Tracks"* ```rust &str ``` "#]], ); } #[test] fn test_hover_through_assert_macro() { check( r#" #[rustc_builtin_macro] macro_rules! assert {} fn bar() -> bool { true } fn foo() { assert!(ba<|>r()); } "#, expect![[r#" *bar* ```rust test ``` ```rust fn bar() -> bool ``` "#]], ); } #[test] fn test_hover_through_literal_string_in_builtin_macro() { check_hover_no_result( r#" #[rustc_builtin_macro] macro_rules! format {} fn foo() { format!("hel<|>lo {}", 0); } "#, ); } #[test] fn test_hover_non_ascii_space_doc() { check( " ///　<- `\u{3000}` here fn foo() { } fn bar() { fo<|>o(); } ", expect![[r#" *foo* ```rust test ``` ```rust fn foo() ``` --- \<- `　` here "#]], ); } #[test] fn test_hover_function_show_qualifiers() { check( r#"async fn foo<|>() {}"#, expect![[r#" *foo* ```rust test ``` ```rust async fn foo() ``` "#]], ); check( r#"pub const unsafe fn foo<|>() {}"#, expect![[r#" *foo* ```rust test ``` ```rust pub const unsafe fn foo() ``` "#]], ); check( r#"pub(crate) async unsafe extern "C" fn foo<|>() {}"#, expect![[r#" *foo* ```rust test ``` ```rust pub(crate) async unsafe extern "C" fn foo() ``` "#]], ); } #[test] fn test_hover_trait_show_qualifiers() { check_actions( r"unsafe trait foo<|>() {}", expect![[r#" [ Implementaion( FilePosition { file_id: FileId( 0, ), offset: 13, }, ), ] "#]], ); } #[test] fn test_hover_extern_crate() { check( r#" //- /main.rs crate:main deps:std extern crate st<|>d; //- /std/lib.rs crate:std //! Standard library for this test //! //! Printed? //! abc123 "#, expect![[r#" *std* Standard library for this test Printed? abc123 "#]], ); check( r#" //- /main.rs crate:main deps:std extern crate std as ab<|>c; //- /std/lib.rs crate:std //! Standard library for this test //! //! Printed? //! abc123 "#, expect![[r#" *abc* Standard library for this test Printed? abc123 "#]], ); } #[test] fn test_hover_mod_with_same_name_as_function() { check( r#" use self::m<|>y::Bar; mod my { pub struct Bar; } fn my() {} "#, expect![[r#" *my* ```rust test ``` ```rust mod my ``` "#]], ); } #[test] fn test_hover_struct_doc_comment() { check( r#" /// bar docs struct Bar; fn foo() { let bar = Ba<|>r; } "#, expect![[r#" *Bar* ```rust test ``` ```rust struct Bar ``` --- bar docs "#]], ); } #[test] fn test_hover_struct_doc_attr() { check( r#" #[doc = "bar docs"] struct Bar; fn foo() { let bar = Ba<|>r; } "#, expect![[r#" *Bar* ```rust test ``` ```rust struct Bar ``` --- bar docs "#]], ); } #[test] fn test_hover_struct_doc_attr_multiple_and_mixed() { check( r#" /// bar docs 0 #[doc = "bar docs 1"] #[doc = "bar docs 2"] struct Bar; fn foo() { let bar = Ba<|>r; } "#, expect![[r#" *Bar* ```rust test ``` ```rust struct Bar ``` --- bar docs 0 bar docs 1 bar docs 2 "#]], ); } #[test] fn test_hover_path_link() { check( r#" pub struct Foo; /// [Foo](struct.Foo.html) pub struct B<|>ar "#, expect![[r#" *Bar* ```rust test ``` ```rust pub struct Bar ``` --- [Foo](https://docs.rs/test/*/test/struct.Foo.html) "#]], ); } #[test] fn test_hover_path_link_no_strip() { check( r#" pub struct Foo; /// [struct Foo](struct.Foo.html) pub struct B<|>ar "#, expect![[r#" *Bar* ```rust test ``` ```rust pub struct Bar ``` --- [struct Foo](https://docs.rs/test/*/test/struct.Foo.html) "#]], ); } #[ignore = "path based links currently only support documentation on ModuleDef items"] #[test] fn test_hover_path_link_field() { check( r#" pub struct Foo; pub struct Bar { /// [Foo](struct.Foo.html) fie<|>ld: () } "#, expect![[r#" *field* ```rust test::Bar ``` ```rust field: () ``` --- [Foo](https://docs.rs/test/*/test/struct.Foo.html) "#]], ); } #[test] fn test_hover_intra_link() { check( r#" pub mod foo { pub struct Foo; } /// [Foo](foo::Foo) pub struct B<|>ar "#, expect![[r#" *Bar* ```rust test ``` ```rust pub struct Bar ``` --- [Foo](https://docs.rs/test/*/test/foo/struct.Foo.html) "#]], ); } #[test] fn