e90931a204
Return an error with a meaningful message for requests to `textDocument/rename` if the operation cannot be performed. Pass errors raised by rename handling code to the LSP runtime. As a consequence, the VS Code client shows and logs the request as if a server-side programming error occured. Resolves https://github.com/rust-analyzer/rust-analyzer/issues/3981
788 lines
17 KiB
Rust
788 lines
17 KiB
Rust
//! 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 a `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 futher 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.
|
|
|
|
mod rename;
|
|
|
|
use hir::Semantics;
|
|
use ide_db::{
|
|
defs::{classify_name, classify_name_ref, Definition},
|
|
search::SearchScope,
|
|
RootDatabase,
|
|
};
|
|
use syntax::{
|
|
algo::find_node_at_offset,
|
|
ast::{self, NameOwner},
|
|
AstNode, SyntaxKind, SyntaxNode, TextRange, TokenAtOffset,
|
|
};
|
|
|
|
use crate::{display::TryToNav, FilePosition, FileRange, NavigationTarget, RangeInfo};
|
|
|
|
pub(crate) use self::rename::rename;
|
|
pub use self::rename::RenameError;
|
|
|
|
pub use ide_db::search::{Reference, ReferenceAccess, ReferenceKind};
|
|
|
|
#[derive(Debug, Clone)]
|
|
pub struct ReferenceSearchResult {
|
|
declaration: Declaration,
|
|
references: Vec<Reference>,
|
|
}
|
|
|
|
#[derive(Debug, Clone)]
|
|
pub struct Declaration {
|
|
pub nav: NavigationTarget,
|
|
pub kind: ReferenceKind,
|
|
pub access: Option<ReferenceAccess>,
|
|
}
|
|
|
|
impl ReferenceSearchResult {
|
|
pub fn declaration(&self) -> &Declaration {
|
|
&self.declaration
|
|
}
|
|
|
|
pub fn decl_target(&self) -> &NavigationTarget {
|
|
&self.declaration.nav
|
|
}
|
|
|
|
pub fn references(&self) -> &[Reference] {
|
|
&self.references
|
|
}
|
|
|
|
/// Total number of references
|
|
/// At least 1 since all valid references should
|
|
/// Have a declaration
|
|
pub fn len(&self) -> usize {
|
|
self.references.len() + 1
|
|
}
|
|
}
|
|
|
|
// allow turning ReferenceSearchResult into an iterator
|
|
// over References
|
|
impl IntoIterator for ReferenceSearchResult {
|
|
type Item = Reference;
|
|
type IntoIter = std::vec::IntoIter<Reference>;
|
|
|
|
fn into_iter(mut self) -> Self::IntoIter {
|
|
let mut v = Vec::with_capacity(self.len());
|
|
v.push(Reference {
|
|
file_range: FileRange {
|
|
file_id: self.declaration.nav.file_id,
|
|
range: self.declaration.nav.focus_or_full_range(),
|
|
},
|
|
kind: self.declaration.kind,
|
|
access: self.declaration.access,
|
|
});
|
|
v.append(&mut self.references);
|
|
v.into_iter()
|
|
}
|
|
}
|
|
|
|
pub(crate) fn find_all_refs(
|
|
sema: &Semantics<RootDatabase>,
|
|
position: FilePosition,
|
|
search_scope: Option<SearchScope>,
|
|
) -> Option<RangeInfo<ReferenceSearchResult>> {
|
|
let _p = profile::span("find_all_refs");
|
|
let syntax = sema.parse(position.file_id).syntax().clone();
|
|
|
|
let (opt_name, search_kind) = if let Some(name) =
|
|
get_struct_def_name_for_struct_literal_search(&sema, &syntax, position)
|
|
{
|
|
(Some(name), ReferenceKind::StructLiteral)
|
|
} else {
|
|
(
|
|
sema.find_node_at_offset_with_descend::<ast::Name>(&syntax, position.offset),
|
|
ReferenceKind::Other,
|
|
)
|
|
};
|
|
|
|
let RangeInfo { range, info: def } = find_name(&sema, &syntax, position, opt_name)?;
|
|
|
|
let references = def
|
|
.usages(sema)
|
|
.set_scope(search_scope)
|
|
.all()
|
|
.into_iter()
|
|
.filter(|r| search_kind == ReferenceKind::Other || search_kind == r.kind)
|
|
.collect();
|
|
|
|
let decl_range = def.try_to_nav(sema.db)?.focus_or_full_range();
|
|
|
|
let declaration = Declaration {
|
|
nav: def.try_to_nav(sema.db)?,
|
|
kind: ReferenceKind::Other,
|
|
access: decl_access(&def, &syntax, decl_range),
|
|
};
|
|
|
|
