libclang: add a function to check whether a member function is pure virtual

Patch by Seth Fowler.

llvm-svn: 182139

1 files changed, 14 insertions, 0 deletions

diff --git a/clang/tools/libclang/CIndex.cpp b/clang/tools/libclang/CIndex.cpp
index db7faabbee3..bd20800993b 100644
--- a/clang/tools/libclang/CIndex.cpp
+++ b/clang/tools/libclang/CIndex.cpp
@@ -6118,6 +6118,20 @@ CXFile clang_Module_getTopLevelHeader(CXTranslationUnit TU,
 //===----------------------------------------------------------------------===//
 
 extern "C" {
+unsigned clang_CXXMethod_isPureVirtual(CXCursor C) {
+  if (!clang_isDeclaration(C.kind))
+    return 0;
+
+  const CXXMethodDecl *Method = 0;
+  const Decl *D = cxcursor::getCursorDecl(C);
+  if (const FunctionTemplateDecl *FunTmpl =
+          dyn_cast_or_null<FunctionTemplateDecl>(D))
+    Method = dyn_cast<CXXMethodDecl>(FunTmpl->getTemplatedDecl());
+  else
+    Method = dyn_cast_or_null<CXXMethodDecl>(D);
+  return (Method && Method->isVirtual() && Method->isPure()) ? 1 : 0;
+}
+
 unsigned clang_CXXMethod_isStatic(CXCursor C) {
   if (!clang_isDeclaration(C.kind))
     return 0;