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annotations.rs
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annotations.rs
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use hir::{HasSource, InFile, InRealFile, Semantics};
use ide_db::{
base_db::{FileId, FilePosition, FileRange},
defs::Definition,
helpers::visit_file_defs,
FxHashSet, RootDatabase,
};
use itertools::Itertools;
use syntax::{ast::HasName, AstNode, TextRange};
use crate::{
annotations::fn_references::find_all_methods,
goto_implementation::goto_implementation,
references::find_all_refs,
runnables::{runnables, Runnable},
NavigationTarget, RunnableKind,
};
mod fn_references;
// Feature: Annotations
//
// Provides user with annotations above items for looking up references or impl blocks
// and running/debugging binaries.
//
// image::https://user-images.githubusercontent.com/48062697/113020672-b7c34f00-917a-11eb-8f6e-858735660a0e.png[]
#[derive(Debug, Hash, PartialEq, Eq)]
pub struct Annotation {
pub range: TextRange,
pub kind: AnnotationKind,
}
#[derive(Debug, Hash, PartialEq, Eq)]
pub enum AnnotationKind {
Runnable(Runnable),
HasImpls { pos: FilePosition, data: Option<Vec<NavigationTarget>> },
HasReferences { pos: FilePosition, data: Option<Vec<FileRange>> },
}
pub struct AnnotationConfig {
pub binary_target: bool,
pub annotate_runnables: bool,
pub annotate_impls: bool,
pub annotate_references: bool,
pub annotate_method_references: bool,
pub annotate_enum_variant_references: bool,
pub location: AnnotationLocation,
}
pub enum AnnotationLocation {
AboveName,
AboveWholeItem,
}
pub(crate) fn annotations(
db: &RootDatabase,
config: &AnnotationConfig,
file_id: FileId,
) -> Vec<Annotation> {
let mut annotations = FxHashSet::default();
if config.annotate_runnables {
for runnable in runnables(db, file_id) {
if should_skip_runnable(&runnable.kind, config.binary_target) {
continue;
}
let range = runnable.nav.focus_or_full_range();
annotations.insert(Annotation { range, kind: AnnotationKind::Runnable(runnable) });
}
}
let mk_ranges = |(range, focus): (_, Option<_>)| {
let cmd_target: TextRange = focus.unwrap_or(range);
let annotation_range = match config.location {
AnnotationLocation::AboveName => cmd_target,
AnnotationLocation::AboveWholeItem => range,
};
let target_pos = FilePosition { file_id, offset: cmd_target.start() };
(annotation_range, target_pos)
};
visit_file_defs(&Semantics::new(db), file_id, &mut |def| {
let range = match def {
Definition::Const(konst) if config.annotate_references => {
konst.source(db).and_then(|node| name_range(db, node, file_id))
}
Definition::Trait(trait_) if config.annotate_references || config.annotate_impls => {
trait_.source(db).and_then(|node| name_range(db, node, file_id))
}
Definition::Adt(adt) => match adt {
hir::Adt::Enum(enum_) => {
if config.annotate_enum_variant_references {
enum_
.variants(db)
.into_iter()
.filter_map(|variant| {
variant.source(db).and_then(|node| name_range(db, node, file_id))
})
.for_each(|range| {
let (annotation_range, target_position) = mk_ranges(range);
annotations.insert(Annotation {
range: annotation_range,
kind: AnnotationKind::HasReferences {
pos: target_position,
data: None,
},
});
})
}
if config.annotate_references || config.annotate_impls {
enum_.source(db).and_then(|node| name_range(db, node, file_id))
} else {
None
}
}
_ => {
if config.annotate_references || config.annotate_impls {
adt.source(db).and_then(|node| name_range(db, node, file_id))
} else {
None
}
}
},
_ => None,
};
let range = match range {
Some(range) => range,
None => return,
};
let (annotation_range, target_pos) = mk_ranges(range);
if config.annotate_impls && !matches!(def, Definition::Const(_)) {
annotations.insert(Annotation {
range: annotation_range,
kind: AnnotationKind::HasImpls { pos: target_pos, data: None },
});
}
if config.annotate_references {
annotations.insert(Annotation {
range: annotation_range,
kind: AnnotationKind::HasReferences { pos: target_pos, data: None },
});
}
fn name_range<T: HasName>(
db: &RootDatabase,
node: InFile<T>,
source_file_id: FileId,
) -> Option<(TextRange, Option<TextRange>)> {
if let Some(InRealFile { file_id, value }) = node.original_ast_node_rooted(db) {
if file_id == source_file_id {
return Some((
value.syntax().text_range(),
value.name().map(|name| name.syntax().text_range()),
));
}
}
None
}
});
