Add a set of new plugins to handle Java debugging

The purpose of these plugins is to make LLDB capable of debugging java
code JIT-ed by the android runtime.

Differential revision: http://reviews.llvm.org/D17616

llvm-svn: 262015

1 files changed, 71 insertions, 0 deletions

diff --git a/lldb/source/Plugins/Language/Java/JavaFormatterFunctions.cpp b/lldb/source/Plugins/Language/Java/JavaFormatterFunctions.cpp
new file mode 100644
index 00000000000..ab368b33fbc
--- /dev/null
+++ b/lldb/source/Plugins/Language/Java/JavaFormatterFunctions.cpp
@@ -0,0 +1,71 @@
+//===-- JavaFormatterFunctions.cpp-------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// C Includes
+// C++ Includes
+// Other libraries and framework includes
+// Project includes
+#include "JavaFormatterFunctions.h"
+#include "lldb/DataFormatters/FormattersHelpers.h"
+#include "lldb/DataFormatters/StringPrinter.h"
+
+using namespace lldb;
+using namespace lldb_private;
+using namespace lldb_private::formatters;
+
+bool
+lldb_private::formatters::JavaStringSummaryProvider(ValueObject &valobj, Stream &stream, const TypeSummaryOptions &opts)
+{
+    if (valobj.IsPointerOrReferenceType())
+    {
+        Error error;
+        ValueObjectSP deref = valobj.Dereference(error);
+        if (error.Fail())
+            return false;
+        return JavaStringSummaryProvider(*deref, stream, opts);
+    }
+
+    ProcessSP process_sp = valobj.GetProcessSP();
+    if (!process_sp)
+        return false;
+
+    ConstString data_name("value");
+    ConstString length_name("count");
+
+    ValueObjectSP length_sp = valobj.GetChildMemberWithName(length_name, true);
+    ValueObjectSP data_sp = valobj.GetChildMemberWithName(data_name, true);
+    if (!data_sp || !length_sp)
+        return false;
+
+    bool success = false;
+    uint64_t length = length_sp->GetValueAsUnsigned(0, &success);
+    if (!success)
+        return false;
+
+    if (length == 0)
+    {
+        stream.Printf("\"\"");
+        return true;
+    }
+    lldb::addr_t valobj_addr = data_sp->GetAddressOf();
+
+    StringPrinter::ReadStringAndDumpToStreamOptions options(valobj);
+    options.SetLocation(valobj_addr);
+    options.SetProcessSP(process_sp);
+    options.SetStream(&stream);
+    options.SetSourceSize(length);
+    options.SetNeedsZeroTermination(false);
+    options.SetLanguage(eLanguageTypeJava);
+
+    if (StringPrinter::ReadStringAndDumpToStream<StringPrinter::StringElementType::UTF16>(options))
+        return true;
+
+    stream.Printf("Summary Unavailable");
+    return true;
+}