document.h

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// Tencent is pleased to support the open source community by making RapidJSON
// available.
//
// Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All
// rights reserved.
//
// Licensed under the MIT License (the "License"); you may not use this file
// except in compliance with the License. You may obtain a copy of the License
// at
//
// http://opensource.org/licenses/MIT
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.

#ifndef RAPIDJSON_DOCUMENT_H_
#define RAPIDJSON_DOCUMENT_H_

#include <limits>
#include <new>  // placement new
#include "encodedstream.h"
#include "internal/meta.h"
#include "internal/strfunc.h"
#include "memorystream.h"
#include "reader.h"

RAPIDJSON_DIAG_PUSH
#ifdef __clang__
RAPIDJSON_DIAG_OFF(padded)
RAPIDJSON_DIAG_OFF(switch - enum)
RAPIDJSON_DIAG_OFF(c++ 98 - compat)
#elif defined(_MSC_VER)
RAPIDJSON_DIAG_OFF(4127)  // conditional expression is constant
RAPIDJSON_DIAG_OFF(
    4244)  // conversion from kXxxFlags to 'uint16_t', possible loss of data
#endif

#ifdef __GNUC__
RAPIDJSON_DIAG_OFF(effc++)
#endif  // __GNUC__

#ifndef RAPIDJSON_NOMEMBERITERATORCLASS
#include <iterator>  // std::random_access_iterator_tag
#endif

#if RAPIDJSON_HAS_CXX11_RVALUE_REFS
#include <utility>  // std::move
#endif

RAPIDJSON_NAMESPACE_BEGIN

// Forward declaration.
template <typename Encoding, typename Allocator>
class GenericValue;

template <typename Encoding, typename Allocator, typename StackAllocator>
class GenericDocument;


template <typename Encoding, typename Allocator>
class GenericMember {
 public:
  GenericValue<Encoding, Allocator>
      name;  
  GenericValue<Encoding, Allocator> value;  

#if RAPIDJSON_HAS_CXX11_RVALUE_REFS
  GenericMember(GenericMember &&rhs) RAPIDJSON_NOEXCEPT
      : name(std::move(rhs.name)),
        value(std::move(rhs.value)) {}

  GenericMember &operator=(GenericMember &&rhs) RAPIDJSON_NOEXCEPT {
    return *this = static_cast<GenericMember &>(rhs);
  }
#endif


  GenericMember &operator=(GenericMember &rhs) RAPIDJSON_NOEXCEPT {
    if (RAPIDJSON_LIKELY(this != &rhs)) {
      name = rhs.name;
      value = rhs.value;
    }
    return *this;
  }

  // swap() for std::sort() and other potential use in STL.
  friend inline void swap(GenericMember &a,
                          GenericMember &b) RAPIDJSON_NOEXCEPT {
    a.name.Swap(b.name);
    a.value.Swap(b.value);
  }

 private:
  GenericMember(const GenericMember &rhs);
};

// GenericMemberIterator

#ifndef RAPIDJSON_NOMEMBERITERATORCLASS


template <bool Const, typename Encoding, typename Allocator>
class GenericMemberIterator {
  friend class GenericValue<Encoding, Allocator>;
  template <bool, typename, typename>
  friend class GenericMemberIterator;

  typedef GenericMember<Encoding, Allocator> PlainType;
  typedef typename internal::MaybeAddConst<Const, PlainType>::Type ValueType;

 public:
  typedef GenericMemberIterator Iterator;
  typedef GenericMemberIterator<true, Encoding, Allocator> ConstIterator;
  typedef GenericMemberIterator<false, Encoding, Allocator> NonConstIterator;

  typedef ValueType value_type;
  typedef ValueType *pointer;
  typedef ValueType &reference;
  typedef std::ptrdiff_t difference_type;
  typedef std::random_access_iterator_tag iterator_category;

  typedef pointer Pointer;
  typedef reference Reference;
  typedef difference_type DifferenceType;


  GenericMemberIterator() : ptr_() {}


  GenericMemberIterator(const NonConstIterator &it) : ptr_(it.ptr_) {}
  Iterator &operator=(const NonConstIterator &it) {
    ptr_ = it.ptr_;
    return *this;
  }


  Iterator &operator++() {
    ++ptr_;
    return *this;
  }
  Iterator &operator--() {
    --ptr_;
    return *this;
  }
  Iterator operator++(int) {
    Iterator old(*this);
    ++ptr_;
    return old;
  }
  Iterator operator--(int) {
    Iterator old(*this);
    --ptr_;
    return old;
  }


  Iterator operator+(DifferenceType n) const { return Iterator(ptr_ + n); }
  Iterator operator-(DifferenceType n) const { return Iterator(ptr_ - n); }

  Iterator &operator+=(DifferenceType n) {
    ptr_ += n;
    return *this;
  }
  Iterator &operator-=(DifferenceType n) {
    ptr_ -= n;
    return *this;
  }


  bool operator==(ConstIterator that) const { return ptr_ == that.ptr_; }
  bool operator!=(ConstIterator that) const { return ptr_ != that.ptr_; }
  bool operator<=(ConstIterator that) const { return ptr_ <= that.ptr_; }
  bool operator>=(ConstIterator that) const { return ptr_ >= that.ptr_; }
  bool operator<(ConstIterator that) const { return ptr_ < that.ptr_; }
  bool operator>(ConstIterator that) const { return ptr_ > that.ptr_; }


  Reference operator*() const { return *ptr_; }
  Pointer operator->() const { return ptr_; }
  Reference operator[](DifferenceType n) const { return ptr_[n]; }

  DifferenceType operator-(ConstIterator that) const {
    return ptr_ - that.ptr_;
  }

 private:
  explicit GenericMemberIterator(Pointer p) : ptr_(p) {}

  Pointer ptr_;  
};

#else  // RAPIDJSON_NOMEMBERITERATORCLASS

// class-based member iterator implementation disabled, use plain pointers

template <bool Const, typename Encoding, typename Allocator>
class GenericMemberIterator;

template <typename Encoding, typename Allocator>
class GenericMemberIterator<false, Encoding, Allocator> {
  typedef GenericMember<Encoding, Allocator> *Iterator;
};
template <typename Encoding, typename Allocator>
class GenericMemberIterator<true, Encoding, Allocator> {
  typedef const GenericMember<Encoding, Allocator> *Iterator;
};

#endif  // RAPIDJSON_NOMEMBERITERATORCLASS

// GenericStringRef


template <typename CharType>
struct GenericStringRef {
  typedef CharType Ch;  

#ifndef __clang__  // -Wdocumentation

#endif
  template <SizeType N>
  GenericStringRef(const CharType (&str)[N]) RAPIDJSON_NOEXCEPT
      : s(str),
        length(N - 1) {}

#ifndef __clang__  // -Wdocumentation

#endif
  explicit GenericStringRef(const CharType *str)
      : s(str), length(NotNullStrLen(str)) {}

#ifndef __clang__  // -Wdocumentation

#endif
  GenericStringRef(const CharType *str, SizeType len)
      : s(RAPIDJSON_LIKELY(str) ? str : emptyString), length(len) {
    RAPIDJSON_ASSERT(str != 0 || len == 0u);
  }

  GenericStringRef(const GenericStringRef &rhs)
      : s(rhs.s), length(rhs.length) {}

  operator const Ch *() const { return s; }

  const Ch *const s;      
  const SizeType length;  

 private:
  SizeType NotNullStrLen(const CharType *str) {
    RAPIDJSON_ASSERT(str != 0);
    return internal::StrLen(str);
  }

  static const Ch emptyString[];

  template <SizeType N>
  GenericStringRef(CharType (&str)[N]) /* = delete */;
  GenericStringRef &operator=(const GenericStringRef &rhs) /* = delete */;
};

template <typename CharType>
const CharType GenericStringRef<CharType>::emptyString[] = {CharType()};


template <typename CharType>
inline GenericStringRef<CharType> StringRef(const CharType *str) {
  return GenericStringRef<CharType>(str);
}


template <typename CharType>
inline GenericStringRef<CharType> StringRef(const CharType *str,
                                            size_t length) {
  return GenericStringRef<CharType>(str, SizeType(length));
}

#if RAPIDJSON_HAS_STDSTRING

template <typename CharType>
inline GenericStringRef<CharType> StringRef(
    const std::basic_string<CharType> &str) {
  return GenericStringRef<CharType>(str.data(), SizeType(str.size()));
}
#endif

// GenericValue type traits
namespace internal {

template <typename T, typename Encoding = void, typename Allocator = void>
struct IsGenericValueImpl : FalseType {};

// select candidates according to nested encoding and allocator types
template <typename T>
struct IsGenericValueImpl<T, typename Void<typename T::EncodingType>::Type,
                          typename Void<typename T::AllocatorType>::Type>
    : IsBaseOf<
          GenericValue<typename T::EncodingType, typename T::AllocatorType>,
          T>::Type {};

// helper to match arbitrary GenericValue instantiations, including derived
// classes
template <typename T>
struct IsGenericValue : IsGenericValueImpl<T>::Type {};

}  // namespace internal

// TypeHelper

namespace internal {

template <typename ValueType, typename T>
struct TypeHelper {};

template <typename ValueType>
struct TypeHelper<ValueType, bool> {
  static bool Is(const ValueType &v) { return v.IsBool(); }
  static bool Get(const ValueType &v) { return v.GetBool(); }
  static ValueType &Set(ValueType &v, bool data) { return v.SetBool(data); }
  static ValueType &Set(ValueType &v, bool data,
                        typename ValueType::AllocatorType &) {
    return v.SetBool(data);
  }
};

template <typename ValueType>
struct TypeHelper<ValueType, int> {
  static bool Is(const ValueType &v) { return v.IsInt(); }
  static int Get(const ValueType &v) { return v.GetInt(); }
  static ValueType &Set(ValueType &v, int data) { return v.SetInt(data); }
  static ValueType &Set(ValueType &v, int data,
                        typename ValueType::AllocatorType &) {
    return v.SetInt(data);
  }
};

template <typename ValueType>
struct TypeHelper<ValueType, unsigned> {
  static bool Is(const ValueType &v) { return v.IsUint(); }
  static unsigned Get(const ValueType &v) { return v.GetUint(); }
  static ValueType &Set(ValueType &v, unsigned data) { return v.SetUint(data); }
  static ValueType &Set(ValueType &v, unsigned data,
                        typename ValueType::AllocatorType &) {
    return v.SetUint(data);
  }
};

