1 files changed, 885 insertions, 0 deletions

diff --git a/xbmc/utils/Variant.cpp b/xbmc/utils/Variant.cpp
new file mode 100644
index 0000000..97676f6
--- /dev/null
+++ b/xbmc/utils/Variant.cpp
@@ -0,0 +1,885 @@
+/*
+ *  Copyright (C) 2005-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#include "Variant.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <utility>
+
+#ifndef strtoll
+#ifdef TARGET_WINDOWS
+#define strtoll  _strtoi64
+#define strtoull _strtoui64
+#define wcstoll  _wcstoi64
+#define wcstoull _wcstoui64
+#else // TARGET_WINDOWS
+#if !defined(TARGET_DARWIN)
+#define strtoll(str, endptr, base)  (int64_t)strtod(str, endptr)
+#define strtoull(str, endptr, base) (uint64_t)strtod(str, endptr)
+#define wcstoll(str, endptr, base)  (int64_t)wcstod(str, endptr)
+#define wcstoull(str, endptr, base) (uint64_t)wcstod(str, endptr)
+#endif
+#endif // TARGET_WINDOWS
+#endif // strtoll
+
+std::string trimRight(const std::string &str)
+{
+  std::string tmp = str;
+  // find_last_not_of will return string::npos (which is defined as -1)
+  // or a value between 0 and size() - 1 => find_last_not_of() + 1 will
+  // always result in a valid index between 0 and size()
+  tmp.erase(tmp.find_last_not_of(" \n\r\t") + 1);
+
+  return tmp;
+}
+
+std::wstring trimRight(const std::wstring &str)
+{
+  std::wstring tmp = str;
+  // find_last_not_of will return string::npos (which is defined as -1)
+  // or a value between 0 and size() - 1 => find_last_not_of() + 1 will
+  // always result in a valid index between 0 and size()
+  tmp.erase(tmp.find_last_not_of(L" \n\r\t") + 1);
+
+  return tmp;
+}
+
+int64_t str2int64(const std::string &str, int64_t fallback /* = 0 */)
+{
+  char *end = NULL;
+  std::string tmp = trimRight(str);
+  int64_t result = strtoll(tmp.c_str(), &end, 0);
+  if (end == NULL || *end == '\0')
+    return result;
+
+  return fallback;
+}
+
+int64_t str2int64(const std::wstring &str, int64_t fallback /* = 0 */)
+{
+  wchar_t *end = NULL;
+  std::wstring tmp = trimRight(str);
+  int64_t result = wcstoll(tmp.c_str(), &end, 0);
+  if (end == NULL || *end == '\0')
+    return result;
+
+  return fallback;
+}
+
+uint64_t str2uint64(const std::string &str, uint64_t fallback /* = 0 */)
+{
+  char *end = NULL;
+  std::string tmp = trimRight(str);
+  uint64_t result = strtoull(tmp.c_str(), &end, 0);
+  if (end == NULL || *end == '\0')
+    return result;
+
+  return fallback;
+}
+
+uint64_t str2uint64(const std::wstring &str, uint64_t fallback /* = 0 */)
+{
+  wchar_t *end = NULL;
+  std::wstring tmp = trimRight(str);
+  uint64_t result = wcstoull(tmp.c_str(), &end, 0);
+  if (end == NULL || *end == '\0')
+    return result;
+
+  return fallback;
+}
+
+double str2double(const std::string &str, double fallback /* = 0.0 */)
+{
+  char *end = NULL;
+  std::string tmp = trimRight(str);
+  double result = strtod(tmp.c_str(), &end);
+  if (end == NULL || *end == '\0')
+    return result;
+
+  return fallback;
+}
+
+double str2double(const std::wstring &str, double fallback /* = 0.0 */)
+{
+  wchar_t *end = NULL;
+  std::wstring tmp = trimRight(str);
+  double result = wcstod(tmp.c_str(), &end);
+  if (end == NULL || *end == '\0')
+    return result;
+
+  return fallback;
+}
+
+CVariant::CVariant()
+  : CVariant(VariantTypeNull)
+{
+}
+
+CVariant CVariant::ConstNullVariant = CVariant::VariantTypeConstNull;
+CVariant::VariantArray CVariant::EMPTY_ARRAY;
+CVariant::VariantMap CVariant::EMPTY_MAP;
+
+CVariant::CVariant(VariantType type)
+{
+  m_type = type;
+
+  switch (type)
+  {
+    case VariantTypeInteger:
+      m_data.integer = 0;
+      break;
