1 files changed, 27 insertions, 0 deletions
diff --git a/clang/lib/AST/NSAPI.cpp b/clang/lib/AST/NSAPI.cpp
index 579a92cacc9..aac31e7f15c 100644
--- a/clang/lib/AST/NSAPI.cpp
+++ b/clang/lib/AST/NSAPI.cpp
@@ -10,6 +10,7 @@
 #include "clang/AST/NSAPI.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/AST/Expr.h"
+#include "llvm/ADT/StringSwitch.h"
 
 using namespace clang;
 
@@ -400,6 +401,32 @@ bool NSAPI::isObjCNSUIntegerType(QualType T) const {
   return isObjCTypedef(T, "NSUInteger", NSUIntegerId);
 }
 
+StringRef NSAPI::GetNSIntegralKind(QualType T) const {
+  if (!Ctx.getLangOpts().ObjC1 || T.isNull())
+    return StringRef();
+  
+  while (const TypedefType *TDT = T->getAs<TypedefType>()) {
+    StringRef NSIntegralResust =
+      llvm::StringSwitch<StringRef>(
+        TDT->getDecl()->getDeclName().getAsIdentifierInfo()->getName())
+    .Case("int8_t", "int8_t")
+    .Case("int16_t", "int16_t")
+    .Case("int32_t", "int32_t")
+    .Case("NSInteger", "NSInteger")
+    .Case("int64_t", "int64_t")
+    .Case("uint8_t", "uint8_t")
+    .Case("uint16_t", "uint16_t")
+    .Case("uint32_t", "uint32_t")
+    .Case("NSUInteger", "NSUInteger")
+    .Case("uint64_t", "uint64_t")
+    .Default(StringRef());
+    if (!NSIntegralResust.empty())
+      return NSIntegralResust;
+    T = TDT->desugar();
+  }
+  return StringRef();
+}
+
 bool NSAPI::isObjCTypedef(QualType T,
                           StringRef name, IdentifierInfo *&II) const {
   if (!Ctx.getLangOpts().ObjC1)