#ifdef _MSC_VER
RAPIDJSON_STATIC_ASSERT(sizeof(long) == sizeof(int));
template <typename ValueType>
struct TypeHelper<ValueType, long> {
  static bool Is(const ValueType &v) { return v.IsInt(); }
  static long Get(const ValueType &v) { return v.GetInt(); }
  static ValueType &Set(ValueType &v, long data) { return v.SetInt(data); }
  static ValueType &Set(ValueType &v, long data,
                        typename ValueType::AllocatorType &) {
    return v.SetInt(data);
  }
};

RAPIDJSON_STATIC_ASSERT(sizeof(unsigned long) == sizeof(unsigned));
template <typename ValueType>
struct TypeHelper<ValueType, unsigned long> {
  static bool Is(const ValueType &v) { return v.IsUint(); }
  static unsigned long Get(const ValueType &v) { return v.GetUint(); }
  static ValueType &Set(ValueType &v, unsigned long data) {
    return v.SetUint(data);
  }
  static ValueType &Set(ValueType &v, unsigned long data,
                        typename ValueType::AllocatorType &) {
    return v.SetUint(data);
  }
};
#endif

template <typename ValueType>
struct TypeHelper<ValueType, int64_t> {
  static bool Is(const ValueType &v) { return v.IsInt64(); }
  static int64_t Get(const ValueType &v) { return v.GetInt64(); }
  static ValueType &Set(ValueType &v, int64_t data) { return v.SetInt64(data); }
  static ValueType &Set(ValueType &v, int64_t data,
                        typename ValueType::AllocatorType &) {
    return v.SetInt64(data);
  }
};

template <typename ValueType>
struct TypeHelper<ValueType, uint64_t> {
  static bool Is(const ValueType &v) { return v.IsUint64(); }
  static uint64_t Get(const ValueType &v) { return v.GetUint64(); }
  static ValueType &Set(ValueType &v, uint64_t data) {
    return v.SetUint64(data);
  }
  static ValueType &Set(ValueType &v, uint64_t data,
                        typename ValueType::AllocatorType &) {
    return v.SetUint64(data);
  }
};

template <typename ValueType>
struct TypeHelper<ValueType, double> {
  static bool Is(const ValueType &v) { return v.IsDouble(); }
  static double Get(const ValueType &v) { return v.GetDouble(); }
  static ValueType &Set(ValueType &v, double data) { return v.SetDouble(data); }
  static ValueType &Set(ValueType &v, double data,
                        typename ValueType::AllocatorType &) {
    return v.SetDouble(data);
  }
};

template <typename ValueType>
struct TypeHelper<ValueType, float> {
  static bool Is(const ValueType &v) { return v.IsFloat(); }
  static float Get(const ValueType &v) { return v.GetFloat(); }
  static ValueType &Set(ValueType &v, float data) { return v.SetFloat(data); }
  static ValueType &Set(ValueType &v, float data,
                        typename ValueType::AllocatorType &) {
    return v.SetFloat(data);
  }
};

template <typename ValueType>
struct TypeHelper<ValueType, const typename ValueType::Ch *> {
  typedef const typename ValueType::Ch *StringType;
  static bool Is(const ValueType &v) { return v.IsString(); }
  static StringType Get(const ValueType &v) { return v.GetString(); }
  static ValueType &Set(ValueType &v, const StringType data) {
    return v.SetString(typename ValueType::StringRefType(data));
  }
  static ValueType &Set(ValueType &v, const StringType data,
                        typename ValueType::AllocatorType &a) {
    return v.SetString(data, a);
  }
};

#if RAPIDJSON_HAS_STDSTRING
template <typename ValueType>
struct TypeHelper<ValueType, std::basic_string<typename ValueType::Ch>> {
  typedef std::basic_string<typename ValueType::Ch> StringType;
  static bool Is(const ValueType &v) { return v.IsString(); }
  static StringType Get(const ValueType &v) {
    return StringType(v.GetString(), v.GetStringLength());
  }
  static ValueType &Set(ValueType &v, const StringType &data,
                        typename ValueType::AllocatorType &a) {
    return v.SetString(data, a);
  }
};
#endif

template <typename ValueType>
struct TypeHelper<ValueType, typename ValueType::Array> {
  typedef typename ValueType::Array ArrayType;
  static bool Is(const ValueType &v) { return v.IsArray(); }
  static ArrayType Get(ValueType &v) { return v.GetArray(); }
  static ValueType &Set(ValueType &v, ArrayType data) { return v = data; }
  static ValueType &Set(ValueType &v, ArrayType data,
                        typename ValueType::AllocatorType &) {
    return v = data;
  }
};

template <typename ValueType>
struct TypeHelper<ValueType, typename ValueType::ConstArray> {
  typedef typename ValueType::ConstArray ArrayType;
  static bool Is(const ValueType &v) { return v.IsArray(); }
  static ArrayType Get(const ValueType &v) { return v.GetArray(); }
};

template <typename ValueType>
struct TypeHelper<ValueType, typename ValueType::Object> {
  typedef typename ValueType::Object ObjectType;
  static bool Is(const ValueType &v) { return v.IsObject(); }
  static ObjectType Get(ValueType &v) { return v.GetObject(); }
  static ValueType &Set(ValueType &v, ObjectType data) { return v = data; }
  static ValueType &Set(ValueType &v, ObjectType data,
                        typename ValueType::AllocatorType &) {
    return v = data;
  }
};

template <typename ValueType>
struct TypeHelper<ValueType, typename ValueType::ConstObject> {
  typedef typename ValueType::ConstObject ObjectType;
  static bool Is(const ValueType &v) { return v.IsObject(); }
  static ObjectType Get(const ValueType &v) { return v.GetObject(); }
};

}  // namespace internal

// Forward declarations
template <bool, typename>
class GenericArray;
template <bool, typename>
class GenericObject;

// GenericValue


template <typename Encoding, typename Allocator = MemoryPoolAllocator<>>
class GenericValue {
 public:
  typedef GenericMember<Encoding, Allocator> Member;
  typedef Encoding EncodingType;    
  typedef Allocator AllocatorType;  
  typedef typename Encoding::Ch Ch;  
  typedef GenericStringRef<Ch>
      StringRefType;  
  typedef typename GenericMemberIterator<false, Encoding, Allocator>::Iterator
      MemberIterator;  
  typedef typename GenericMemberIterator<true, Encoding, Allocator>::Iterator
      ConstMemberIterator;  
  typedef GenericValue
      *ValueIterator;  
  typedef const GenericValue
      *ConstValueIterator;  
  typedef GenericValue<Encoding, Allocator>
      ValueType;  
  typedef GenericArray<false, ValueType> Array;
  typedef GenericArray<true, ValueType> ConstArray;
  typedef GenericObject<false, ValueType> Object;
  typedef GenericObject<true, ValueType> ConstObject;



  GenericValue() RAPIDJSON_NOEXCEPT : data_() { data_.f.flags = kNullFlag; }

#if RAPIDJSON_HAS_CXX11_RVALUE_REFS
  GenericValue(GenericValue &&rhs) RAPIDJSON_NOEXCEPT : data_(rhs.data_) {
    rhs.data_.f.flags = kNullFlag;  // give up contents
  }
#endif

 private:
  GenericValue(const GenericValue &rhs);

#if RAPIDJSON_HAS_CXX11_RVALUE_REFS
  template <typename StackAllocator>
  GenericValue(GenericDocument<Encoding, Allocator, StackAllocator> &&rhs);

  template <typename StackAllocator>
  GenericValue &operator=(
      GenericDocument<Encoding, Allocator, StackAllocator> &&rhs);
#endif

 public:

  explicit GenericValue(Type type) RAPIDJSON_NOEXCEPT : data_() {
    static const uint16_t defaultFlags[] = {
        kNullFlag,  kFalseFlag,       kTrueFlag,     kObjectFlag,
        kArrayFlag, kShortStringFlag, kNumberAnyFlag};
    RAPIDJSON_NOEXCEPT_ASSERT(type >= kNullType && type <= kNumberType);
    data_.f.flags = defaultFlags[type];

    // Use ShortString to store empty string.
    if (type == kStringType) data_.ss.SetLength(0);
  }


  template <typename SourceAllocator>
  GenericValue(const GenericValue<Encoding, SourceAllocator> &rhs,
               Allocator &allocator, bool copyConstStrings = false) {
    switch (rhs.GetType()) {
      case kObjectType: {
        SizeType count = rhs.data_.o.size;
        Member *lm = reinterpret_cast<Member *>(
            allocator.Malloc(count * sizeof(Member)));
        const typename GenericValue<Encoding, SourceAllocator>::Member *rm =
            rhs.GetMembersPointer();
        for (SizeType i = 0; i < count; i++) {
          new (&lm[i].name)
              GenericValue(rm[i].name, allocator, copyConstStrings);
          new (&lm[i].value)
              GenericValue(rm[i].value, allocator, copyConstStrings);
        }
        data_.f.flags = kObjectFlag;
        data_.o.size = data_.o.capacity = count;
        SetMembersPointer(lm);
      } break;
      case kArrayType: {
        SizeType count = rhs.data_.a.size;
        GenericValue *le = reinterpret_cast<GenericValue *>(
            allocator.Malloc(count * sizeof(GenericValue)));
        const GenericValue<Encoding, SourceAllocator> *re =
            rhs.GetElementsPointer();
        for (SizeType i = 0; i < count; i++)
          new (&le[i]) GenericValue(re[i], allocator, copyConstStrings);
        data_.f.flags = kArrayFlag;
        data_.a.size = data_.a.capacity = count;
        SetElementsPointer(le);
      } break;
      case kStringType:
        if (rhs.data_.f.flags == kConstStringFlag && !copyConstStrings) {
          data_.f.flags = rhs.data_.f.flags;
          data_ = *reinterpret_cast<const Data *>(&rhs.data_);
        } else
          SetStringRaw(StringRef(rhs.GetString(), rhs.GetStringLength()),
                       allocator);
        break;
      default:
        data_.f.flags = rhs.data_.f.flags;
        data_ = *reinterpret_cast<const Data *>(&rhs.data_);
        break;
    }
  }