+    case VariantTypeUnsignedInteger:
+      m_data.unsignedinteger = 0;
+      break;
+    case VariantTypeBoolean:
+      m_data.boolean = false;
+      break;
+    case VariantTypeDouble:
+      m_data.dvalue = 0.0;
+      break;
+    case VariantTypeString:
+      m_data.string = new std::string();
+      break;
+    case VariantTypeWideString:
+      m_data.wstring = new std::wstring();
+      break;
+    case VariantTypeArray:
+      m_data.array = new VariantArray();
+      break;
+    case VariantTypeObject:
+      m_data.map = new VariantMap();
+      break;
+    default:
+#ifndef TARGET_WINDOWS_STORE // this corrupts the heap in Win10 UWP version
+      memset(&m_data, 0, sizeof(m_data));
+#endif
+      break;
+  }
+}
+
+CVariant::CVariant(int integer)
+{
+  m_type = VariantTypeInteger;
+  m_data.integer = integer;
+}
+
+CVariant::CVariant(int64_t integer)
+{
+  m_type = VariantTypeInteger;
+  m_data.integer = integer;
+}
+
+CVariant::CVariant(unsigned int unsignedinteger)
+{
+  m_type = VariantTypeUnsignedInteger;
+  m_data.unsignedinteger = unsignedinteger;
+}
+
+CVariant::CVariant(uint64_t unsignedinteger)
+{
+  m_type = VariantTypeUnsignedInteger;
+  m_data.unsignedinteger = unsignedinteger;
+}
+
+CVariant::CVariant(double value)
+{
+  m_type = VariantTypeDouble;
+  m_data.dvalue = value;
+}
+
+CVariant::CVariant(float value)
+{
+  m_type = VariantTypeDouble;
+  m_data.dvalue = (double)value;
+}
+
+CVariant::CVariant(bool boolean)
+{
+  m_type = VariantTypeBoolean;
+  m_data.boolean = boolean;
+}
+
+CVariant::CVariant(const char *str)
+{
+  m_type = VariantTypeString;
+  m_data.string = new std::string(str);
+}
+
+CVariant::CVariant(const char *str, unsigned int length)
+{
+  m_type = VariantTypeString;
+  m_data.string = new std::string(str, length);
+}
+
+CVariant::CVariant(const std::string &str)
+{
+  m_type = VariantTypeString;
+  m_data.string = new std::string(str);
+}
+
+CVariant::CVariant(std::string &&str)
+{
+  m_type = VariantTypeString;
+  m_data.string = new std::string(std::move(str));
+}
+
+CVariant::CVariant(const wchar_t *str)
+{
+  m_type = VariantTypeWideString;
+  m_data.wstring = new std::wstring(str);
+}
+
+CVariant::CVariant(const wchar_t *str, unsigned int length)
+{
+  m_type = VariantTypeWideString;
+  m_data.wstring = new std::wstring(str, length);
+}
+
+CVariant::CVariant(const std::wstring &str)
+{
+  m_type = VariantTypeWideString;
+  m_data.wstring = new std::wstring(str);
+}
+
+CVariant::CVariant(std::wstring &&str)
+{
+  m_type = VariantTypeWideString;
+  m_data.wstring = new std::wstring(std::move(str));
+}
+
+CVariant::CVariant(const std::vector<std::string> &strArray)
+{
+  m_type = VariantTypeArray;
+  m_data.array = new VariantArray;
+  m_data.array->reserve(strArray.size());
+  for (const auto& item : strArray)
+    m_data.array->push_back(CVariant(item));
+}
+
+CVariant::CVariant(const std::map<std::string, std::string> &strMap)
+{
+  m_type = VariantTypeObject;
+  m_data.map = new VariantMap;
+  for (std::map<std::string, std::string>::const_iterator it = strMap.begin(); it != strMap.end(); ++it)
+    m_data.map->insert(make_pair(it->first, CVariant(it->second)));
+}
+
+CVariant::CVariant(const std::map<std::string, CVariant> &variantMap)
+{
+  m_type = VariantTypeObject;
+  m_data.map = new VariantMap(variantMap.begin(), variantMap.end());
+}
+
+CVariant::CVariant(const CVariant &variant)
+{
+  m_type = VariantTypeNull;
+  *this = variant;
+}
+
+CVariant::CVariant(CVariant&& rhs)
+{
+  //Set this so that operator= don't try and run cleanup
+  //when we're not initialized.
