Remove Go debugger plugin

In January Davide sent an e-mail to the mailing list to suggest removing
unmaintained language plugins such as Go and Java. The plan was to have
some cool down period to allow users to speak up, however after that the
plugins were never actually removed.

This patch removes the Go debugger plugin.

The plugin can be added again in the future if it is mature enough both
in terms of testing and maintenance commitment.

Discussion on the mailing list:
http://lists.llvm.org/pipermail/lldb-dev/2018-January/013171.html

Differential revision: https://reviews.llvm.org/D54057

llvm-svn: 346157

1 files changed, 0 insertions, 152 deletions

diff --git a/lldb/source/Plugins/Language/Go/GoFormatterFunctions.cpp b/lldb/source/Plugins/Language/Go/GoFormatterFunctions.cpp
deleted file mode 100644
index aac75205c6e..00000000000
--- a/lldb/source/Plugins/Language/Go/GoFormatterFunctions.cpp
+++ /dev/null
@@ -1,152 +0,0 @@
-//===-- GoFormatterFunctions.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
-#include <map>
-
-// Other libraries and framework includes
-// Project includes
-#include "GoFormatterFunctions.h"
-#include "lldb/DataFormatters/FormattersHelpers.h"
-#include "lldb/DataFormatters/StringPrinter.h"
-
-using namespace lldb;
-using namespace lldb_private;
-using namespace lldb_private::formatters;
-
-namespace {
-class GoSliceSyntheticFrontEnd : public SyntheticChildrenFrontEnd {
-public:
-  GoSliceSyntheticFrontEnd(ValueObject &valobj)
-      : SyntheticChildrenFrontEnd(valobj) {
-    Update();
-  }
-
-  ~GoSliceSyntheticFrontEnd() override = default;
-
-  size_t CalculateNumChildren() override { return m_len; }
-
-  lldb::ValueObjectSP GetChildAtIndex(size_t idx) override {
-    if (idx < m_len) {
-      ValueObjectSP &cached = m_children[idx];
-      if (!cached) {
-        StreamString idx_name;
-        idx_name.Printf("[%" PRIu64 "]", (uint64_t)idx);
-        lldb::addr_t object_at_idx = m_base_data_address;
-        object_at_idx += idx * m_type.GetByteSize(nullptr);
-        cached = CreateValueObjectFromAddress(
-            idx_name.GetString(), object_at_idx,
-            m_backend.GetExecutionContextRef(), m_type);
-      }
-      return cached;
-    }
-    return ValueObjectSP();
-  }
-
-  bool Update() override {
-    size_t old_count = m_len;
-
-    ConstString array_const_str("array");
-    ValueObjectSP array_sp =
-        m_backend.GetChildMemberWithName(array_const_str, true);
-    if (!array_sp) {
-      m_children.clear();
-      return old_count == 0;
-    }
-    m_type = array_sp->GetCompilerType().GetPointeeType();
-    m_base_data_address = array_sp->GetPointerValue();
-
-    ConstString len_const_str("len");
-    ValueObjectSP len_sp =
-        m_backend.GetChildMemberWithName(len_const_str, true);
-    if (len_sp) {
-      m_len = len_sp->GetValueAsUnsigned(0);
-      m_children.clear();
-    }
-
-    return old_count == m_len;
-  }
-
-  bool MightHaveChildren() override { return true; }
-
-  size_t GetIndexOfChildWithName(const ConstString &name) override {
-    return ExtractIndexFromString(name.AsCString());
-  }
-
-private:
-  CompilerType m_type;
-  lldb::addr_t m_base_data_address;
-  size_t m_len;
-  std::map<size_t, lldb::ValueObjectSP> m_children;
-};
-
-} // anonymous namespace
-
-bool lldb_private::formatters::GoStringSummaryProvider(
-    ValueObject &valobj, Stream &stream, const TypeSummaryOptions &opts) {
-  ProcessSP process_sp = valobj.GetProcessSP();
-  if (!process_sp)
-    return false;
-
-  if (valobj.IsPointerType()) {
-    Status err;
-    ValueObjectSP deref = valobj.Dereference(err);
-    if (!err.Success())
-      return false;
-    return GoStringSummaryProvider(*deref, stream, opts);
-  }
-
-  ConstString str_name("str");
-  ConstString len_name("len");
-
-  ValueObjectSP data_sp = valobj.GetChildMemberWithName(str_name, true);
-  ValueObjectSP len_sp = valobj.GetChildMemberWithName(len_name, true);
-  if (!data_sp || !len_sp)
-    return false;
-  bool success;
-  lldb::addr_t valobj_addr = data_sp->GetValueAsUnsigned(0, &success);
-
-  if (!success)
-    return false;
-
-  uint64_t length = len_sp->GetValueAsUnsigned(0);
-  if (length == 0) {
-    stream.Printf("\"\"");
-    return true;
-  }
-
-  StringPrinter::ReadStringAndDumpToStreamOptions options(valobj);
-  options.SetLocation(valobj_addr);
-  options.SetProcessSP(process_sp);
-  options.SetStream(&stream);
-  options.SetSourceSize(length);
-  options.SetNeedsZeroTermination(false);
-  options.SetLanguage(eLanguageTypeGo);
-
-  if (!StringPrinter::ReadStringAndDumpToStream<
-          StringPrinter::StringElementType::UTF8>(options)) {
-    stream.Printf("Summary Unavailable");
-    return true;
-  }
-
-  return true;
-}
-
-SyntheticChildrenFrontEnd *
-lldb_private::formatters::GoSliceSyntheticFrontEndCreator(
-    CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) {
-  if (!valobj_sp)
-    return nullptr;
-
-  lldb::ProcessSP process_sp(valobj_sp->GetProcessSP());
-  if (!process_sp)
-    return nullptr;
-  return new GoSliceSyntheticFrontEnd(*valobj_sp);
-}