Initial checkin of lldb code from internal Apple repo.

llvm-svn: 105619

lldb/source/Utility/StringExtractorGDBRemote.cpp

@@ -0,0 +1,89 @@
+//===-- StringExtractorGDBRemote.cpp ----------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "StringExtractorGDBRemote.h"
+
+// C Includes
+// C++ Includes
+// Other libraries and framework includes
+// Project includes
+
+
+
+StringExtractorGDBRemote::Type
+StringExtractorGDBRemote::GetType () const
+{
+    if (m_packet.empty())
+        return eUnsupported;
+
+    switch (m_packet[0])
+    {
+    case 'E':
+        if (m_packet.size() == 3 &&
+            isxdigit(m_packet[1]) &&
+            isxdigit(m_packet[2]))
+            return eError;
+        break;
+
+    case 'O':
+        if (m_packet.size() == 2 && m_packet[1] == 'K')
+            return eOK;
+        break;
+
+    case '+':
+        if (m_packet.size() == 1)
+            return eAck;
+        break;
+
+    case '-':
+        if (m_packet.size() == 1)
+            return eNack;
+        break;
+    }
+    return eResponse;
+}
+
+bool
+StringExtractorGDBRemote::IsOKPacket() const
+{
+    return GetType () == eOK;
+}
+
+
+bool
+StringExtractorGDBRemote::IsUnsupportedPacket() const
+{
+    return GetType () == eUnsupported;
+}
+
+bool
+StringExtractorGDBRemote::IsNormalPacket() const
+{
+    return GetType () == eResponse;
+}
+
+bool
+StringExtractorGDBRemote::IsErrorPacket() const
+{
+    return GetType () == eError &&
+           m_packet.size() == 3 &&
+           isxdigit(m_packet[1]) &&
+           isxdigit(m_packet[2]);
+}
+
+uint8_t
+StringExtractorGDBRemote::GetError ()
+{
+    if (GetType() == eError)
+    {
+        SetFilePos(1);
+        return GetHexU8(255);
+    }
+    return 0;
+}