test_hover_intra_link_html_root_url() { check( r#" #![doc(arbitrary_attribute = "test", html_root_url = "https:/example.com", arbitrary_attribute2)] pub mod foo { pub struct Foo; } /// [Foo](foo::Foo) pub struct B<|>ar "#, expect![[r#" *Bar* ```rust test ``` ```rust pub struct Bar ``` --- [Foo](https://example.com/test/foo/struct.Foo.html) "#]], ); } #[test] fn test_hover_intra_link_shortlink() { check( r#" pub struct Foo; /// [Foo] pub struct B<|>ar "#, expect![[r#" *Bar* ```rust test ``` ```rust pub struct Bar ``` --- [Foo](https://docs.rs/test/*/test/struct.Foo.html) "#]], ); } #[test] fn test_hover_intra_link_shortlink_code() { check( r#" pub struct Foo; /// [`Foo`] pub struct B<|>ar "#, expect![[r#" *Bar* ```rust test ``` ```rust pub struct Bar ``` --- [`Foo`](https://docs.rs/test/*/test/struct.Foo.html) "#]], ); } #[test] fn test_hover_intra_link_namespaced() { check( r#" pub struct Foo; fn Foo() {} /// [Foo()] pub struct B<|>ar "#, expect![[r#" *Bar* ```rust test ``` ```rust pub struct Bar ``` --- [Foo](https://docs.rs/test/*/test/struct.Foo.html) "#]], ); } #[test] fn test_hover_intra_link_shortlink_namspaced_code() { check( r#" pub struct Foo; /// [`struct Foo`] pub struct B<|>ar "#, expect![[r#" *Bar* ```rust test ``` ```rust pub struct Bar ``` --- [`Foo`](https://docs.rs/test/*/test/struct.Foo.html) "#]], ); } #[test] fn test_hover_intra_link_shortlink_namspaced_code_with_at() { check( r#" pub struct Foo; /// [`struct@Foo`] pub struct B<|>ar "#, expect![[r#" *Bar* ```rust test ``` ```rust pub struct Bar ``` --- [`Foo`](https://docs.rs/test/*/test/struct.Foo.html) "#]], ); } #[test] fn test_hover_intra_link_reference() { check( r#" pub struct Foo; /// [my Foo][foo] /// /// [foo]: Foo pub struct B<|>ar "#, expect![[r#" *Bar* ```rust test ``` ```rust pub struct Bar ``` --- [my Foo](https://docs.rs/test/*/test/struct.Foo.html) "#]], ); } #[test] fn test_hover_external_url() { check( r#" pub struct Foo; /// [external](https://www.google.com) pub struct B<|>ar "#, expect![[r#" *Bar* ```rust test ``` ```rust pub struct Bar ``` --- [external](https://www.google.com) "#]], ); } // Check that we don't rewrite links which we can't identify #[test] fn test_hover_unknown_target() { check( r#" pub struct Foo; /// [baz](Baz) pub struct B<|>ar "#, expect![[r#" *Bar* ```rust test ``` ```rust pub struct Bar ``` --- [baz](Baz) "#]], ); } #[test] fn test_doc_links_enum_variant() { check( r#" enum E { /// [E] V<|> { field: i32 } } "#, expect![[r#" *V* ```rust test::E ``` ```rust V ``` --- [E](https://docs.rs/test/*/test/enum.E.html) "#]], ); } #[test] fn test_doc_links_field() { check( r#" struct S { /// [`S`] field<|>: i32 } "#, expect![[r#" *field* ```rust test::S ``` ```rust field: i32 ``` --- [`S`](https://docs.rs/test/*/test/struct.S.html) "#]], ); } #[test] fn test_hover_no_links() { check_hover_no_links( r#" /// Test cases: /// case 1. bare URL: https://www.example.com/ /// case 2. inline URL with title: [example](https://www.example.com/) /// case 3. code refrence: [`Result`] /// case 4. code refrence but miss footnote: [`String`] /// case 5. autolink: /// case 6. email address: /// case 7. refrence: [example][example] /// case 8. collapsed link: [example][] /// case 9. shortcut link: [example] /// case 10. inline without URL: [example]() /// case 11. refrence: [foo][foo] /// case 12. refrence: [foo][bar] /// case 13. collapsed link: [foo][] /// case 14. shortcut link: [foo] /// case 15. inline without URL: [foo]() /// case 16. just escaped text: \[foo] /// case 17. inline link: [Foo](foo::Foo) /// /// [`Result`]: ../../std/result/enum.Result.html /// [^example]: https://www.example.com/ pub fn fo<|>o() {} "#, expect![[r#" *foo* ```rust test ``` ```rust pub fn foo() ``` --- Test cases: case 1. bare