+  m_type = VariantTypeNull;
+
+  *this = std::move(rhs);
+}
+
+CVariant::~CVariant()
+{
+  cleanup();
+}
+
+void CVariant::cleanup()
+{
+  switch (m_type)
+  {
+  case VariantTypeString:
+    delete m_data.string;
+    m_data.string = nullptr;
+    break;
+
+  case VariantTypeWideString:
+    delete m_data.wstring;
+    m_data.wstring = nullptr;
+    break;
+
+  case VariantTypeArray:
+    delete m_data.array;
+    m_data.array = nullptr;
+    break;
+
+  case VariantTypeObject:
+    delete m_data.map;
+    m_data.map = nullptr;
+    break;
+  default:
+    break;
+  }
+  m_type = VariantTypeNull;
+}
+
+bool CVariant::isInteger() const
+{
+  return isSignedInteger() || isUnsignedInteger();
+}
+
+bool CVariant::isSignedInteger() const
+{
+  return m_type == VariantTypeInteger;
+}
+
+bool CVariant::isUnsignedInteger() const
+{
+  return m_type == VariantTypeUnsignedInteger;
+}
+
+bool CVariant::isBoolean() const
+{
+  return m_type == VariantTypeBoolean;
+}
+
+bool CVariant::isDouble() const
+{
+  return m_type == VariantTypeDouble;
+}
+
+bool CVariant::isString() const
+{
+  return m_type == VariantTypeString;
+}
+
+bool CVariant::isWideString() const
+{
+  return m_type == VariantTypeWideString;
+}
+
+bool CVariant::isArray() const
+{
+  return m_type == VariantTypeArray;
+}
+
+bool CVariant::isObject() const
+{
+  return m_type == VariantTypeObject;
+}
+
+bool CVariant::isNull() const
+{
+  return m_type == VariantTypeNull || m_type == VariantTypeConstNull;
+}
+
+CVariant::VariantType CVariant::type() const
+{
+  return m_type;
+}
+
+int64_t CVariant::asInteger(int64_t fallback) const
+{
+  switch (m_type)
+  {
+    case VariantTypeInteger:
+      return m_data.integer;
+    case VariantTypeUnsignedInteger:
+      return (int64_t)m_data.unsignedinteger;
+    case VariantTypeDouble:
+      return (int64_t)m_data.dvalue;
+    case VariantTypeString:
+      return str2int64(*m_data.string, fallback);
+    case VariantTypeWideString:
+      return str2int64(*m_data.wstring, fallback);
+    default:
+      return fallback;
+  }
+
+  return fallback;
+}
+
+int32_t CVariant::asInteger32(int32_t fallback) const
+{
+  return static_cast<int32_t>(asInteger(fallback));
+}
+
+uint64_t CVariant::asUnsignedInteger(uint64_t fallback) const
+{
+  switch (m_type)
+  {
+    case VariantTypeUnsignedInteger:
+      return m_data.unsignedinteger;
+    case VariantTypeInteger:
+      return (uint64_t)m_data.integer;
+    case VariantTypeDouble:
+      return (uint64_t)m_data.dvalue;
+    case VariantTypeString:
+      return str2uint64(*m_data.string, fallback);
+    case VariantTypeWideString:
+      return str2uint64(*m_data.wstring, fallback);
+    default:
+      return fallback;
+  }
+
+  return fallback;
+}
+
+uint32_t CVariant::asUnsignedInteger32(uint32_t fallback) const
+{
+  return static_cast<uint32_t>(asUnsignedInteger(fallback));
+}
+
+double CVariant::asDouble(double fallback) const
+{
+  switch (m_type)
+  {
+    case VariantTypeDouble:
+      return m_data.dvalue;
+    case VariantTypeInteger:
+      return (double)m_data.integer;
+    case VariantTypeUnsignedInteger:
+      return (double)m_data.unsignedinteger;
+    case VariantTypeString:
+      return str2double(*m_data.string, fallback);
+    case VariantTypeWideString:
+      return str2double(*m_data.wstring, fallback);
+    default:
+      return fallback;
+  }
+
+  return fallback;
+}
+
+float CVariant::asFloat(float fallback) const
+{
+  switch (m_type)
+  {
