use std::{iter, mem::discriminant};
use crate::{
doc_links::token_as_doc_comment,
navigation_target::{self, ToNav},
FilePosition, NavigationTarget, RangeInfo, TryToNav, UpmappingResult,
};
use hir::{AsAssocItem, AssocItem, FileRange, InFile, MacroFileIdExt, ModuleDef, Semantics};
use ide_db::{
base_db::{AnchoredPath, FileLoader, SourceDatabase},
defs::{Definition, IdentClass},
helpers::pick_best_token,
RootDatabase, SymbolKind,
};
use itertools::Itertools;
use span::{Edition, FileId};
use syntax::{
ast::{self, HasLoopBody},
match_ast, AstNode, AstToken,
SyntaxKind::*,
SyntaxNode, SyntaxToken, TextRange, T,
};
pub(crate) fn goto_definition(
db: &RootDatabase,
FilePosition { file_id, offset }: FilePosition,
) -> Option<RangeInfo<Vec<NavigationTarget>>> {
let sema = &Semantics::new(db);
let file = sema.parse_guess_edition(file_id).syntax().clone();
let edition =
sema.attach_first_edition(file_id).map(|it| it.edition()).unwrap_or(Edition::CURRENT);
let original_token = pick_best_token(file.token_at_offset(offset), |kind| match kind {
IDENT
| INT_NUMBER
| LIFETIME_IDENT
| T![self]
| T![super]
| T![crate]
| T![Self]
| COMMENT => 4,
T!['['] | T![']'] | T![?] | T![*] | T![-] | T![!] => 3,
kind if kind.is_keyword(edition) => 2,
T!['('] | T![')'] => 2,
kind if kind.is_trivia() => 0,
_ => 1,
})?;
if let Some(doc_comment) = token_as_doc_comment(&original_token) {
return doc_comment.get_definition_with_descend_at(sema, offset, |def, _, link_range| {
let nav = def.try_to_nav(db)?;
Some(RangeInfo::new(link_range, nav.collect()))
});
}
if let Some((range, resolution)) =
sema.check_for_format_args_template(original_token.clone(), offset)
{
return Some(RangeInfo::new(
range,
match resolution {
Some(res) => def_to_nav(db, Definition::from(res)),
None => vec![],
},
));
}
if let Some(navs) = handle_control_flow_keywords(sema, &original_token) {
return Some(RangeInfo::new(original_token.text_range(), navs));
}
let navs = sema
.descend_into_macros_no_opaque(original_token.clone())
.into_iter()
.filter_map(|token| {
let parent = token.parent()?;
if let Some(token) = ast::String::cast(token.clone()) {
if let Some(x) = try_lookup_include_path(sema, token, file_id) {
return Some(vec![x]);
}
}
if ast::TokenTree::can_cast(parent.kind()) {
if let Some(x) = try_lookup_macro_def_in_macro_use(sema, token) {
return Some(vec![x]);
}
}
Some(
IdentClass::classify_node(sema, &parent)?
.definitions()
.into_iter()
.flat_map(|def| {
if let Definition::ExternCrateDecl(crate_def) = def {
return crate_def
.resolved_crate(db)
.map(|it| it.root_module().to_nav(sema.db))
.into_iter()
.flatten()
.collect();
}
try_filter_trait_item_definition(sema, &def)
.unwrap_or_else(|| def_to_nav(sema.db, def))
})
.collect(),
)
})
.flatten()
.unique()
.collect::<Vec<NavigationTarget>>();
Some(RangeInfo::new(original_token.text_range(), navs))
}
fn try_lookup_include_path(
sema: &Semantics<'_, RootDatabase>,
token: ast::String,
file_id: FileId,
) -> Option<NavigationTarget> {
let file = sema.hir_file_for(&token.syntax().parent()?).macro_file()?;
if !iter::successors(Some(file), |file| file.parent(sema.db).macro_file())
.any(|file| file.is_include_like_macro(sema.db) && file.eager_arg(sema.db).is_none())
{
return None;
}
let path = token.value().ok()?;
let file_id = sema.db.resolve_path(AnchoredPath { anchor: file_id, path: &path })?;
let size = sema.db.file_text(file_id).len().try_into().ok()?;
Some(NavigationTarget {
file_id,
full_range: TextRange::new(0.into(), size),
name: path.into(),
alias: None,
focus_range: None,
kind: None,
container_name: None,
description: None,
docs: None,
})
}
fn try_lookup_macro_def_in_macro_use(
sema: &Semantics<'_, RootDatabase>,
token: SyntaxToken,
) -> Option<NavigationTarget> {
let extern_crate = token.parent()?.ancestors().find_map(ast::ExternCrate::cast)?;
let extern_crate = sema.to_def(&extern_crate)?;
let krate = extern_crate.resolved_crate(sema.db)?;
for mod_def in krate.root_module().declarations(sema.db) {
if let ModuleDef::Macro(mac) = mod_def {
if mac.name(sema.db).as_str() == token.text() {
if let Some(nav) = mac.try_to_nav(sema.db) {
return Some(nav.call_site);
}
}
}
}
None
}
fn try_filter_trait_item_definition(
sema: &Semantics<'_, RootDatabase>,
def: &Definition,
) -> Option<Vec<NavigationTarget>> {
let db = sema.db;
let assoc = def.as_assoc_item(db)?;
match assoc {
AssocItem::Function(..) => None,
AssocItem::Const(..) | AssocItem::TypeAlias(..) => {
let trait_ = assoc.implemented_trait(db)?;
let name = def.name(db)?;
let discriminant_value = discriminant(&assoc);
trait_
.items(db)
.iter()
.filter(|itm| discriminant(*itm) == discriminant_value)
.find_map(|itm| (itm.name(db)? == name).then(|| itm.try_to_nav(db)).flatten())
.map(|it| it.collect())
}
}
}
fn handle_control_flow_keywords(
sema: &Semantics<'_, RootDatabase>,
token: &SyntaxToken,
) -> Option<Vec<NavigationTarget>> {
match token.kind() {
T![fn] | T![async] | T![try] | T![return] => nav_for_exit_points(sema, token),
T![loop] | T![while] | T![break] | T![continue] => nav_for_break_points(sema, token),
T![for] if token.parent().and_then(ast::ForExpr::cast).is_some() => {
nav_for_break_points(sema, token)
}
_ => None,
}
}
pub(crate) fn find_fn_or_blocks(
sema: &Semantics<'_, RootDatabase>,
token: &SyntaxToken,
) -> Vec<SyntaxNode> {
let find_ancestors = |token: SyntaxToken| {
let token_kind = token.kind();
for anc in sema.token_ancestors_with_macros(token) {
let node = match_ast! {
match anc {
ast::Fn(fn_) => fn_.syntax().clone(),
ast::ClosureExpr(c) => c.syntax().clone(),
ast::BlockExpr(blk) => {
match blk.modifier() {
Some(ast::BlockModifier::Async(_)) => blk.syntax().clone(),
Some(ast::BlockModifier::Try(_)) if token_kind != T![return] => blk.syntax().clone(),
_ => continue,
}
},
_ => continue,
}
};
return Some(node);
}
None
};
sema.descend_into_macros(token.clone()).into_iter().filter_map(find_ancestors).collect_vec()
}
fn nav_for_exit_points(
sema: &Semantics<'_, RootDatabase>,
token: &SyntaxToken,
) -> Option<Vec<NavigationTarget>> {
let db = sema.db;
let token_kind = token.kind();
let navs = find_fn_or_blocks(sema, token)
.into_iter()
.filter_map(|node| {
let file_id = sema.hir_file_for(&node);
match_ast! {
match node {
ast::Fn(fn_) => {
let mut nav = sema.to_def(&fn_)?.try_to_nav(db)?;
let focus_token = if matches!(token_kind, T![async]) {
fn_.async_token()?
