1 //! This module provides `StaticIndex` which is used for powering
2 //! read-only code browsers and emitting LSIF
4 use std::collections::HashMap;
6 use hir::{db::HirDatabase, Crate, Module, Semantics};
8 base_db::{FileId, FileRange, SourceDatabaseExt},
9 defs::{Definition, IdentClass},
10 FxHashSet, RootDatabase,
12 use syntax::{AstNode, SyntaxKind::*, SyntaxToken, TextRange, T};
15 hover::hover_for_definition,
16 inlay_hints::AdjustmentHintsMode,
17 moniker::{def_to_moniker, MonikerResult},
18 parent_module::crates_for,
19 Analysis, Fold, HoverConfig, HoverDocFormat, HoverResult, InlayHint, InlayHintsConfig,
23 /// A static representation of fully analyzed source code.
25 /// The intended use-case is powering read-only code browsers and emitting LSIF
27 pub struct StaticIndex<'a> {
28 pub files: Vec<StaticIndexedFile>,
29 pub tokens: TokenStore,
30 analysis: &'a Analysis,
32 def_map: HashMap<Definition, TokenId>,
36 pub struct ReferenceData {
38 pub is_definition: bool,
42 pub struct TokenStaticData {
43 pub hover: Option<HoverResult>,
44 pub definition: Option<FileRange>,
45 pub references: Vec<ReferenceData>,
46 pub moniker: Option<MonikerResult>,
49 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
50 pub struct TokenId(usize);
53 pub fn raw(self) -> usize {
58 #[derive(Default, Debug)]
59 pub struct TokenStore(Vec<TokenStaticData>);
62 pub fn insert(&mut self, data: TokenStaticData) -> TokenId {
63 let id = TokenId(self.0.len());
68 pub fn get_mut(&mut self, id: TokenId) -> Option<&mut TokenStaticData> {
72 pub fn get(&self, id: TokenId) -> Option<&TokenStaticData> {
76 pub fn iter(self) -> impl Iterator<Item = (TokenId, TokenStaticData)> {
77 self.0.into_iter().enumerate().map(|(i, x)| (TokenId(i), x))
82 pub struct StaticIndexedFile {
85 pub inlay_hints: Vec<InlayHint>,
86 pub tokens: Vec<(TextRange, TokenId)>,
89 fn all_modules(db: &dyn HirDatabase) -> Vec<Module> {
90 let mut worklist: Vec<_> =
91 Crate::all(db).into_iter().map(|krate| krate.root_module(db)).collect();
92 let mut modules = Vec::new();
94 while let Some(module) = worklist.pop() {
96 worklist.extend(module.children(db));
102 impl StaticIndex<'_> {
103 fn add_file(&mut self, file_id: FileId) {
104 let current_crate = crates_for(self.db, file_id).pop().map(Into::into);
105 let folds = self.analysis.folding_ranges(file_id).unwrap();
106 let inlay_hints = self
110 location_links: true,
112 discriminant_hints: crate::DiscriminantHints::Fieldless,
114 parameter_hints: true,
115 chaining_hints: true,
116 closure_return_type_hints: crate::ClosureReturnTypeHints::WithBlock,
117 lifetime_elision_hints: crate::LifetimeElisionHints::Never,
118 adjustment_hints: crate::AdjustmentHints::Never,
119 adjustment_hints_mode: AdjustmentHintsMode::Prefix,
120 adjustment_hints_hide_outside_unsafe: false,
121 hide_named_constructor_hints: false,
122 hide_closure_initialization_hints: false,
123 param_names_for_lifetime_elision_hints: false,
124 binding_mode_hints: false,
125 max_length: Some(25),
126 closing_brace_hints_min_lines: Some(25),
133 let sema = hir::Semantics::new(self.db);
134 let tokens_or_nodes = sema.parse(file_id).syntax().clone();
135 let tokens = tokens_or_nodes.descendants_with_tokens().filter_map(|x| match x {
136 syntax::NodeOrToken::Node(_) => None,
137 syntax::NodeOrToken::Token(x) => Some(x),
139 let hover_config = HoverConfig {
140 links_in_hover: true,
141 documentation: Some(HoverDocFormat::Markdown),