URL: https://www.example.com/ case 2. inline URL with title: [example](https://www.example.com/) case 3. code refrence: `Result` case 4. code refrence but miss footnote: `String` case 5. autolink: http://www.example.com/ case 6. email address: test@example.com case 7. refrence: example case 8. collapsed link: example case 9. shortcut link: example case 10. inline without URL: example case 11. refrence: foo case 12. refrence: foo case 13. collapsed link: foo case 14. shortcut link: foo case 15. inline without URL: foo case 16. just escaped text: \[foo] case 17. inline link: Foo [^example]: https://www.example.com/ "#]], ); } #[test] fn test_hover_macro_generated_struct_fn_doc_comment() { mark::check!(hover_macro_generated_struct_fn_doc_comment); check( r#" macro_rules! bar { () => { struct Bar; impl Bar { /// Do the foo fn foo(&self) {} } } } bar!(); fn foo() { let bar = Bar; bar.fo<|>o(); } "#, expect![[r#" *foo* ```rust test::Bar ``` ```rust fn foo(&self) ``` --- Do the foo "#]], ); } #[test] fn test_hover_macro_generated_struct_fn_doc_attr() { mark::check!(hover_macro_generated_struct_fn_doc_attr); check( r#" macro_rules! bar { () => { struct Bar; impl Bar { #[doc = "Do the foo"] fn foo(&self) {} } } } bar!(); fn foo() { let bar = Bar; bar.fo<|>o(); } "#, expect![[r#" *foo* ```rust test::Bar ``` ```rust fn foo(&self) ``` --- Do the foo "#]], ); } #[test] fn test_hover_trait_has_impl_action() { check_actions( r#"trait foo<|>() {}"#, expect![[r#" [ Implementaion( FilePosition { file_id: FileId( 0, ), offset: 6, }, ), ] "#]], ); } #[test] fn test_hover_struct_has_impl_action() { check_actions( r"struct foo<|>() {}", expect![[r#" [ Implementaion( FilePosition { file_id: FileId( 0, ), offset: 7, }, ), ] "#]], ); } #[test] fn test_hover_union_has_impl_action() { check_actions( r#"union foo<|>() {}"#, expect![[r#" [ Implementaion( FilePosition { file_id: FileId( 0, ), offset: 6, }, ), ] "#]], ); } #[test] fn test_hover_enum_has_impl_action() { check_actions( r"enum foo<|>() { A, B }", expect![[r#" [ Implementaion( FilePosition { file_id: FileId( 0, ), offset: 5, }, ), ] "#]], ); } #[test] fn test_hover_test_has_action() { check_actions( r#" #[test] fn foo_<|>test() {} "#, expect![[r#" [ Runnable( Runnable { nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..24, focus_range: 11..19, name: "foo_test", kind: Function, }, kind: Test { test_id: Path( "foo_test", ), attr: TestAttr { ignore: false, }, }, cfg: None, }, ), ] "#]], ); } #[test] fn test_hover_test_mod_has_action() { check_actions( r#" mod tests<|> { #[test] fn foo_test() {} } "#, expect![[r#" [ Runnable( Runnable { nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..46, focus_range: 4..9, name: "tests", kind: Module, }, kind: TestMod { path: "tests", }, cfg: None, }, ), ] "#]], ); } #[test] fn test_hover_struct_has_goto_type_action() { check_actions( r#" struct S{ f1: u32 } fn main() { let s<|>t = S{ f1:0 }; } "#, expect![[r#" [ GoToType( [ HoverGotoTypeData { mod_path: "test::S", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..19, focus_range: 7..8, name: "S", kind: Struct, description: "struct S", }, }, ], ), ] "#]], ); } #[test] fn test_hover_generic_struct_has_goto_type_actions() { check_actions( r#" struct Arg(u32); struct S{ f1: T } fn main() { let s<|>t = S{ f1:Arg(0) }; } "#, expect![[r#" [ GoToType( [ HoverGotoTypeData { mod_path: "test::S", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 17..37, focus_range: 24..25, name: "S", kind: Struct, description: "struct S", }, }, HoverGotoTypeData { mod_path: "test::Arg", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..16, focus_range: 7..10, name: "Arg", kind: Struct, description: "struct Arg", }, }, ], ), ] "#]], ); } #[test] fn test_hover_generic_struct_has_flattened_goto_type_actions() { check_actions( r#" struct