#ifndef RAPIDJSON_DOXYGEN_RUNNING  // hide SFINAE from Doxygen
  template <typename T>
  explicit GenericValue(T b, RAPIDJSON_ENABLEIF((internal::IsSame<bool, T>)))
      RAPIDJSON_NOEXCEPT  // See #472
#else
  explicit GenericValue(bool b) RAPIDJSON_NOEXCEPT
#endif
      : data_() {
    // safe-guard against failing SFINAE
    RAPIDJSON_STATIC_ASSERT((internal::IsSame<bool, T>::Value));
    data_.f.flags = b ? kTrueFlag : kFalseFlag;
  }

  explicit GenericValue(int i) RAPIDJSON_NOEXCEPT : data_() {
    data_.n.i64 = i;
    data_.f.flags =
        (i >= 0) ? (kNumberIntFlag | kUintFlag | kUint64Flag) : kNumberIntFlag;
  }

  explicit GenericValue(unsigned u) RAPIDJSON_NOEXCEPT : data_() {
    data_.n.u64 = u;
    data_.f.flags = (u & 0x80000000)
                        ? kNumberUintFlag
                        : (kNumberUintFlag | kIntFlag | kInt64Flag);
  }

  explicit GenericValue(int64_t i64) RAPIDJSON_NOEXCEPT : data_() {
    data_.n.i64 = i64;
    data_.f.flags = kNumberInt64Flag;
    if (i64 >= 0) {
      data_.f.flags |= kNumberUint64Flag;
      if (!(static_cast<uint64_t>(i64) &
            RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0x00000000)))
        data_.f.flags |= kUintFlag;
      if (!(static_cast<uint64_t>(i64) &
            RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0x80000000)))
        data_.f.flags |= kIntFlag;
    } else if (i64 >= static_cast<int64_t>(
                          RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0x80000000)))
      data_.f.flags |= kIntFlag;
  }

  explicit GenericValue(uint64_t u64) RAPIDJSON_NOEXCEPT : data_() {
    data_.n.u64 = u64;
    data_.f.flags = kNumberUint64Flag;
    if (!(u64 & RAPIDJSON_UINT64_C2(0x80000000, 0x00000000)))
      data_.f.flags |= kInt64Flag;
    if (!(u64 & RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0x00000000)))
      data_.f.flags |= kUintFlag;
    if (!(u64 & RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0x80000000)))
      data_.f.flags |= kIntFlag;
  }

  explicit GenericValue(double d) RAPIDJSON_NOEXCEPT : data_() {
    data_.n.d = d;
    data_.f.flags = kNumberDoubleFlag;
  }

  explicit GenericValue(float f) RAPIDJSON_NOEXCEPT : data_() {
    data_.n.d = static_cast<double>(f);
    data_.f.flags = kNumberDoubleFlag;
  }

  GenericValue(const Ch *s, SizeType length) RAPIDJSON_NOEXCEPT : data_() {
    SetStringRaw(StringRef(s, length));
  }

  explicit GenericValue(StringRefType s) RAPIDJSON_NOEXCEPT : data_() {
    SetStringRaw(s);
  }

  GenericValue(const Ch *s, SizeType length, Allocator &allocator) : data_() {
    SetStringRaw(StringRef(s, length), allocator);
  }

  GenericValue(const Ch *s, Allocator &allocator) : data_() {
    SetStringRaw(StringRef(s), allocator);
  }

#if RAPIDJSON_HAS_STDSTRING

  GenericValue(const std::basic_string<Ch> &s, Allocator &allocator) : data_() {
    SetStringRaw(StringRef(s), allocator);
  }
#endif


  GenericValue(Array a) RAPIDJSON_NOEXCEPT : data_(a.value_.data_) {
    a.value_.data_ = Data();
    a.value_.data_.f.flags = kArrayFlag;
  }


  GenericValue(Object o) RAPIDJSON_NOEXCEPT : data_(o.value_.data_) {
    o.value_.data_ = Data();
    o.value_.data_.f.flags = kObjectFlag;
  }


  ~GenericValue() {
    if (Allocator::kNeedFree) {  // Shortcut by Allocator's trait
      switch (data_.f.flags) {
        case kArrayFlag: {
          GenericValue *e = GetElementsPointer();
          for (GenericValue *v = e; v != e + data_.a.size; ++v)
            v->~GenericValue();
          Allocator::Free(e);
        } break;

        case kObjectFlag:
          for (MemberIterator m = MemberBegin(); m != MemberEnd(); ++m)
            m->~Member();
          Allocator::Free(GetMembersPointer());
          break;

        case kCopyStringFlag:
          Allocator::Free(const_cast<Ch *>(GetStringPointer()));
          break;

        default:
          break;  // Do nothing for other types.
      }
    }
  }





  GenericValue &operator=(GenericValue &rhs) RAPIDJSON_NOEXCEPT {
    if (RAPIDJSON_LIKELY(this != &rhs)) {
      this->~GenericValue();
      RawAssign(rhs);
    }
    return *this;
  }

#if RAPIDJSON_HAS_CXX11_RVALUE_REFS
  GenericValue &operator=(GenericValue &&rhs) RAPIDJSON_NOEXCEPT {
    return *this = rhs.Move();
  }
#endif


  GenericValue &operator=(StringRefType str) RAPIDJSON_NOEXCEPT {
    GenericValue s(str);
    return *this = s;
  }


  template <typename T>
  RAPIDJSON_DISABLEIF_RETURN((internal::IsPointer<T>), (GenericValue &))
  operator=(T value) {
    GenericValue v(value);
    return *this = v;
  }


  template <typename SourceAllocator>
  GenericValue &CopyFrom(const GenericValue<Encoding, SourceAllocator> &rhs,
                         Allocator &allocator, bool copyConstStrings = false) {
    RAPIDJSON_ASSERT(static_cast<void *>(this) !=
                     static_cast<void const *>(&rhs));
    this->~GenericValue();
    new (this) GenericValue(rhs, allocator, copyConstStrings);
    return *this;
  }


  GenericValue &Swap(GenericValue &other) RAPIDJSON_NOEXCEPT {
    GenericValue temp;
    temp.RawAssign(*this);
    RawAssign(other);
    other.RawAssign(temp);
    return *this;
  }


  friend inline void swap(GenericValue &a, GenericValue &b) RAPIDJSON_NOEXCEPT {
    a.Swap(b);
  }


  GenericValue &Move() RAPIDJSON_NOEXCEPT { return *this; }



  template <typename SourceAllocator>
  bool operator==(const GenericValue<Encoding, SourceAllocator> &rhs) const {
    typedef GenericValue<Encoding, SourceAllocator> RhsType;
    if (GetType() != rhs.GetType()) return false;

    switch (GetType()) {
      case kObjectType:  // Warning: O(n^2) inner-loop
        if (data_.o.size != rhs.data_.o.size) return false;
        for (ConstMemberIterator lhsMemberItr = MemberBegin();
             lhsMemberItr != MemberEnd(); ++lhsMemberItr) {
          typename RhsType::ConstMemberIterator rhsMemberItr =
              rhs.FindMember(lhsMemberItr->name);
          if (rhsMemberItr == rhs.MemberEnd() ||
              lhsMemberItr->value != rhsMemberItr->value)
            return false;
        }
        return true;

      case kArrayType:
        if (data_.a.size != rhs.data_.a.size) return false;
        for (SizeType i = 0; i < data_.a.size; i++)
          if ((*this)[i] != rhs[i]) return false;
        return true;

      case kStringType:
        return StringEqual(rhs);

      case kNumberType:
        if (IsDouble() || rhs.IsDouble()) {
          double a = GetDouble();      // May convert from integer to double.
          double b = rhs.GetDouble();  // Ditto
          return a >= b && a <= b;     // Prevent -Wfloat-equal
        } else
          return data_.n.u64 == rhs.data_.n.u64;

      default:
        return true;
    }
  }

  bool operator==(const Ch *rhs) const {
    return *this == GenericValue(StringRef(rhs));
  }

#if RAPIDJSON_HAS_STDSTRING

  bool operator==(const std::basic_string<Ch> &rhs) const {
    return *this == GenericValue(StringRef(rhs));
  }
#endif


  template <typename T>
  RAPIDJSON_DISABLEIF_RETURN(
      (internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T>>),
      (bool))
  operator==(const T &rhs) const {
    return *this == GenericValue(rhs);
  }


  template <typename SourceAllocator>
  bool operator!=(const GenericValue<Encoding, SourceAllocator> &rhs) const {
    return !(*this == rhs);
  }

  bool operator!=(const Ch *rhs) const { return !(*this == rhs); }


  template <typename T>
  RAPIDJSON_DISABLEIF_RETURN((internal::IsGenericValue<T>), (bool))
  operator!=(const T &rhs) const {
    return !(*this == rhs);
  }


  template <typename T>
  friend RAPIDJSON_DISABLEIF_RETURN((internal::IsGenericValue<T>), (bool))
  operator==(const T &lhs, const GenericValue &rhs) {
    return rhs == lhs;
  }


  template <typename T>
  friend RAPIDJSON_DISABLEIF_RETURN((internal::IsGenericValue<T>), (bool))
  operator!=(const T &lhs, const GenericValue &rhs) {
    return !(rhs == lhs);
  }



  Type GetType() const { return static_cast<Type>(data_.f.flags & kTypeMask); }
  bool IsNull() const { return data_.f.flags == kNullFlag; }
  bool IsFalse() const { return data_.f.flags == kFalseFlag; }
  bool IsTrue() const { return data_.f.flags == kTrueFlag; }
  bool IsBool() const { return (data_.f.flags & kBoolFlag) != 0; }
  bool IsObject() const { return data_.f.flags == kObjectFlag; }
  bool IsArray() const { return data_.f.flags == kArrayFlag; }
  bool IsNumber() const { return (data_.f.flags & kNumberFlag) != 0; }
  bool IsInt() const { return (data_.f.flags & kIntFlag) != 0; }
  bool IsUint() const { return (data_.f.flags & kUintFlag) != 0; }
  bool IsInt64() const { return (data_.f.flags & kInt64Flag) != 0; }
  bool IsUint64() const { return (data_.f.flags & kUint64Flag) != 0; }
  bool IsDouble() const { return (data_.f.flags & kDoubleFlag) != 0; }
  bool IsString() const { return (data_.f.flags & kStringFlag) != 0; }

  // Checks whether a number can be losslessly converted to a double.
  bool IsLosslessDouble() const {
    if (!IsNumber()) return false;
    if (IsUint64()) {
      uint64_t u = GetUint64();
      volatile double d = static_cast<double>(u);
      return (d >= 0.0) &&
             (d <
              static_cast<double>((std::numeric_limits<uint64_t>::max)())) &&
             (u == static_cast<uint64_t>(d));
    }
    if (IsInt64()) {
      int64_t i = GetInt64();
      volatile double d = static_cast<double>(i);
      return (d >=
              static_cast<double>((std::numeric_limits<int64_t>::min)())) &&
             (d < static_cast<double>((std::numeric_limits<int64_t>::max)())) &&
             (i == static_cast<int64_t>(d));
    }
    return true;  // double, int, uint are always lossless
  }

