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-rw-r--r--src/tools/rust-analyzer/crates/ide/src/references.rs1636
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diff --git a/src/tools/rust-analyzer/crates/ide/src/references.rs b/src/tools/rust-analyzer/crates/ide/src/references.rs
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index 000000000..1a6beec18
--- /dev/null
+++ b/src/tools/rust-analyzer/crates/ide/src/references.rs
@@ -0,0 +1,1636 @@
+//! This module implements a reference search.
+//! First, the element at the cursor position must be either an `ast::Name`
+//! or `ast::NameRef`. If it's an `ast::NameRef`, at the classification step we
+//! try to resolve the direct tree parent of this element, otherwise we
+//! already have a definition and just need to get its HIR together with
+//! some information that is needed for further steps of searching.
+//! After that, we collect files that might contain references and look
+//! for text occurrences of the identifier. If there's an `ast::NameRef`
+//! at the index that the match starts at and its tree parent is
+//! resolved to the search element definition, we get a reference.
+
+use hir::{PathResolution, Semantics};
+use ide_db::{
+ base_db::FileId,
+ defs::{Definition, NameClass, NameRefClass},
+ search::{ReferenceCategory, SearchScope, UsageSearchResult},
+ FxHashMap, RootDatabase,
+};
+use syntax::{
+ algo::find_node_at_offset,
+ ast::{self, HasName},
+ match_ast, AstNode,
+ SyntaxKind::*,
+ SyntaxNode, TextRange, TextSize, T,
+};
+
+use crate::{FilePosition, NavigationTarget, TryToNav};
+
+#[derive(Debug, Clone)]
+pub struct ReferenceSearchResult {
+ pub declaration: Option<Declaration>,
+ pub references: FxHashMap<FileId, Vec<(TextRange, Option<ReferenceCategory>)>>,
+}
+
+#[derive(Debug, Clone)]
+pub struct Declaration {
+ pub nav: NavigationTarget,
+ pub is_mut: bool,
+}
+
+// Feature: Find All References
+//
+// Shows all references of the item at the cursor location
+//
+// |===
+// | Editor | Shortcut
+//
+// | VS Code | kbd:[Shift+Alt+F12]
+// |===
+//
+// image::https://user-images.githubusercontent.com/48062697/113020670-b7c34f00-917a-11eb-8003-370ac5f2b3cb.gif[]
+pub(crate) fn find_all_refs(
+ sema: &Semantics<'_, RootDatabase>,
+ position: FilePosition,
+ search_scope: Option<SearchScope>,
+) -> Option<Vec<ReferenceSearchResult>> {
+ let _p = profile::span("find_all_refs");
+ let syntax = sema.parse(position.file_id).syntax().clone();
+ let make_searcher = |literal_search: bool| {
+ move |def: Definition| {
+ let declaration = match def {
+ Definition::Module(module) => {
+ Some(NavigationTarget::from_module_to_decl(sema.db, module))
+ }
+ def => def.try_to_nav(sema.db),
+ }
+ .map(|nav| {
+ let decl_range = nav.focus_or_full_range();
+ Declaration {
+ is_mut: decl_mutability(&def, sema.parse(nav.file_id).syntax(), decl_range),
+ nav,
+ }
+ });
+ let mut usages =
+ def.usages(sema).set_scope(search_scope.clone()).include_self_refs().all();
+
+ if literal_search {
+ retain_adt_literal_usages(&mut usages, def, sema);
+ }
+
+ let references = usages
+ .into_iter()
+ .map(|(file_id, refs)| {
+ (
+ file_id,
+ refs.into_iter()
+ .map(|file_ref| (file_ref.range, file_ref.category))
+ .collect(),
+ )
+ })
+ .collect();
+
+ ReferenceSearchResult { declaration, references }
+ }
+ };
+
+ match name_for_constructor_search(&syntax, position) {
+ Some(name) => {
+ let def = match NameClass::classify(sema, &name)? {
+ NameClass::Definition(it) | NameClass::ConstReference(it) => it,
+ NameClass::PatFieldShorthand { local_def: _, field_ref } => {
+ Definition::Field(field_ref)
+ }
+ };
+ Some(vec![make_searcher(true)(def)])
+ }
+ None => {
+ let search = make_searcher(false);
+ Some(find_defs(sema, &syntax, position.offset)?.map(search).collect())
+ }
+ }
+}
+
+pub(crate) fn find_defs<'a>(
+ sema: &'a Semantics<'_, RootDatabase>,
+ syntax: &SyntaxNode,
+ offset: TextSize,
+) -> Option<impl Iterator<Item = Definition> + 'a> {
+ let token = syntax.token_at_offset(offset).find(|t| {
+ matches!(
+ t.kind(),
+ IDENT | INT_NUMBER | LIFETIME_IDENT | T![self] | T![super] | T![crate] | T![Self]
+ )
+ });
+ token.map(|token| {
+ sema.descend_into_macros_with_same_text(token)
+ .into_iter()
+ .filter_map(|it| ast::NameLike::cast(it.parent()?))
