source/Plugins/Language/Java/JavaLanguage.cpp

   1 //===-- JavaLanguage.cpp ----------------------------------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 // C Includes
  11 #include <string.h>
  12 // C++ Includes
  13 #include <functional>
  14 #include <mutex>
  15
  16 // Other libraries and framework includes
  17 #include "llvm/ADT/StringRef.h"
  18
  19 // Project includes
  20 #include "JavaFormatterFunctions.h"
  21 #include "JavaLanguage.h"
  22 #include "lldb/Core/ConstString.h"
  23 #include "lldb/Core/PluginManager.h"
  24 #include "lldb/DataFormatters/DataVisualization.h"
  25 #include "lldb/DataFormatters/FormattersHelpers.h"
  26 #include "lldb/Symbol/JavaASTContext.h"
  27
  28 using namespace lldb;
  29 using namespace lldb_private;
  30 using namespace lldb_private::formatters;
  31
  32 void JavaLanguage::Initialize() {
  33   PluginManager::RegisterPlugin(GetPluginNameStatic(), "Java Language",
  34                                 CreateInstance);
  35 }
  36
  37 void JavaLanguage::Terminate() {
  38   PluginManager::UnregisterPlugin(CreateInstance);
  39 }
  40
  41 lldb_private::ConstString JavaLanguage::GetPluginNameStatic() {
  42   static ConstString g_name("Java");
  43   return g_name;
  44 }
  45
  46 lldb_private::ConstString JavaLanguage::GetPluginName() {
  47   return GetPluginNameStatic();
  48 }
  49
  50 uint32_t JavaLanguage::GetPluginVersion() { return 1; }
  51
  52 Language *JavaLanguage::CreateInstance(lldb::LanguageType language) {
  53   if (language == eLanguageTypeJava)
  54     return new JavaLanguage();
  55   return nullptr;
  56 }
  57
  58 bool JavaLanguage::IsNilReference(ValueObject &valobj) {
  59   if (!valobj.GetCompilerType().IsReferenceType())
  60     return false;
  61
  62   // If we failed to read the value then it is not a nil reference.
  63   return valobj.GetValueAsUnsigned(UINT64_MAX) == 0;
  64 }
  65
  66 lldb::TypeCategoryImplSP JavaLanguage::GetFormatters() {
  67   static std::once_flag g_initialize;
  68   static TypeCategoryImplSP g_category;
  69
  70   std::call_once(g_initialize, [this]() -> void {
  71     DataVisualization::Categories::GetCategory(GetPluginName(), g_category);
  72     if (g_category) {
  73       llvm::StringRef array_regexp("^.*\\[\\]&?$");
  74
  75       lldb::TypeSummaryImplSP string_summary_sp(new CXXFunctionSummaryFormat(
  76           TypeSummaryImpl::Flags().SetDontShowChildren(true),
  77           lldb_private::formatters::JavaStringSummaryProvider,
  78           "java.lang.String summary provider"));
  79       g_category->GetTypeSummariesContainer()->Add(
  80           ConstString("java::lang::String"), string_summary_sp);
  81
  82       lldb::TypeSummaryImplSP array_summary_sp(new CXXFunctionSummaryFormat(
  83           TypeSummaryImpl::Flags().SetDontShowChildren(true),
  84           lldb_private::formatters::JavaArraySummaryProvider,
  85           "Java array summary provider"));
  86       g_category->GetRegexTypeSummariesContainer()->Add(
  87           RegularExpressionSP(new RegularExpression(array_regexp)),
  88           array_summary_sp);
  89
  90 #ifndef LLDB_DISABLE_PYTHON
  91       AddCXXSynthetic(
  92           g_category,
  93           lldb_private::formatters::JavaArraySyntheticFrontEndCreator,
  94           "Java array synthetic children", ConstString(array_regexp),
  95           SyntheticChildren::Flags().SetCascades(true), true);
  96 #endif
  97     }
  98   });
  99   return g_category;
 100 }