Remove Java 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 Java 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/D54059

llvm-svn: 346158

5 files changed, 0 insertions, 373 deletions

diff --git a/lldb/source/Plugins/Language/Java/CMakeLists.txt b/lldb/source/Plugins/Language/Java/CMakeLists.txt
deleted file mode 100644
index f0cbcd8d3f5..00000000000
--- a/lldb/source/Plugins/Language/Java/CMakeLists.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-add_lldb_library(lldbPluginJavaLanguage PLUGIN
-  JavaFormatterFunctions.cpp
-  JavaLanguage.cpp
-
-  LINK_LIBS
-    lldbCore
-    lldbDataFormatters
-    lldbSymbol
-    lldbTarget
-  LINK_COMPONENTS
-    Support
-)
diff --git a/lldb/source/Plugins/Language/Java/JavaFormatterFunctions.cpp b/lldb/source/Plugins/Language/Java/JavaFormatterFunctions.cpp
deleted file mode 100644
index 498795c90be..00000000000
--- a/lldb/source/Plugins/Language/Java/JavaFormatterFunctions.cpp
+++ /dev/null
@@ -1,167 +0,0 @@
-//===-- 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"
-#include "lldb/Symbol/JavaASTContext.h"
-
-using namespace lldb;
-using namespace lldb_private;
-using namespace lldb_private::formatters;
-
-namespace {
-
-class JavaArraySyntheticFrontEnd : public SyntheticChildrenFrontEnd {
-public:
-  JavaArraySyntheticFrontEnd(lldb::ValueObjectSP valobj_sp)
-      : SyntheticChildrenFrontEnd(*valobj_sp) {
-    if (valobj_sp)
-      Update();
-  }
-
-  size_t CalculateNumChildren() override {
-    ValueObjectSP valobj = GetDereferencedValueObject();
-    if (!valobj)
-      return 0;
-
-    CompilerType type = valobj->GetCompilerType();
-    uint32_t size = JavaASTContext::CalculateArraySize(type, *valobj);
-    if (size == UINT32_MAX)
-      return 0;
-    return size;
-  }
-
-  lldb::ValueObjectSP GetChildAtIndex(size_t idx) override {
-    ValueObjectSP valobj = GetDereferencedValueObject();
-    if (!valobj)
-      return nullptr;
-
-    ProcessSP process_sp = valobj->GetProcessSP();
-    if (!process_sp)
-      return nullptr;
-
-    CompilerType type = valobj->GetCompilerType();
-    CompilerType element_type = type.GetArrayElementType();
-    lldb::addr_t address =
-        valobj->GetAddressOf() +
-        JavaASTContext::CalculateArrayElementOffset(type, idx);
-
-    Status error;
-    size_t byte_size = element_type.GetByteSize(nullptr);
-    DataBufferSP buffer_sp(new DataBufferHeap(byte_size, 0));
-    size_t bytes_read = process_sp->ReadMemory(address, buffer_sp->GetBytes(),
-                                               byte_size, error);
-    if (error.Fail() || byte_size != bytes_read)
-      return nullptr;
-
-    StreamString name;
-    name.Printf("[%" PRIu64 "]", (uint64_t)idx);
-    DataExtractor data(buffer_sp, process_sp->GetByteOrder(),
-                       process_sp->GetAddressByteSize());
-    return CreateValueObjectFromData(
-        name.GetString(), data, valobj->GetExecutionContextRef(), element_type);
-  }
-
-  bool Update() override { return false; }
-
-  bool MightHaveChildren() override { return true; }
-
-  size_t GetIndexOfChildWithName(const ConstString &name) override {
-    return ExtractIndexFromString(name.GetCString());
-  }
-
-private:
-  ValueObjectSP GetDereferencedValueObject() {
-    if (!m_backend.IsPointerOrReferenceType())
-      return m_backend.GetSP();
-
-    Status error;
-    return m_backend.Dereference(error);
-  }
-};
-
-} // end of anonymous namespace
-
-bool lldb_private::formatters::JavaStringSummaryProvider(
-    ValueObject &valobj, Stream &stream, const TypeSummaryOptions &opts) {
-  if (valobj.IsPointerOrReferenceType()) {
-    Status 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;
-}
-
-bool lldb_private::formatters::JavaArraySummaryProvider(