if config.annotate_method_references {
annotations.extend(find_all_methods(db, file_id).into_iter().map(|range| {
let (annotation_range, target_range) = mk_ranges(range);
Annotation {
range: annotation_range,
kind: AnnotationKind::HasReferences { pos: target_range, data: None },
}
}));
}
annotations.into_iter().sorted_by_key(|a| (a.range.start(), a.range.end())).collect()
}
pub(crate) fn resolve_annotation(db: &RootDatabase, mut annotation: Annotation) -> Annotation {
match annotation.kind {
AnnotationKind::HasImpls { pos, ref mut data } => {
*data = goto_implementation(db, pos).map(|range| range.info);
}
AnnotationKind::HasReferences { pos, ref mut data } => {
*data = find_all_refs(&Semantics::new(db), pos, None).map(|result| {
result
.into_iter()
.flat_map(|res| res.references)
.flat_map(|(file_id, access)| {
access.into_iter().map(move |(range, _)| FileRange { file_id, range })
})
.collect()
});
}
_ => {}
};
annotation
}
fn should_skip_runnable(kind: &RunnableKind, binary_target: bool) -> bool {
match kind {
RunnableKind::Bin => !binary_target,
_ => false,
}
}
#[cfg(test)]
mod tests {
use expect_test::{expect, Expect};
use crate::{fixture, Annotation, AnnotationConfig};
use super::AnnotationLocation;
const DEFAULT_CONFIG: AnnotationConfig = AnnotationConfig {
binary_target: true,
annotate_runnables: true,
annotate_impls: true,
annotate_references: true,
annotate_method_references: true,
annotate_enum_variant_references: true,
location: AnnotationLocation::AboveName,
};
fn check_with_config(ra_fixture: &str, expect: Expect, config: &AnnotationConfig) {
let (analysis, file_id) = fixture::file(ra_fixture);
let annotations: Vec<Annotation> = analysis
.annotations(config, file_id)
.unwrap()
.into_iter()
.map(|annotation| analysis.resolve_annotation(annotation).unwrap())
.collect();
expect.assert_debug_eq(&annotations);
}
fn check(ra_fixture: &str, expect: Expect) {
check_with_config(ra_fixture, expect, &DEFAULT_CONFIG);
}
#[test]
fn const_annotations() {
check(
r#"
const DEMO: i32 = 123;
const UNUSED: i32 = 123;
fn main() {
let hello = DEMO;
}
"#,
expect![[r#"
[
Annotation {
range: 6..10,
kind: HasReferences {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 6,
},
data: Some(
[
FileRange {
file_id: FileId(
0,
),
range: 78..82,
},
],
),
},
},
Annotation {
range: 30..36,
kind: HasReferences {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 30,
},
data: Some(
[],
),
},
},
Annotation {
range: 53..57,
kind: Runnable(
Runnable {
use_name_in_title: false,
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 50..85,
focus_range: 53..57,
name: "main",
kind: Function,
},
kind: Bin,
cfg: None,
},
),
},
Annotation {
range: 53..57,
kind: HasReferences {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 53,
},
data: Some(
[],
),
},
},
]
"#]],
);
}
#[test]
fn struct_references_annotations() {
check(
r#"
struct Test;
fn main() {
let test = Test;
}
"#,
expect![[r#"
[
Annotation {
range: 7..11,
kind: HasReferences {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 7,
},
data: Some(
[
FileRange {
file_id: FileId(
0,
),
range: 41..45,
},
],
),
},
},
Annotation {
range: 7..11,
kind: HasImpls {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 7,
},
data: Some(
[],
),
},
},
Annotation {
range: 17..21,
kind: Runnable(
Runnable {
use_name_in_title: false,
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 14..48,
focus_range: 17..21,
name: "main",
kind: Function,
},
kind: Bin,
cfg: None,
},
),
},
Annotation {
range: 17..21,
kind: HasReferences {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 17,
},
data: Some(
[],
),
},
},
]
"#]],
);
}
#[test]
fn struct_and_trait_impls_annotations() {
check(
r#"
struct Test;
trait MyCoolTrait {}
impl MyCoolTrait for Test {}
fn main() {
let test = Test;
}
"#,
expect![[r#"
[
Annotation {
range: 7..11,
kind: HasReferences {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 7,
},
data: Some(
[
FileRange {
file_id: FileId(
0,
),
range: 57..61,
},
FileRange {
file_id: FileId(
0,
),
range: 93..97,
},
],
),
},
},
Annotation {
range: 7..11,
kind: HasImpls {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 7,
},
data: Some(
[
NavigationTarget {
file_id: FileId(
0,
),
full_range: 36..64,
focus_range: 57..61,
name: "impl",
kind: Impl,
},
],
),
},
},
Annotation {
range: 20..31,
kind: HasImpls {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 20,