} else {
fn_.fn_token()?
};
let focus_frange = InFile::new(file_id, focus_token.text_range())
.original_node_file_range_opt(db)
.map(|(frange, _)| frange);
if let Some(FileRange { file_id, range }) = focus_frange {
let contains_frange = |nav: &NavigationTarget| {
nav.file_id == file_id && nav.full_range.contains_range(range)
};
if let Some(def_site) = nav.def_site.as_mut() {
if contains_frange(def_site) {
def_site.focus_range = Some(range);
}
} else if contains_frange(&nav.call_site) {
nav.call_site.focus_range = Some(range);
}
}
Some(nav)
},
ast::ClosureExpr(c) => {
let pipe_tok = c.param_list().and_then(|it| it.pipe_token())?.text_range();
let closure_in_file = InFile::new(file_id, c.into());
Some(expr_to_nav(db, closure_in_file, Some(pipe_tok)))
},
ast::BlockExpr(blk) => {
match blk.modifier() {
Some(ast::BlockModifier::Async(_)) => {
let async_tok = blk.async_token()?.text_range();
let blk_in_file = InFile::new(file_id, blk.into());
Some(expr_to_nav(db, blk_in_file, Some(async_tok)))
},
Some(ast::BlockModifier::Try(_)) if token_kind != T![return] => {
let try_tok = blk.try_token()?.text_range();
let blk_in_file = InFile::new(file_id, blk.into());
Some(expr_to_nav(db, blk_in_file, Some(try_tok)))
},
_ => None,
}
},
_ => None,
}
}
})
.flatten()
.collect_vec();
Some(navs)
}
pub(crate) fn find_loops(
sema: &Semantics<'_, RootDatabase>,
token: &SyntaxToken,
) -> Option<Vec<ast::Expr>> {
let parent = token.parent()?;
let lbl = match_ast! {
match parent {
ast::BreakExpr(break_) => break_.lifetime(),
ast::ContinueExpr(continue_) => continue_.lifetime(),
_ => None,
}
};
let label_matches =
|it: Option<ast::Label>| match (lbl.as_ref(), it.and_then(|it| it.lifetime())) {
(Some(lbl), Some(it)) => lbl.text() == it.text(),
(None, _) => true,
(Some(_), None) => false,
};
let find_ancestors = |token: SyntaxToken| {
for anc in sema.token_ancestors_with_macros(token).filter_map(ast::Expr::cast) {
let node = match &anc {
ast::Expr::LoopExpr(loop_) if label_matches(loop_.label()) => anc,
ast::Expr::WhileExpr(while_) if label_matches(while_.label()) => anc,
ast::Expr::ForExpr(for_) if label_matches(for_.label()) => anc,
ast::Expr::BlockExpr(blk)
if blk.label().is_some() && label_matches(blk.label()) =>
{
anc
}
_ => continue,
};
return Some(node);
}
None
};
sema.descend_into_macros(token.clone())
.into_iter()
.filter_map(find_ancestors)
.collect_vec()
.into()
}
fn nav_for_break_points(
sema: &Semantics<'_, RootDatabase>,
token: &SyntaxToken,
) -> Option<Vec<NavigationTarget>> {
let db = sema.db;
let navs = find_loops(sema, token)?
.into_iter()
.filter_map(|expr| {
let file_id = sema.hir_file_for(expr.syntax());
let expr_in_file = InFile::new(file_id, expr.clone());
let focus_range = match expr {
ast::Expr::LoopExpr(loop_) => loop_.loop_token()?.text_range(),
ast::Expr::WhileExpr(while_) => while_.while_token()?.text_range(),
ast::Expr::ForExpr(for_) => for_.for_token()?.text_range(),
ast::Expr::BlockExpr(blk) => blk.label().unwrap().syntax().text_range(),
_ => return None,
};
let nav = expr_to_nav(db, expr_in_file, Some(focus_range));
Some(nav)
})
.flatten()
.collect_vec();
Some(navs)
}
fn def_to_nav(db: &RootDatabase, def: Definition) -> Vec<NavigationTarget> {
def.try_to_nav(db).map(|it| it.collect()).unwrap_or_default()
}
fn expr_to_nav(
db: &RootDatabase,
InFile { file_id, value }: InFile<ast::Expr>,
focus_range: Option<TextRange>,
) -> UpmappingResult<NavigationTarget> {
let kind = SymbolKind::Label;
let value_range = value.syntax().text_range();
let navs = navigation_target::orig_range_with_focus_r(db, file_id, value_range, focus_range);
navs.map(|(hir::FileRangeWrapper { file_id, range }, focus_range)| {
NavigationTarget::from_syntax(file_id, "<expr>".into(), focus_range, range, kind)
})
}
#[cfg(test)]
mod tests {
use crate::fixture;
use ide_db::FileRange;
use itertools::Itertools;
use syntax::SmolStr;
#[track_caller]
fn check(ra_fixture: &str) {
let (analysis, position, expected) = fixture::annotations(ra_fixture);
let navs = analysis.goto_definition(position).unwrap().expect("no definition found").info;
let cmp = |&FileRange { file_id, range }: &_| (file_id, range.start());
let navs = navs
.into_iter()
.map(|nav| FileRange { file_id: nav.file_id, range: nav.focus_or_full_range() })
.sorted_by_key(cmp)
.collect::<Vec<_>>();
let expected = expected
.into_iter()