-    ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
-  if (valobj.IsPointerOrReferenceType()) {
-    Status error;
-    ValueObjectSP deref = valobj.Dereference(error);
-    if (error.Fail())
-      return false;
-    return JavaArraySummaryProvider(*deref, stream, options);
-  }
-
-  CompilerType type = valobj.GetCompilerType();
-  uint32_t size = JavaASTContext::CalculateArraySize(type, valobj);
-  if (size == UINT32_MAX)
-    return false;
-  stream.Printf("[%u]{...}", size);
-  return true;
-}
-
-SyntheticChildrenFrontEnd *
-lldb_private::formatters::JavaArraySyntheticFrontEndCreator(
-    CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) {
-  return valobj_sp ? new JavaArraySyntheticFrontEnd(valobj_sp) : nullptr;
-}
diff --git a/lldb/source/Plugins/Language/Java/JavaFormatterFunctions.h b/lldb/source/Plugins/Language/Java/JavaFormatterFunctions.h
deleted file mode 100644
index d1983429529..00000000000
--- a/lldb/source/Plugins/Language/Java/JavaFormatterFunctions.h
+++ /dev/null
@@ -1,35 +0,0 @@
-//===-- JavaFormatterFunctions.h---------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef liblldb_JavaFormatterFunctions_h_
-#define liblldb_JavaFormatterFunctions_h_
-
-// C Includes
-// C++ Includes
-// Other libraries and framework includes
-// Project includes
-#include "lldb/lldb-forward.h"
-
-namespace lldb_private {
-namespace formatters {
-
-bool JavaStringSummaryProvider(ValueObject &valobj, Stream &stream,
-                               const TypeSummaryOptions &options);
-
-bool JavaArraySummaryProvider(ValueObject &valobj, Stream &stream,
-                              const TypeSummaryOptions &options);
-
-SyntheticChildrenFrontEnd *
-JavaArraySyntheticFrontEndCreator(CXXSyntheticChildren *,
-                                  lldb::ValueObjectSP valobj_sp);
-
-} // namespace formatters
-} // namespace lldb_private
-
-#endif // liblldb_JavaFormatterFunctions_h_
diff --git a/lldb/source/Plugins/Language/Java/JavaLanguage.cpp b/lldb/source/Plugins/Language/Java/JavaLanguage.cpp
deleted file mode 100644
index 634ae4caf4b..00000000000
--- a/lldb/source/Plugins/Language/Java/JavaLanguage.cpp
+++ /dev/null
@@ -1,105 +0,0 @@
-//===-- JavaLanguage.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
-#include <string.h>
-// C++ Includes
-#include <functional>
-#include <mutex>
-
-// Other libraries and framework includes
-#include "llvm/ADT/StringRef.h"
-#include "llvm/Support/Threading.h"
-
-// Project includes
-#include "JavaFormatterFunctions.h"
-#include "JavaLanguage.h"
-#include "lldb/Core/PluginManager.h"
-#include "lldb/DataFormatters/DataVisualization.h"
-#include "lldb/DataFormatters/FormattersHelpers.h"
-#include "lldb/Symbol/JavaASTContext.h"
-#include "lldb/Utility/ConstString.h"
-
-using namespace lldb;
-using namespace lldb_private;
-using namespace lldb_private::formatters;
-
-void JavaLanguage::Initialize() {
-  PluginManager::RegisterPlugin(GetPluginNameStatic(), "Java Language",
-                                CreateInstance);
-}
-
-void JavaLanguage::Terminate() {
-  PluginManager::UnregisterPlugin(CreateInstance);
-}
-
-lldb_private::ConstString JavaLanguage::GetPluginNameStatic() {
-  static ConstString g_name("Java");
-  return g_name;
-}
-
-lldb_private::ConstString JavaLanguage::GetPluginName() {
-  return GetPluginNameStatic();
-}
-
-uint32_t JavaLanguage::GetPluginVersion() { return 1; }
-
-Language *JavaLanguage::CreateInstance(lldb::LanguageType language) {
-  if (language == eLanguageTypeJava)
-    return new JavaLanguage();
-  return nullptr;
-}
-
-bool JavaLanguage::IsNilReference(ValueObject &valobj) {
-  if (!valobj.GetCompilerType().IsReferenceType())
-    return false;
-
-  // If we failed to read the value then it is not a nil reference.