  // Checks whether a number is a float (possible lossy).
  bool IsFloat() const {
    if ((data_.f.flags & kDoubleFlag) == 0) return false;
    double d = GetDouble();
    return d >= -3.4028234e38 && d <= 3.4028234e38;
  }
  // Checks whether a number can be losslessly converted to a float.
  bool IsLosslessFloat() const {
    if (!IsNumber()) return false;
    double a = GetDouble();
    if (a < static_cast<double>(-(std::numeric_limits<float>::max)()) ||
        a > static_cast<double>((std::numeric_limits<float>::max)()))
      return false;
    double b = static_cast<double>(static_cast<float>(a));
    return a >= b && a <= b;  // Prevent -Wfloat-equal
  }




  GenericValue &SetNull() {
    this->~GenericValue();
    new (this) GenericValue();
    return *this;
  }




  bool GetBool() const {
    RAPIDJSON_ASSERT(IsBool());
    return data_.f.flags == kTrueFlag;
  }

  GenericValue &SetBool(bool b) {
    this->~GenericValue();
    new (this) GenericValue(b);
    return *this;
  }





  GenericValue &SetObject() {
    this->~GenericValue();
    new (this) GenericValue(kObjectType);
    return *this;
  }

  SizeType MemberCount() const {
    RAPIDJSON_ASSERT(IsObject());
    return data_.o.size;
  }

  SizeType MemberCapacity() const {
    RAPIDJSON_ASSERT(IsObject());
    return data_.o.capacity;
  }

  bool ObjectEmpty() const {
    RAPIDJSON_ASSERT(IsObject());
    return data_.o.size == 0;
  }


  template <typename T>
  RAPIDJSON_DISABLEIF_RETURN(
      (internal::NotExpr<
          internal::IsSame<typename internal::RemoveConst<T>::Type, Ch>>),
      (GenericValue &))
  operator[](T *name) {
    GenericValue n(StringRef(name));
    return (*this)[n];
  }
  template <typename T>
  RAPIDJSON_DISABLEIF_RETURN(
      (internal::NotExpr<
          internal::IsSame<typename internal::RemoveConst<T>::Type, Ch>>),
      (const GenericValue &))
  operator[](T *name) const {
    return const_cast<GenericValue &>(*this)[name];
  }


  template <typename SourceAllocator>
  GenericValue &operator[](
      const GenericValue<Encoding, SourceAllocator> &name) {
    MemberIterator member = FindMember(name);
    if (member != MemberEnd())
      return member->value;
    else {
      RAPIDJSON_ASSERT(false);  // see above note

      // This will generate -Wexit-time-destructors in clang
      // static GenericValue NullValue;
      // return NullValue;

      // Use static buffer and placement-new to prevent destruction
      static char buffer[sizeof(GenericValue)];
      return *new (buffer) GenericValue();
    }
  }
  template <typename SourceAllocator>
  const GenericValue &operator[](
      const GenericValue<Encoding, SourceAllocator> &name) const {
    return const_cast<GenericValue &>(*this)[name];
  }

#if RAPIDJSON_HAS_STDSTRING
  GenericValue &operator[](const std::basic_string<Ch> &name) {
    return (*this)[GenericValue(StringRef(name))];
  }
  const GenericValue &operator[](const std::basic_string<Ch> &name) const {
    return (*this)[GenericValue(StringRef(name))];
  }
#endif


  ConstMemberIterator MemberBegin() const {
    RAPIDJSON_ASSERT(IsObject());
    return ConstMemberIterator(GetMembersPointer());
  }

  ConstMemberIterator MemberEnd() const {
    RAPIDJSON_ASSERT(IsObject());
    return ConstMemberIterator(GetMembersPointer() + data_.o.size);
  }

  MemberIterator MemberBegin() {
    RAPIDJSON_ASSERT(IsObject());
    return MemberIterator(GetMembersPointer());
  }

  MemberIterator MemberEnd() {
    RAPIDJSON_ASSERT(IsObject());
    return MemberIterator(GetMembersPointer() + data_.o.size);
  }


  GenericValue &MemberReserve(SizeType newCapacity, Allocator &allocator) {
    RAPIDJSON_ASSERT(IsObject());
    if (newCapacity > data_.o.capacity) {
      SetMembersPointer(reinterpret_cast<Member *>(allocator.Realloc(
          GetMembersPointer(), data_.o.capacity * sizeof(Member),
          newCapacity * sizeof(Member))));
      data_.o.capacity = newCapacity;
    }
    return *this;
  }


  bool HasMember(const Ch *name) const {
    return FindMember(name) != MemberEnd();
  }

#if RAPIDJSON_HAS_STDSTRING

  bool HasMember(const std::basic_string<Ch> &name) const {
    return FindMember(name) != MemberEnd();
  }
#endif


  template <typename SourceAllocator>
  bool HasMember(const GenericValue<Encoding, SourceAllocator> &name) const {
    return FindMember(name) != MemberEnd();
  }


  MemberIterator FindMember(const Ch *name) {
    GenericValue n(StringRef(name));
    return FindMember(n);
  }

  ConstMemberIterator FindMember(const Ch *name) const {
    return const_cast<GenericValue &>(*this).FindMember(name);
  }


  template <typename SourceAllocator>
  MemberIterator FindMember(
      const GenericValue<Encoding, SourceAllocator> &name) {
    RAPIDJSON_ASSERT(IsObject());
    RAPIDJSON_ASSERT(name.IsString());
    MemberIterator member = MemberBegin();
    for (; member != MemberEnd(); ++member)
      if (name.StringEqual(member->name)) break;
    return member;
  }
  template <typename SourceAllocator>
  ConstMemberIterator FindMember(
      const GenericValue<Encoding, SourceAllocator> &name) const {
    return const_cast<GenericValue &>(*this).FindMember(name);
  }

#if RAPIDJSON_HAS_STDSTRING

  MemberIterator FindMember(const std::basic_string<Ch> &name) {
    return FindMember(GenericValue(StringRef(name)));
  }
  ConstMemberIterator FindMember(const std::basic_string<Ch> &name) const {
    return FindMember(GenericValue(StringRef(name)));
  }
#endif


  GenericValue &AddMember(GenericValue &name, GenericValue &value,
                          Allocator &allocator) {
    RAPIDJSON_ASSERT(IsObject());
    RAPIDJSON_ASSERT(name.IsString());

    ObjectData &o = data_.o;
    if (o.size >= o.capacity)
      MemberReserve(o.capacity == 0 ? kDefaultObjectCapacity
                                    : (o.capacity + (o.capacity + 1) / 2),
                    allocator);
    Member *members = GetMembersPointer();
    members[o.size].name.RawAssign(name);
    members[o.size].value.RawAssign(value);
    o.size++;
    return *this;
  }


  GenericValue &AddMember(GenericValue &name, StringRefType value,
                          Allocator &allocator) {
    GenericValue v(value);
    return AddMember(name, v, allocator);
  }

#if RAPIDJSON_HAS_STDSTRING

  GenericValue &AddMember(GenericValue &name, std::basic_string<Ch> &value,
                          Allocator &allocator) {
    GenericValue v(value, allocator);
    return AddMember(name, v, allocator);
  }
#endif


  template <typename T>
  RAPIDJSON_DISABLEIF_RETURN(
      (internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T>>),
      (GenericValue &))
  AddMember(GenericValue &name, T value, Allocator &allocator) {
    GenericValue v(value);
    return AddMember(name, v, allocator);
  }

#if RAPIDJSON_HAS_CXX11_RVALUE_REFS
  GenericValue &AddMember(GenericValue &&name, GenericValue &&value,
                          Allocator &allocator) {
    return AddMember(name, value, allocator);
  }
  GenericValue &AddMember(GenericValue &&name, GenericValue &value,
                          Allocator &allocator) {
    return AddMember(name, value, allocator);
  }
  GenericValue &AddMember(GenericValue &name, GenericValue &&value,
                          Allocator &allocator) {
    return AddMember(name, value, allocator);
  }
  GenericValue &AddMember(StringRefType name, GenericValue &&value,
                          Allocator &allocator) {
    GenericValue n(name);
    return AddMember(n, value, allocator);
  }
#endif  // RAPIDJSON_HAS_CXX11_RVALUE_REFS


  GenericValue &AddMember(StringRefType name, GenericValue &value,
                          Allocator &allocator) {
    GenericValue n(name);
    return AddMember(n, value, allocator);
  }


  GenericValue &AddMember(StringRefType name, StringRefType value,
                          Allocator &allocator) {
    GenericValue v(value);
    return AddMember(name, v, allocator);
  }


  template <typename T>
  RAPIDJSON_DISABLEIF_RETURN(
      (internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T>>),
      (GenericValue &))
  AddMember(StringRefType name, T value, Allocator &allocator) {
    GenericValue n(name);
    return AddMember(n, value, allocator);
  }


  void RemoveAllMembers() {
    RAPIDJSON_ASSERT(IsObject());
    for (MemberIterator m = MemberBegin(); m != MemberEnd(); ++m) m->~Member();
    data_.o.size = 0;
  }


  bool RemoveMember(const Ch *name) {
    GenericValue n(StringRef(name));
    return RemoveMember(n);
  }

#if RAPIDJSON_HAS_STDSTRING
  bool RemoveMember(const std::basic_string<Ch> &name) {
    return RemoveMember(GenericValue(StringRef(name)));
  }
#endif

  template <typename SourceAllocator>
  bool RemoveMember(const GenericValue<Encoding, SourceAllocator> &name) {
    MemberIterator m = FindMember(name);
    if (m != MemberEnd()) {
      RemoveMember(m);
      return true;
    } else
      return false;
  }


  MemberIterator RemoveMember(MemberIterator m) {
    RAPIDJSON_ASSERT(IsObject());
    RAPIDJSON_ASSERT(data_.o.size > 0);
    RAPIDJSON_ASSERT(GetMembersPointer() != 0);
    RAPIDJSON_ASSERT(m >= MemberBegin() && m < MemberEnd());

    MemberIterator last(GetMembersPointer() + (data_.o.size - 1));
    if (data_.o.size > 1 && m != last)
      *m = *last;  // Move the last one to this place
    else
      m->~Member();  // Only one left, just destroy
    --data_.o.size;
    return m;
  }


  MemberIterator EraseMember(ConstMemberIterator pos) {
    return EraseMember(pos, pos + 1);
  }


