[Symbol] Search symbols with name and type in a symbol file

Summary:
This patch adds possibility of searching a public symbol with name and type in
a symbol file, not only in a symtab. It is helpful when working with PE, because
PE's symtabs contain only imported / exported symbols only. Such a search is
required for e.g. evaluation of an expression that calls some function of
the debuggee.

Reviewers: zturner, asmith, labath, clayborg, espindola

Reviewed By: clayborg

Subscribers: davide, emaste, arichardson, aleksandr.urakov, jingham,
             lldb-commits, stella.stamenova

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D53368

1 files changed, 17 insertions, 0 deletions

diff --git a/lldb/unittests/SymbolFile/PDB/SymbolFilePDBTests.cpp b/lldb/unittests/SymbolFile/PDB/SymbolFilePDBTests.cpp
index 5ad4cff5b2e..32c7002a15c 100644
--- a/lldb/unittests/SymbolFile/PDB/SymbolFilePDBTests.cpp
+++ b/lldb/unittests/SymbolFile/PDB/SymbolFilePDBTests.cpp
@@ -620,3 +620,20 @@ TEST_F(SymbolFilePDBTests, TestNullName) {
   EXPECT_EQ(0u, num_results);
   EXPECT_EQ(0u, results.GetSize());
 }
+
+TEST_F(SymbolFilePDBTests, TestFindSymbolsWithNameAndType) {
+  FileSpec fspec(m_pdb_test_exe.c_str());
+  ArchSpec aspec("i686-pc-windows");
+  lldb::ModuleSP module = std::make_shared<Module>(fspec, aspec);
+
+  SymbolContextList sc_list;
+  EXPECT_EQ(1u,
+            module->FindSymbolsWithNameAndType(ConstString("?foo@@YAHH@Z"),
+                                               lldb::eSymbolTypeAny, sc_list));
+  EXPECT_EQ(1u, sc_list.GetSize());
+
+  SymbolContext sc;
+  EXPECT_TRUE(sc_list.GetContextAtIndex(0, sc));
+  EXPECT_STREQ("int foo(int)",
+               sc.GetFunctionName(Mangled::ePreferDemangled).AsCString());
+}