.map(|(FileRange { file_id, range }, _)| FileRange { file_id, range })
.sorted_by_key(cmp)
.collect::<Vec<_>>();
assert_eq!(expected, navs);
}
fn check_unresolved(ra_fixture: &str) {
let (analysis, position) = fixture::position(ra_fixture);
let navs = analysis.goto_definition(position).unwrap().expect("no definition found").info;
assert!(navs.is_empty(), "didn't expect this to resolve anywhere: {navs:?}")
}
fn check_name(expected_name: &str, ra_fixture: &str) {
let (analysis, position, _) = fixture::annotations(ra_fixture);
let navs = analysis.goto_definition(position).unwrap().expect("no definition found").info;
assert!(navs.len() < 2, "expected single navigation target but encountered {}", navs.len());
let Some(target) = navs.into_iter().next() else {
panic!("expected single navigation target but encountered none");
};
assert_eq!(target.name, SmolStr::new_inline(expected_name));
}
#[test]
fn goto_def_pat_range_to_inclusive() {
check_name(
"RangeToInclusive",
r#"
//- minicore: range
fn f(ch: char) -> bool {
match ch {
..$0='z' => true,
_ => false
}
}
"#,
);
}
#[test]
fn goto_def_pat_range_to() {
check_name(
"RangeTo",
r#"
//- minicore: range
fn f(ch: char) -> bool {
match ch {
.$0.'z' => true,
_ => false
}
}
"#,
);
}
#[test]
fn goto_def_pat_range() {
check_name(
"Range",
r#"
//- minicore: range
fn f(ch: char) -> bool {
match ch {
'a'.$0.'z' => true,
_ => false
}
}
"#,
);
}
#[test]
fn goto_def_pat_range_inclusive() {
check_name(
"RangeInclusive",
r#"
//- minicore: range
fn f(ch: char) -> bool {
match ch {
'a'..$0='z' => true,
_ => false
}
}
"#,
);
}
#[test]
fn goto_def_pat_range_from() {
check_name(
"RangeFrom",
r#"
//- minicore: range
fn f(ch: char) -> bool {
match ch {
'a'..$0 => true,
_ => false
}
}
"#,
);
}
#[test]
fn goto_def_expr_range() {
check_name(
"Range",
r#"
//- minicore: range
let x = 0.$0.1;
"#,
);
}
#[test]
fn goto_def_expr_range_from() {
check_name(
"RangeFrom",
r#"
//- minicore: range
fn f(arr: &[i32]) -> &[i32] {
&arr[0.$0.]
}
"#,
);
}
#[test]
fn goto_def_expr_range_inclusive() {
check_name(
"RangeInclusive",
r#"
//- minicore: range
let x = 0.$0.=1;
"#,
);
}
#[test]
fn goto_def_expr_range_full() {
check_name(
"RangeFull",
r#"
//- minicore: range
fn f(arr: &[i32]) -> &[i32] {
&arr[.$0.]
}
"#,
);
}
#[test]
fn goto_def_expr_range_to() {
check_name(
"RangeTo",
r#"
//- minicore: range
fn f(arr: &[i32]) -> &[i32] {
&arr[.$0.10]
}
"#,
);
}
#[test]
fn goto_def_expr_range_to_inclusive() {
check_name(
"RangeToInclusive",
r#"
//- minicore: range
fn f(arr: &[i32]) -> &[i32] {
&arr[.$0.=10]
}
"#,
);
}
#[test]
fn goto_def_in_included_file() {
check(
r#"
//- minicore:include
//- /main.rs
include!("a.rs");
fn main() {
foo();
}
//- /a.rs
fn func_in_include() {
//^^^^^^^^^^^^^^^
}
fn foo() {
func_in_include$0();
}
"#,
);
}
#[test]
fn goto_def_in_included_file_nested() {
check(
r#"
//- minicore:include
//- /main.rs
macro_rules! passthrough {
($($tt:tt)*) => { $($tt)* }
}
passthrough!(include!("a.rs"));
fn main() {
foo();
}
//- /a.rs
fn func_in_include() {
//^^^^^^^^^^^^^^^
}
fn foo() {
func_in_include$0();
}
"#,
);
}
#[test]
fn goto_def_in_included_file_inside_mod() {
check(
r#"
//- minicore:include
//- /main.rs
mod a {
include!("b.rs");
}
//- /b.rs
fn func_in_include() {
//^^^^^^^^^^^^^^^
}
fn foo() {
func_in_include$0();
}
"#,
);
check(
r#"
//- minicore:include
//- /main.rs
mod a {
include!("a.rs");
}
//- /a.rs
fn func_in_include() {
//^^^^^^^^^^^^^^^
}
fn foo() {
func_in_include$0();
}
"#,
);
}
#[test]
fn goto_def_if_items_same_name() {
check(
r#"
trait Trait {
type A;
const A: i32;
//^
}
struct T;
impl Trait for T {
type A = i32;
const A$0: i32 = -9;
}"#,
);
}
#[test]
fn goto_def_in_mac_call_in_attr_invoc() {
check(
r#"
//- proc_macros: identity
pub struct Struct {
// ^^^^^^
field: i32,
}
macro_rules! identity {
($($tt:tt)*) => {$($tt)*};
}
#[proc_macros::identity]
fn function() {
identity!(Struct$0 { field: 0 });
}
"#,
)
}
#[test]
fn goto_def_for_extern_crate() {
check(
r#"
//- /main.rs crate:main deps:std
extern crate std$0;
//- /std/lib.rs crate:std
// empty
//^file
"#,
)
}
#[test]
fn goto_def_for_renamed_extern_crate() {
check(
r#"
//- /main.rs crate:main deps:std
extern crate std as abc$0;
//- /std/lib.rs crate:std
// empty
//^file
"#,
)
}
#[test]
fn goto_def_in_items() {
check(
r#"
struct Foo;
//^^^
enum E { X(Foo$0) }
"#,
);
}
#[test]
fn goto_def_at_start_of_item() {
check(
r#"