  MemberIterator EraseMember(ConstMemberIterator first,
                             ConstMemberIterator last) {
    RAPIDJSON_ASSERT(IsObject());
    RAPIDJSON_ASSERT(data_.o.size > 0);
    RAPIDJSON_ASSERT(GetMembersPointer() != 0);
    RAPIDJSON_ASSERT(first >= MemberBegin());
    RAPIDJSON_ASSERT(first <= last);
    RAPIDJSON_ASSERT(last <= MemberEnd());

    MemberIterator pos = MemberBegin() + (first - MemberBegin());
    for (MemberIterator itr = pos; itr != last; ++itr) itr->~Member();
    std::memmove(static_cast<void *>(&*pos), &*last,
                 static_cast<size_t>(MemberEnd() - last) * sizeof(Member));
    data_.o.size -= static_cast<SizeType>(last - first);
    return pos;
  }


  bool EraseMember(const Ch *name) {
    GenericValue n(StringRef(name));
    return EraseMember(n);
  }

#if RAPIDJSON_HAS_STDSTRING
  bool EraseMember(const std::basic_string<Ch> &name) {
    return EraseMember(GenericValue(StringRef(name)));
  }
#endif

  template <typename SourceAllocator>
  bool EraseMember(const GenericValue<Encoding, SourceAllocator> &name) {
    MemberIterator m = FindMember(name);
    if (m != MemberEnd()) {
      EraseMember(m);
      return true;
    } else
      return false;
  }

  Object GetObject() {
    RAPIDJSON_ASSERT(IsObject());
    return Object(*this);
  }
  ConstObject GetObject() const {
    RAPIDJSON_ASSERT(IsObject());
    return ConstObject(*this);
  }





  GenericValue &SetArray() {
    this->~GenericValue();
    new (this) GenericValue(kArrayType);
    return *this;
  }

  SizeType Size() const {
    RAPIDJSON_ASSERT(IsArray());
    return data_.a.size;
  }

  SizeType Capacity() const {
    RAPIDJSON_ASSERT(IsArray());
    return data_.a.capacity;
  }

  bool Empty() const {
    RAPIDJSON_ASSERT(IsArray());
    return data_.a.size == 0;
  }


  void Clear() {
    RAPIDJSON_ASSERT(IsArray());
    GenericValue *e = GetElementsPointer();
    for (GenericValue *v = e; v != e + data_.a.size; ++v) v->~GenericValue();
    data_.a.size = 0;
  }


  GenericValue &operator[](SizeType index) {
    RAPIDJSON_ASSERT(IsArray());
    RAPIDJSON_ASSERT(index < data_.a.size);
    return GetElementsPointer()[index];
  }
  const GenericValue &operator[](SizeType index) const {
    return const_cast<GenericValue &>(*this)[index];
  }


  ValueIterator Begin() {
    RAPIDJSON_ASSERT(IsArray());
    return GetElementsPointer();
  }

  ValueIterator End() {
    RAPIDJSON_ASSERT(IsArray());
    return GetElementsPointer() + data_.a.size;
  }

  ConstValueIterator Begin() const {
    return const_cast<GenericValue &>(*this).Begin();
  }

  ConstValueIterator End() const {
    return const_cast<GenericValue &>(*this).End();
  }


  GenericValue &Reserve(SizeType newCapacity, Allocator &allocator) {
    RAPIDJSON_ASSERT(IsArray());
    if (newCapacity > data_.a.capacity) {
      SetElementsPointer(reinterpret_cast<GenericValue *>(allocator.Realloc(
          GetElementsPointer(), data_.a.capacity * sizeof(GenericValue),
          newCapacity * sizeof(GenericValue))));
      data_.a.capacity = newCapacity;
    }
    return *this;
  }


  GenericValue &PushBack(GenericValue &value, Allocator &allocator) {
    RAPIDJSON_ASSERT(IsArray());
    if (data_.a.size >= data_.a.capacity)
      Reserve(data_.a.capacity == 0
                  ? kDefaultArrayCapacity
                  : (data_.a.capacity + (data_.a.capacity + 1) / 2),
              allocator);
    GetElementsPointer()[data_.a.size++].RawAssign(value);
    return *this;
  }

#if RAPIDJSON_HAS_CXX11_RVALUE_REFS
  GenericValue &PushBack(GenericValue &&value, Allocator &allocator) {
    return PushBack(value, allocator);
  }
#endif  // RAPIDJSON_HAS_CXX11_RVALUE_REFS


  GenericValue &PushBack(StringRefType value, Allocator &allocator) {
    return (*this).template PushBack<StringRefType>(value, allocator);
  }


  template <typename T>
  RAPIDJSON_DISABLEIF_RETURN(
      (internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T>>),
      (GenericValue &))
  PushBack(T value, Allocator &allocator) {
    GenericValue v(value);
    return PushBack(v, allocator);
  }


  GenericValue &PopBack() {
    RAPIDJSON_ASSERT(IsArray());
    RAPIDJSON_ASSERT(!Empty());
    GetElementsPointer()[--data_.a.size].~GenericValue();
    return *this;
  }


  ValueIterator Erase(ConstValueIterator pos) { return Erase(pos, pos + 1); }


  ValueIterator Erase(ConstValueIterator first, ConstValueIterator last) {
    RAPIDJSON_ASSERT(IsArray());
    RAPIDJSON_ASSERT(data_.a.size > 0);
    RAPIDJSON_ASSERT(GetElementsPointer() != 0);
    RAPIDJSON_ASSERT(first >= Begin());
    RAPIDJSON_ASSERT(first <= last);
    RAPIDJSON_ASSERT(last <= End());
    ValueIterator pos = Begin() + (first - Begin());
    for (ValueIterator itr = pos; itr != last; ++itr) itr->~GenericValue();
    std::memmove(static_cast<void *>(pos), last,
                 static_cast<size_t>(End() - last) * sizeof(GenericValue));
    data_.a.size -= static_cast<SizeType>(last - first);
    return pos;
  }

  Array GetArray() {
    RAPIDJSON_ASSERT(IsArray());
    return Array(*this);
  }
  ConstArray GetArray() const {
    RAPIDJSON_ASSERT(IsArray());
    return ConstArray(*this);
  }




  int GetInt() const {
    RAPIDJSON_ASSERT(data_.f.flags & kIntFlag);
    return data_.n.i.i;
  }
  unsigned GetUint() const {
    RAPIDJSON_ASSERT(data_.f.flags & kUintFlag);
    return data_.n.u.u;
  }
  int64_t GetInt64() const {
    RAPIDJSON_ASSERT(data_.f.flags & kInt64Flag);
    return data_.n.i64;
  }
  uint64_t GetUint64() const {
    RAPIDJSON_ASSERT(data_.f.flags & kUint64Flag);
    return data_.n.u64;
  }


  double GetDouble() const {
    RAPIDJSON_ASSERT(IsNumber());
    if ((data_.f.flags & kDoubleFlag) != 0)
      return data_.n.d;  // exact type, no conversion.
    if ((data_.f.flags & kIntFlag) != 0) return data_.n.i.i;  // int -> double
    if ((data_.f.flags & kUintFlag) != 0)
      return data_.n.u.u;  // unsigned -> double
    if ((data_.f.flags & kInt64Flag) != 0)
      return static_cast<double>(
          data_.n.i64);  // int64_t -> double (may lose precision)
    RAPIDJSON_ASSERT((data_.f.flags & kUint64Flag) != 0);
    return static_cast<double>(
        data_.n.u64);  // uint64_t -> double (may lose precision)
  }


  float GetFloat() const { return static_cast<float>(GetDouble()); }

  GenericValue &SetInt(int i) {
    this->~GenericValue();
    new (this) GenericValue(i);
    return *this;
  }
  GenericValue &SetUint(unsigned u) {
    this->~GenericValue();
    new (this) GenericValue(u);
    return *this;
  }
  GenericValue &SetInt64(int64_t i64) {
    this->~GenericValue();
    new (this) GenericValue(i64);
    return *this;
  }
  GenericValue &SetUint64(uint64_t u64) {
    this->~GenericValue();
    new (this) GenericValue(u64);
    return *this;
  }
  GenericValue &SetDouble(double d) {
    this->~GenericValue();
    new (this) GenericValue(d);
    return *this;
  }
  GenericValue &SetFloat(float f) {
    this->~GenericValue();
    new (this) GenericValue(static_cast<double>(f));
    return *this;
  }




  const Ch *GetString() const {
    RAPIDJSON_ASSERT(IsString());
    return (data_.f.flags & kInlineStrFlag) ? data_.ss.str : GetStringPointer();
  }


  SizeType GetStringLength() const {
    RAPIDJSON_ASSERT(IsString());
    return ((data_.f.flags & kInlineStrFlag) ? (data_.ss.GetLength())
                                             : data_.s.length);
  }


  GenericValue &SetString(const Ch *s, SizeType length) {
    return SetString(StringRef(s, length));
  }


  GenericValue &SetString(StringRefType s) {
    this->~GenericValue();
    SetStringRaw(s);
    return *this;
  }


  GenericValue &SetString(const Ch *s, SizeType length, Allocator &allocator) {
    return SetString(StringRef(s, length), allocator);
  }


  GenericValue &SetString(const Ch *s, Allocator &allocator) {
    return SetString(StringRef(s), allocator);
  }


  GenericValue &SetString(StringRefType s, Allocator &allocator) {
    this->~GenericValue();
    SetStringRaw(s, allocator);
    return *this;
  }