},
data: Some(
[
NavigationTarget {
file_id: FileId(
0,
),
full_range: 36..64,
focus_range: 57..61,
name: "impl",
kind: Impl,
},
],
),
},
},
Annotation {
range: 20..31,
kind: HasReferences {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 20,
},
data: Some(
[
FileRange {
file_id: FileId(
0,
),
range: 41..52,
},
],
),
},
},
Annotation {
range: 69..73,
kind: HasReferences {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 69,
},
data: Some(
[],
),
},
},
Annotation {
range: 69..73,
kind: Runnable(
Runnable {
use_name_in_title: false,
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 66..100,
focus_range: 69..73,
name: "main",
kind: Function,
},
kind: Bin,
cfg: None,
},
),
},
]
"#]],
);
}
#[test]
fn runnable_annotation() {
check(
r#"
fn main() {}
"#,
expect![[r#"
[
Annotation {
range: 3..7,
kind: Runnable(
Runnable {
use_name_in_title: false,
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..12,
focus_range: 3..7,
name: "main",
kind: Function,
},
kind: Bin,
cfg: None,
},
),
},
Annotation {
range: 3..7,
kind: HasReferences {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 3,
},
data: Some(
[],
),
},
},
]
"#]],
);
}
#[test]
fn method_annotations() {
check(
r#"
struct Test;
impl Test {
fn self_by_ref(&self) {}
}
fn main() {
Test.self_by_ref();
}
"#,
expect![[r#"
[
Annotation {
range: 7..11,
kind: HasReferences {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 7,
},
data: Some(
[
FileRange {
file_id: FileId(
0,
),
range: 19..23,
},
FileRange {
file_id: FileId(
0,
),
range: 74..78,
},
],
),
},
},
Annotation {
range: 7..11,
kind: HasImpls {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 7,
},
data: Some(
[
NavigationTarget {
file_id: FileId(
0,
),
full_range: 14..56,
focus_range: 19..23,
name: "impl",
kind: Impl,
},
],
),
},
},
Annotation {
range: 33..44,
kind: HasReferences {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 33,
},
data: Some(
[
FileRange {
file_id: FileId(
0,
),
range: 79..90,
},
],
),
},
},
Annotation {
range: 61..65,
kind: HasReferences {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 61,
},
data: Some(
[],
),
},
},
Annotation {
range: 61..65,
kind: Runnable(
Runnable {
use_name_in_title: false,
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 58..95,
focus_range: 61..65,
name: "main",
kind: Function,
},
kind: Bin,
cfg: None,
},
),
},
]
"#]],
);
}
#[test]
fn test_annotations() {
check(
r#"
fn main() {}
mod tests {
#[test]
fn my_cool_test() {}
}
"#,
expect![[r#"
[
Annotation {
range: 3..7,
kind: HasReferences {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 3,
},
data: Some(
[],
),
},
},
Annotation {
range: 3..7,
kind: Runnable(
Runnable {
use_name_in_title: false,
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 0..12,
focus_range: 3..7,
name: "main",
kind: Function,
},
kind: Bin,
cfg: None,
},
),
},
Annotation {
range: 18..23,
kind: Runnable(
Runnable {
use_name_in_title: false,
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 14..64,
focus_range: 18..23,
name: "tests",
kind: Module,
description: "mod tests",
},
kind: TestMod {
path: "tests",
},
cfg: None,
},
),
},
Annotation {
range: 45..57,
kind: Runnable(
Runnable {
use_name_in_title: false,
nav: NavigationTarget {
file_id: FileId(
0,
),
full_range: 30..62,
focus_range: 45..57,
name: "my_cool_test",
kind: Function,
},
kind: Test {
test_id: Path(
"tests::my_cool_test",
),
attr: TestAttr {
ignore: false,
},
},
cfg: None,
},
),
},
]
"#]],
);
}
#[test]
fn test_no_annotations_outside_module_tree() {
check(
r#"
//- /foo.rs
struct Foo;
//- /lib.rs
// this file comes last since `check` checks the first file only
"#,
expect![[r#"
[]
"#]],
);
}
#[test]
fn test_no_annotations_macro_struct_def() {
check(
r#"
//- /lib.rs
macro_rules! m {
() => {
struct A {}
};
}
m!();
"#,
expect![[r#"
[]
"#]],
);
}
#[test]
fn test_annotations_appear_above_whole_item_when_configured_to_do_so() {
check_with_config(
r#"
/// This is a struct named Foo, obviously.
#[derive(Clone)]
struct Foo;
"#,
expect![[r#"
[
Annotation {
range: 0..71,
kind: HasReferences {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 67,
},
data: Some(
[],
),
},
},
Annotation {
range: 0..71,
kind: HasImpls {
pos: FilePosition {
file_id: FileId(
0,
),
offset: 67,
},
data: Some(
[],
),
},
},
]
"#]],
&AnnotationConfig { location: AnnotationLocation::AboveWholeItem, ..DEFAULT_CONFIG },
);
}
}