+    case VariantTypeDouble:
+      return (float)m_data.dvalue;
+    case VariantTypeInteger:
+      return (float)m_data.integer;
+    case VariantTypeUnsignedInteger:
+      return (float)m_data.unsignedinteger;
+    case VariantTypeString:
+      return (float)str2double(*m_data.string, fallback);
+    case VariantTypeWideString:
+      return (float)str2double(*m_data.wstring, fallback);
+    default:
+      return fallback;
+  }
+
+  return fallback;
+}
+
+bool CVariant::asBoolean(bool fallback) const
+{
+  switch (m_type)
+  {
+    case VariantTypeBoolean:
+      return m_data.boolean;
+    case VariantTypeInteger:
+      return (m_data.integer != 0);
+    case VariantTypeUnsignedInteger:
+      return (m_data.unsignedinteger != 0);
+    case VariantTypeDouble:
+      return (m_data.dvalue != 0);
+    case VariantTypeString:
+      if (m_data.string->empty() || m_data.string->compare("0") == 0 || m_data.string->compare("false") == 0)
+        return false;
+      return true;
+    case VariantTypeWideString:
+      if (m_data.wstring->empty() || m_data.wstring->compare(L"0") == 0 || m_data.wstring->compare(L"false") == 0)
+        return false;
+      return true;
+    default:
+      return fallback;
+  }
+
+  return fallback;
+}
+
+std::string CVariant::asString(const std::string &fallback /* = "" */) const
+{
+  switch (m_type)
+  {
+    case VariantTypeString:
+      return *m_data.string;
+    case VariantTypeBoolean:
+      return m_data.boolean ? "true" : "false";
+    case VariantTypeInteger:
+      return std::to_string(m_data.integer);
+    case VariantTypeUnsignedInteger:
+      return std::to_string(m_data.unsignedinteger);
+    case VariantTypeDouble:
+      return std::to_string(m_data.dvalue);
+    default:
+      return fallback;
+  }
+
+  return fallback;
+}
+
+std::wstring CVariant::asWideString(const std::wstring &fallback /* = L"" */) const
+{
+  switch (m_type)
+  {
+    case VariantTypeWideString:
+      return *m_data.wstring;
+    case VariantTypeBoolean:
+      return m_data.boolean ? L"true" : L"false";
+    case VariantTypeInteger:
+      return std::to_wstring(m_data.integer);
+    case VariantTypeUnsignedInteger:
+      return std::to_wstring(m_data.unsignedinteger);
+    case VariantTypeDouble:
+      return std::to_wstring(m_data.dvalue);
+    default:
+      return fallback;
+  }
+
+  return fallback;
+}
+
+CVariant &CVariant::operator[](const std::string &key)
+{
+  if (m_type == VariantTypeNull)
+  {
+    m_type = VariantTypeObject;
+    m_data.map = new VariantMap;
+  }
+
+  if (m_type == VariantTypeObject)
+    return (*m_data.map)[key];
+  else
+    return ConstNullVariant;
+}
+
+const CVariant &CVariant::operator[](const std::string &key) const
+{
+  VariantMap::const_iterator it;
+  if (m_type == VariantTypeObject && (it = m_data.map->find(key)) != m_data.map->end())
+    return it->second;
+  else
+    return ConstNullVariant;
+}
+
+CVariant &CVariant::operator[](unsigned int position)
+{
+  if (m_type == VariantTypeArray && size() > position)
+    return m_data.array->at(position);
+  else
+    return ConstNullVariant;
+}
+
+const CVariant &CVariant::operator[](unsigned int position) const
+{
+  if (m_type == VariantTypeArray && size() > position)
+    return m_data.array->at(position);
+  else
+    return ConstNullVariant;
+}
+
+CVariant &CVariant::operator=(const CVariant &rhs)
+{
+  if (m_type == VariantTypeConstNull || this == &rhs)
+    return *this;
+
+  cleanup();