+ .filter_map(move |name_like| {
+ let def = match name_like {
+ ast::NameLike::NameRef(name_ref) => {
+ match NameRefClass::classify(sema, &name_ref)? {
+ NameRefClass::Definition(def) => def,
+ NameRefClass::FieldShorthand { local_ref, field_ref: _ } => {
+ Definition::Local(local_ref)
+ }
+ }
+ }
+ ast::NameLike::Name(name) => match NameClass::classify(sema, &name)? {
+ NameClass::Definition(it) | NameClass::ConstReference(it) => it,
+ NameClass::PatFieldShorthand { local_def, field_ref: _ } => {
+ Definition::Local(local_def)
+ }
+ },
+ ast::NameLike::Lifetime(lifetime) => {
+ NameRefClass::classify_lifetime(sema, &lifetime)
+ .and_then(|class| match class {
+ NameRefClass::Definition(it) => Some(it),
+ _ => None,
+ })
+ .or_else(|| {
+ NameClass::classify_lifetime(sema, &lifetime)
+ .and_then(NameClass::defined)
+ })?
+ }
+ };
+ Some(def)
+ })
+ })
+}
+
+pub(crate) fn decl_mutability(def: &Definition, syntax: &SyntaxNode, range: TextRange) -> bool {
+ match def {
+ Definition::Local(_) | Definition::Field(_) => {}
+ _ => return false,
+ };
+
+ match find_node_at_offset::<ast::LetStmt>(syntax, range.start()) {
+ Some(stmt) if stmt.initializer().is_some() => match stmt.pat() {
+ Some(ast::Pat::IdentPat(it)) => it.mut_token().is_some(),
+ _ => false,
+ },
+ _ => false,
+ }
+}
+
+/// Filter out all non-literal usages for adt-defs
+fn retain_adt_literal_usages(
+ usages: &mut UsageSearchResult,
+ def: Definition,
+ sema: &Semantics<'_, RootDatabase>,
+) {
+ let refs = usages.references.values_mut();
+ match def {
+ Definition::Adt(hir::Adt::Enum(enum_)) => {
+ refs.for_each(|it| {
+ it.retain(|reference| {
+ reference
+ .name
+ .as_name_ref()
+ .map_or(false, |name_ref| is_enum_lit_name_ref(sema, enum_, name_ref))
+ })
+ });
+ usages.references.retain(|_, it| !it.is_empty());
+ }
+ Definition::Adt(_) | Definition::Variant(_) => {
+ refs.for_each(|it| {
+ it.retain(|reference| reference.name.as_name_ref().map_or(false, is_lit_name_ref))
+ });
+ usages.references.retain(|_, it| !it.is_empty());
+ }
+ _ => {}
+ }
+}
+
+/// Returns `Some` if the cursor is at a position for an item to search for all its constructor/literal usages
+fn name_for_constructor_search(syntax: &SyntaxNode, position: FilePosition) -> Option<ast::Name> {
+ let token = syntax.token_at_offset(position.offset).right_biased()?;
+ let token_parent = token.parent()?;
+ let kind = token.kind();
+ if kind == T![;] {
+ ast::Struct::cast(token_parent)
+ .filter(|struct_| struct_.field_list().is_none())
+ .and_then(|struct_| struct_.name())
+ } else if kind == T!['{'] {
+ match_ast! {
+ match token_parent {
+ ast::RecordFieldList(rfl) => match_ast! {
+ match (rfl.syntax().parent()?) {
+ ast::Variant(it) => it.name(),
+ ast::Struct(it) => it.name(),
+ ast::Union(it) => it.name(),
+ _ => None,
+ }
+ },
+ ast::VariantList(vl) => ast::Enum::cast(vl.syntax().parent()?)?.name(),
+ _ => None,
+ }
+ }
+ } else if kind == T!['('] {
+ let tfl = ast::TupleFieldList::cast(token_parent)?;
+ match_ast! {
+ match (tfl.syntax().parent()?) {
+ ast::Variant(it) => it.name(),
+ ast::Struct(it) => it.name(),
+ _ => None,
+ }
+ }
+ } else {
+ None
+ }
+}
+
+fn is_enum_lit_name_ref(
+ sema: &Semantics<'_, RootDatabase>,
+ enum_: hir::Enum,
+ name_ref: &ast::NameRef,
+) -> bool {