Arg(u32); struct S{ f1: T } fn main() { let s<|>t = S{ f1: S{ f1: Arg(0) } }; } "#, expect![[r#" [ GoToType( [ HoverGotoTypeData { mod_path: "test::S", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 17..37, focus_range: 24..25, name: "S", kind: Struct, description: "struct S", }, }, HoverGotoTypeData { mod_path: "test::Arg", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..16, focus_range: 7..10, name: "Arg", kind: Struct, description: "struct Arg", }, }, ], ), ] "#]], ); } #[test] fn test_hover_tuple_has_goto_type_actions() { check_actions( r#" struct A(u32); struct B(u32); mod M { pub struct C(u32); } fn main() { let s<|>t = (A(1), B(2), M::C(3) ); } "#, expect![[r#" [ GoToType( [ HoverGotoTypeData { mod_path: "test::A", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..14, focus_range: 7..8, name: "A", kind: Struct, description: "struct A", }, }, HoverGotoTypeData { mod_path: "test::B", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 15..29, focus_range: 22..23, name: "B", kind: Struct, description: "struct B", }, }, HoverGotoTypeData { mod_path: "test::M::C", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 42..60, focus_range: 53..54, name: "C", kind: Struct, description: "pub struct C", }, }, ], ), ] "#]], ); } #[test] fn test_hover_return_impl_trait_has_goto_type_action() { check_actions( r#" trait Foo {} fn foo() -> impl Foo {} fn main() { let s<|>t = foo(); } "#, expect![[r#" [ GoToType( [ HoverGotoTypeData { mod_path: "test::Foo", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..12, focus_range: 6..9, name: "Foo", kind: Trait, description: "trait Foo", }, }, ], ), ] "#]], ); } #[test] fn test_hover_generic_return_impl_trait_has_goto_type_action() { check_actions( r#" trait Foo {} struct S; fn foo() -> impl Foo {} fn main() { let s<|>t = foo(); } "#, expect![[r#" [ GoToType( [ HoverGotoTypeData { mod_path: "test::Foo", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..15, focus_range: 6..9, name: "Foo", kind: Trait, description: "trait Foo", }, }, HoverGotoTypeData { mod_path: "test::S", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 16..25, focus_range: 23..24, name: "S", kind: Struct, description: "struct S", }, }, ], ), ] "#]], ); } #[test] fn test_hover_return_impl_traits_has_goto_type_action() { check_actions( r#" trait Foo {} trait Bar {} fn foo() -> impl Foo + Bar {} fn main() { let s<|>t = foo(); } "#, expect![[r#" [ GoToType( [ HoverGotoTypeData { mod_path: "test::Foo", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..12, focus_range: 6..9, name: "Foo", kind: Trait, description: "trait Foo", }, }, HoverGotoTypeData { mod_path: "test::Bar", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 13..25, focus_range: 19..22, name: "Bar", kind: Trait, description: "trait Bar", }, }, ], ), ] "#]], ); } #[test] fn test_hover_generic_return_impl_traits_has_goto_type_action() { check_actions( r#" trait Foo {} trait Bar {} struct S1 {} struct S2 {} fn foo() -> impl Foo + Bar {} fn main() { let s<|>t = foo(); } "#, expect![[r#" [ GoToType( [ HoverGotoTypeData { mod_path: "test::Foo", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..15, focus_range: 6..9, name: "Foo", kind: Trait, description: "trait Foo", }, }, HoverGotoTypeData { mod_path: "test::Bar", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 16..31, focus_range: 22..25, name: "Bar", kind: Trait, description: "trait Bar", }, }, HoverGotoTypeData { mod_path: "test::S1", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 32..44, focus_range: 39..41, name: "S1", kind: Struct, description: "struct S1", }, }, HoverGotoTypeData { mod_path: "test::S2", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 45..57, focus_range: 52..54, name: "S2", kind: Struct, description: "struct