[libclang] Introduce clang_Type_getCXXRefQualifier whichexposes ref-qualifier information of function type.

Patch by Che-Liang Chiou!

llvm-svn: 192493

3 files changed, 24 insertions, 0 deletions

diff --git a/clang/tools/c-index-test/c-index-test.c b/clang/tools/c-index-test/c-index-test.c
index 2e8b58b..90a6528 100644
--- a/clang/tools/c-index-test/c-index-test.c
+++ b/clang/tools/c-index-test/c-index-test.c
@@ -1160,6 +1160,7 @@ static enum CXChildVisitResult PrintType(CXCursor cursor, CXCursor p,
                                          CXClientData d) {
   if (!clang_isInvalid(clang_getCursorKind(cursor))) {
     CXType T = clang_getCursorType(cursor);
+    enum CXRefQualifierKind RQ = clang_Type_getCXXRefQualifier(T);
     PrintCursor(cursor, NULL);
     PrintTypeAndTypeKind(T, " [type=%s] [typekind=%s]");
     if (clang_isConstQualifiedType(T))
@@ -1168,6 +1169,10 @@ static enum CXChildVisitResult PrintType(CXCursor cursor, CXCursor p,
       printf(" volatile");
     if (clang_isRestrictQualifiedType(T))
       printf(" restrict");
+    if (RQ == CXRefQualifier_LValue)
+      printf(" lvalue-ref-qualifier");
+    if (RQ == CXRefQualifier_RValue)
+      printf(" rvalue-ref-qualifier");
     /* Print the canonical type if it is different. */
     {
       CXType CT = clang_getCanonicalType(T);
diff --git a/clang/tools/libclang/CXType.cpp b/clang/tools/libclang/CXType.cpp
index 9233e97..1e2cb18 100644
--- a/clang/tools/libclang/CXType.cpp
+++ b/clang/tools/libclang/CXType.cpp
@@ -816,6 +816,24 @@ long long clang_Type_getOffsetOf(CXType PT, const char *S) {
   return CXTypeLayoutError_InvalidFieldName;
 }
 
+enum CXRefQualifierKind clang_Type_getCXXRefQualifier(CXType T) {
+  QualType QT = GetQualType(T);
+  if (QT.isNull())
+    return CXRefQualifier_None;
+  const FunctionProtoType *FD = QT->getAs<FunctionProtoType>();
+  if (!FD)
+    return CXRefQualifier_None;
+  switch (FD->getRefQualifier()) {
+    case RQ_None:
+      return CXRefQualifier_None;
+    case RQ_LValue:
+      return CXRefQualifier_LValue;
+    case RQ_RValue:
+      return CXRefQualifier_RValue;
+  }
+  return CXRefQualifier_None;
+}
+
 unsigned clang_Cursor_isBitField(CXCursor C) {
   if (!clang_isDeclaration(C.kind))
     return 0;
diff --git a/clang/tools/libclang/libclang.exports b/clang/tools/libclang/libclang.exports
index 6f6e392..9bf26c9 100644
--- a/clang/tools/libclang/libclang.exports
+++ b/clang/tools/libclang/libclang.exports
@@ -64,6 +64,7 @@ clang_Type_getAlignOf
 clang_Type_getClassType
 clang_Type_getSizeOf
 clang_Type_getOffsetOf
+clang_Type_getCXXRefQualifier
 clang_VerbatimBlockLineComment_getText
 clang_VerbatimLineComment_getText
 clang_HTMLTagComment_getAsString