[clang] [ClangRepl] Type Directed Code Completion (PR #67349)

[Vassil Vassilev via cfe-commits]

================
@@ -56,26 +69,151 @@ class ReplCompletionConsumer : public CodeCompleteConsumer {
   std::shared_ptr<GlobalCodeCompletionAllocator> CCAllocator;
   CodeCompletionTUInfo CCTUInfo;
   std::vector<std::string> &Results;
+  ReplCodeCompleter &CC;
+};
+
+/*
+  The abstract class CompletionContextHandler contains four interfaces, each of
+  which handles one type of completion result.
+
+  Its substract classes are used to create concrete handlers based on
+  CodeCompletionContext.
+ */
----------------
vgvassilev wrote:

```suggestion
  /// The abstract class CompletionContextHandler contains four interfaces, each of
  /// which handles one type of completion result.
  ///
  /// Its substract classes are used to create concrete handlers based on
  /// \c CodeCompletionContext.
```

https://github.com/llvm/llvm-project/pull/67349