heavyai::JSON Class Reference

#include <json.h>

Public Member Functions
	JSON ()
	JSON (const JSON &peer)
	JSON (JSON &&)=default
	JSON (const std::string &json)
	JSON (const char *json)
	JSON (const char *json, size_t len)
void	parse (const std::string &json)
void	parse (const char *json)
void	parse (const char *json, size_t len)
std::string	stringify () const
std::string	str () const
bool	b1 () const
uint64_t	u64 () const
int64_t	i64 () const
uint32_t	u32 () const
int32_t	i32 () const
uint16_t	u16 () const
int16_t	i16 () const
uint8_t	u8 () const
int8_t	i8 () const
double	d64 () const
float	f32 () const
bool	isString () const
bool	isNumber () const
bool	isBoolean () const
bool	isObject () const
bool	isArray () const
bool	isNull () const
bool	hasMember (const std::string &name) const
	operator std::string () const
	operator bool () const
	operator uint64_t () const
	operator int64_t () const
	operator uint32_t () const
	operator int32_t () const
	operator uint16_t () const
	operator int16_t () const
	operator uint8_t () const
	operator int8_t () const
	operator double () const
	operator float () const
JSON &	operator= (const JSON &peer)
JSON &	operator= (const std::string &item)
JSON &	operator= (const char *item)
JSON &	operator= (bool item)
JSON &	operator= (int32_t item)
JSON &	operator= (int64_t item)
JSON &	operator= (uint32_t item)
JSON &	operator= (uint64_t item)
JSON	operator[] (const std::string &name)
JSON	operator[] (const char *name)
JSON	operator[] (const std::string &name) const
JSON	operator[] (const char *name) const
template<typename T >
JSON	operator[] (T index)
JSON	operator[] (size_t index)
template<typename T >
JSON	operator[] (T index) const
JSON	operator[] (size_t index) const

Private Member Functions
	JSON (std::shared_ptr< rapidjson::Document > doc, rapidjson::Value *vptr, rapidjson::Document::AllocatorType &allo, const std::string &name)

Private Attributes
std::shared_ptr < rapidjson::Document >	doc_
rapidjson::Value *	vptr_
rapidjson::Document::AllocatorType &	allo_
const std::string	name_

Static Private Attributes
static std::string	kTypeNames []

Friends
bool	operator== (const JSON &json1, const JSON &json2)
bool	operator!= (const JSON &json1, const JSON &json2)
template<typename T >
bool	operator== (const JSON &json, const T &value)
template<typename T >
bool	operator== (const T &value, const JSON &json)
template<typename T >
bool	operator!= (const JSON &json, const T &value)
template<typename T >
bool	operator!= (const T &value, const JSON &json)

Detailed Description

Definition at line 67 of file json.h.

Constructor & Destructor Documentation

heavyai::JSON::JSON ( )

inline

Definition at line 75 of file json.h.

Referenced by operator[]().

      : doc_(std::make_shared<rapidjson::Document>())
      , vptr_(&*doc_)
      , allo_(doc_->GetAllocator())
      , name_("JSON") {}

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heavyai::JSON::JSON ( const JSON &  peer )

inline

Definition at line 82 of file json.h.

References allo_, and vptr_.

: JSON() { vptr_->CopyFrom(*peer.vptr_, allo_); }

heavyai::JSON::JSON ( JSON &&  )

default

heavyai::JSON::JSON ( const std::string &  json )

inline

Definition at line 88 of file json.h.

References parse().

: JSON() { parse(json); }

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heavyai::JSON::JSON ( const char *  json )

inline

Definition at line 91 of file json.h.

References parse().

: JSON() { parse(json); }

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heavyai::JSON::JSON ( const char *  json, size_t  len  )

inline

Definition at line 95 of file json.h.

References parse().

: JSON() { parse(json, len); }

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heavyai::JSON::JSON ( std::shared_ptr< rapidjson::Document >  doc, rapidjson::Value *  vptr, rapidjson::Document::AllocatorType &  allo, const std::string &  name  )

inlineprivate

Definition at line 382 of file json.h.

      : doc_(doc), vptr_(vptr), allo_(allo), name_(name) {}

Member Function Documentation

bool heavyai::JSON::b1 ( ) const

inline

Definition at line 133 of file json.h.