144 let tokens = tokens.filter(|token| {
147 IDENT | INT_NUMBER | LIFETIME_IDENT | T![self] | T![super] | T![crate] | T![Self]
150 let mut result = StaticIndexedFile { file_id, inlay_hints, folds, tokens: vec![] };
151 for token in tokens {
152 let range = token.text_range();
153 let node = token.parent().unwrap();
154 let def = match get_definition(&sema, token.clone()) {
158 let id = if let Some(x) = self.def_map.get(&def) {
161 let x = self.tokens.insert(TokenStaticData {
162 hover: hover_for_definition(&sema, file_id, def, &node, &hover_config),
165 .map(|x| FileRange { file_id: x.file_id, range: x.focus_or_full_range() }),
167 moniker: current_crate.and_then(|cc| def_to_moniker(self.db, def, cc)),
169 self.def_map.insert(def, x);
172 let token = self.tokens.get_mut(id).unwrap();
173 token.references.push(ReferenceData {
174 range: FileRange { range, file_id },
175 is_definition: match def.try_to_nav(self.db) {
176 Some(x) => x.file_id == file_id && x.focus_or_full_range() == range,
180 result.tokens.push((range, id));
182 self.files.push(result);
185 pub fn compute(analysis: &Analysis) -> StaticIndex<'_> {
186 let db = &*analysis.db;
187 let work = all_modules(db).into_iter().filter(|module| {
188 let file_id = module.definition_source(db).file_id.original_file(db);
189 let source_root = db.file_source_root(file_id);
190 let source_root = db.source_root(source_root);
191 !source_root.is_library
193 let mut this = StaticIndex {
195 tokens: Default::default(),
198 def_map: Default::default(),
200 let mut visited_files = FxHashSet::default();
202 let file_id = module.definition_source(db).file_id.original_file(db);
203 if visited_files.contains(&file_id) {
206 this.add_file(file_id);
208 visited_files.insert(file_id);
214 fn get_definition(sema: &Semantics<'_, RootDatabase>, token: SyntaxToken) -> Option<Definition> {
215 for token in sema.descend_into_macros(token) {
216 let def = IdentClass::classify_token(sema, &token).map(IdentClass::definitions_no_ops);
217 if let Some(&[x]) = def.as_deref() {
226 use crate::{fixture, StaticIndex};
227 use ide_db::base_db::FileRange;
228 use std::collections::HashSet;
229 use syntax::TextSize;
231 fn check_all_ranges(ra_fixture: &str) {
232 let (analysis, ranges) = fixture::annotations_without_marker(ra_fixture);
233 let s = StaticIndex::compute(&analysis);
234 let mut range_set: HashSet<_> = ranges.iter().map(|x| x.0).collect();
236 for (range, _) in f.tokens {
237 let x = FileRange { file_id: f.file_id, range };
238 if !range_set.contains(&x) {
239 panic!("additional range {x:?}");
241 range_set.remove(&x);
244 if !range_set.is_empty() {
245 panic!("unfound ranges {range_set:?}");
249 fn check_definitions(ra_fixture: &str) {
250 let (analysis, ranges) = fixture::annotations_without_marker(ra_fixture);
251 let s = StaticIndex::compute(&analysis);
252 let mut range_set: HashSet<_> = ranges.iter().map(|x| x.0).collect();
253 for (_, t) in s.tokens.iter() {
254 if let Some(x) = t.definition {
255 if x.range.start() == TextSize::from(0) {
256 // ignore definitions that are whole of file
259 if !range_set.contains(&x) {
260 panic!("additional definition {x:?}");
262 range_set.remove(&x);
265 if !range_set.is_empty() {
266 panic!("unfound definitions {range_set:?}");
271 fn struct_and_enum() {
294 //- /main.rs crate:main deps:foo
303 //- /foo/lib.rs crate:foo
317 #[rustc_builtin_macro]
318 //^^^^^^^^^^^^^^^^^^^