Some(RangeInfo::new(range, ReferenceSearchResult { declaration, references }))
|
|
}
|
|
|
|
fn find_name(
|
|
sema: &Semantics<RootDatabase>,
|
|
syntax: &SyntaxNode,
|
|
position: FilePosition,
|
|
opt_name: Option<ast::Name>,
|
|
) -> Option<RangeInfo<Definition>> {
|
|
if let Some(name) = opt_name {
|
|
let def = classify_name(sema, &name)?.definition(sema.db);
|
|
let range = name.syntax().text_range();
|
|
return Some(RangeInfo::new(range, def));
|
|
}
|
|
let name_ref =
|
|
sema.find_node_at_offset_with_descend::<ast::NameRef>(&syntax, position.offset)?;
|
|
let def = classify_name_ref(sema, &name_ref)?.definition(sema.db);
|
|
let range = name_ref.syntax().text_range();
|
|
Some(RangeInfo::new(range, def))
|
|
}
|
|
|
|
fn decl_access(def: &Definition, syntax: &SyntaxNode, range: TextRange) -> Option<ReferenceAccess> {
|
|
match def {
|
|
Definition::Local(_) | Definition::Field(_) => {}
|
|
_ => return None,
|
|
};
|
|
|
|
let stmt = find_node_at_offset::<ast::LetStmt>(syntax, range.start())?;
|
|
if stmt.initializer().is_some() {
|
|
let pat = stmt.pat()?;
|
|
if let ast::Pat::IdentPat(it) = pat {
|
|
if it.mut_token().is_some() {
|
|
return Some(ReferenceAccess::Write);
|
|
}
|
|
}
|
|
}
|
|
|
|
None
|
|
}
|
|
|
|
fn get_struct_def_name_for_struct_literal_search(
|
|
sema: &Semantics<RootDatabase>,
|
|
syntax: &SyntaxNode,
|
|
position: FilePosition,
|
|
) -> Option<ast::Name> {
|
|
if let TokenAtOffset::Between(ref left, ref right) = syntax.token_at_offset(position.offset) {
|
|
if right.kind() != SyntaxKind::L_CURLY && right.kind() != SyntaxKind::L_PAREN {
|
|
return None;
|
|
}
|
|
if let Some(name) =
|
|
sema.find_node_at_offset_with_descend::<ast::Name>(&syntax, left.text_range().start())
|
|
{
|
|
return name.syntax().ancestors().find_map(ast::Struct::cast).and_then(|l| l.name());
|
|
}
|
|
if sema
|
|
.find_node_at_offset_with_descend::<ast::GenericParamList>(
|
|
&syntax,
|
|
left.text_range().start(),
|
|
)
|
|
.is_some()
|
|
{
|
|
return left.ancestors().find_map(ast::Struct::cast).and_then(|l| l.name());
|
|
}
|
|
}
|
|
None
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use base_db::FileId;
|
|
use expect_test::{expect, Expect};
|
|
use stdx::format_to;
|
|
|
|
use crate::{fixture, SearchScope};
|
|
|
|
#[test]
|
|
fn test_struct_literal_after_space() {
|
|
check(
|
|
r#"
|
|
struct Foo <|>{
|
|
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 Other
|
|
|
|
FileId(0) 101..104 StructLiteral
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_struct_literal_before_space() {
|
|
check(
|
|
r#"
|
|
struct Foo<|> {}
|
|
fn main() {
|
|
let f: Foo;
|
|
f = Foo {};
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
Foo STRUCT FileId(0) 0..13 7..10 Other
|
|
|
|
FileId(0) 41..44 Other
|
|
FileId(0) 54..57 StructLiteral
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_struct_literal_with_generic_type() {
|
|
check(
|
|
r#"
|
|
struct Foo<T> <|>{}
|
|
fn main() {
|
|
let f: Foo::<i32>;
|
|
f = Foo {};
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
Foo STRUCT FileId(0) 0..16 7..10 Other
|
|
|
|
FileId(0) 64..67 StructLiteral
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_struct_literal_for_tuple() {
|
|
check(
|
|
r#"
|
|
struct Foo<|>(i32);
|
|
|
|
fn main() {
|
|
let f: Foo;
|
|
f = Foo(1);
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
Foo STRUCT FileId(0) 0..16 7..10 Other
|
|
|
|
FileId(0) 54..57 StructLiteral
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_find_all_refs_for_local() {
|
|
check(
|
|
r#"
|
|
fn main() {
|
|
let mut i = 1;
|
|
let j = 1;
|
|
i = i<|> + j;
|
|
|
|
{
|
|
i = 0;
|
|
}
|
|
|
|
i = 5;
|
|
}"#,
|
|
expect![[r#"
|
|
i IDENT_PAT FileId(0) 24..25 Other Write
|
|
|
|
FileId(0) 50..51 Other Write
|
|
FileId(0) 54..55 Other Read
|
|
FileId(0) 76..77 Other Write
