1 files changed, 101 insertions, 0 deletions
diff --git a/lldb/source/Target/Language.cpp b/lldb/source/Target/Language.cpp
new file mode 100644
index 00000000000..b7a88d16bda
--- /dev/null
+++ b/lldb/source/Target/Language.cpp
@@ -0,0 +1,101 @@
+//===-- Language.cpp -------------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include <functional>
+#include <map>
+
+#include "lldb/Target/Language.h"
+
+#include "lldb/Host/Mutex.h"
+#include "lldb/Core/PluginManager.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+typedef std::unique_ptr<Language> LanguageUP;
+typedef std::map<lldb::LanguageType, LanguageUP> LanguagesMap;
+
+static LanguagesMap&
+GetLanguagesMap ()
+{
+    static LanguagesMap *g_map = nullptr;
+    static std::once_flag g_initialize;
+    
+    std::call_once(g_initialize, [] {
+        g_map = new LanguagesMap(); // NOTE: INTENTIONAL LEAK due to global destructor chain
+    });
+    
+    return *g_map;
+}
+static Mutex&
+GetLanguagesMutex ()
+{
+    static Mutex *g_mutex = nullptr;
+    static std::once_flag g_initialize;
+    
+    std::call_once(g_initialize, [] {
+        g_mutex = new Mutex(); // NOTE: INTENTIONAL LEAK due to global destructor chain
+    });
+    
+    return *g_mutex;
+}
+
+Language*
+Language::FindPlugin (lldb::LanguageType language)
+{
+    Mutex::Locker locker(GetLanguagesMutex());
+    LanguagesMap& map(GetLanguagesMap());
+    auto iter = map.find(language), end = map.end();
+    if (iter != end)
+        return iter->second.get();
+    
+    Language *language_ptr = nullptr;
+    LanguageCreateInstance create_callback;
+    
+    for (uint32_t idx = 0;
+         (create_callback = PluginManager::GetLanguageCreateCallbackAtIndex(idx)) != nullptr;
+         ++idx)
+    {
+        language_ptr = create_callback(language);
+        
+        if (language_ptr)
+        {
+            map[language] = std::unique_ptr<Language>(language_ptr);
+            return language_ptr;
+        }
+    }
+    
+    return nullptr;
+}
+
+void
+Language::ForEach (std::function<bool(Language*)> callback)
+{
+    Mutex::Locker locker(GetLanguagesMutex());
+    LanguagesMap& map(GetLanguagesMap());
+    for (const auto& entry : map)
+    {
+        if (!callback(entry.second.get()))
+            break;
+    }
+}
+
+//----------------------------------------------------------------------
+// Constructor
+//----------------------------------------------------------------------
+Language::Language()
+{
+}
+
+//----------------------------------------------------------------------
+// Destructor
+//----------------------------------------------------------------------
+Language::~Language()
+{
+}