struct Foo;
//^^^
enum E { X($0Foo) }
"#,
);
}
#[test]
fn goto_definition_resolves_correct_name() {
check(
r#"
//- /lib.rs
use a::Foo;
mod a;
mod b;
enum E { X(Foo$0) }
//- /a.rs
pub struct Foo;
//^^^
//- /b.rs
pub struct Foo;
"#,
);
}
#[test]
fn goto_def_for_module_declaration() {
check(
r#"
//- /lib.rs
mod $0foo;
//- /foo.rs
// empty
//^file
"#,
);
check(
r#"
//- /lib.rs
mod $0foo;
//- /foo/mod.rs
// empty
//^file
"#,
);
}
#[test]
fn goto_def_for_macros() {
check(
r#"
macro_rules! foo { () => { () } }
//^^^
fn bar() {
$0foo!();
}
"#,
);
}
#[test]
fn goto_def_for_macros_from_other_crates() {
check(
r#"
//- /lib.rs crate:main deps:foo
use foo::foo;
fn bar() {
$0foo!();
}
//- /foo/lib.rs crate:foo
#[macro_export]
macro_rules! foo { () => { () } }
//^^^
"#,
);
}
#[test]
fn goto_def_for_macros_in_use_tree() {
check(
r#"
//- /lib.rs crate:main deps:foo
use foo::foo$0;
//- /foo/lib.rs crate:foo
#[macro_export]
macro_rules! foo { () => { () } }
//^^^
"#,
);
}
#[test]
fn goto_def_for_macro_defined_fn_with_arg() {
check(
r#"
//- /lib.rs
macro_rules! define_fn {
($name:ident) => (fn $name() {})
}
define_fn!(foo);
//^^^
fn bar() {
$0foo();
}
"#,
);
}
#[test]
fn goto_def_for_macro_defined_fn_no_arg() {
check(
r#"
//- /lib.rs
macro_rules! define_fn {
() => (fn foo() {})
//^^^
}
define_fn!();
//^^^^^^^^^^^^^
fn bar() {
$0foo();
}
"#,
);
}
#[test]
fn goto_definition_works_for_macro_inside_pattern() {
check(
r#"
//- /lib.rs
macro_rules! foo {() => {0}}
//^^^
fn bar() {
match (0,1) {
($0foo!(), _) => {}
}
}
"#,
);
}
#[test]
fn goto_definition_works_for_macro_inside_match_arm_lhs() {
check(
r#"
//- /lib.rs
macro_rules! foo {() => {0}}
//^^^
fn bar() {
match 0 {
$0foo!() => {}
}
}
"#,
);
}
#[test]
fn goto_definition_works_for_consts_inside_range_pattern() {
check(
r#"
//- /lib.rs
const A: u32 = 0;
//^
fn bar(v: u32) {
match v {
0..=$0A => {}
_ => {}
}
}
"#,
);
}
#[test]
fn goto_def_for_use_alias() {
check(
r#"
//- /lib.rs crate:main deps:foo
use foo as bar$0;
//- /foo/lib.rs crate:foo
// empty
//^file
"#,
);
}
#[test]
fn goto_def_for_use_alias_foo_macro() {
check(
r#"
//- /lib.rs crate:main deps:foo
use foo::foo as bar$0;
//- /foo/lib.rs crate:foo
#[macro_export]
macro_rules! foo { () => { () } }
//^^^
"#,
);
}
#[test]
fn goto_def_for_methods() {
check(
r#"
struct Foo;
impl Foo {
fn frobnicate(&self) { }
//^^^^^^^^^^
}
fn bar(foo: &Foo) {
foo.frobnicate$0();
}
"#,
);
}
#[test]
fn goto_def_for_fields() {
check(
r#"
struct Foo {
spam: u32,
} //^^^^
fn bar(foo: &Foo) {
foo.spam$0;
}
"#,
);
}
#[test]
fn goto_def_for_record_fields() {
check(
r#"
//- /lib.rs
struct Foo {
spam: u32,
} //^^^^
fn bar() -> Foo {
Foo {
spam$0: 0,
}
}
"#,
);
}
#[test]
fn goto_def_for_record_pat_fields() {
check(
r#"
//- /lib.rs
struct Foo {
spam: u32,
} //^^^^
fn bar(foo: Foo) -> Foo {
let Foo { spam$0: _, } = foo
}
"#,
);
}
#[test]
fn goto_def_for_record_fields_macros() {
check(
r"
macro_rules! m { () => { 92 };}
struct Foo { spam: u32 }
//^^^^
fn bar() -> Foo {
Foo { spam$0: m!() }
}
",
);
}
#[test]
fn goto_for_tuple_fields() {
check(
r#"
struct Foo(u32);
//^^^
fn bar() {
let foo = Foo(0);
foo.$00;
}
"#,
);
}
#[test]
fn goto_def_for_ufcs_inherent_methods() {
check(
r#"
struct Foo;
impl Foo {
fn frobnicate() { }
} //^^^^^^^^^^
fn bar(foo: &Foo) {
Foo::frobnicate$0();
}
"#,
);
}
#[test]
fn goto_def_for_ufcs_trait_methods_through_traits() {
check(
r#"
trait Foo {
fn frobnicate();
} //^^^^^^^^^^
fn bar() {
Foo::frobnicate$0();
}
"#,
);
}
#[test]
fn goto_def_for_ufcs_trait_methods_through_self() {
check(
r#"
struct Foo;
trait Trait {
fn frobnicate();
} //^^^^^^^^^^
impl Trait for Foo {}
fn bar() {
Foo::frobnicate$0();
}
"#,
);
}
#[test]
fn goto_definition_on_self() {
check(
r#"
struct Foo;
impl Foo {
//^^^
pub fn new() -> Self {
Self$0 {}
}
}
"#,
);
check(
r#"
struct Foo;
impl Foo {
//^^^
pub fn new() -> Self$0 {
Self {}
}
}
"#,
);
check(
r#"
enum Foo { A }
impl Foo {
//^^^
pub fn new() -> Self$0 {
Foo::A
}
}
"#,
);
check(
r#"
enum Foo { A }
impl Foo {
//^^^
pub fn thing(a: &Self$0) {
}
}
"#,
);
}
#[test]
fn goto_definition_on_self_in_trait_impl() {
check(
r#"
struct Foo;
trait Make {
fn new() -> Self;
}
impl Make for Foo {
//^^^
fn new() -> Self {
Self$0 {}
}
}
"#,
);
check(
r#"
struct Foo;
trait Make {
fn new() -> Self;
}
impl Make for Foo {
//^^^
fn new() -> Self$0 {
Self {}
}
}
"#,
);
}
#[test]
fn goto_def_when_used_on_definition_name_itself() {
