1 //! Entry point for call-hierarchy
5 defs::{Definition, NameClass, NameRefClass},
6 helpers::pick_best_token,
8 FxIndexMap, RootDatabase,
10 use syntax::{ast, AstNode, SyntaxKind::IDENT, TextRange};
12 use crate::{goto_definition, FilePosition, NavigationTarget, RangeInfo, TryToNav};
14 #[derive(Debug, Clone)]
16 pub target: NavigationTarget,
17 pub ranges: Vec<TextRange>,
22 pub(crate) fn debug_render(&self) -> String {
23 format!("{} : {:?}", self.target.debug_render(), self.ranges)
27 pub(crate) fn call_hierarchy(
29 position: FilePosition,
30 ) -> Option<RangeInfo<Vec<NavigationTarget>>> {
31 goto_definition::goto_definition(db, position)
34 pub(crate) fn incoming_calls(
36 FilePosition { file_id, offset }: FilePosition,
37 ) -> Option<Vec<CallItem>> {
38 let sema = &Semantics::new(db);
40 let file = sema.parse(file_id);
41 let file = file.syntax();
42 let mut calls = CallLocations::default();
45 .find_nodes_at_offset_with_descend(file, offset)
46 .filter_map(move |node| match node {
47 ast::NameLike::NameRef(name_ref) => match NameRefClass::classify(sema, &name_ref)? {
48 NameRefClass::Definition(def @ Definition::Function(_)) => Some(def),
51 ast::NameLike::Name(name) => match NameClass::classify(sema, &name)? {
52 NameClass::Definition(def @ Definition::Function(_)) => Some(def),
55 ast::NameLike::Lifetime(_) => None,
57 .flat_map(|func| func.usages(sema).all());
59 for (_, references) in references {
61 references.iter().filter_map(|FileReference { name, .. }| name.as_name_ref());
62 for name in references {
63 // This target is the containing function
64 let nav = sema.ancestors_with_macros(name.syntax().clone()).find_map(|node| {
65 let def = ast::Fn::cast(node).and_then(|fn_| sema.to_def(&fn_))?;
66 def.try_to_nav(sema.db)
68 if let Some(nav) = nav {
69 calls.add(nav, sema.original_range(name.syntax()).range);
74 Some(calls.into_items())
77 pub(crate) fn outgoing_calls(db: &RootDatabase, position: FilePosition) -> Option<Vec<CallItem>> {
78 let sema = Semantics::new(db);
79 let file_id = position.file_id;
80 let file = sema.parse(file_id);
81 let file = file.syntax();
82 let token = pick_best_token(file.token_at_offset(position.offset), |kind| match kind {
86 let mut calls = CallLocations::default();
88 sema.descend_into_macros(token)
90 .filter_map(|it| it.parent_ancestors().nth(1).and_then(ast::Item::cast))
91 .filter_map(|item| match item {
92 ast::Item::Const(c) => c.body().map(|it| it.syntax().descendants()),
93 ast::Item::Fn(f) => f.body().map(|it| it.syntax().descendants()),
94 ast::Item::Static(s) => s.body().map(|it| it.syntax().descendants()),
98 .filter_map(ast::CallableExpr::cast)
99 .filter_map(|call_node| {
100 let (nav_target, range) = match call_node {
101 ast::CallableExpr::Call(call) => {
102 let expr = call.expr()?;
103 let callable = sema.type_of_expr(&expr)?.original.as_callable(db)?;
104 match callable.kind() {
105 hir::CallableKind::Function(it) => {
106 let range = expr.syntax().text_range();
107 it.try_to_nav(db).zip(Some(range))
112 ast::CallableExpr::MethodCall(expr) => {
113 let range = expr.name_ref()?.syntax().text_range();
114 let function = sema.resolve_method_call(&expr)?;
115 function.try_to_nav(db).zip(Some(range))
118 Some((nav_target, range))
120 .for_each(|(nav, range)| calls.add(nav, range));
122 Some(calls.into_items())
126 struct CallLocations {
127 funcs: FxIndexMap<NavigationTarget, Vec<TextRange>>,
131 fn add(&mut self, target: NavigationTarget, range: TextRange) {
132 self.funcs.entry(target).or_default().push(range);
135 fn into_items(self) -> Vec<CallItem> {
136 self.funcs.into_iter().map(|(target, ranges)| CallItem { target, ranges }).collect()