+
+  m_type = rhs.m_type;
+
+  switch (m_type)
+  {
+  case VariantTypeInteger:
+    m_data.integer = rhs.m_data.integer;
+    break;
+  case VariantTypeUnsignedInteger:
+    m_data.unsignedinteger = rhs.m_data.unsignedinteger;
+    break;
+  case VariantTypeBoolean:
+    m_data.boolean = rhs.m_data.boolean;
+    break;
+  case VariantTypeDouble:
+    m_data.dvalue = rhs.m_data.dvalue;
+    break;
+  case VariantTypeString:
+    m_data.string = new std::string(*rhs.m_data.string);
+    break;
+  case VariantTypeWideString:
+    m_data.wstring = new std::wstring(*rhs.m_data.wstring);
+    break;
+  case VariantTypeArray:
+    m_data.array = new VariantArray(rhs.m_data.array->begin(), rhs.m_data.array->end());
+    break;
+  case VariantTypeObject:
+    m_data.map = new VariantMap(rhs.m_data.map->begin(), rhs.m_data.map->end());
+    break;
+  default:
+    break;
+  }
+
+  return *this;
+}
+
+CVariant& CVariant::operator=(CVariant&& rhs)
+{
+  if (m_type == VariantTypeConstNull || this == &rhs)
+    return *this;
+
+  //Make sure that if we're moved into we don't leak any pointers
+  if (m_type != VariantTypeNull)
+    cleanup();
+
+  m_type = rhs.m_type;
+  m_data = std::move(rhs.m_data);
+
+  //Should be enough to just set m_type here
+  //but better safe than sorry, could probably lead to coverity warnings
+  if (rhs.m_type == VariantTypeString)
+    rhs.m_data.string = nullptr;
+  else if (rhs.m_type == VariantTypeWideString)
+    rhs.m_data.wstring = nullptr;
+  else if (rhs.m_type == VariantTypeArray)
+    rhs.m_data.array = nullptr;
+  else if (rhs.m_type == VariantTypeObject)
+    rhs.m_data.map = nullptr;
+
+  rhs.m_type = VariantTypeNull;
+
+  return *this;
+}
+
+bool CVariant::operator==(const CVariant &rhs) const
+{
+  if (m_type == rhs.m_type)
+  {
+    switch (m_type)
+    {
+    case VariantTypeInteger:
+      return m_data.integer == rhs.m_data.integer;
+    case VariantTypeUnsignedInteger:
+      return m_data.unsignedinteger == rhs.m_data.unsignedinteger;
+    case VariantTypeBoolean:
+      return m_data.boolean == rhs.m_data.boolean;
+    case VariantTypeDouble:
+      return m_data.dvalue == rhs.m_data.dvalue;
+    case VariantTypeString:
+      return *m_data.string == *rhs.m_data.string;
+    case VariantTypeWideString:
+      return *m_data.wstring == *rhs.m_data.wstring;
+    case VariantTypeArray:
+      return *m_data.array == *rhs.m_data.array;
+    case VariantTypeObject:
+      return *m_data.map == *rhs.m_data.map;
+    default:
+      break;
+    }
+  }
+
+  return false;
+}
+
+void CVariant::reserve(size_t length)
+{
+  if (m_type == VariantTypeNull)
+  {
+    m_type = VariantTypeArray;
+    m_data.array = new VariantArray;
+  }
+  if (m_type == VariantTypeArray)
+    m_data.array->reserve(length);
+}
+
+void CVariant::push_back(const CVariant &variant)
+{
+  if (m_type == VariantTypeNull)
+  {
+    m_type = VariantTypeArray;
+    m_data.array = new VariantArray;
+  }
+
+  if (m_type == VariantTypeArray)
+    m_data.array->push_back(variant);
+}
+
+void CVariant::push_back(CVariant &&variant)
+{
+  if (m_type == VariantTypeNull)
+  {
+    m_type = VariantTypeArray;
+    m_data.array = new VariantArray;
+  }
+
+  if (m_type == VariantTypeArray)
+    m_data.array->push_back(std::move(variant));
+}
+
+void CVariant::append(const CVariant &variant)
+{
+  push_back(variant);
+}
+
+void CVariant::append(CVariant&& variant)
+{
+  push_back(std::move(variant));
+}
+
