Remove suspicious unwrap

Author: Veykril

crates/hir-def/src/data.rs

@@ -468,7 +468,7 @@ pub struct ExternCrateDeclData {
     pub name: Name,
     pub alias: Option<ImportAlias>,
     pub visibility: RawVisibility,
-    pub crate_id: CrateId,
+    pub crate_id: Option<CrateId>,
 }
 
 impl ExternCrateDeclData {
@@ -482,15 +482,12 @@ impl ExternCrateDeclData {
 
         let name = extern_crate.name.clone();
         let crate_id = if name == hir_expand::name![self] {
-            loc.container.krate()
+            Some(loc.container.krate())
         } else {
             db.crate_def_map(loc.container.krate())
                 .extern_prelude()
                 .find(|&(prelude_name, ..)| *prelude_name == name)
-                // FIXME: Suspicious unwrap
-                .unwrap()
-                .1
-                .krate()
+                .map(|(_, root)| root.krate())
         };
 
         Arc::new(Self {

crates/hir/src/attrs.rs

@@ -126,7 +126,7 @@ impl HasAttrs for ExternCrateDecl {
         db.attrs_with_owner(def)
     }
     fn docs(self, db: &dyn HirDatabase) -> Option<Documentation> {
-        let crate_docs = self.resolved_crate(db).root_module().attrs(db).docs().map(String::from);
+        let crate_docs = self.resolved_crate(db)?.root_module().attrs(db).docs().map(String::from);
         let def = AttrDefId::ExternCrateId(self.into());
         let decl_docs = db.attrs(def).docs().map(String::from);
         match (decl_docs, crate_docs) {

crates/hir/src/lib.rs

@@ -2138,8 +2138,8 @@ impl ExternCrateDecl {
         self.id.module(db.upcast()).into()
     }
 
-    pub fn resolved_crate(self, db: &dyn HirDatabase) -> Crate {
-        db.extern_crate_decl_data(self.id).crate_id.into()
+    pub fn resolved_crate(self, db: &dyn HirDatabase) -> Option<Crate> {
+        db.extern_crate_decl_data(self.id).crate_id.map(Into::into)
     }
 
     pub fn name(self, db: &dyn HirDatabase) -> Name {

crates/ide-db/src/defs.rs

@@ -538,7 +538,7 @@ impl NameRefClass {
                 },
                 ast::ExternCrate(extern_crate_ast) => {
                     let extern_crate = sema.to_def(&extern_crate_ast)?;
-                    let krate = extern_crate.resolved_crate(sema.db);
+                    let krate = extern_crate.resolved_crate(sema.db)?;
                     Some(if extern_crate_ast.rename().is_some() {
                         NameRefClass::Definition(Definition::Module(krate.root_module()))
                     } else {

crates/ide/src/goto_definition.rs

@@ -77,10 +77,11 @@ pub(crate) fn goto_definition(
                     .into_iter()
                     .flat_map(|def| {
                         if let Definition::ExternCrateDecl(crate_def) = def {
-                            return vec![crate_def
+                            return crate_def
                                 .resolved_crate(db)
-                                .root_module()
-                                .to_nav(sema.db)];
+                                .map(|it| it.root_module().to_nav(sema.db))
+                                .into_iter()
+                                .collect();
                         }
                         try_filter_trait_item_definition(sema, &def)
                             .unwrap_or_else(|| def_to_nav(sema.db, def))

crates/ide/src/syntax_highlighting/test_data/highlight_extern_crate.html

@@ -45,4 +45,5 @@
 </style>
 <pre><code><span class="keyword">extern</span> <span class="keyword">crate</span> <span class="module crate_root default_library library">std</span><span class="semicolon">;</span>
 <span class="keyword">extern</span> <span class="keyword">crate</span> <span class="module crate_root default_library library">alloc</span> <span class="keyword">as</span> <span class="module crate_root declaration">abc</span><span class="semicolon">;</span>
+<span class="keyword">extern</span> <span class="keyword">crate</span> <span class="unresolved_reference">unresolved</span> <span class="keyword">as</span> <span class="module crate_root declaration">definitely_unresolved</span><span class="semicolon">;</span>
 </code></pre>

crates/ide/src/syntax_highlighting/tests.rs

@@ -804,6 +804,7 @@ fn test_extern_crate() {
 //- /main.rs crate:main deps:std,alloc
 extern crate std;
 extern crate alloc as abc;
+extern crate unresolved as definitely_unresolved;
 //- /std/lib.rs crate:std
 pub struct S;
 //- /alloc/lib.rs crate:alloc