fix NameRefClass misclassifying proc-macros

Author: Veykril

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

@@ -56,7 +56,7 @@
     <span class="keyword">pub</span> <span class="keyword">trait</span> <span class="trait declaration public">Fn</span><span class="angle">&lt;</span><span class="type_param declaration">Args</span><span class="angle">&gt;</span><span class="colon">:</span> <span class="trait public">FnMut</span><span class="angle">&lt;</span><span class="type_param">Args</span><span class="angle">&gt;</span> <span class="brace">{</span><span class="brace">}</span>
 <span class="brace">}</span>
 
-<span class="module crate_root library">proc_macros</span><span class="operator">::</span><span class="function library">mirror</span><span class="macro_bang">!</span> <span class="brace">{</span>
+<span class="module crate_root library">proc_macros</span><span class="operator">::</span><span class="macro library">mirror</span><span class="macro_bang">!</span> <span class="brace">{</span>
     <span class="brace">{</span>
         <span class="comma">,</span><span class="builtin_type">i32</span> <span class="colon">:</span><span class="field declaration public">x</span> <span class="keyword">pub</span>
         <span class="comma">,</span><span class="builtin_type">i32</span> <span class="colon">:</span><span class="field declaration public">y</span> <span class="keyword">pub</span>

crates/ide_db/src/defs.rs

@@ -416,10 +416,10 @@ impl NameRefClass {
         }
 
         if let Some(path) = ast::PathSegment::cast(parent.clone()).map(|it| it.parent_path()) {
-            if path.qualifier().is_none() {
+            if path.parent_path().is_none() {
                 if let Some(macro_call) = path.syntax().parent().and_then(ast::MacroCall::cast) {
-                    // Only use this to resolve single-segment macro calls like `foo!()`. Multi-segment
-                    // paths are handled below (allowing `log$0::info!` to resolve to the log crate).
+                    // Only use this to resolve to macro calls for last segments as qualifiers resolve
+                    // to modules below.
                     if let Some(macro_def) = sema.resolve_macro_call(&macro_call) {
                         return Some(NameRefClass::Definition(Definition::Macro(macro_def)));
                     }