[libclang] Support for querying whether an enum is scoped

This commit allows checking whether an enum declaration is scoped
through libclang and clang.cindex (Python).

Patch by Johann Klähn!

Differential Revision: https://reviews.llvm.org/D35187

2 files changed, 25 insertions, 0 deletions

diff --git a/clang/bindings/python/clang/cindex.py b/clang/bindings/python/clang/cindex.py
index 1ca58049190..236803a9ab9 100644
--- a/clang/bindings/python/clang/cindex.py
+++ b/clang/bindings/python/clang/cindex.py
@@ -1478,6 +1478,11 @@ class Cursor(Structure):
         """
         return conf.lib.clang_CXXMethod_isVirtual(self)
 
+    def is_scoped_enum(self):
+        """Returns True if the cursor refers to a scoped enum declaration.
+        """
+        return conf.lib.clang_EnumDecl_isScoped(self)
+
     def get_definition(self):
         """
         If the cursor is a reference to a declaration or a declaration of
@@ -3314,6 +3319,10 @@ functionList = [
    [Cursor],
    bool),
 
+  ("clang_EnumDecl_isScoped",
+   [Cursor],
+   bool),
+
   ("clang_defaultDiagnosticDisplayOptions",
    [],
    c_uint),
diff --git a/clang/bindings/python/tests/cindex/test_cursor.py b/clang/bindings/python/tests/cindex/test_cursor.py
index 8103e96df4f..4787ea931e1 100644
--- a/clang/bindings/python/tests/cindex/test_cursor.py
+++ b/clang/bindings/python/tests/cindex/test_cursor.py
@@ -255,6 +255,22 @@ def test_is_virtual_method():
     assert foo.is_virtual_method()
     assert not bar.is_virtual_method()
 
+def test_is_scoped_enum():
+    """Ensure Cursor.is_scoped_enum works."""
+    source = 'class X {}; enum RegularEnum {}; enum class ScopedEnum {};'
+    tu = get_tu(source, lang='cpp')
+
+    cls = get_cursor(tu, 'X')
+    regular_enum = get_cursor(tu, 'RegularEnum')
+    scoped_enum = get_cursor(tu, 'ScopedEnum')
+    assert cls is not None
+    assert regular_enum is not None
+    assert scoped_enum is not None
+
+    assert not cls.is_scoped_enum()
+    assert not regular_enum.is_scoped_enum()
+    assert scoped_enum.is_scoped_enum()
+
 def test_underlying_type():
     tu = get_tu('typedef int foo;')
     typedef = get_cursor(tu, 'foo')