#if RAPIDJSON_HAS_STDSTRING

  GenericValue &SetString(const std::basic_string<Ch> &s,
                          Allocator &allocator) {
    return SetString(StringRef(s), allocator);
  }
#endif





  template <typename T>
  bool Is() const {
    return internal::TypeHelper<ValueType, T>::Is(*this);
  }

  template <typename T>
  T Get() const {
    return internal::TypeHelper<ValueType, T>::Get(*this);
  }

  template <typename T>
  T Get() {
    return internal::TypeHelper<ValueType, T>::Get(*this);
  }

  template <typename T>
  ValueType &Set(const T &data) {
    return internal::TypeHelper<ValueType, T>::Set(*this, data);
  }

  template <typename T>
  ValueType &Set(const T &data, AllocatorType &allocator) {
    return internal::TypeHelper<ValueType, T>::Set(*this, data, allocator);
  }



  template <typename Handler>
  bool Accept(Handler &handler) const {
    switch (GetType()) {
      case kNullType:
        return handler.Null();
      case kFalseType:
        return handler.Bool(false);
      case kTrueType:
        return handler.Bool(true);

      case kObjectType:
        if (RAPIDJSON_UNLIKELY(!handler.StartObject())) return false;
        for (ConstMemberIterator m = MemberBegin(); m != MemberEnd(); ++m) {
          RAPIDJSON_ASSERT(m->name.IsString());  // User may change the type of
                                                 // name by MemberIterator.
          if (RAPIDJSON_UNLIKELY(
                  !handler.Key(m->name.GetString(), m->name.GetStringLength(),
                               (m->name.data_.f.flags & kCopyFlag) != 0)))
            return false;
          if (RAPIDJSON_UNLIKELY(!m->value.Accept(handler))) return false;
        }
        return handler.EndObject(data_.o.size);

      case kArrayType:
        if (RAPIDJSON_UNLIKELY(!handler.StartArray())) return false;
        for (const GenericValue *v = Begin(); v != End(); ++v)
          if (RAPIDJSON_UNLIKELY(!v->Accept(handler))) return false;
        return handler.EndArray(data_.a.size);

      case kStringType:
        return handler.String(GetString(), GetStringLength(),
                              (data_.f.flags & kCopyFlag) != 0);

      default:
        RAPIDJSON_ASSERT(GetType() == kNumberType);
        if (IsDouble())
          return handler.Double(data_.n.d);
        else if (IsInt())
          return handler.Int(data_.n.i.i);
        else if (IsUint())
          return handler.Uint(data_.n.u.u);
        else if (IsInt64())
          return handler.Int64(data_.n.i64);
        else
          return handler.Uint64(data_.n.u64);
    }
  }

 private:
  template <typename, typename>
  friend class GenericValue;
  template <typename, typename, typename>
  friend class GenericDocument;

  enum {
    kBoolFlag = 0x0008,
    kNumberFlag = 0x0010,
    kIntFlag = 0x0020,
    kUintFlag = 0x0040,
    kInt64Flag = 0x0080,
    kUint64Flag = 0x0100,
    kDoubleFlag = 0x0200,
    kStringFlag = 0x0400,
    kCopyFlag = 0x0800,
    kInlineStrFlag = 0x1000,

    // Initial flags of different types.
    kNullFlag = kNullType,
    kTrueFlag = kTrueType | kBoolFlag,
    kFalseFlag = kFalseType | kBoolFlag,
    kNumberIntFlag = kNumberType | kNumberFlag | kIntFlag | kInt64Flag,
    kNumberUintFlag =
        kNumberType | kNumberFlag | kUintFlag | kUint64Flag | kInt64Flag,
    kNumberInt64Flag = kNumberType | kNumberFlag | kInt64Flag,
    kNumberUint64Flag = kNumberType | kNumberFlag | kUint64Flag,
    kNumberDoubleFlag = kNumberType | kNumberFlag | kDoubleFlag,
    kNumberAnyFlag = kNumberType | kNumberFlag | kIntFlag | kInt64Flag |
                     kUintFlag | kUint64Flag | kDoubleFlag,
    kConstStringFlag = kStringType | kStringFlag,
    kCopyStringFlag = kStringType | kStringFlag | kCopyFlag,
    kShortStringFlag = kStringType | kStringFlag | kCopyFlag | kInlineStrFlag,
    kObjectFlag = kObjectType,
    kArrayFlag = kArrayType,

    kTypeMask = 0x07
  };

  static const SizeType kDefaultArrayCapacity = 16;
  static const SizeType kDefaultObjectCapacity = 16;

  struct Flag {
#if RAPIDJSON_48BITPOINTER_OPTIMIZATION
    char payload[sizeof(SizeType) * 2 +
                 6];  // 2 x SizeType + lower 48-bit pointer
#elif RAPIDJSON_64BIT
    char payload[sizeof(SizeType) * 2 + sizeof(void *) + 6];  // 6 padding bytes
#else
        char payload[sizeof(SizeType) * 2 + sizeof(void *) +
                     2];  // 2 padding bytes
#endif
    uint16_t flags;
  };

  struct String {
    SizeType length;
    SizeType hashcode;  
    const Ch *str;
  };  // 12 bytes in 32-bit mode, 16 bytes in 64-bit mode

  // implementation detail: ShortString can represent zero-terminated strings up
  // to MaxSize chars (excluding the terminating zero) and store a value to
  // determine the length of the contained string in the last character
  // str[LenPos] by storing "MaxSize - length" there. If the string to store has
  // the maximal length of MaxSize then str[LenPos] will be 0 and therefore act
  // as the string terminator as well. For getting the string length back from
  // that value just use "MaxSize - str[LenPos]". This allows to store 13-chars
  // strings in 32-bit mode, 21-chars strings in 64-bit mode, 13-chars strings
  // for RAPIDJSON_48BITPOINTER_OPTIMIZATION=1 inline (for `UTF8`-encoded
  // strings).
  struct ShortString {
    enum {
      MaxChars = sizeof(static_cast<Flag *>(0)->payload) / sizeof(Ch),
      MaxSize = MaxChars - 1,
      LenPos = MaxSize
    };
    Ch str[MaxChars];

    inline static bool Usable(SizeType len) { return (MaxSize >= len); }
    inline void SetLength(SizeType len) {
      str[LenPos] = static_cast<Ch>(MaxSize - len);
    }
    inline SizeType GetLength() const {
      return static_cast<SizeType>(MaxSize - str[LenPos]);
    }
  };  // at most as many bytes as "String" above => 12 bytes in 32-bit mode, 16
      // bytes in 64-bit mode

  // By using proper binary layout, retrieval of different integer types do not
  // need conversions.
  union Number {
#if RAPIDJSON_ENDIAN == RAPIDJSON_LITTLEENDIAN
    struct I {
      int i;
      char padding[4];
    } i;
    struct U {
      unsigned u;
      char padding2[4];
    } u;
#else
    struct I {
      char padding[4];
      int i;
    } i;
    struct U {
      char padding2[4];
      unsigned u;
    } u;
#endif
    int64_t i64;
    uint64_t u64;
    double d;
  };  // 8 bytes

  struct ObjectData {
    SizeType size;
    SizeType capacity;
    Member *members;
  };  // 12 bytes in 32-bit mode, 16 bytes in 64-bit mode

  struct ArrayData {
    SizeType size;
    SizeType capacity;
    GenericValue *elements;
  };  // 12 bytes in 32-bit mode, 16 bytes in 64-bit mode

  union Data {
    String s;
    ShortString ss;
    Number n;
    ObjectData o;
    ArrayData a;
    Flag f;
  };  // 16 bytes in 32-bit mode, 24 bytes in 64-bit mode, 16 bytes in 64-bit
      // with RAPIDJSON_48BITPOINTER_OPTIMIZATION

  RAPIDJSON_FORCEINLINE const Ch *GetStringPointer() const {
    return RAPIDJSON_GETPOINTER(Ch, data_.s.str);
  }
  RAPIDJSON_FORCEINLINE const Ch *SetStringPointer(const Ch *str) {
    return RAPIDJSON_SETPOINTER(Ch, data_.s.str, str);
  }
  RAPIDJSON_FORCEINLINE GenericValue *GetElementsPointer() const {
    return RAPIDJSON_GETPOINTER(GenericValue, data_.a.elements);
  }
  RAPIDJSON_FORCEINLINE GenericValue *SetElementsPointer(
      GenericValue *elements) {
    return RAPIDJSON_SETPOINTER(GenericValue, data_.a.elements, elements);
  }
  RAPIDJSON_FORCEINLINE Member *GetMembersPointer() const {
    return RAPIDJSON_GETPOINTER(Member, data_.o.members);
  }
  RAPIDJSON_FORCEINLINE Member *SetMembersPointer(Member *members) {
    return RAPIDJSON_SETPOINTER(Member, data_.o.members, members);
  }

  // Initialize this value as array with initial data, without calling
  // destructor.
  void SetArrayRaw(GenericValue *values, SizeType count, Allocator &allocator) {
    data_.f.flags = kArrayFlag;
    if (count) {
      GenericValue *e = static_cast<GenericValue *>(
          allocator.Malloc(count * sizeof(GenericValue)));
      SetElementsPointer(e);
      std::memcpy(static_cast<void *>(e), values, count * sizeof(GenericValue));
    } else
      SetElementsPointer(0);
    data_.a.size = data_.a.capacity = count;
  }

  void SetObjectRaw(Member *members, SizeType count, Allocator &allocator) {
    data_.f.flags = kObjectFlag;
    if (count) {
      Member *m =
          static_cast<Member *>(allocator.Malloc(count * sizeof(Member)));
      SetMembersPointer(m);
      std::memcpy(static_cast<void *>(m), members, count * sizeof(Member));
    } else
      SetMembersPointer(0);
    data_.o.size = data_.o.capacity = count;
  }

  void SetStringRaw(StringRefType s) RAPIDJSON_NOEXCEPT {
    data_.f.flags = kConstStringFlag;
    SetStringPointer(s);
    data_.s.length = s.length;
  }

  void SetStringRaw(StringRefType s, Allocator &allocator) {
    Ch *str = 0;
    if (ShortString::Usable(s.length)) {
      data_.f.flags = kShortStringFlag;
      data_.ss.SetLength(s.length);
      str = data_.ss.str;
    } else {
      data_.f.flags = kCopyStringFlag;
      data_.s.length = s.length;
      str = static_cast<Ch *>(allocator.Malloc((s.length + 1) * sizeof(Ch)));
      SetStringPointer(str);
    }
    std::memcpy(str, s, s.length * sizeof(Ch));
    str[s.length] = '\0';
  }

  void RawAssign(GenericValue &rhs) RAPIDJSON_NOEXCEPT {
    data_ = rhs.data_;
    // data_.f.flags = rhs.data_.f.flags;
    rhs.data_.f.flags = kNullFlag;
  }

  template <typename SourceAllocator>
  bool StringEqual(const GenericValue<Encoding, SourceAllocator> &rhs) const {
    RAPIDJSON_ASSERT(IsString());
    RAPIDJSON_ASSERT(rhs.IsString());

    const SizeType len1 = GetStringLength();
    const SizeType len2 = rhs.GetStringLength();
    if (len1 != len2) {
      return false;
    }

    const Ch *const str1 = GetString();
    const Ch *const str2 = rhs.GetString();
    if (str1 == str2) {
      return true;
    }  // fast path for constant string

    return (std::memcmp(str1, str2, sizeof(Ch) * len1) == 0);
  }

  Data data_;
};

typedef GenericValue<UTF8<>> Value;