+ let path_is_variant_of_enum = |path: ast::Path| {
+ matches!(
+ sema.resolve_path(&path),
+ Some(PathResolution::Def(hir::ModuleDef::Variant(variant)))
+ if variant.parent_enum(sema.db) == enum_
+ )
+ };
+ name_ref
+ .syntax()
+ .ancestors()
+ .find_map(|ancestor| {
+ match_ast! {
+ match ancestor {
+ ast::PathExpr(path_expr) => path_expr.path().map(path_is_variant_of_enum),
+ ast::RecordExpr(record_expr) => record_expr.path().map(path_is_variant_of_enum),
+ _ => None,
+ }
+ }
+ })
+ .unwrap_or(false)
+}
+
+fn path_ends_with(path: Option<ast::Path>, name_ref: &ast::NameRef) -> bool {
+ path.and_then(|path| path.segment())
+ .and_then(|segment| segment.name_ref())
+ .map_or(false, |segment| segment == *name_ref)
+}
+
+fn is_lit_name_ref(name_ref: &ast::NameRef) -> bool {
+ name_ref.syntax().ancestors().find_map(|ancestor| {
+ match_ast! {
+ match ancestor {
+ ast::PathExpr(path_expr) => Some(path_ends_with(path_expr.path(), name_ref)),
+ ast::RecordExpr(record_expr) => Some(path_ends_with(record_expr.path(), name_ref)),
+ _ => None,
+ }
+ }
+ }).unwrap_or(false)
+}
+
+#[cfg(test)]
+mod tests {
+ use expect_test::{expect, Expect};
+ use ide_db::{base_db::FileId, search::ReferenceCategory};
+ use stdx::format_to;
+
+ use crate::{fixture, SearchScope};
+
+ #[test]
+ fn test_struct_literal_after_space() {
+ check(
+ r#"
+struct Foo $0{
+ a: i32,
+}
+impl Foo {
+ fn f() -> i32 { 42 }
+}
+fn main() {
+ let f: Foo;
+ f = Foo {a: Foo::f()};
+}
+"#,
+ expect![[r#"
+ Foo Struct FileId(0) 0..26 7..10
+
+ FileId(0) 101..104
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_struct_literal_before_space() {
+ check(
+ r#"
+struct Foo$0 {}
+ fn main() {
+ let f: Foo;
+ f = Foo {};
+}
+"#,
+ expect![[r#"
+ Foo Struct FileId(0) 0..13 7..10
+
+ FileId(0) 41..44
+ FileId(0) 54..57
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_struct_literal_with_generic_type() {
+ check(
+ r#"
+struct Foo<T> $0{}
+ fn main() {
+ let f: Foo::<i32>;
+ f = Foo {};
+}
+"#,
+ expect![[r#"
+ Foo Struct FileId(0) 0..16 7..10
+
+ FileId(0) 64..67
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_struct_literal_for_tuple() {
+ check(
+ r#"
+struct Foo$0(i32);
+
+fn main() {
+ let f: Foo;
+ f = Foo(1);
+}
+"#,
+ expect![[r#"
+ Foo Struct FileId(0) 0..16 7..10
+
+ FileId(0) 54..57
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_struct_literal_for_union() {
+ check(
+ r#"
+union Foo $0{
+ x: u32
+}
+
+fn main() {
+ let f: Foo;
+ f = Foo { x: 1 };
+}
+"#,
+ expect![[r#"
+ Foo Union FileId(0) 0..24 6..9
+
+ FileId(0) 62..65
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_enum_after_space() {
+ check(
+ r#"
+enum Foo $0{
+ A,
+ B(),
+ C{},
+}
+fn main() {
+ let f: Foo;
+ f = Foo::A;
+ f = Foo::B();
+ f = Foo::C{};
+}
+"#,
+ expect![[r#"
+ Foo Enum FileId(0) 0..37 5..8
+
+ FileId(0) 74..77
+ FileId(0) 90..93
+ FileId(0) 108..111
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_variant_record_after_space() {
+ check(
+ r#"
+enum Foo {
+ A $0{ n: i32 },
+ B,
+}
+fn main() {
+ let f: Foo;
+ f = Foo::B;
+ f = Foo::A { n: 92 };
+}
+"#,
+ expect![[r#"
+ A Variant FileId(0) 15..27 15..16
+
+ FileId(0) 95..96
+ "#]],
+ );
+ }
+ #[test]
+ fn test_variant_tuple_before_paren() {
+ check(
+ r#"
+enum Foo {
+ A$0(i32),
+ B,
+}
+fn main() {
