[clang] [ASTMatchers] Extend hasName matcher when matching templates (PR #100349)

[Julian Schmidt via cfe-commits]

================
@@ -638,6 +638,39 @@ bool HasNameMatcher::matchesNodeFullFast(const NamedDecl &Node) const {
   return Patterns.foundMatch(/*AllowFullyQualified=*/true);
 }
 
+static std::optional<StringRef> consumePatternBack(StringRef Pattern,
+                                                   StringRef Target) {
+  while (!Pattern.empty()) {
+    auto Index = Pattern.rfind("<*>");
+    if (Index == StringRef::npos) {
+      if (Target.consume_back(Pattern))
+        return Target;
+      return {};
+    }
+    auto Suffix = Pattern.substr(Index + 2);
+    if (!Target.consume_back(Suffix))
+      return {};
+    auto BracketCount = 1;
----------------
5chmidti wrote:

You're using `auto` three times here without the type mentioned on the RHS (not sure how strict `clang/` is w.r.t. this)

`Suffix` and `Index` can be `const`

https://github.com/llvm/llvm-project/pull/100349