Remove code duplication

Author: Veykril

crates/ide/src/moniker.rs

@@ -1,17 +1,17 @@
 //! This module generates [moniker](https://microsoft.github.io/language-server-protocol/specifications/lsif/0.6.0/specification/#exportsImports)
 //! for LSIF and LSP.
 
-use hir::{db::DefDatabase, AsAssocItem, AssocItemContainer, Crate, Name, Semantics};
+use hir::{AsAssocItem, AssocItemContainer, Crate, Name, Semantics};
 use ide_db::{
-    base_db::{CrateOrigin, FileId, FileLoader, FilePosition, LangCrateOrigin},
+    base_db::{CrateOrigin, FilePosition, LangCrateOrigin},
     defs::{Definition, IdentClass},
     helpers::pick_best_token,
     RootDatabase,
 };
 use itertools::Itertools;
 use syntax::{AstNode, SyntaxKind::*, T};
 
-use crate::{doc_links::token_as_doc_comment, RangeInfo};
+use crate::{doc_links::token_as_doc_comment, parent_module::crates_for, RangeInfo};
 
 #[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
 pub enum MonikerDescriptorKind {
@@ -77,25 +77,13 @@ pub struct PackageInformation {
     pub version: Option<String>,
 }
 
-pub(crate) fn crate_for_file(db: &RootDatabase, file_id: FileId) -> Option<Crate> {
-    for &krate in db.relevant_crates(file_id).iter() {
-        let crate_def_map = db.crate_def_map(krate);
-        for (_, data) in crate_def_map.modules() {
-            if data.origin.file_id() == Some(file_id) {
-                return Some(krate.into());
-            }
-        }
-    }
-    None
-}
-
 pub(crate) fn moniker(
     db: &RootDatabase,
     FilePosition { file_id, offset }: FilePosition,
 ) -> Option<RangeInfo<Vec<MonikerResult>>> {
     let sema = &Semantics::new(db);
     let file = sema.parse(file_id).syntax().clone();
-    let current_crate = crate_for_file(db, file_id)?;
+    let current_crate: hir::Crate = crates_for(db, file_id).pop()?.into();
     let original_token = pick_best_token(file.token_at_offset(offset), |kind| match kind {
         IDENT
         | INT_NUMBER

crates/ide/src/static_index.rs

@@ -13,7 +13,8 @@ use syntax::{AstNode, SyntaxKind::*, SyntaxToken, TextRange, T};
 
 use crate::{
     hover::hover_for_definition,
-    moniker::{crate_for_file, def_to_moniker, MonikerResult},
+    moniker::{def_to_moniker, MonikerResult},
+    parent_module::crates_for,
     Analysis, Fold, HoverConfig, HoverDocFormat, HoverResult, InlayHint, InlayHintsConfig,
     TryToNav,
 };
@@ -99,7 +100,7 @@ fn all_modules(db: &dyn HirDatabase) -> Vec<Module> {
 
 impl StaticIndex<'_> {
     fn add_file(&mut self, file_id: FileId) {
-        let current_crate = crate_for_file(self.db, file_id);
+        let current_crate = crates_for(self.db, file_id).pop().map(Into::into);
         let folds = self.analysis.folding_ranges(file_id).unwrap();
         let inlay_hints = self
             .analysis