+ let f: Foo;
+ f = Foo::B;
+ f = Foo::A(92);
+}
+"#,
+ expect![[r#"
+ A Variant FileId(0) 15..21 15..16
+
+ FileId(0) 89..90
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_enum_before_space() {
+ check(
+ r#"
+enum Foo$0 {
+ A,
+ B,
+}
+fn main() {
+ let f: Foo;
+ f = Foo::A;
+}
+"#,
+ expect![[r#"
+ Foo Enum FileId(0) 0..26 5..8
+
+ FileId(0) 50..53
+ FileId(0) 63..66
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_enum_with_generic_type() {
+ check(
+ r#"
+enum Foo<T> $0{
+ A(T),
+ B,
+}
+fn main() {
+ let f: Foo<i8>;
+ f = Foo::A(1);
+}
+"#,
+ expect![[r#"
+ Foo Enum FileId(0) 0..32 5..8
+
+ FileId(0) 73..76
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_enum_for_tuple() {
+ check(
+ r#"
+enum Foo$0{
+ A(i8),
+ B(i8),
+}
+fn main() {
+ let f: Foo;
+ f = Foo::A(1);
+}
+"#,
+ expect![[r#"
+ Foo Enum FileId(0) 0..33 5..8
+
+ FileId(0) 70..73
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_all_refs_for_local() {
+ check(
+ r#"
+fn main() {
+ let mut i = 1;
+ let j = 1;
+ i = i$0 + j;
+
+ {
+ i = 0;
+ }
+
+ i = 5;
+}"#,
+ expect![[r#"
+ i Local FileId(0) 20..25 24..25 Write
+
+ FileId(0) 50..51 Write
+ FileId(0) 54..55 Read
+ FileId(0) 76..77 Write
+ FileId(0) 94..95 Write
+ "#]],
+ );
+ }
+
+ #[test]
+ fn search_filters_by_range() {
+ check(
+ r#"
+fn foo() {
+ let spam$0 = 92;
+ spam + spam
+}
+fn bar() {
+ let spam = 92;
+ spam + spam
+}
+"#,
+ expect![[r#"
+ spam Local FileId(0) 19..23 19..23
+
+ FileId(0) 34..38 Read
+ FileId(0) 41..45 Read
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_all_refs_for_param_inside() {
+ check(
+ r#"
+fn foo(i : u32) -> u32 { i$0 }
+"#,
+ expect![[r#"
+ i ValueParam FileId(0) 7..8 7..8
+
+ FileId(0) 25..26 Read
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_all_refs_for_fn_param() {
+ check(
+ r#"
+fn foo(i$0 : u32) -> u32 { i }
+"#,
+ expect![[r#"
+ i ValueParam FileId(0) 7..8 7..8
+
+ FileId(0) 25..26 Read
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_all_refs_field_name() {
+ check(
+ r#"
+//- /lib.rs
+struct Foo {
+ pub spam$0: u32,
+}
+
+fn main(s: Foo) {
+ let f = s.spam;
+}
+"#,
+ expect![[r#"
+ spam Field FileId(0) 17..30 21..25
+
+ FileId(0) 67..71 Read
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_all_refs_impl_item_name() {
+ check(
+ r#"
+struct Foo;
+impl Foo {
+ fn f$0(&self) { }
+}
+"#,
+ expect![[r#"
+ f Function FileId(0) 27..43 30..31
+
+ (no references)
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_all_refs_enum_var_name() {
+ check(
+ r#"
+enum Foo {
+ A,
+ B$0,
+ C,
+}
+"#,
+ expect![[r#"
+ B Variant FileId(0) 22..23 22..23
+
+ (no references)
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_all_refs_enum_var_field() {
+ check(
+ r#"
+enum Foo {
+ A,
+ B { field$0: u8 },
+ C,
+}
+"#,
+ expect![[r#"
+ field Field FileId(0) 26..35 26..31
+
+ (no references)
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_all_refs_two_modules() {
+ check(
+ r#"
+//- /lib.rs
+pub mod foo;
+pub mod bar;
+
+fn f() {
+ let i = foo::Foo { n: 5 };
+}
+
+//- /foo.rs
+use crate::bar;
+
+pub struct Foo {
+ pub n: u32,
+}
+
+fn f() {
+ let i = bar::Bar { n: 5 };
+}
+
+//- /bar.rs
+use crate::foo;
+
+pub struct Bar {
+ pub n: u32,
+}
+
+fn f() {
+ let i = foo::Foo$0 { n: 5 };
+}
+"#,
+ expect![[r#"