|
|
FileId(0) 94..95 Other Write
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn search_filters_by_range() {
|
|
check(
|
|
r#"
|
|
fn foo() {
|
|
let spam<|> = 92;
|
|
spam + spam
|
|
}
|
|
fn bar() {
|
|
let spam = 92;
|
|
spam + spam
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
spam IDENT_PAT FileId(0) 19..23 Other
|
|
|
|
FileId(0) 34..38 Other Read
|
|
FileId(0) 41..45 Other Read
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_find_all_refs_for_param_inside() {
|
|
check(
|
|
r#"
|
|
fn foo(i : u32) -> u32 { i<|> }
|
|
"#,
|
|
expect![[r#"
|
|
i IDENT_PAT FileId(0) 7..8 Other
|
|
|
|
FileId(0) 25..26 Other Read
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_find_all_refs_for_fn_param() {
|
|
check(
|
|
r#"
|
|
fn foo(i<|> : u32) -> u32 { i }
|
|
"#,
|
|
expect![[r#"
|
|
i IDENT_PAT FileId(0) 7..8 Other
|
|
|
|
FileId(0) 25..26 Other Read
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_find_all_refs_field_name() {
|
|
check(
|
|
r#"
|
|
//- /lib.rs
|
|
struct Foo {
|
|
pub spam<|>: u32,
|
|
}
|
|
|
|
fn main(s: Foo) {
|
|
let f = s.spam;
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
spam RECORD_FIELD FileId(0) 17..30 21..25 Other
|
|
|
|
FileId(0) 67..71 Other Read
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_find_all_refs_impl_item_name() {
|
|
check(
|
|
r#"
|
|
struct Foo;
|
|
impl Foo {
|
|
fn f<|>(&self) { }
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
f FN FileId(0) 27..43 30..31 Other
|
|
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_find_all_refs_enum_var_name() {
|
|
check(
|
|
r#"
|
|
enum Foo {
|
|
A,
|
|
B<|>,
|
|
C,
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
B VARIANT FileId(0) 22..23 22..23 Other
|
|
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_find_all_refs_enum_var_field() {
|
|
check(
|
|
r#"
|
|
enum Foo {
|
|
A,
|
|
B { field<|>: u8 },
|
|
C,
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
field RECORD_FIELD FileId(0) 26..35 26..31 Other
|
|
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[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<|> { n: 5 };
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
Foo STRUCT FileId(1) 17..51 28..31 Other
|
|
|
|
FileId(0) 53..56 StructLiteral
|
|
FileId(2) 79..82 StructLiteral
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
// `mod foo;` is not in the results because `foo` is an `ast::Name`.
|
|
// So, there are two references: the first one is a definition of the `foo` module,
|
|
// which is the whole `foo.rs`, and the second one is in `use foo::Foo`.
|
|
#[test]
|
|
fn test_find_all_refs_decl_module() {
|
|
check(
|
|
r#"
|
|
//- /lib.rs
|
|
mod foo<|>;
|
|
|
|
use foo::Foo;
|
|
|
|
fn f() {
|
|
let i = Foo { n: 5 };
|
|
}
|
|
|
|
//- /foo.rs
|
|
pub struct Foo {
|
|
pub n: u32,
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
foo SOURCE_FILE FileId(1) 0..35 Other
|
|
|
|
FileId(0) 14..17 Other
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[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<|> {
|
|
pub n: u32,
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
Foo STRUCT FileId(2) 0..41 18..21 Other
|
|
|
|
FileId(1) 20..23 Other
|
|
FileId(1) 47..50 StructLiteral
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_find_all_refs_with_scope() {
|
|
let code = r#"
|
|
//- /lib.rs
|
|
mod foo;
|
|
mod bar;
|
|
|
|
pub fn quux<|>() {}
|
|
|
|
//- /foo.rs
|
|
fn f() { super::quux(); }
|
|
|
|
//- /bar.rs
|
|
fn f() { super::quux(); }
|
|
"#;
|
|
|
|
check_with_scope(
|
|
code,
|
|
None,
|
|
expect![[r#"
|
|
quux FN FileId(0) 19..35 26..30 Other
|
|
|
|
FileId(1) 16..20 StructLiteral
|
|
FileId(2) 16..20 StructLiteral
|
|
"#]],
|
|
);
|
|
|
|
check_with_scope(
|
|
code,
|
|
Some(SearchScope::single_file(FileId(2))),