142 use expect_test::{expect, Expect};
143 use ide_db::base_db::FilePosition;
144 use itertools::Itertools;
151 expected_incoming: Expect,
152 expected_outgoing: Expect,
154 let (analysis, pos) = fixture::position(ra_fixture);
156 let mut navs = analysis.call_hierarchy(pos).unwrap().unwrap().info;
157 assert_eq!(navs.len(), 1);
158 let nav = navs.pop().unwrap();
159 expected.assert_eq(&nav.debug_render());
162 FilePosition { file_id: nav.file_id, offset: nav.focus_or_full_range().start() };
163 let incoming_calls = analysis.incoming_calls(item_pos).unwrap().unwrap();
165 .assert_eq(&incoming_calls.into_iter().map(|call| call.debug_render()).join("\n"));
167 let outgoing_calls = analysis.outgoing_calls(item_pos).unwrap().unwrap();
169 .assert_eq(&outgoing_calls.into_iter().map(|call| call.debug_render()).join("\n"));
173 fn test_call_hierarchy_on_ref() {
182 expect![["callee Function FileId(0) 0..14 3..9"]],
183 expect![["caller Function FileId(0) 15..44 18..24 : [33..39]"]],
189 fn test_call_hierarchy_on_def() {
198 expect![["callee Function FileId(0) 0..14 3..9"]],
199 expect![["caller Function FileId(0) 15..44 18..24 : [33..39]"]],
205 fn test_call_hierarchy_in_same_fn() {
215 expect![["callee Function FileId(0) 0..14 3..9"]],
216 expect![["caller Function FileId(0) 15..58 18..24 : [33..39, 47..53]"]],
222 fn test_call_hierarchy_in_different_fn() {
235 expect![["callee Function FileId(0) 0..14 3..9"]],
237 caller1 Function FileId(0) 15..45 18..25 : [34..40]
238 caller2 Function FileId(0) 47..77 50..57 : [66..72]"]],
244 fn test_call_hierarchy_in_tests_mod() {
263 expect![["callee Function FileId(0) 0..14 3..9"]],
265 caller1 Function FileId(0) 15..45 18..25 : [34..40]
266 test_caller Function FileId(0) 95..149 110..121 : [134..140]"#]],
272 fn test_call_hierarchy_in_different_files() {
286 expect![["callee Function FileId(1) 0..18 7..13"]],
287 expect![["caller Function FileId(0) 27..56 30..36 : [45..51]"]],
293 fn test_call_hierarchy_outgoing() {
303 expect![["caller Function FileId(0) 15..58 18..24"]],
305 expect![["callee Function FileId(0) 0..14 3..9 : [33..39, 47..53]"]],
310 fn test_call_hierarchy_outgoing_in_different_files() {
324 expect![["caller Function FileId(0) 27..56 30..36"]],
326 expect![["callee Function FileId(1) 0..18 7..13 : [45..51]"]],
331 fn test_call_hierarchy_incoming_outgoing() {
347 expect![["caller2 Function FileId(0) 33..64 36..43"]],
348 expect![["caller1 Function FileId(0) 0..31 3..10 : [19..26]"]],
349 expect![["caller3 Function FileId(0) 66..83 69..76 : [52..59]"]],
354 fn test_call_hierarchy_issue_5103() {
367 expect![["a Function FileId(0) 0..18 3..4"]],
368 expect![["main Function FileId(0) 31..52 34..38 : [47..48]"]],
369 expect![["b Function FileId(0) 20..29 23..24 : [13..14]"]],
384 expect![["b Function FileId(0) 20..29 23..24"]],
385 expect![["a Function FileId(0) 0..18 3..4 : [13..14]"]],
391 fn test_call_hierarchy_in_macros_incoming() {
394 macro_rules! define {
409 expect![[r#"callee Function FileId(0) 144..159 152..158"#]],
410 expect![[r#"caller Function FileId(0) 160..194 163..169 : [184..190]"#]],
415 macro_rules! define {
430 expect![[r#"callee Function FileId(0) 144..159 152..158"#]],
431 expect![[r#"caller Function FileId(0) 160..194 163..169 : [184..190]"#]],
437 fn test_call_hierarchy_in_macros_outgoing() {
440 macro_rules! define {
455 expect![[r#"caller Function FileId(0) 160..194 163..169"#]],
463 fn test_trait_method_call_hierarchy() {
480 expect![["callee Function FileId(0) 15..27 18..24"]],
481 expect![["caller Function FileId(0) 82..115 85..91 : [104..110]"]],