+ Foo Struct FileId(1) 17..51 28..31
+
+ FileId(0) 53..56
+ FileId(2) 79..82
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_all_refs_decl_module() {
+ check(
+ r#"
+//- /lib.rs
+mod foo$0;
+
+use foo::Foo;
+
+fn f() {
+ let i = Foo { n: 5 };
+}
+
+//- /foo.rs
+pub struct Foo {
+ pub n: u32,
+}
+"#,
+ expect![[r#"
+ foo Module FileId(0) 0..8 4..7
+
+ FileId(0) 14..17
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_all_refs_decl_module_on_self() {
+ check(
+ r#"
+//- /lib.rs
+mod foo;
+
+//- /foo.rs
+use self$0;
+"#,
+ expect![[r#"
+ foo Module FileId(0) 0..8 4..7
+
+ FileId(1) 4..8
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_all_refs_decl_module_on_self_crate_root() {
+ check(
+ r#"
+//- /lib.rs
+use self$0;
+"#,
+ expect![[r#"
+ Module FileId(0) 0..10
+
+ FileId(0) 4..8
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_all_refs_super_mod_vis() {
+ check(
+ r#"
+//- /lib.rs
+mod foo;
+
+//- /foo.rs
+mod some;
+use some::Foo;
+
+fn f() {
+ let i = Foo { n: 5 };
+}
+
+//- /foo/some.rs
+pub(super) struct Foo$0 {
+ pub n: u32,
+}
+"#,
+ expect![[r#"
+ Foo Struct FileId(2) 0..41 18..21
+
+ FileId(1) 20..23
+ FileId(1) 47..50
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_all_refs_with_scope() {
+ let code = r#"
+ //- /lib.rs
+ mod foo;
+ mod bar;
+
+ pub fn quux$0() {}
+
+ //- /foo.rs
+ fn f() { super::quux(); }
+
+ //- /bar.rs
+ fn f() { super::quux(); }
+ "#;
+
+ check_with_scope(
+ code,
+ None,
+ expect![[r#"
+ quux Function FileId(0) 19..35 26..30
+
+ FileId(1) 16..20
+ FileId(2) 16..20
+ "#]],
+ );
+
+ check_with_scope(
+ code,
+ Some(SearchScope::single_file(FileId(2))),
+ expect![[r#"
+ quux Function FileId(0) 19..35 26..30
+
+ FileId(2) 16..20
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_all_refs_macro_def() {
+ check(
+ r#"
+#[macro_export]
+macro_rules! m1$0 { () => (()) }
+
+fn foo() {
+ m1();
+ m1();
+}
+"#,
+ expect![[r#"
+ m1 Macro FileId(0) 0..46 29..31
+
+ FileId(0) 63..65
+ FileId(0) 73..75
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_basic_highlight_read_write() {
+ check(
+ r#"
+fn foo() {
+ let mut i$0 = 0;
+ i = i + 1;
+}
+"#,
+ expect![[r#"
+ i Local FileId(0) 19..24 23..24 Write
+
+ FileId(0) 34..35 Write
+ FileId(0) 38..39 Read
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_basic_highlight_field_read_write() {
+ check(
+ r#"
+struct S {
+ f: u32,
+}
+
+fn foo() {
+ let mut s = S{f: 0};
+ s.f$0 = 0;
+}
+"#,
+ expect![[r#"
+ f Field FileId(0) 15..21 15..16
+
+ FileId(0) 55..56 Read
+ FileId(0) 68..69 Write
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_basic_highlight_decl_no_write() {
+ check(
+ r#"
+fn foo() {
+ let i$0;
+ i = 1;
+}
+"#,
+ expect![[r#"
+ i Local FileId(0) 19..20 19..20
+
+ FileId(0) 26..27 Write
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_struct_function_refs_outside_module() {
+ check(
+ r#"
+mod foo {
+ pub struct Foo;
+
+ impl Foo {
+ pub fn new$0() -> Foo { Foo }
+ }
+}
+
+fn main() {
+ let _f = foo::Foo::new();
+}
+"#,
+ expect![[r#"
+ new Function FileId(0) 54..81 61..64
+
+ FileId(0) 126..129
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_all_refs_nested_module() {
+ check(
+ r#"
+//- /lib.rs
+mod foo { mod bar; }
+
+fn f$0() {}
+
+//- /foo/bar.rs
+use crate::f;
+
+fn g() { f(); }
+"#,
+ expect![[r#"