{ return static_cast<bool>(*this); }

double heavyai::JSON::d64 ( ) const

inline

Definition at line 147 of file json.h.

{ return static_cast<double>(*this); }

float heavyai::JSON::f32 ( ) const

inline

Definition at line 148 of file json.h.

{ return static_cast<float>(*this); }

bool heavyai::JSON::hasMember ( const std::string &  name ) const

inline

Definition at line 161 of file json.h.

References vptr_.

{ return vptr_->HasMember(name.c_str()); }

int16_t heavyai::JSON::i16 ( ) const

inline

Definition at line 142 of file json.h.

{ return static_cast<int16_t>(*this); }

int32_t heavyai::JSON::i32 ( ) const

inline

Definition at line 139 of file json.h.

{ return static_cast<int32_t>(*this); }

int64_t heavyai::JSON::i64 ( ) const

inline

Definition at line 136 of file json.h.

{ return static_cast<int64_t>(*this); }

int8_t heavyai::JSON::i8 ( ) const

inline

Definition at line 145 of file json.h.

{ return static_cast<int8_t>(*this); }

bool heavyai::JSON::isArray ( ) const

inline

Definition at line 156 of file json.h.

References vptr_.

{ return vptr_->IsArray(); }

bool heavyai::JSON::isBoolean ( ) const

inline

Definition at line 154 of file json.h.

References vptr_.

{ return vptr_->IsBool(); }

bool heavyai::JSON::isNull ( ) const

inline

Definition at line 157 of file json.h.

References vptr_.

{ return vptr_->IsNull(); }

bool heavyai::JSON::isNumber ( ) const

inline

Definition at line 153 of file json.h.

References vptr_.

{ return vptr_->IsNumber(); }

bool heavyai::JSON::isObject ( ) const

inline

Definition at line 155 of file json.h.

References vptr_.

{ return vptr_->IsObject(); }

bool heavyai::JSON::isString ( ) const

inline

Definition at line 152 of file json.h.

References vptr_.

{ return vptr_->IsString(); }

heavyai::JSON::operator bool ( ) const

inline

Definition at line 175 of file json.h.

References kTypeNames, name_, and vptr_.

                        {
    if (!vptr_->IsBool()) {
      throw std::runtime_error("expected JSON field '" + name_ +
                               "' to be Boolean but got [" +
                               kTypeNames[vptr_->GetType()] + "]");
    }
    return vptr_->GetBool();
  }

heavyai::JSON::operator double ( ) const

inline

Definition at line 256 of file json.h.

References kTypeNames, name_, and vptr_.

                          {
    if (!vptr_->IsDouble()) {
      throw std::runtime_error("can't convert JSON field '" + name_ +
                               "' to be floating point number from [" +
                               kTypeNames[vptr_->GetType()] + "]");
    }
    return vptr_->GetDouble();
  }

heavyai::JSON::operator float ( ) const

inline

Definition at line 265 of file json.h.

References kTypeNames, name_, and vptr_.

                         {
    if (!vptr_->IsDouble()) {
      throw std::runtime_error("can't convert JSON field '" + name_ +
                               "' to be floating point number from [" +
                               kTypeNames[vptr_->GetType()] + "]");
    }
    return static_cast<float>(vptr_->GetDouble());
  }

heavyai::JSON::operator int16_t ( ) const

inline

Definition at line 229 of file json.h.

References kTypeNames, name_, and vptr_.

                           {
    if (!vptr_->IsInt()) {
      throw std::runtime_error("can't convert JSON field '" + name_ +
                               "' to be signed 16-bit integer from [" +
                               kTypeNames[vptr_->GetType()] + "]");
    }
    return vptr_->GetInt();
  }

heavyai::JSON::operator int32_t ( ) const

inline

Definition at line 211 of file json.h.

References kTypeNames, name_, and vptr_.

                           {
    if (!vptr_->IsInt()) {
      throw std::runtime_error("can't convert JSON field '" + name_ +
                               "' to be signed 32-bit integer from [" +
                               kTypeNames[vptr_->GetType()] + "]");
    }
    return vptr_->GetInt();
  }

heavyai::JSON::operator int64_t ( ) const

inline

Definition at line 193 of file json.h.