check(
r#"
struct Foo$0 { value: u32 }
//^^^
"#,
);
check(
r#"
struct Foo {
field$0: string,
} //^^^^^
"#,
);
check(
r#"
fn foo_test$0() { }
//^^^^^^^^
"#,
);
check(
r#"
enum Foo$0 { Variant }
//^^^
"#,
);
check(
r#"
enum Foo {
Variant1,
Variant2$0,
//^^^^^^^^
Variant3,
}
"#,
);
check(
r#"
static INNER$0: &str = "";
//^^^^^
"#,
);
check(
r#"
const INNER$0: &str = "";
//^^^^^
"#,
);
check(
r#"
type Thing$0 = Option<()>;
//^^^^^
"#,
);
check(
r#"
trait Foo$0 { }
//^^^
"#,
);
check(
r#"
trait Foo$0 = ;
//^^^
"#,
);
check(
r#"
mod bar$0 { }
//^^^
"#,
);
}
#[test]
fn goto_from_macro() {
check(
r#"
macro_rules! id {
($($tt:tt)*) => { $($tt)* }
}
fn foo() {}
//^^^
id! {
fn bar() {
fo$0o();
}
}
mod confuse_index { fn foo(); }
"#,
);
}
#[test]
fn goto_through_format() {
check(
r#"
//- minicore: fmt
#[macro_export]
macro_rules! format {
($($arg:tt)*) => ($crate::fmt::format($crate::__export::format_args!($($arg)*)))
}
pub mod __export {
pub use core::format_args;
fn foo() {} // for index confusion
}
fn foo() -> i8 {}
//^^^
fn test() {
format!("{}", fo$0o())
}
"#,
);
}
#[test]
fn goto_through_included_file() {
check(
r#"
//- /main.rs
#[rustc_builtin_macro]
macro_rules! include {}
include!("foo.rs");
fn f() {
foo$0();
}
mod confuse_index {
pub fn foo() {}
}
//- /foo.rs
fn foo() {}
//^^^
"#,
);
}
#[test]
fn goto_through_included_file_struct_with_doc_comment() {
check(
r#"
//- /main.rs
#[rustc_builtin_macro]
macro_rules! include {}
include!("foo.rs");
fn f() {
let x = Foo$0;
}
mod confuse_index {
pub struct Foo;
}
//- /foo.rs
/// This is a doc comment
pub struct Foo;
//^^^
"#,
);
}
#[test]
fn goto_for_type_param() {
check(
r#"
struct Foo<T: Clone> { t: $0T }
//^
"#,
);
}
#[test]
fn goto_within_macro() {
check(
r#"
macro_rules! id {
($($tt:tt)*) => ($($tt)*)
}
fn foo() {
let x = 1;
//^
id!({
let y = $0x;
let z = y;
});
}
"#,
);
check(
r#"
macro_rules! id {
($($tt:tt)*) => ($($tt)*)
}
fn foo() {
let x = 1;
id!({
let y = x;
//^
let z = $0y;
});
}
"#,
);
}
#[test]
fn goto_def_in_local_fn() {
check(
r#"
fn main() {
fn foo() {
let x = 92;
//^
$0x;
}
}
"#,
);
}
#[test]
fn goto_def_in_local_macro() {
check(
r#"
fn bar() {
macro_rules! foo { () => { () } }
//^^^
$0foo!();
}
"#,
);
}
#[test]
fn goto_def_for_field_init_shorthand() {
check(
r#"
struct Foo { x: i32 }
//^
fn main() {
let x = 92;
//^
Foo { x$0 };
}
"#,
)
}
#[test]
fn goto_def_for_enum_variant_field() {
check(
r#"
enum Foo {
Bar { x: i32 }
//^
}
fn baz(foo: Foo) {
match foo {
Foo::Bar { x$0 } => x
//^
};
}
"#,
);
}
#[test]
fn goto_def_for_enum_variant_self_pattern_const() {
check(
r#"
enum Foo { Bar }
//^^^
impl Foo {
fn baz(self) {
match self { Self::Bar$0 => {} }
}
}
"#,
);
}
#[test]
fn goto_def_for_enum_variant_self_pattern_record() {
check(
r#"
enum Foo { Bar { val: i32 } }
//^^^
impl Foo {
fn baz(self) -> i32 {
match self { Self::Bar$0 { val } => {} }
}
}
"#,
);
}
#[test]
fn goto_def_for_enum_variant_self_expr_const() {
check(
r#"
enum Foo { Bar }
//^^^
impl Foo {
fn baz(self) { Self::Bar$0; }
}
"#,
);
}
#[test]
fn goto_def_for_enum_variant_self_expr_record() {
check(
r#"
enum Foo { Bar { val: i32 } }
//^^^
impl Foo {
fn baz(self) { Self::Bar$0 {val: 4}; }
}
"#,
);
}
#[test]
fn goto_def_for_type_alias_generic_parameter() {
check(
r#"
type Alias<T> = T$0;
//^
"#,
)
}
#[test]
fn goto_def_for_macro_container() {
check(
r#"
//- /lib.rs crate:main deps:foo
foo::module$0::mac!();
//- /foo/lib.rs crate:foo
pub mod module {
//^^^^^^
#[macro_export]
macro_rules! _mac { () => { () } }
pub use crate::_mac as mac;
}
"#,
);
}
#[test]
fn goto_def_for_assoc_ty_in_path() {
check(
r#"
trait Iterator {
type Item;
//^^^^
}
fn f() -> impl Iterator<Item$0 = u8> {}
"#,
);
}
#[test]
fn goto_def_for_super_assoc_ty_in_path() {
check(
r#"
trait Super {
type Item;
//^^^^
}
trait Sub: Super {}
fn f() -> impl Sub<Item$0 = u8> {}
"#,
);
}
#[test]
fn goto_def_for_module_declaration_in_path_if_types_and_values_same_name() {
check(
r#"
mod bar {
pub struct Foo {}
//^^^
pub fn Foo() {}
}
fn baz() {
let _foo_enum: bar::Foo$0 = bar::Foo {};
}
"#,
)
}
#[test]
fn unknown_assoc_ty() {
check_unresolved(
r#"
trait Iterator { type Item; }
fn f() -> impl Iterator<Invalid$0 = u8> {}
"#,
)
}
#[test]
fn goto_def_for_assoc_ty_in_path_multiple() {
check(
r#"
trait Iterator {
type A;
//^
type B;
}
fn f() -> impl Iterator<A$0 = u8, B = ()> {}
"#,
);
check(
