Implement a routine to check if a function was deleted.

Author: vgvassilev

include/clang/Interpreter/CppInterOp.h

@@ -226,6 +226,9 @@ namespace Cpp {
   /// void N::f(int i, double d, long l = 0, char ch = 'a').
   std::string GetFunctionSignature(TCppFunction_t func);
 
+  /// Returns if a function was marked as \c =delete.
+  bool IsFunctionDeleted(TCppConstFunction_t function);
+
   bool IsTemplatedFunction(TCppFunction_t func);
 
   bool ExistsFunctionTemplate(TCppSema_t sema, const std::string &name,

lib/Interpreter/CppInterOp.cpp

@@ -809,6 +809,11 @@ namespace Cpp {
     }
   }
 
+  bool IsFunctionDeleted(TCppConstFunction_t function) {
+    auto *FD = cast<const FunctionDecl>((const clang::Decl*)function);
+    return FD->isDeleted();
+  }
+
   bool IsTemplatedFunction(TCppFunction_t func)
   {
     auto *D = (Decl *) func;