// GenericDocument


template <typename Encoding, typename Allocator = MemoryPoolAllocator<>,
          typename StackAllocator = CrtAllocator>
class GenericDocument : public GenericValue<Encoding, Allocator> {
 public:
  typedef typename Encoding::Ch Ch;  
  typedef GenericValue<Encoding, Allocator>
      ValueType;                    
  typedef Allocator AllocatorType;  


  explicit GenericDocument(Type type, Allocator *allocator = 0,
                           size_t stackCapacity = kDefaultStackCapacity,
                           StackAllocator *stackAllocator = 0)
      : GenericValue<Encoding, Allocator>(type),
        allocator_(allocator),
        ownAllocator_(0),
        stack_(stackAllocator, stackCapacity),
        parseResult_() {
    if (!allocator_) ownAllocator_ = allocator_ = RAPIDJSON_NEW(Allocator)();
  }


  GenericDocument(Allocator *allocator = 0,
                  size_t stackCapacity = kDefaultStackCapacity,
                  StackAllocator *stackAllocator = 0)
      : allocator_(allocator),
        ownAllocator_(0),
        stack_(stackAllocator, stackCapacity),
        parseResult_() {
    if (!allocator_) ownAllocator_ = allocator_ = RAPIDJSON_NEW(Allocator)();
  }

#if RAPIDJSON_HAS_CXX11_RVALUE_REFS
  GenericDocument(GenericDocument &&rhs) RAPIDJSON_NOEXCEPT
      : ValueType(std::forward<ValueType>(
            rhs)),  // explicit cast to avoid prohibited move from Document
        allocator_(rhs.allocator_),
        ownAllocator_(rhs.ownAllocator_),
        stack_(std::move(rhs.stack_)),
        parseResult_(rhs.parseResult_) {
    rhs.allocator_ = 0;
    rhs.ownAllocator_ = 0;
    rhs.parseResult_ = ParseResult();
  }
#endif

  ~GenericDocument() { Destroy(); }

#if RAPIDJSON_HAS_CXX11_RVALUE_REFS
  GenericDocument &operator=(GenericDocument &&rhs) RAPIDJSON_NOEXCEPT {
    // The cast to ValueType is necessary here, because otherwise it would
    // attempt to call GenericValue's templated assignment operator.
    ValueType::operator=(std::forward<ValueType>(rhs));

    // Calling the destructor here would prematurely call stack_'s destructor
    Destroy();

    allocator_ = rhs.allocator_;
    ownAllocator_ = rhs.ownAllocator_;
    stack_ = std::move(rhs.stack_);
    parseResult_ = rhs.parseResult_;

    rhs.allocator_ = 0;
    rhs.ownAllocator_ = 0;
    rhs.parseResult_ = ParseResult();

    return *this;
  }
#endif


  GenericDocument &Swap(GenericDocument &rhs) RAPIDJSON_NOEXCEPT {
    ValueType::Swap(rhs);
    stack_.Swap(rhs.stack_);
    internal::Swap(allocator_, rhs.allocator_);
    internal::Swap(ownAllocator_, rhs.ownAllocator_);
    internal::Swap(parseResult_, rhs.parseResult_);
    return *this;
  }

  // Allow Swap with ValueType.
  // Refer to Effective C++ 3rd Edition/Item 33: Avoid hiding inherited names.
  using ValueType::Swap;


  friend inline void swap(GenericDocument &a,
                          GenericDocument &b) RAPIDJSON_NOEXCEPT {
    a.Swap(b);
  }


  template <typename Generator>
  GenericDocument &Populate(Generator &g) {
    ClearStackOnExit scope(*this);
    if (g(*this)) {
      RAPIDJSON_ASSERT(stack_.GetSize() ==
                       sizeof(ValueType));  // Got one and only one root object
      ValueType::operator=(*stack_.template Pop<ValueType>(
          1));  // Move value from stack to document
    }
    return *this;
  }



  template <unsigned parseFlags, typename SourceEncoding, typename InputStream>
  GenericDocument &ParseStream(InputStream &is) {
    GenericReader<SourceEncoding, Encoding, StackAllocator> reader(
        stack_.HasAllocator() ? &stack_.GetAllocator() : 0);
    ClearStackOnExit scope(*this);
    parseResult_ = reader.template Parse<parseFlags>(is, *this);
    if (parseResult_) {
      RAPIDJSON_ASSERT(stack_.GetSize() ==
                       sizeof(ValueType));  // Got one and only one root object
      ValueType::operator=(*stack_.template Pop<ValueType>(
          1));  // Move value from stack to document
    }
    return *this;
  }


  template <unsigned parseFlags, typename InputStream>
  GenericDocument &ParseStream(InputStream &is) {
    return ParseStream<parseFlags, Encoding, InputStream>(is);
  }


  template <typename InputStream>
  GenericDocument &ParseStream(InputStream &is) {
    return ParseStream<kParseDefaultFlags, Encoding, InputStream>(is);
  }



  template <unsigned parseFlags>
  GenericDocument &ParseInsitu(Ch *str) {
    GenericInsituStringStream<Encoding> s(str);
    return ParseStream<parseFlags | kParseInsituFlag>(s);
  }


  GenericDocument &ParseInsitu(Ch *str) {
    return ParseInsitu<kParseDefaultFlags>(str);
  }



  template <unsigned parseFlags, typename SourceEncoding>
  GenericDocument &Parse(const typename SourceEncoding::Ch *str) {
    RAPIDJSON_ASSERT(!(parseFlags & kParseInsituFlag));
    GenericStringStream<SourceEncoding> s(str);
    return ParseStream<parseFlags, SourceEncoding>(s);
  }


  template <unsigned parseFlags>
  GenericDocument &Parse(const Ch *str) {
    return Parse<parseFlags, Encoding>(str);
  }


  GenericDocument &Parse(const Ch *str) {
    return Parse<kParseDefaultFlags>(str);
  }

  template <unsigned parseFlags, typename SourceEncoding>
  GenericDocument &Parse(const typename SourceEncoding::Ch *str,
                         size_t length) {
    RAPIDJSON_ASSERT(!(parseFlags & kParseInsituFlag));
    MemoryStream ms(reinterpret_cast<const char *>(str),
                    length * sizeof(typename SourceEncoding::Ch));
    EncodedInputStream<SourceEncoding, MemoryStream> is(ms);
    ParseStream<parseFlags, SourceEncoding>(is);
    return *this;
  }

  template <unsigned parseFlags>
  GenericDocument &Parse(const Ch *str, size_t length) {
    return Parse<parseFlags, Encoding>(str, length);
  }

  GenericDocument &Parse(const Ch *str, size_t length) {
    return Parse<kParseDefaultFlags>(str, length);
  }

#if RAPIDJSON_HAS_STDSTRING
  template <unsigned parseFlags, typename SourceEncoding>
  GenericDocument &Parse(
      const std::basic_string<typename SourceEncoding::Ch> &str) {
    // c_str() is constant complexity according to standard. Should be faster
    // than Parse(const char*, size_t)
    return Parse<parseFlags, SourceEncoding>(str.c_str());
  }

  template <unsigned parseFlags>
  GenericDocument &Parse(const std::basic_string<Ch> &str) {
    return Parse<parseFlags, Encoding>(str.c_str());
  }

  GenericDocument &Parse(const std::basic_string<Ch> &str) {
    return Parse<kParseDefaultFlags>(str);
  }
#endif  // RAPIDJSON_HAS_STDSTRING



  bool HasParseError() const { return parseResult_.IsError(); }

  ParseErrorCode GetParseError() const { return parseResult_.Code(); }

  size_t GetErrorOffset() const { return parseResult_.Offset(); }

#ifndef __clang  // -Wdocumentation

#endif
  operator ParseResult() const { return parseResult_; }

  Allocator &GetAllocator() {
    RAPIDJSON_ASSERT(allocator_);
    return *allocator_;
  }

  size_t GetStackCapacity() const { return stack_.GetCapacity(); }

 private:
  // clear stack on any exit from ParseStream, e.g. due to exception
  struct ClearStackOnExit {
    explicit ClearStackOnExit(GenericDocument &d) : d_(d) {}
    ~ClearStackOnExit() { d_.ClearStack(); }

   private:
    ClearStackOnExit(const ClearStackOnExit &);
    ClearStackOnExit &operator=(const ClearStackOnExit &);
    GenericDocument &d_;
  };

  // callers of the following private Handler functions
  // template <typename,typename,typename> friend class GenericReader; // for
  // parsing
  template <typename, typename>
  friend class GenericValue;  // for deep copying

 public:
  // Implementation of Handler
  bool Null() {
    new (stack_.template Push<ValueType>()) ValueType();
    return true;
  }
  bool Bool(bool b) {
    new (stack_.template Push<ValueType>()) ValueType(b);
    return true;
  }
  bool Int(int i) {
    new (stack_.template Push<ValueType>()) ValueType(i);
    return true;
  }
  bool Uint(unsigned i) {
    new (stack_.template Push<ValueType>()) ValueType(i);
    return true;
  }
  bool Int64(int64_t i) {
    new (stack_.template Push<ValueType>()) ValueType(i);
    return true;
  }
  bool Uint64(uint64_t i) {
    new (stack_.template Push<ValueType>()) ValueType(i);
    return true;
  }
  bool Double(double d) {
    new (stack_.template Push<ValueType>()) ValueType(d);
    return true;
  }

  bool RawNumber(const Ch *str, SizeType length, bool copy) {
    if (copy)
      new (stack_.template Push<ValueType>())
          ValueType(str, length, GetAllocator());
    else
      new (stack_.template Push<ValueType>()) ValueType(str, length);
    return true;
  }

  bool String(const Ch *str, SizeType length, bool copy) {
    if (copy)
      new (stack_.template Push<ValueType>())
          ValueType(str, length, GetAllocator());
    else
      new (stack_.template Push<ValueType>()) ValueType(str, length);
    return true;
  }

  bool StartObject() {
    new (stack_.template Push<ValueType>()) ValueType(kObjectType);
    return true;
  }

  bool Key(const Ch *str, SizeType length, bool copy) {
    return String(str, length, copy);
  }

  bool EndObject(SizeType memberCount) {
    typename ValueType::Member *members =
        stack_.template Pop<typename ValueType::Member>(memberCount);
    stack_.template Top<ValueType>()->SetObjectRaw(members, memberCount,
                                                   GetAllocator());
    return true;
  }

  bool StartArray() {
    new (stack_.template Push<ValueType>()) ValueType(kArrayType);
    return true;
  }

  bool EndArray(SizeType elementCount) {
    ValueType *elements = stack_.template Pop<ValueType>(elementCount);
    stack_.template Top<ValueType>()->SetArrayRaw(elements, elementCount,
                                                  GetAllocator());
    return true;
  }

 private:
  GenericDocument(const GenericDocument &);
  GenericDocument &operator=(const GenericDocument &);

  void ClearStack() {
    if (Allocator::kNeedFree)
      while (stack_.GetSize() >
             0)  // Here assumes all elements in stack array are GenericValue
                 // (Member is actually 2 GenericValue objects)
        (stack_.template Pop<ValueType>(1))->~ValueType();
    else
      stack_.Clear();
    stack_.ShrinkToFit();
  }

  void Destroy() { RAPIDJSON_DELETE(ownAllocator_); }

  static const size_t kDefaultStackCapacity = 1024;
  Allocator *allocator_;
  Allocator *ownAllocator_;
  internal::Stack<StackAllocator> stack_;
  ParseResult parseResult_;
};

typedef GenericDocument<UTF8<>> Document;


template <bool Const, typename ValueT>
class GenericArray {
 public:
  typedef GenericArray<true, ValueT> ConstArray;
  typedef GenericArray<false, ValueT> Array;
  typedef ValueT PlainType;
  typedef typename internal::MaybeAddConst<Const, PlainType>::Type ValueType;
  typedef ValueType *ValueIterator;  // This may be const or non-const iterator
  typedef const ValueT *ConstValueIterator;
  typedef typename ValueType::AllocatorType AllocatorType;
  typedef typename ValueType::StringRefType StringRefType;

  template <typename, typename>
  friend class GenericValue;