+ f Function FileId(0) 22..31 25..26
+
+ FileId(1) 11..12
+ FileId(1) 24..25
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_all_refs_struct_pat() {
+ check(
+ r#"
+struct S {
+ field$0: u8,
+}
+
+fn f(s: S) {
+ match s {
+ S { field } => {}
+ }
+}
+"#,
+ expect![[r#"
+ field Field FileId(0) 15..24 15..20
+
+ FileId(0) 68..73 Read
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_all_refs_enum_var_pat() {
+ check(
+ r#"
+enum En {
+ Variant {
+ field$0: u8,
+ }
+}
+
+fn f(e: En) {
+ match e {
+ En::Variant { field } => {}
+ }
+}
+"#,
+ expect![[r#"
+ field Field FileId(0) 32..41 32..37
+
+ FileId(0) 102..107 Read
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_all_refs_enum_var_privacy() {
+ check(
+ r#"
+mod m {
+ pub enum En {
+ Variant {
+ field$0: u8,
+ }
+ }
+}
+
+fn f() -> m::En {
+ m::En::Variant { field: 0 }
+}
+"#,
+ expect![[r#"
+ field Field FileId(0) 56..65 56..61
+
+ FileId(0) 125..130 Read
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_self_refs() {
+ check(
+ r#"
+struct Foo { bar: i32 }
+
+impl Foo {
+ fn foo(self) {
+ let x = self$0.bar;
+ if true {
+ let _ = match () {
+ () => self,
+ };
+ }
+ }
+}
+"#,
+ expect![[r#"
+ self SelfParam FileId(0) 47..51 47..51
+
+ FileId(0) 71..75 Read
+ FileId(0) 152..156 Read
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_self_refs_decl() {
+ check(
+ r#"
+struct Foo { bar: i32 }
+
+impl Foo {
+ fn foo(self$0) {
+ self;
+ }
+}
+"#,
+ expect![[r#"
+ self SelfParam FileId(0) 47..51 47..51
+
+ FileId(0) 63..67 Read
+ "#]],
+ );
+ }
+
+ fn check(ra_fixture: &str, expect: Expect) {
+ check_with_scope(ra_fixture, None, expect)
+ }
+
+ fn check_with_scope(ra_fixture: &str, search_scope: Option<SearchScope>, expect: Expect) {
+ let (analysis, pos) = fixture::position(ra_fixture);
+ let refs = analysis.find_all_refs(pos, search_scope).unwrap().unwrap();
+
+ let mut actual = String::new();
+ for refs in refs {
+ actual += "\n\n";
+
+ if let Some(decl) = refs.declaration {
+ format_to!(actual, "{}", decl.nav.debug_render());
+ if decl.is_mut {
+ format_to!(actual, " {:?}", ReferenceCategory::Write)
+ }
+ actual += "\n\n";
+ }
+
+ for (file_id, references) in &refs.references {
+ for (range, access) in references {
+ format_to!(actual, "{:?} {:?}", file_id, range);
+ if let Some(access) = access {
+ format_to!(actual, " {:?}", access);
+ }
+ actual += "\n";
+ }
+ }
+
+ if refs.references.is_empty() {
+ actual += "(no references)\n";
+ }
+ }
+ expect.assert_eq(actual.trim_start())
+ }
+
+ #[test]
+ fn test_find_lifetimes_function() {
+ check(
+ r#"
+trait Foo<'a> {}
+impl<'a> Foo<'a> for &'a () {}
+fn foo<'a, 'b: 'a>(x: &'a$0 ()) -> &'a () where &'a (): Foo<'a> {
+ fn bar<'a>(_: &'a ()) {}
+ x
+}
+"#,
+ expect![[r#"
+ 'a LifetimeParam FileId(0) 55..57 55..57
+
+ FileId(0) 63..65
+ FileId(0) 71..73
+ FileId(0) 82..84
+ FileId(0) 95..97
+ FileId(0) 106..108
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_lifetimes_type_alias() {
+ check(
+ r#"
+type Foo<'a, T> where T: 'a$0 = &'a T;
+"#,
+ expect![[r#"
+ 'a LifetimeParam FileId(0) 9..11 9..11
+
+ FileId(0) 25..27
+ FileId(0) 31..33
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_lifetimes_trait_impl() {
+ check(
+ r#"
+trait Foo<'a> {
+ fn foo() -> &'a ();
+}
+impl<'a> Foo<'a> for &'a () {