r#"
trait Iterator {
type A;
type B;
//^
}
fn f() -> impl Iterator<A = u8, B$0 = ()> {}
"#,
);
}
#[test]
fn goto_def_for_assoc_ty_ufcs() {
check(
r#"
trait Iterator {
type Item;
//^^^^
}
fn g() -> <() as Iterator<Item$0 = ()>>::Item {}
"#,
);
}
#[test]
fn goto_def_for_assoc_ty_ufcs_multiple() {
check(
r#"
trait Iterator {
type A;
//^
type B;
}
fn g() -> <() as Iterator<A$0 = (), B = u8>>::B {}
"#,
);
check(
r#"
trait Iterator {
type A;
type B;
//^
}
fn g() -> <() as Iterator<A = (), B$0 = u8>>::A {}
"#,
);
}
#[test]
fn goto_self_param_ty_specified() {
check(
r#"
struct Foo {}
impl Foo {
fn bar(self: &Foo) {
//^^^^
let foo = sel$0f;
}
}"#,
)
}
#[test]
fn goto_self_param_on_decl() {
check(
r#"
struct Foo {}
impl Foo {
fn bar(&self$0) {
//^^^^
}
}"#,
)
}
#[test]
fn goto_lifetime_param_on_decl() {
check(
r#"
fn foo<'foobar$0>(_: &'foobar ()) {
//^^^^^^^
}"#,
)
}
#[test]
fn goto_lifetime_param_decl() {
check(
r#"
fn foo<'foobar>(_: &'foobar$0 ()) {
//^^^^^^^
}"#,
)
}
#[test]
fn goto_lifetime_param_decl_nested() {
check(
r#"
fn foo<'foobar>(_: &'foobar ()) {
fn foo<'foobar>(_: &'foobar$0 ()) {}
//^^^^^^^
}"#,
)
}
#[test]
fn goto_lifetime_hrtb() {
check_unresolved(
r#"
trait Foo<T> {}
fn foo<T>() where for<'a> T: Foo<&'a$0 (u8, u16)>, {}
//^^
"#,
);
check_unresolved(
r#"
trait Foo<T> {}
fn foo<T>() where for<'a$0> T: Foo<&'a (u8, u16)>, {}
//^^
"#,
);
}
#[test]
fn goto_lifetime_hrtb_for_type() {
check_unresolved(
r#"trait Foo<T> {}
fn foo<T>() where T: for<'a> Foo<&'a$0 (u8, u16)>, {}
//^^
"#,
);
}
#[test]
fn goto_label() {
check(
r#"
fn foo<'foo>(_: &'foo ()) {
'foo: {
//^^^^
'bar: loop {
break 'foo$0;
}
}
}"#,
)
}
#[test]
fn goto_def_for_intra_doc_link_same_file() {
check(
r#"
/// Blah, [`bar`](bar) .. [`foo`](foo$0) has [`bar`](bar)
pub fn bar() { }
/// You might want to see [`std::fs::read()`] too.
pub fn foo() { }
//^^^
}"#,
)
}
#[test]
fn goto_def_for_intra_doc_link_inner() {
check(
r#"
//- /main.rs
mod m;
struct S;
//^
//- /m.rs
//! [`super::S$0`]
"#,
)
}
#[test]
fn goto_incomplete_field() {
check(
r#"
struct A { a: u32 }
//^
fn foo() { A { a$0: }; }
"#,
)
}
#[test]
fn goto_proc_macro() {
check(
r#"
//- /main.rs crate:main deps:mac
use mac::fn_macro;
fn_macro$0!();
//- /mac.rs crate:mac
#![crate_type="proc-macro"]
#[proc_macro]
fn fn_macro() {}
//^^^^^^^^
"#,
)
}
#[test]
fn goto_intra_doc_links() {
check(
r#"
pub mod theitem {
/// This is the item. Cool!
pub struct TheItem;
//^^^^^^^
}
/// Gives you a [`TheItem$0`].
///
/// [`TheItem`]: theitem::TheItem
pub fn gimme() -> theitem::TheItem {
theitem::TheItem
}
"#,
);
}
#[test]
fn goto_ident_from_pat_macro() {
check(
r#"
macro_rules! pat {
($name:ident) => { Enum::Variant1($name) }
}
enum Enum {
Variant1(u8),
Variant2,
}
fn f(e: Enum) {
match e {
pat!(bind) => {
//^^^^
bind$0
}
Enum::Variant2 => {}
}
}
"#,
);
}
#[test]
fn goto_include() {
check(
r#"
//- /main.rs
#[rustc_builtin_macro]
macro_rules! include_str {}
fn main() {
let str = include_str!("foo.txt$0");
}
//- /foo.txt
// empty
//^file
"#,
);
}
#[test]
fn goto_include_has_eager_input() {
check(
r#"
//- /main.rs
#[rustc_builtin_macro]
macro_rules! include_str {}
#[rustc_builtin_macro]
macro_rules! concat {}
fn main() {
let str = include_str!(concat!("foo", ".tx$0t"));
}
//- /foo.txt
// empty
//^file
"#,
);
}
#[test]
fn goto_doc_include_str() {
check(
r#"
//- /main.rs
#[rustc_builtin_macro]
macro_rules! include_str {}
#[doc = include_str!("docs.md$0")]
struct Item;
//- /docs.md
// docs
//^file
"#,
);
}
#[test]
fn goto_shadow_include() {
check(
r#"
//- /main.rs
macro_rules! include {
("included.rs") => {}
}
include!("included.rs$0");
//- /included.rs
// empty
"#,
);
}
mod goto_impl_of_trait_fn {
use super::check;
#[test]
fn cursor_on_impl() {
check(
r#"
trait Twait {
fn a();
}
struct Stwuct;
impl Twait for Stwuct {
fn a$0();
//^
}
"#,
);
}
#[test]
fn method_call() {
check(
r#"
trait Twait {
fn a(&self);
}
struct Stwuct;
impl Twait for Stwuct {
fn a(&self){};
//^
}
fn f() {
let s = Stwuct;
s.a$0();
}
"#,
);
}
#[test]
fn method_call_inside_block() {
check(
r#"
trait Twait {
fn a(&self);
}
fn outer() {
struct Stwuct;
impl Twait for Stwuct {
fn a(&self){}
//^
}
fn f() {
let s = Stwuct;
s.a$0();
}
}
"#,
);
}
#[test]
fn path_call() {
check(
r#"
trait Twait {
fn a(&self);
}
struct Stwuct;
impl Twait for Stwuct {
fn a(&self){};
//^
}
fn f() {
let s = Stwuct;
Stwuct::a$0(&s);