+const char *CVariant::c_str() const
+{
+  if (m_type == VariantTypeString)
+    return m_data.string->c_str();
+  else
+    return NULL;
+}
+
+void CVariant::swap(CVariant &rhs)
+{
+  VariantType  temp_type = m_type;
+  VariantUnion temp_data = m_data;
+
+  m_type = rhs.m_type;
+  m_data = rhs.m_data;
+
+  rhs.m_type = temp_type;
+  rhs.m_data = temp_data;
+}
+
+CVariant::iterator_array CVariant::begin_array()
+{
+  if (m_type == VariantTypeArray)
+    return m_data.array->begin();
+  else
+    return EMPTY_ARRAY.begin();
+}
+
+CVariant::const_iterator_array CVariant::begin_array() const
+{
+  if (m_type == VariantTypeArray)
+    return m_data.array->begin();
+  else
+    return EMPTY_ARRAY.begin();
+}
+
+CVariant::iterator_array CVariant::end_array()
+{
+  if (m_type == VariantTypeArray)
+    return m_data.array->end();
+  else
+    return EMPTY_ARRAY.end();
+}
+
+CVariant::const_iterator_array CVariant::end_array() const
+{
+  if (m_type == VariantTypeArray)
+    return m_data.array->end();
+  else
+    return EMPTY_ARRAY.end();
+}
+
+CVariant::iterator_map CVariant::begin_map()
+{
+  if (m_type == VariantTypeObject)
+    return m_data.map->begin();
+  else
+    return EMPTY_MAP.begin();
+}
+
+CVariant::const_iterator_map CVariant::begin_map() const
+{
+  if (m_type == VariantTypeObject)
+    return m_data.map->begin();
+  else
+    return EMPTY_MAP.begin();
+}
+
+CVariant::iterator_map CVariant::end_map()
+{
+  if (m_type == VariantTypeObject)
+    return m_data.map->end();
+  else
+    return EMPTY_MAP.end();
+}
+
+CVariant::const_iterator_map CVariant::end_map() const
+{
+  if (m_type == VariantTypeObject)
+    return m_data.map->end();
+  else
+    return EMPTY_MAP.end();
+}
+
+unsigned int CVariant::size() const
+{
+  if (m_type == VariantTypeObject)
+    return m_data.map->size();
+  else if (m_type == VariantTypeArray)
+    return m_data.array->size();
+  else if (m_type == VariantTypeString)
+    return m_data.string->size();
+  else if (m_type == VariantTypeWideString)
+    return m_data.wstring->size();
+  else
+    return 0;
+}
+
+bool CVariant::empty() const
+{
+  if (m_type == VariantTypeObject)
+    return m_data.map->empty();
+  else if (m_type == VariantTypeArray)
+    return m_data.array->empty();
+  else if (m_type == VariantTypeString)
+    return m_data.string->empty();
+  else if (m_type == VariantTypeWideString)
+    return m_data.wstring->empty();
+  else if (m_type == VariantTypeNull)
+    return true;
+
+  return false;
+}
+
+void CVariant::clear()
+{
+  if (m_type == VariantTypeObject)
+    m_data.map->clear();
+  else if (m_type == VariantTypeArray)
+    m_data.array->clear();
+  else if (m_type == VariantTypeString)
+    m_data.string->clear();
+  else if (m_type == VariantTypeWideString)
+    m_data.wstring->clear();
+}
+
+void CVariant::erase(const std::string &key)
+{
+  if (m_type == VariantTypeNull)
+  {
+    m_type = VariantTypeObject;
+    m_data.map = new VariantMap;
+  }
+  else if (m_type == VariantTypeObject)
+    m_data.map->erase(key);
+}
+
+void CVariant::erase(unsigned int position)
+{
+  if (m_type == VariantTypeNull)
+  {
+    m_type = VariantTypeArray;
+    m_data.array = new VariantArray;
+  }
+
+  if (m_type == VariantTypeArray && position < size())
+    m_data.array->erase(m_data.array->begin() + position);
+}
+
+bool CVariant::isMember(const std::string &key) const
+{
+  if (m_type == VariantTypeObject)
+    return m_data.map->find(key) != m_data.map->end();
+
+  return false;
+}