S2", }, }, ], ), ] "#]], ); } #[test] fn test_hover_arg_impl_trait_has_goto_type_action() { check_actions( r#" trait Foo {} fn foo(ar<|>g: &impl Foo) {} "#, expect![[r#" [ GoToType( [ HoverGotoTypeData { mod_path: "test::Foo", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..12, focus_range: 6..9, name: "Foo", kind: Trait, description: "trait Foo", }, }, ], ), ] "#]], ); } #[test] fn test_hover_arg_impl_traits_has_goto_type_action() { check_actions( r#" trait Foo {} trait Bar {} struct S{} fn foo(ar<|>g: &impl Foo + Bar) {} "#, expect![[r#" [ GoToType( [ HoverGotoTypeData { mod_path: "test::Foo", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..12, focus_range: 6..9, name: "Foo", kind: Trait, description: "trait Foo", }, }, HoverGotoTypeData { mod_path: "test::Bar", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 13..28, focus_range: 19..22, name: "Bar", kind: Trait, description: "trait Bar", }, }, HoverGotoTypeData { mod_path: "test::S", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 29..39, focus_range: 36..37, name: "S", kind: Struct, description: "struct S", }, }, ], ), ] "#]], ); } #[test] fn test_hover_async_block_impl_trait_has_goto_type_action() { check_actions( r#" struct S; fn foo() { let fo<|>o = async { S }; } #[prelude_import] use future::*; mod future { #[lang = "future_trait"] pub trait Future { type Output; } } "#, expect![[r#" [ GoToType( [ HoverGotoTypeData { mod_path: "test::future::Future", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 101..163, focus_range: 140..146, name: "Future", kind: Trait, description: "pub trait Future", }, }, HoverGotoTypeData { mod_path: "test::S", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..9, focus_range: 7..8, name: "S", kind: Struct, description: "struct S", }, }, ], ), ] "#]], ); } #[test] fn test_hover_arg_generic_impl_trait_has_goto_type_action() { check_actions( r#" trait Foo {} struct S {} fn foo(ar<|>g: &impl Foo) {} "#, expect![[r#" [ GoToType( [ HoverGotoTypeData { mod_path: "test::Foo", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..15, focus_range: 6..9, name: "Foo", kind: Trait, description: "trait Foo", }, }, HoverGotoTypeData { mod_path: "test::S", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 16..27, focus_range: 23..24, name: "S", kind: Struct, description: "struct S", }, }, ], ), ] "#]], ); } #[test] fn test_hover_dyn_return_has_goto_type_action() { check_actions( r#" trait Foo {} struct S; impl Foo for S {} struct B{} fn foo() -> B {} fn main() { let s<|>t = foo(); } "#, expect![[r#" [ GoToType( [ HoverGotoTypeData { mod_path: "test::B", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 42..55, focus_range: 49..50, name: "B", kind: Struct, description: "struct B", }, }, HoverGotoTypeData { mod_path: "test::Foo", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..12, focus_range: 6..9, name: "Foo", kind: Trait, description: "trait Foo", }, }, ], ), ] "#]], ); } #[test] fn test_hover_dyn_arg_has_goto_type_action() { check_actions( r#" trait Foo {} fn foo(ar<|>g: &dyn Foo) {} "#, expect![[r#" [ GoToType( [ HoverGotoTypeData { mod_path: "test::Foo", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..12, focus_range: 6..9, name: "Foo", kind: Trait, description: "trait Foo", }, }, ], ), ] "#]], ); } #[test] fn test_hover_generic_dyn_arg_has_goto_type_action() { check_actions( r#" trait Foo {} struct S {} fn foo(ar<|>g: &dyn Foo) {} "#, expect![[r#" [ GoToType( [ HoverGotoTypeData { mod_path: "test::Foo", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..15, focus_range: 6..9, name: "Foo", kind: Trait, description: "trait Foo", }, }, HoverGotoTypeData { mod_path: "test::S", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 16..27, focus_range: 23..24, name: "S", kind: Struct, description: "struct S", }, }, ], ), ] "#]], ); } #[test] fn