1 files changed, 107 insertions, 0 deletions
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFDeclContext.h b/lldb/source/Plugins/SymbolFile/DWARF/DWARFDeclContext.h
new file mode 100644
index 00000000000..85c97f1c68f
--- /dev/null
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFDeclContext.h
@@ -0,0 +1,107 @@
+//===-- DWARFDeclContext.h --------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SymbolFileDWARF_DWARFDeclContext_h_
+#define SymbolFileDWARF_DWARFDeclContext_h_
+
+// C Includes
+// C++ Includes
+#include <string>
+#include <vector>
+// Other libraries and framework includes
+#include "lldb/Core/ConstString.h"
+// Project includes
+#include "DWARFDefines.h"
+
+//----------------------------------------------------------------------
+// DWARFDeclContext
+//
+// A class that represents a declaration context all the way down to a
+// DIE. This is useful when trying to find a DIE in one DWARF to a DIE
+// in another DWARF file.
+//----------------------------------------------------------------------
+
+class DWARFDeclContext
+{
+public:
+    struct Entry
+    {
+        Entry () :
+            tag(0),
+            name(NULL)
+        {
+        }
+        Entry (dw_tag_t t, const char *n) :
+            tag(t),
+            name(n)
+        {
+        }
+
+        bool
+        NameMatches (const Entry& rhs) const
+        {
+            if (name && rhs.name)
+                return strcmp(name, rhs.name) == 0;
+            return name == NULL && rhs.name == NULL;
+        }
+
+        // Test operator
+        operator bool() const
+        {
+            return tag != 0;
+        }
+
+        dw_tag_t tag;
+        const char *name;
+    };
+
+    DWARFDeclContext () :
+        m_entries()
+    {
+    }
+
+    void
+    AppendDeclContext (dw_tag_t tag, const char *name)
+    {
+        m_entries.push_back(Entry(tag, name));
+    }
+
+    bool
+    operator ==(const DWARFDeclContext& rhs) const;
+
+    uint32_t
+    GetSize() const
+    {
+        return m_entries.size();
+    }
+
+    Entry &
+    operator[] (uint32_t idx)
+    {
+        // "idx" must be valid
+        return m_entries[idx];
+    }
+
+    const Entry &
+    operator[] (uint32_t idx) const
+    {
+        // "idx" must be valid
+        return m_entries[idx];
+    }
+
+    const char *
+    GetQualifiedName () const;
+
+protected:
+    typedef std::vector<Entry> collection;
+    collection m_entries;
+    mutable std::string m_qualified_name;
+};
+
+#endif  // SymbolFileDWARF_DWARFDeclContext_h_