From e3eeccf8ef2029bb54ba05af420a65b429763477 Mon Sep 17 00:00:00 2001
From: Lukas Wirth <lukastw97@gmail.com>
Date: Fri, 29 Jan 2021 15:59:52 +0100
Subject: Prefer ValueNS when resolving hir path for PathExpressions

---
 crates/hir/src/source_analyzer.rs | 45 +++++++++++++++++++++++++++------------
 1 file changed, 31 insertions(+), 14 deletions(-)

(limited to 'crates/hir/src')

diff --git a/crates/hir/src/source_analyzer.rs b/crates/hir/src/source_analyzer.rs
index 524120d08..626c3078a 100644
--- a/crates/hir/src/source_analyzer.rs
+++ b/crates/hir/src/source_analyzer.rs
@@ -222,6 +222,7 @@ impl SourceAnalyzer {
         db: &dyn HirDatabase,
         path: &ast::Path,
     ) -> Option<PathResolution> {
+        let mut prefer_value_ns = false;
         if let Some(path_expr) = path.syntax().parent().and_then(ast::PathExpr::cast) {
             let expr_id = self.expr_id(db, &path_expr.into())?;
             let infer = self.infer.as_ref()?;
@@ -233,9 +234,7 @@ impl SourceAnalyzer {
             {
                 return Some(PathResolution::Def(ModuleDef::Variant(variant.into())));
             }
-            if let Some(func) = infer[expr_id].as_fn_def() {
-                return Some(PathResolution::Def(ModuleDef::Function(func.into())));
-            }
+            prefer_value_ns = true;
         }
 
         if let Some(path_pat) = path.syntax().parent().and_then(ast::PathPat::cast) {
@@ -281,7 +280,7 @@ impl SourceAnalyzer {
             }
         }
 
-        resolve_hir_path(db, &self.resolver, &hir_path)
+        resolve_hir_path_(db, &self.resolver, &hir_path, prefer_value_ns)
     }
 
     pub(crate) fn record_literal_missing_fields(
@@ -451,12 +450,22 @@ fn adjust(
         .map(|(_ptr, scope)| *scope)
 }
 
+#[inline]
 pub(crate) fn resolve_hir_path(
     db: &dyn HirDatabase,
     resolver: &Resolver,
     path: &Path,
 ) -> Option<PathResolution> {
-    let types =
+    resolve_hir_path_(db, resolver, path, false)
+}
+
+fn resolve_hir_path_(
+    db: &dyn HirDatabase,
+    resolver: &Resolver,
+    path: &Path,
+    prefer_value_ns: bool,
+) -> Option<PathResolution> {
+    let types = || {
         resolver.resolve_path_in_type_ns_fully(db.upcast(), path.mod_path()).map(|ty| match ty {
             TypeNs::SelfType(it) => PathResolution::SelfType(it.into()),
             TypeNs::GenericParam(id) => PathResolution::TypeParam(TypeParam { id }),
@@ -467,10 +476,11 @@ pub(crate) fn resolve_hir_path(
             TypeNs::TypeAliasId(it) => PathResolution::Def(TypeAlias::from(it).into()),
             TypeNs::BuiltinType(it) => PathResolution::Def(it.into()),
             TypeNs::TraitId(it) => PathResolution::Def(Trait::from(it).into()),
-        });
+        })
+    };
 
     let body_owner = resolver.body_owner();
-    let values =
+    let values = || {
         resolver.resolve_path_in_value_ns_fully(db.upcast(), path.mod_path()).and_then(|val| {
             let res = match val {
                 ValueNs::LocalBinding(pat_id) => {
@@ -486,18 +496,25 @@ pub(crate) fn resolve_hir_path(
                 ValueNs::GenericParam(it) => PathResolution::ConstParam(it.into()),
             };
             Some(res)
-        });
+        })
+    };
 
-    let items = resolver
-        .resolve_module_path_in_items(db.upcast(), path.mod_path())
-        .take_types()
-        .map(|it| PathResolution::Def(it.into()));
+    let items = || {
+        resolver
+            .resolve_module_path_in_items(db.upcast(), path.mod_path())
+            .take_types()
+            .map(|it| PathResolution::Def(it.into()))
+    };
 
-    types.or(values).or(items).or_else(|| {
+    let macros = || {
         resolver
             .resolve_path_as_macro(db.upcast(), path.mod_path())
             .map(|def| PathResolution::Macro(def.into()))
-    })
+    };
+
+    if prefer_value_ns { values().or_else(types) } else { types().or_else(values) }
+        .or_else(items)
+        .or_else(macros)
 }
 
 /// Resolves a path where we know it is a qualifier of another path.
-- 
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