[PDB] Introduce `MSVCUndecoratedNameParser`

This patch introduces the simple MSVCUndecoratedNameParser. It is needed for
parsing names of PDB symbols corresponding to template instantiations. For
example, for the name `operator<<A>'::`2'::B::operator> we can't just split the
name with :: (as it is implemented for now) to retrieve its scopes. This parser
processes such names in a more correct way.

Differential Revision: https://reviews.llvm.org/D52461

1 files changed, 8 insertions, 1 deletions

diff --git a/lldb/unittests/Language/CPlusPlus/CPlusPlusLanguageTest.cpp b/lldb/unittests/Language/CPlusPlus/CPlusPlusLanguageTest.cpp
index 81d3ac51fd9..ed9b6b08b76 100644
--- a/lldb/unittests/Language/CPlusPlus/CPlusPlusLanguageTest.cpp
+++ b/lldb/unittests/Language/CPlusPlus/CPlusPlusLanguageTest.cpp
@@ -138,7 +138,14 @@ TEST(CPlusPlusLanguage, ExtractContextAndIdentifier) {
       {"std::vector<Class, std::allocator<Class>>"
        "::_M_emplace_back_aux<Class const&>",
        "std::vector<Class, std::allocator<Class>>",
-       "_M_emplace_back_aux<Class const&>"}};
+       "_M_emplace_back_aux<Class const&>"},
+      {"`anonymous namespace'::foo", "`anonymous namespace'", "foo"},
+      {"`operator<<A>'::`2'::B<0>::operator>",
+       "`operator<<A>'::`2'::B<0>",
+       "operator>"},
+      {"`anonymous namespace'::S::<<::__l2::Foo",
+       "`anonymous namespace'::S::<<::__l2",
+       "Foo"}};
 
   llvm::StringRef context, basename;
   for (const auto &test : test_cases) {