[clang-tools-extra] [clangd] Add inlay hints for default function arguments and implicit lambda captures (PR #95712)

[Younan Zhang via cfe-commits]

================
@@ -372,6 +382,34 @@ maybeDropCxxExplicitObjectParameters(ArrayRef<const ParmVarDecl *> Params) {
   return Params;
 }
 
+llvm::StringRef getLambdaCaptureName(const LambdaCapture &Capture) {
+  if (Capture.capturesVariable())
+    return Capture.getCapturedVar()->getName();
+  if (Capture.capturesThis())
+    return llvm::StringRef{"this"};
+  return llvm::StringRef{"unknown"};
----------------
zyn0217 wrote:

Can we handle all the capture kinds here? I was expecting otherwise an assert or an `llvm_unreachable` here rather than printing "unknown".

https://github.com/llvm/llvm-project/pull/95712