+ fn foo() -> &'a$0 () {
+ unimplemented!()
+ }
+}
+"#,
+ expect![[r#"
+ 'a LifetimeParam FileId(0) 47..49 47..49
+
+ FileId(0) 55..57
+ FileId(0) 64..66
+ FileId(0) 89..91
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_map_range_to_original() {
+ check(
+ r#"
+macro_rules! foo {($i:ident) => {$i} }
+fn main() {
+ let a$0 = "test";
+ foo!(a);
+}
+"#,
+ expect![[r#"
+ a Local FileId(0) 59..60 59..60
+
+ FileId(0) 80..81 Read
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_map_range_to_original_ref() {
+ check(
+ r#"
+macro_rules! foo {($i:ident) => {$i} }
+fn main() {
+ let a = "test";
+ foo!(a$0);
+}
+"#,
+ expect![[r#"
+ a Local FileId(0) 59..60 59..60
+
+ FileId(0) 80..81 Read
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_labels() {
+ check(
+ r#"
+fn foo<'a>() -> &'a () {
+ 'a: loop {
+ 'b: loop {
+ continue 'a$0;
+ }
+ break 'a;
+ }
+}
+"#,
+ expect![[r#"
+ 'a Label FileId(0) 29..32 29..31
+
+ FileId(0) 80..82
+ FileId(0) 108..110
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_find_const_param() {
+ check(
+ r#"
+fn foo<const FOO$0: usize>() -> usize {
+ FOO
+}
+"#,
+ expect![[r#"
+ FOO ConstParam FileId(0) 7..23 13..16
+
+ FileId(0) 42..45
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_trait() {
+ check(
+ r#"
+trait Foo$0 where Self: {}
+
+impl Foo for () {}
+"#,
+ expect![[r#"
+ Foo Trait FileId(0) 0..24 6..9
+
+ FileId(0) 31..34
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_trait_self() {
+ check(
+ r#"
+trait Foo where Self$0 {
+ fn f() -> Self;
+}
+
+impl Foo for () {}
+"#,
+ expect![[r#"
+ Self TypeParam FileId(0) 6..9 6..9
+
+ FileId(0) 16..20
+ FileId(0) 37..41
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_self_ty() {
+ check(
+ r#"
+ struct $0Foo;
+
+ impl Foo where Self: {
+ fn f() -> Self;
+ }
+ "#,
+ expect![[r#"
+ Foo Struct FileId(0) 0..11 7..10
+
+ FileId(0) 18..21
+ FileId(0) 28..32
+ FileId(0) 50..54
+ "#]],
+ );
+ check(
+ r#"
+struct Foo;
+
+impl Foo where Self: {
+ fn f() -> Self$0;
+}
+"#,
+ expect![[r#"
+ impl Impl FileId(0) 13..57 18..21
+
+ FileId(0) 18..21
+ FileId(0) 28..32
+ FileId(0) 50..54
+ "#]],
+ );
+ }
+ #[test]
+ fn test_self_variant_with_payload() {
+ check(
+ r#"
+enum Foo { Bar() }
+
+impl Foo {
+ fn foo(self) {
+ match self {
+ Self::Bar$0() => (),
+ }
+ }
+}
+
+"#,
+ expect![[r#"
+ Bar Variant FileId(0) 11..16 11..14
+
+ FileId(0) 89..92
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_attr_differs_from_fn_with_same_name() {
+ check(
+ r#"
+#[test]
+fn test$0() {
+ test();
+}
+"#,
+ expect![[r#"
+ test Function FileId(0) 0..33 11..15
+
+ FileId(0) 24..28
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_const_in_pattern() {
+ check(
+ r#"
+const A$0: i32 = 42;
+
+fn main() {
+ match A {
+ A => (),
+ _ => (),
+ }
+ if let A = A {}
+}
+"#,
+ expect![[r#"
+ A Const FileId(0) 0..18 6..7
+
+ FileId(0) 42..43
+ FileId(0) 54..55
+ FileId(0) 97..98
+ FileId(0) 101..102
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_primitives() {
+ check(
+ r#"
+fn foo(_: bool) -> bo$0ol { true }
+"#,
+ expect![[r#"
+ FileId(0) 10..14
+ FileId(0) 19..23
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_transitive() {
+ check(
+ r#"
+//- /level3.rs new_source_root:local crate:level3
+pub struct Fo$0o;