}
"#,
);
}
#[test]
fn where_clause_can_work() {
check(
r#"
trait G {
fn g(&self);
}
trait Bound{}
trait EA{}
struct Gen<T>(T);
impl <T:EA> G for Gen<T> {
fn g(&self) {
}
}
impl <T> G for Gen<T>
where T : Bound
{
fn g(&self){
//^
}
}
struct A;
impl Bound for A{}
fn f() {
let gen = Gen::<A>(A);
gen.g$0();
}
"#,
);
}
#[test]
fn wc_case_is_ok() {
check(
r#"
trait G {
fn g(&self);
}
trait BParent{}
trait Bound: BParent{}
struct Gen<T>(T);
impl <T> G for Gen<T>
where T : Bound
{
fn g(&self){
//^
}
}
struct A;
impl Bound for A{}
fn f() {
let gen = Gen::<A>(A);
gen.g$0();
}
"#,
);
}
#[test]
fn method_call_defaulted() {
check(
r#"
trait Twait {
fn a(&self) {}
//^
}
struct Stwuct;
impl Twait for Stwuct {
}
fn f() {
let s = Stwuct;
s.a$0();
}
"#,
);
}
#[test]
fn method_call_on_generic() {
check(
r#"
trait Twait {
fn a(&self) {}
//^
}
fn f<T: Twait>(s: T) {
s.a$0();
}
"#,
);
}
}
#[test]
fn goto_def_of_trait_impl_const() {
check(
r#"
trait Twait {
const NOMS: bool;
// ^^^^
}
struct Stwuct;
impl Twait for Stwuct {
const NOMS$0: bool = true;
}
"#,
);
}
#[test]
fn goto_def_of_trait_impl_type_alias() {
check(
r#"
trait Twait {
type IsBad;
// ^^^^^
}
struct Stwuct;
impl Twait for Stwuct {
type IsBad$0 = !;
}
"#,
);
}
#[test]
fn goto_def_derive_input() {
check(
r#"
//- minicore:derive
#[rustc_builtin_macro]
pub macro Copy {}
// ^^^^
#[derive(Copy$0)]
struct Foo;
"#,
);
check(
r#"
//- minicore:derive
#[rustc_builtin_macro]
pub macro Copy {}
// ^^^^
#[cfg_attr(feature = "false", derive)]
#[derive(Copy$0)]
struct Foo;
"#,
);
check(
r#"
//- minicore:derive
mod foo {
#[rustc_builtin_macro]
pub macro Copy {}
// ^^^^
}
#[derive(foo::Copy$0)]
struct Foo;
"#,
);
check(
r#"
//- minicore:derive
mod foo {
// ^^^
#[rustc_builtin_macro]
pub macro Copy {}
}
#[derive(foo$0::Copy)]
struct Foo;
"#,
);
}
#[test]
fn goto_def_in_macro_multi() {
check(
r#"
struct Foo {
foo: ()
//^^^
}
macro_rules! foo {
($ident:ident) => {
fn $ident(Foo { $ident }: Foo) {}
}
}
foo!(foo$0);
//^^^
//^^^
"#,
);
check(
r#"
fn bar() {}
//^^^
struct bar;
//^^^
macro_rules! foo {
($ident:ident) => {
fn foo() {
let _: $ident = $ident;
}
}
}
foo!(bar$0);
"#,
);
}
#[test]
fn goto_await_poll() {
check(
r#"
//- minicore: future
struct MyFut;
impl core::future::Future for MyFut {
type Output = ();
fn poll(
//^^^^
self: std::pin::Pin<&mut Self>,
cx: &mut std::task::Context<'_>
) -> std::task::Poll<Self::Output>
{
()
}
}
fn f() {
MyFut.await$0;
}
"#,
);
}
#[test]
fn goto_await_into_future_poll() {
check(
r#"
//- minicore: future
struct Futurable;
impl core::future::IntoFuture for Futurable {
type IntoFuture = MyFut;
}
struct MyFut;
impl core::future::Future for MyFut {
type Output = ();
fn poll(
//^^^^
self: std::pin::Pin<&mut Self>,
cx: &mut std::task::Context<'_>
) -> std::task::Poll<Self::Output>
{
()
}
}
fn f() {
Futurable.await$0;
}
"#,
);
}
#[test]
fn goto_try_op() {
check(
r#"
//- minicore: try
struct Struct;
impl core::ops::Try for Struct {
fn branch(
//^^^^^^
self
) {}
}
fn f() {
Struct?$0;
}
"#,
);
}
#[test]
fn goto_index_op() {
check(
r#"
//- minicore: index
struct Struct;
impl core::ops::Index<usize> for Struct {
fn index(
//^^^^^
self
) {}
}
fn f() {
Struct[0]$0;
}
"#,
);
}
#[test]
fn goto_index_mut_op() {
check(
r#"
//- minicore: index
struct Foo;
struct Bar;
impl core::ops::Index<usize> for Foo {
type Output = Bar;
fn index(&self, index: usize) -> &Self::Output {}
}
impl core::ops::IndexMut<usize> for Foo {
fn index_mut(&mut self, index: usize) -> &mut Self::Output {}
//^^^^^^^^^
}
fn f() {
let mut foo = Foo;
foo[0]$0 = Bar;
}
"#,
);
}
#[test]
fn goto_prefix_op() {
check(
r#"
//- minicore: deref
struct Struct;
impl core::ops::Deref for Struct {
fn deref(
//^^^^^
self
) {}
}
fn f() {
$0*Struct;
}
"#,
);
}
#[test]
fn goto_deref_mut() {
check(
r#"
//- minicore: deref, deref_mut
struct Foo;
struct Bar;
impl core::ops::Deref for Foo {
type Target = Bar;
fn deref(&self) -> &Self::Target {}
}
impl core::ops::DerefMut for Foo {
fn deref_mut(&mut self) -> &mut Self::Target {}
//^^^^^^^^^
}
fn f() {
let a = Foo;
$0*a = Bar;
}
"#,
);
}
#[test]
fn goto_bin_op() {
check(
r#"
//- minicore: add
struct Struct;
impl core::ops::Add for Struct {
fn add(
//^^^
self
) {}
}
fn f() {
Struct +$0 Struct;
}
"#,
);
}
#[test]
fn goto_bin_op_multiple_impl() {
check(
r#"
//- minicore: add
struct S;
impl core::ops::Add for S {
fn add(
//^^^
) {}
}
