[libclang] Add support for checking abstractness of records

This patch allows checking whether a C++ record declaration is abstract through
libclang and clang.cindex (Python).

Patch by Johann Klähn!

Differential Revision: https://reviews.llvm.org/D36952

llvm-svn: 320748

2 files changed, 42 insertions, 0 deletions

diff --git a/clang/bindings/python/clang/cindex.py b/clang/bindings/python/clang/cindex.py
index d72dd14ef9f3..6cdb10ef081c 100644
--- a/clang/bindings/python/clang/cindex.py
+++ b/clang/bindings/python/clang/cindex.py
@@ -1479,6 +1479,18 @@ class Cursor(Structure):
         """
         return conf.lib.clang_CXXMethod_isVirtual(self)
 
+    def is_abstract_record(self):
+        """Returns True if the cursor refers to a C++ record declaration
+        that has pure virtual member functions.
+        """
+        return conf.lib.clang_CXXRecord_isAbstract(self)
+
+    def is_abstract_record(self):
+        """Returns True if the cursor refers to a C++ record declaration
+        that has pure virtual member functions.
+        """
+        return conf.lib.clang_CXXRecord_isAbstract(self)
+
     def is_scoped_enum(self):
         """Returns True if the cursor refers to a scoped enum declaration.
         """
@@ -3401,6 +3413,14 @@ functionList = [
    [Cursor],
    bool),
 
+  ("clang_CXXRecord_isAbstract",
+   [Cursor],
+   bool),
+
+  ("clang_CXXRecord_isAbstract",
+   [Cursor],
+   bool),
+
   ("clang_EnumDecl_isScoped",
    [Cursor],
    bool),
diff --git a/clang/bindings/python/tests/cindex/test_cursor.py b/clang/bindings/python/tests/cindex/test_cursor.py
index 41ef62757ac3..80f023912ac7 100644
--- a/clang/bindings/python/tests/cindex/test_cursor.py
+++ b/clang/bindings/python/tests/cindex/test_cursor.py
@@ -275,6 +275,28 @@ class TestCursor(unittest.TestCase):
         self.assertTrue(foo.is_virtual_method())
         self.assertFalse(bar.is_virtual_method())
 
+    def test_is_abstract_record(self):
+        """Ensure Cursor.is_abstract_record works."""
+        source = 'struct X { virtual void x() = 0; }; struct Y : X { void x(); };'
+        tu = get_tu(source, lang='cpp')
+
+        cls = get_cursor(tu, 'X')
+        self.assertTrue(cls.is_abstract_record())
+
+        cls = get_cursor(tu, 'Y')
+        self.assertFalse(cls.is_abstract_record())
+
+    def test_is_abstract_record(self):
+        """Ensure Cursor.is_abstract_record works."""
+        source = 'struct X { virtual void x() = 0; }; struct Y : X { void x(); };'
+        tu = get_tu(source, lang='cpp')
+
+        cls = get_cursor(tu, 'X')
+        self.assertTrue(cls.is_abstract_record())
+
+        cls = get_cursor(tu, 'Y')
+        self.assertFalse(cls.is_abstract_record())
+
     def test_is_scoped_enum(self):
         """Ensure Cursor.is_scoped_enum works."""
         source = 'class X {}; enum RegularEnum {}; enum class ScopedEnum {};'