+//- /level2.rs new_source_root:local crate:level2 deps:level3
+pub use level3::Foo;
+//- /level1.rs new_source_root:local crate:level1 deps:level2
+pub use level2::Foo;
+//- /level0.rs new_source_root:local crate:level0 deps:level1
+pub use level1::Foo;
+"#,
+ expect![[r#"
+ Foo Struct FileId(0) 0..15 11..14
+
+ FileId(1) 16..19
+ FileId(2) 16..19
+ FileId(3) 16..19
+ "#]],
+ );
+ }
+
+ #[test]
+ fn test_decl_macro_references() {
+ check(
+ r#"
+//- /lib.rs crate:lib
+#[macro_use]
+mod qux;
+mod bar;
+
+pub use self::foo;
+//- /qux.rs
+#[macro_export]
+macro_rules! foo$0 {
+ () => {struct Foo;};
+}
+//- /bar.rs
+foo!();
+//- /other.rs crate:other deps:lib new_source_root:local
+lib::foo!();
+"#,
+ expect![[r#"
+ foo Macro FileId(1) 0..61 29..32
+
+ FileId(0) 46..49
+ FileId(2) 0..3
+ FileId(3) 5..8
+ "#]],
+ );
+ }
+
+ #[test]
+ fn macro_doesnt_reference_attribute_on_call() {
+ check(
+ r#"
+macro_rules! m {
+ () => {};
+}
+
+#[proc_macro_test::attr_noop]
+m$0!();
+
+"#,
+ expect![[r#"
+ m Macro FileId(0) 0..32 13..14
+
+ FileId(0) 64..65
+ "#]],
+ );
+ }
+
+ #[test]
+ fn multi_def() {
+ check(
+ r#"
+macro_rules! m {
+ ($name:ident) => {
+ mod module {
+ pub fn $name() {}
+ }
+
+ pub fn $name() {}
+ }
+}
+
+m!(func$0);
+
+fn f() {
+ func();
+ module::func();
+}
+ "#,
+ expect![[r#"
+ func Function FileId(0) 137..146 140..144
+
+ FileId(0) 161..165
+
+
+ func Function FileId(0) 137..146 140..144
+
+ FileId(0) 181..185
+ "#]],
+ )
+ }
+
+ #[test]
+ fn attr_expanded() {
+ check(
+ r#"
+//- proc_macros: identity
+#[proc_macros::identity]
+fn func$0() {
+ func();
+}
+"#,
+ expect![[r#"
+ func Function FileId(0) 25..50 28..32
+
+ FileId(0) 41..45
+ "#]],
+ )
+ }
+
+ #[test]
+ fn attr_assoc_item() {
+ check(
+ r#"
+//- proc_macros: identity
+
+trait Trait {
+ #[proc_macros::identity]
+ fn func() {
+ Self::func$0();
+ }
+}
+"#,
+ expect![[r#"
+ func Function FileId(0) 48..87 51..55
+
+ FileId(0) 74..78
+ "#]],
+ )
+ }
+
+ // FIXME: import is classified as function
+ #[test]
+ fn attr() {
+ check(
+ r#"
+//- proc_macros: identity
+use proc_macros::identity;
+
+#[proc_macros::$0identity]
+fn func() {}
+"#,
+ expect![[r#"
+ identity Attribute FileId(1) 1..107 32..40
+
+ FileId(0) 43..51
+ "#]],
+ );
+ check(
+ r#"
+#![crate_type="proc-macro"]
+#[proc_macro_attribute]
+fn func$0() {}
+"#,
+ expect![[r#"
+ func Attribute FileId(0) 28..64 55..59
+
+ (no references)
+ "#]],
+ );
+ }
+
+ // FIXME: import is classified as function
+ #[test]
+ fn proc_macro() {
+ check(
+ r#"
+//- proc_macros: mirror
+use proc_macros::mirror;
+
+mirror$0! {}
+"#,
+ expect![[r#"
+ mirror Macro FileId(1) 1..77 22..28
+
+ FileId(0) 26..32
+ "#]],
+ )
+ }
+
+ #[test]
+ fn derive() {
+ check(
+ r#"
+//- proc_macros: derive_identity
+//- minicore: derive
+use proc_macros::DeriveIdentity;
+
+#[derive(proc_macros::DeriveIdentity$0)]
+struct Foo;
+"#,
+ expect![[r#"
+ derive_identity Derive FileId(2) 1..107 45..60
+
+ FileId(0) 17..31
+ FileId(0) 56..70
+ "#]],
+ );
+ check(
+ r#"
+#![crate_type="proc-macro"]
+#[proc_macro_derive(Derive, attributes(x))]
+pub fn deri$0ve(_stream: TokenStream) -> TokenStream {}
+"#,
+ expect![[r#"
+ derive Derive FileId(0) 28..125 79..85
+
+ (no references)
+ "#]],
+ );
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-27 19:03:02 +0000