  GenericArray(const GenericArray &rhs) : value_(rhs.value_) {}
  GenericArray &operator=(const GenericArray &rhs) {
    value_ = rhs.value_;
    return *this;
  }
  ~GenericArray() {}

  SizeType Size() const { return value_.Size(); }
  SizeType Capacity() const { return value_.Capacity(); }
  bool Empty() const { return value_.Empty(); }
  void Clear() const { value_.Clear(); }
  ValueType &operator[](SizeType index) const { return value_[index]; }
  ValueIterator Begin() const { return value_.Begin(); }
  ValueIterator End() const { return value_.End(); }
  GenericArray Reserve(SizeType newCapacity, AllocatorType &allocator) const {
    value_.Reserve(newCapacity, allocator);
    return *this;
  }
  GenericArray PushBack(ValueType &value, AllocatorType &allocator) const {
    value_.PushBack(value, allocator);
    return *this;
  }
#if RAPIDJSON_HAS_CXX11_RVALUE_REFS
  GenericArray PushBack(ValueType &&value, AllocatorType &allocator) const {
    value_.PushBack(value, allocator);
    return *this;
  }
#endif  // RAPIDJSON_HAS_CXX11_RVALUE_REFS
  GenericArray PushBack(StringRefType value, AllocatorType &allocator) const {
    value_.PushBack(value, allocator);
    return *this;
  }
  template <typename T>
  RAPIDJSON_DISABLEIF_RETURN(
      (internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T>>),
      (const GenericArray &))
  PushBack(T value, AllocatorType &allocator) const {
    value_.PushBack(value, allocator);
    return *this;
  }
  GenericArray PopBack() const {
    value_.PopBack();
    return *this;
  }
  ValueIterator Erase(ConstValueIterator pos) const {
    return value_.Erase(pos);
  }
  ValueIterator Erase(ConstValueIterator first, ConstValueIterator last) const {
    return value_.Erase(first, last);
  }

#if RAPIDJSON_HAS_CXX11_RANGE_FOR
  ValueIterator begin() const { return value_.Begin(); }
  ValueIterator end() const { return value_.End(); }
#endif

 private:
  GenericArray();
  GenericArray(ValueType &value) : value_(value) {}
  ValueType &value_;
};


template <bool Const, typename ValueT>
class GenericObject {
 public:
  typedef GenericObject<true, ValueT> ConstObject;
  typedef GenericObject<false, ValueT> Object;
  typedef ValueT PlainType;
  typedef typename internal::MaybeAddConst<Const, PlainType>::Type ValueType;
  typedef GenericMemberIterator<Const, typename ValueT::EncodingType,
                                typename ValueT::AllocatorType>
      MemberIterator;  // This may be const or non-const iterator
  typedef GenericMemberIterator<true, typename ValueT::EncodingType,
                                typename ValueT::AllocatorType>
      ConstMemberIterator;
  typedef typename ValueType::AllocatorType AllocatorType;
  typedef typename ValueType::StringRefType StringRefType;
  typedef typename ValueType::EncodingType EncodingType;
  typedef typename ValueType::Ch Ch;

  template <typename, typename>
  friend class GenericValue;

  GenericObject(const GenericObject &rhs) : value_(rhs.value_) {}
  GenericObject &operator=(const GenericObject &rhs) {
    value_ = rhs.value_;
    return *this;
  }
  ~GenericObject() {}

  SizeType MemberCount() const { return value_.MemberCount(); }
  SizeType MemberCapacity() const { return value_.MemberCapacity(); }
  bool ObjectEmpty() const { return value_.ObjectEmpty(); }
  template <typename T>
  ValueType &operator[](T *name) const {
    return value_[name];
  }
  template <typename SourceAllocator>
  ValueType &operator[](
      const GenericValue<EncodingType, SourceAllocator> &name) const {
    return value_[name];
  }
#if RAPIDJSON_HAS_STDSTRING
  ValueType &operator[](const std::basic_string<Ch> &name) const {
    return value_[name];
  }
#endif
  MemberIterator MemberBegin() const { return value_.MemberBegin(); }
  MemberIterator MemberEnd() const { return value_.MemberEnd(); }
  GenericObject MemberReserve(SizeType newCapacity,
                              AllocatorType &allocator) const {
    value_.MemberReserve(newCapacity, allocator);
    return *this;
  }
  bool HasMember(const Ch *name) const { return value_.HasMember(name); }
#if RAPIDJSON_HAS_STDSTRING
  bool HasMember(const std::basic_string<Ch> &name) const {
    return value_.HasMember(name);
  }
#endif
  template <typename SourceAllocator>
  bool HasMember(
      const GenericValue<EncodingType, SourceAllocator> &name) const {
    return value_.HasMember(name);
  }
  MemberIterator FindMember(const Ch *name) const {
    return value_.FindMember(name);
  }
  template <typename SourceAllocator>
  MemberIterator FindMember(
      const GenericValue<EncodingType, SourceAllocator> &name) const {
    return value_.FindMember(name);
  }
#if RAPIDJSON_HAS_STDSTRING
  MemberIterator FindMember(const std::basic_string<Ch> &name) const {
    return value_.FindMember(name);
  }
#endif
  GenericObject AddMember(ValueType &name, ValueType &value,
                          AllocatorType &allocator) const {
    value_.AddMember(name, value, allocator);
    return *this;
  }
  GenericObject AddMember(ValueType &name, StringRefType value,
                          AllocatorType &allocator) const {
    value_.AddMember(name, value, allocator);
    return *this;
  }
#if RAPIDJSON_HAS_STDSTRING
  GenericObject AddMember(ValueType &name, std::basic_string<Ch> &value,
                          AllocatorType &allocator) const {
    value_.AddMember(name, value, allocator);
    return *this;
  }
#endif
  template <typename T>
  RAPIDJSON_DISABLEIF_RETURN(
      (internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T>>),
      (ValueType &))
  AddMember(ValueType &name, T value, AllocatorType &allocator) const {
    value_.AddMember(name, value, allocator);
    return *this;
  }
#if RAPIDJSON_HAS_CXX11_RVALUE_REFS
  GenericObject AddMember(ValueType &&name, ValueType &&value,
                          AllocatorType &allocator) const {
    value_.AddMember(name, value, allocator);
    return *this;
  }
  GenericObject AddMember(ValueType &&name, ValueType &value,
                          AllocatorType &allocator) const {
    value_.AddMember(name, value, allocator);
    return *this;
  }
  GenericObject AddMember(ValueType &name, ValueType &&value,
                          AllocatorType &allocator) const {
    value_.AddMember(name, value, allocator);
    return *this;
  }
  GenericObject AddMember(StringRefType name, ValueType &&value,
                          AllocatorType &allocator) const {
    value_.AddMember(name, value, allocator);
    return *this;
  }
#endif  // RAPIDJSON_HAS_CXX11_RVALUE_REFS
  GenericObject AddMember(StringRefType name, ValueType &value,
                          AllocatorType &allocator) const {
    value_.AddMember(name, value, allocator);
    return *this;
  }
  GenericObject AddMember(StringRefType name, StringRefType value,
                          AllocatorType &allocator) const {
    value_.AddMember(name, value, allocator);
    return *this;
  }
  template <typename T>
  RAPIDJSON_DISABLEIF_RETURN(
      (internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T>>),
      (GenericObject))
  AddMember(StringRefType name, T value, AllocatorType &allocator) const {
    value_.AddMember(name, value, allocator);
    return *this;
  }
  void RemoveAllMembers() { value_.RemoveAllMembers(); }
  bool RemoveMember(const Ch *name) const { return value_.RemoveMember(name); }
#if RAPIDJSON_HAS_STDSTRING
  bool RemoveMember(const std::basic_string<Ch> &name) const {
    return value_.RemoveMember(name);
  }
#endif
  template <typename SourceAllocator>
  bool RemoveMember(
      const GenericValue<EncodingType, SourceAllocator> &name) const {
    return value_.RemoveMember(name);
  }
  MemberIterator RemoveMember(MemberIterator m) const {
    return value_.RemoveMember(m);
  }
  MemberIterator EraseMember(ConstMemberIterator pos) const {
    return value_.EraseMember(pos);
  }
  MemberIterator EraseMember(ConstMemberIterator first,
                             ConstMemberIterator last) const {
    return value_.EraseMember(first, last);
  }
  bool EraseMember(const Ch *name) const { return value_.EraseMember(name); }
#if RAPIDJSON_HAS_STDSTRING
  bool EraseMember(const std::basic_string<Ch> &name) const {
    return EraseMember(ValueType(StringRef(name)));
  }
#endif
  template <typename SourceAllocator>
  bool EraseMember(
      const GenericValue<EncodingType, SourceAllocator> &name) const {
    return value_.EraseMember(name);
  }

#if RAPIDJSON_HAS_CXX11_RANGE_FOR
  MemberIterator begin() const { return value_.MemberBegin(); }
  MemberIterator end() const { return value_.MemberEnd(); }
#endif

 private:
  GenericObject();
  GenericObject(ValueType &value) : value_(value) {}
  ValueType &value_;
};

RAPIDJSON_NAMESPACE_END
RAPIDJSON_DIAG_POP

#endif  // RAPIDJSON_DOCUMENT_H_