test_hover_goto_type_action_links_order() { check_actions( r#" trait ImplTrait {} trait DynTrait {} struct B {} struct S {} fn foo(a<|>rg: &impl ImplTrait>>>) {} "#, expect![[r#" [ GoToType( [ HoverGotoTypeData { mod_path: "test::ImplTrait", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..21, focus_range: 6..15, name: "ImplTrait", kind: Trait, description: "trait ImplTrait", }, }, HoverGotoTypeData { mod_path: "test::B", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 43..57, focus_range: 50..51, name: "B", kind: Struct, description: "struct B", }, }, HoverGotoTypeData { mod_path: "test::DynTrait", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 22..42, focus_range: 28..36, name: "DynTrait", kind: Trait, description: "trait DynTrait", }, }, HoverGotoTypeData { mod_path: "test::S", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 58..69, focus_range: 65..66, name: "S", kind: Struct, description: "struct S", }, }, ], ), ] "#]], ); } #[test] fn test_hover_associated_type_has_goto_type_action() { check_actions( r#" trait Foo { type Item; fn get(self) -> Self::Item {} } struct Bar{} struct S{} impl Foo for S { type Item = Bar; } fn test() -> impl Foo { S {} } fn main() { let s<|>t = test().get(); } "#, expect![[r#" [ GoToType( [ HoverGotoTypeData { mod_path: "test::Foo", nav: NavigationTarget { file_id: FileId( 0, ), full_range: 0..62, focus_range: 6..9, name: "Foo", kind: Trait, description: "trait Foo", }, }, ], ), ] "#]], ); } #[test] fn hover_displays_normalized_crate_names() { check( r#" //- /lib.rs crate:name-with-dashes pub mod wrapper { pub struct Thing { x: u32 } impl Thing { pub fn new() -> Thing { Thing { x: 0 } } } } //- /main.rs crate:main deps:name-with-dashes fn main() { let foo_test = name_with_dashes::wrapper::Thing::new<|>(); } "#, expect![[r#" *new* ```rust name_with_dashes::wrapper::Thing ``` ```rust pub fn new() -> Thing ``` "#]], ) } #[test] fn hover_field_pat_shorthand_ref_match_ergonomics() { check( r#" struct S { f: i32, } fn main() { let s = S { f: 0 }; let S { f<|> } = &s; } "#, expect![[r#" *f* ```rust &i32 ``` "#]], ); } #[test] fn hover_self_param_shows_type() { check( r#" struct Foo {} impl Foo { fn bar(&sel<|>f) {} } "#, expect![[r#" *&self* ```rust &Foo ``` "#]], ); } #[test] fn hover_self_param_shows_type_for_arbitrary_self_type() { check( r#" struct Arc(T); struct Foo {} impl Foo { fn bar(sel<|>f: Arc) {} } "#, expect![[r#" *self: Arc* ```rust Arc ``` "#]], ); } #[test] fn hover_doc_outer_inner() { check( r#" /// Be quick; mod Foo<|> { //! time is mana /// This comment belongs to the function fn foo() {} } "#, expect![[r#" *Foo* ```rust test ``` ```rust mod Foo ``` --- Be quick; time is mana "#]], ); } #[test] fn hover_doc_outer_inner_attribue() { check( r#" #[doc = "Be quick;"] mod Foo<|> { #![doc = "time is mana"] #[doc = "This comment belongs to the function"] fn foo() {} } "#, expect![[r#" *Foo* ```rust test ``` ```rust mod Foo ``` --- Be quick; time is mana "#]], ); } #[test] fn hover_comments_dont_highlight_parent() { check_hover_no_result( r#" fn no_hover() { // no<|>hover } "#, ); } #[test] fn hover_label() { check( r#" fn foo() { 'label<|>: loop {} } "#, expect![[r#" *'label* ```rust 'label ``` "#]], ); } #[test] fn hover_lifetime() { check( r#"fn foo<'lifetime>(_: &'lifetime<|> ()) {}"#, expect![[r#" *'lifetime* ```rust 'lifetime ``` "#]], ); } #[test] fn hover_type_param() { check( r#" struct Foo(T); trait Copy {} trait Clone {} trait Sized {} impl Foo> where T: Sized {} "#, expect![[r#" *T* ```rust T: Copy + Clone + Sized ``` "#]], ); check( r#" struct Foo(T); impl Foo> {} "#, expect![[r#" *T* ```rust T ``` "#]], ); // lifetimes aren't being substituted yet check( r#" struct Foo(T); impl Foo> {} "#, expect![[r#" *T* ```rust T: {error} ``` "#]], ); } }