impl core::ops::Add<usize> for S {
fn add(
) {}
}
fn f() {
S +$0 S
}
"#,
);
check(
r#"
//- minicore: add
struct S;
impl core::ops::Add for S {
fn add(
) {}
}
impl core::ops::Add<usize> for S {
fn add(
//^^^
) {}
}
fn f() {
S +$0 0usize
}
"#,
);
}
#[test]
fn path_call_multiple_trait_impl() {
check(
r#"
trait Trait<T> {
fn f(_: T);
}
impl Trait<i32> for usize {
fn f(_: i32) {}
//^
}
impl Trait<i64> for usize {
fn f(_: i64) {}
}
fn main() {
usize::f$0(0i32);
}
"#,
);
check(
r#"
trait Trait<T> {
fn f(_: T);
}
impl Trait<i32> for usize {
fn f(_: i32) {}
}
impl Trait<i64> for usize {
fn f(_: i64) {}
//^
}
fn main() {
usize::f$0(0i64);
}
"#,
)
}
#[test]
fn query_impls_in_nearest_block() {
check(
r#"
struct S1;
impl S1 {
fn e() -> () {}
}
fn f1() {
struct S1;
impl S1 {
fn e() -> () {}
//^
}
fn f2() {
fn f3() {
S1::e$0();
}
}
}
"#,
);
check(
r#"
struct S1;
impl S1 {
fn e() -> () {}
}
fn f1() {
struct S1;
impl S1 {
fn e() -> () {}
//^
}
fn f2() {
struct S2;
S1::e$0();
}
}
fn f12() {
struct S1;
impl S1 {
fn e() -> () {}
}
}
"#,
);
check(
r#"
struct S1;
impl S1 {
fn e() -> () {}
//^
}
fn f2() {
struct S2;
S1::e$0();
}
"#,
);
}
#[test]
fn implicit_format_args() {
check(
r#"
//- minicore: fmt
fn test() {
let a = "world";
// ^
format_args!("hello {a$0}");
}
"#,
);
}
#[test]
fn goto_macro_def_from_macro_use() {
check(
r#"
//- /main.rs crate:main deps:mac
#[macro_use(foo$0)]
extern crate mac;
//- /mac.rs crate:mac
#[macro_export]
macro_rules! foo {
//^^^
() => {};
}
"#,
);
check(
r#"
//- /main.rs crate:main deps:mac
#[macro_use(foo, bar$0, baz)]
extern crate mac;
//- /mac.rs crate:mac
#[macro_export]
macro_rules! foo {
() => {};
}
#[macro_export]
macro_rules! bar {
//^^^
() => {};
}
#[macro_export]
macro_rules! baz {
() => {};
}
"#,
);
}
#[test]
fn goto_shadowed_preludes_in_block_module() {
check(
r#"
//- /main.rs crate:main edition:2021 deps:core
pub struct S;
//^
fn main() {
fn f() -> S$0 {
fn inner() {} // forces a block def map
return S;
}
}
//- /core.rs crate:core
pub mod prelude {
pub mod rust_2021 {
pub enum S;
}
}
"#,
);
}
#[test]
fn goto_def_on_return_kw() {
check(
r#"
macro_rules! N {
($i:ident, $x:expr, $blk:expr) => {
for $i in 0..$x {
$blk
}
};
}
fn main() {
fn f() {
// ^^
N!(i, 5, {
println!("{}", i);
return$0;
});
for i in 1..5 {
return;
}
(|| {
return;
})();
}
}
"#,
)
}
#[test]
fn goto_def_on_return_kw_in_closure() {
check(
r#"
macro_rules! N {
($i:ident, $x:expr, $blk:expr) => {
for $i in 0..$x {
$blk
}
};
}
fn main() {
fn f() {
N!(i, 5, {
println!("{}", i);
return;
});
for i in 1..5 {
return;
}
(|| {
// ^
return$0;
})();
}
}
"#,
)
}
#[test]
fn goto_def_on_break_kw() {
check(
r#"
fn main() {
for i in 1..5 {
// ^^^
break$0;
}
}
"#,
)
}
#[test]
fn goto_def_on_continue_kw() {
check(
r#"
fn main() {
for i in 1..5 {
// ^^^
continue$0;
}
}
"#,
)
}
#[test]
fn goto_def_on_break_kw_for_block() {
check(
r#"
fn main() {
'a:{
// ^^^
break$0 'a;
}
}
"#,
)
}
#[test]
fn goto_def_on_break_with_label() {
check(
r#"
fn foo() {
'outer: loop {
// ^^^^
'inner: loop {
'innermost: loop {
}
break$0 'outer;
}
}
}
"#,
);
}
#[test]
fn label_inside_macro() {
check(
r#"
macro_rules! m {
($s:stmt) => { $s };
}
fn foo() {
'label: loop {
// ^^^^^^
m!(continue 'label$0);
}
}
"#,
);
}
#[test]
fn goto_def_on_return_in_try() {
check(
r#"
fn main() {
fn f() {
// ^^
try {
return$0;
}
return;
}
}
"#,
)
}
#[test]
fn goto_def_on_break_in_try() {
check(
r#"
fn main() {
for i in 1..100 {
// ^^^
let x: Result<(), ()> = try {
break$0;
};
}
}
"#,
)
}
#[test]
fn goto_def_on_return_in_async_block() {
check(
r#"
fn main() {
async {
// ^^^^^
return$0;
}
}
"#,
)
}
#[test]
fn goto_def_on_for_kw() {
check(
r#"
fn main() {
for$0 i in 1..5 {}
// ^^^
}
"#,
)
}
#[test]
fn goto_def_on_fn_kw() {
check(
r#"
fn main() {
fn$0 foo() {}
// ^^
}
"#,
)
}
#[test]
fn shadow_builtin_macro() {
check(
r#"
//- minicore: column
//- /a.rs crate:a
#[macro_export]
macro_rules! column { () => {} }
// ^^^^^^
//- /b.rs crate:b deps:a
use a::column;
fn foo() {
$0column!();
}
"#,
);
}
#[test]
fn issue_18138() {
check(
r#"
mod foo {
macro_rules! x {
() => {
pub struct Foo;
// ^^^
};
}
pub(crate) use x as m;
}
mod bar {
use crate::m;
m!();
// ^^^^^
fn qux() {
Foo$0;
}
}
mod m {}
use foo::m;
"#,
);
}
#[test]
fn macro_label_hygiene() {
check(
r#"
macro_rules! m {
($x:stmt) => {
'bar: loop { $x }
};
}
fn foo() {
'bar: loop {
// ^^^^
m!(continue 'bar$0);
}
}
"#,
);
}
}