-  return valobj.GetValueAsUnsigned(UINT64_MAX) == 0;
-}
-
-lldb::TypeCategoryImplSP JavaLanguage::GetFormatters() {
-  static llvm::once_flag g_initialize;
-  static TypeCategoryImplSP g_category;
-
-  llvm::call_once(g_initialize, [this]() -> void {
-    DataVisualization::Categories::GetCategory(GetPluginName(), g_category);
-    if (g_category) {
-      llvm::StringRef array_regexp("^.*\\[\\]&?$");
-
-      lldb::TypeSummaryImplSP string_summary_sp(new CXXFunctionSummaryFormat(
-          TypeSummaryImpl::Flags().SetDontShowChildren(true),
-          lldb_private::formatters::JavaStringSummaryProvider,
-          "java.lang.String summary provider"));
-      g_category->GetTypeSummariesContainer()->Add(
-          ConstString("java::lang::String"), string_summary_sp);
-
-      lldb::TypeSummaryImplSP array_summary_sp(new CXXFunctionSummaryFormat(
-          TypeSummaryImpl::Flags().SetDontShowChildren(true),
-          lldb_private::formatters::JavaArraySummaryProvider,
-          "Java array summary provider"));
-      g_category->GetRegexTypeSummariesContainer()->Add(
-          RegularExpressionSP(new RegularExpression(array_regexp)),
-          array_summary_sp);
-
-#ifndef LLDB_DISABLE_PYTHON
-      AddCXXSynthetic(
-          g_category,
-          lldb_private::formatters::JavaArraySyntheticFrontEndCreator,
-          "Java array synthetic children", ConstString(array_regexp),
-          SyntheticChildren::Flags().SetCascades(true), true);
-#endif
-    }
-  });
-  return g_category;
-}
-
-bool JavaLanguage::IsSourceFile(llvm::StringRef file_path) const {
-  return file_path.endswith(".java");
-}
diff --git a/lldb/source/Plugins/Language/Java/JavaLanguage.h b/lldb/source/Plugins/Language/Java/JavaLanguage.h
deleted file mode 100644
index a16ea9975b8..00000000000
--- a/lldb/source/Plugins/Language/Java/JavaLanguage.h
+++ /dev/null
@@ -1,54 +0,0 @@
-//===-- JavaLanguage.h ------------------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef liblldb_JavaLanguage_h_
-#define liblldb_JavaLanguage_h_
-
-// C Includes
-// C++ Includes
-#include <vector>
-
-// Other libraries and framework includes
-#include "llvm/ADT/StringRef.h"
-
-// Project includes
-#include "lldb/Target/Language.h"
-#include "lldb/Utility/ConstString.h"
-#include "lldb/lldb-private.h"
-
-namespace lldb_private {
-
-class JavaLanguage : public Language {
-public:
-  lldb::LanguageType GetLanguageType() const override {
-    return lldb::eLanguageTypeJava;
-  }
-
-  static void Initialize();
-
-  static void Terminate();
-
-  static lldb_private::Language *CreateInstance(lldb::LanguageType language);
-
-  static lldb_private::ConstString GetPluginNameStatic();
-
-  ConstString GetPluginName() override;
-
-  uint32_t GetPluginVersion() override;
-
-  bool IsNilReference(ValueObject &valobj) override;
-
-  lldb::TypeCategoryImplSP GetFormatters() override;
-
-  bool IsSourceFile(llvm::StringRef file_path) const override;
-};
-
-} // namespace lldb_private
-
-#endif // liblldb_JavaLanguage_h_