|
|
expect![[r#"
|
|
quux FN FileId(0) 19..35 26..30 Other
|
|
|
|
FileId(2) 16..20 StructLiteral
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_find_all_refs_macro_def() {
|
|
check(
|
|
r#"
|
|
#[macro_export]
|
|
macro_rules! m1<|> { () => (()) }
|
|
|
|
fn foo() {
|
|
m1();
|
|
m1();
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
m1 MACRO_CALL FileId(0) 0..46 29..31 Other
|
|
|
|
FileId(0) 63..65 StructLiteral
|
|
FileId(0) 73..75 StructLiteral
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_basic_highlight_read_write() {
|
|
check(
|
|
r#"
|
|
fn foo() {
|
|
let mut i<|> = 0;
|
|
i = i + 1;
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
i IDENT_PAT FileId(0) 23..24 Other Write
|
|
|
|
FileId(0) 34..35 Other Write
|
|
FileId(0) 38..39 Other 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;
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
f RECORD_FIELD FileId(0) 15..21 15..16 Other
|
|
|
|
FileId(0) 55..56 Other Read
|
|
FileId(0) 68..69 Other Write
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_basic_highlight_decl_no_write() {
|
|
check(
|
|
r#"
|
|
fn foo() {
|
|
let i<|>;
|
|
i = 1;
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
i IDENT_PAT FileId(0) 19..20 Other
|
|
|
|
FileId(0) 26..27 Other Write
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_find_struct_function_refs_outside_module() {
|
|
check(
|
|
r#"
|
|
mod foo {
|
|
pub struct Foo;
|
|
|
|
impl Foo {
|
|
pub fn new<|>() -> Foo { Foo }
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
let _f = foo::Foo::new();
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
new FN FileId(0) 54..81 61..64 Other
|
|
|
|
FileId(0) 126..129 StructLiteral
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_find_all_refs_nested_module() {
|
|
check(
|
|
r#"
|
|
//- /lib.rs
|
|
mod foo { mod bar; }
|
|
|
|
fn f<|>() {}
|
|
|
|
//- /foo/bar.rs
|
|
use crate::f;
|
|
|
|
fn g() { f(); }
|
|
"#,
|
|
expect![[r#"
|
|
f FN FileId(0) 22..31 25..26 Other
|
|
|
|
FileId(1) 11..12 Other
|
|
FileId(1) 24..25 StructLiteral
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_find_all_refs_struct_pat() {
|
|
check(
|
|
r#"
|
|
struct S {
|
|
field<|>: u8,
|
|
}
|
|
|
|
fn f(s: S) {
|
|
match s {
|
|
S { field } => {}
|
|
}
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
field RECORD_FIELD FileId(0) 15..24 15..20 Other
|
|
|
|
FileId(0) 68..73 FieldShorthandForField Read
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_find_all_refs_enum_var_pat() {
|
|
check(
|
|
r#"
|
|
enum En {
|
|
Variant {
|
|
field<|>: u8,
|
|
}
|
|
}
|
|
|
|
fn f(e: En) {
|
|
match e {
|
|
En::Variant { field } => {}
|
|
}
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
field RECORD_FIELD FileId(0) 32..41 32..37 Other
|
|
|
|
FileId(0) 102..107 FieldShorthandForField Read
|
|
"#]],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_find_all_refs_enum_var_privacy() {
|
|
check(
|
|
r#"
|
|
mod m {
|
|
pub enum En {
|
|
Variant {
|
|
field<|>: u8,
|
|
}
|
|
}
|
|
}
|
|
|
|
fn f() -> m::En {
|
|
m::En::Variant { field: 0 }
|
|
}
|
|
"#,
|
|
expect![[r#"
|
|
field RECORD_FIELD FileId(0) 56..65 56..61 Other
|
|
|
|
FileId(0) 125..130 Other 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();
|
|
{
|
|
let decl = refs.declaration;
|
|
format_to!(actual, "{} {:?}", decl.nav.debug_render(), decl.kind);
|
|
if let Some(access) = decl.access {
|
|
format_to!(actual, " {:?}", access)
|
|
}
|
|
actual += "\n\n";
|
|
}
|
|
|
|
for r in &refs.references {
|
|
format_to!(actual, "{:?} {:?} {:?}", r.file_range.file_id, r.file_range.range, r.kind);
|
|
if let Some(access) = r.access {
|
|
format_to!(actual, " {:?}", access);
|
|
}
|
|
actual += "\n";
|
|
}
|
|
expect.assert_eq(&actual)
|
|
}
|
|
}
|