References kTypeNames, name_, and vptr_.

                           {
    if (!vptr_->IsInt64()) {
      throw std::runtime_error("can't convert JSON field '" + name_ +
                               "' to be signed 64-bit integer from [" +
                               kTypeNames[vptr_->GetType()] + "]");
    }
    return vptr_->GetInt64();
  }

heavyai::JSON::operator int8_t ( ) const

inline

Definition at line 247 of file json.h.

References kTypeNames, name_, and vptr_.

                          {
    if (!vptr_->IsInt()) {
      throw std::runtime_error("can't convert JSON field '" + name_ +
                               "' to be signed 8-bit integer from [" +
                               kTypeNames[vptr_->GetType()] + "]");
    }
    return vptr_->GetInt();
  }

heavyai::JSON::operator std::string ( ) const

inline

Definition at line 166 of file json.h.

References kTypeNames, name_, and vptr_.

                             {
    if (!vptr_->IsString()) {
      throw std::runtime_error("expected JSON field '" + name_ +
                               "' to be String but got [" + kTypeNames[vptr_->GetType()] +
                               "]");
    }
    return std::string{vptr_->GetString(), vptr_->GetStringLength()};
  }

heavyai::JSON::operator uint16_t ( ) const

inline

Definition at line 220 of file json.h.

References kTypeNames, name_, and vptr_.

                            {
    if (!vptr_->IsUint()) {
      throw std::runtime_error("can't convert JSON field '" + name_ +
                               "' to be unsigned 16-bit integer from [" +
                               kTypeNames[vptr_->GetType()] + "]");
    }
    return vptr_->GetUint();
  }

heavyai::JSON::operator uint32_t ( ) const

inline

Definition at line 202 of file json.h.

References kTypeNames, name_, and vptr_.

                            {
    if (!vptr_->IsUint()) {
      throw std::runtime_error("can't convert JSON field '" + name_ +
                               "' to be unsigned 32-bit integer from [" +
                               kTypeNames[vptr_->GetType()] + "]");
    }
    return vptr_->GetUint();
  }

heavyai::JSON::operator uint64_t ( ) const

inline

Definition at line 184 of file json.h.

References kTypeNames, name_, and vptr_.

                            {
    if (!vptr_->IsUint64()) {
      throw std::runtime_error("can't convert JSON field '" + name_ +
                               "' to be unsigned 64-bit integer from [" +
                               kTypeNames[vptr_->GetType()] + "]");
    }
    return vptr_->GetUint64();
  }

heavyai::JSON::operator uint8_t ( ) const

inline

Definition at line 238 of file json.h.

References kTypeNames, name_, and vptr_.

                           {
    if (!vptr_->IsUint()) {
      throw std::runtime_error("can't convert JSON field '" + name_ +
                               "' to be unsigned 8-bit integer from [" +
                               kTypeNames[vptr_->GetType()] + "]");
    }
    return vptr_->GetUint();
  }

JSON& heavyai::JSON::operator= ( const JSON &  peer )

inline

Definition at line 276 of file json.h.

References allo_, and vptr_.

                                    {
    vptr_->CopyFrom(*peer.vptr_, allo_);
    return *this;
  }

JSON& heavyai::JSON::operator= ( const std::string &  item )

inline

Definition at line 281 of file json.h.

References allo_, and vptr_.

                                         {
    *vptr_ = rapidjson::Value().SetString(item.c_str(), allo_);
    return *this;
  }

JSON& heavyai::JSON::operator= ( const char *  item )

inline

Definition at line 286 of file json.h.

References allo_, and vptr_.

                                    {
    *vptr_ = rapidjson::Value().SetString(item, allo_);
    return *this;
  }

JSON& heavyai::JSON::operator= ( bool  item )

inline

Definition at line 291 of file json.h.

References vptr_.

                             {
    vptr_->SetBool(item);
    return *this;
  }

JSON& heavyai::JSON::operator= ( int32_t  item )

inline

Definition at line 296 of file json.h.

References vptr_.

                                {
    vptr_->SetInt(item);
    return *this;
  }

JSON& heavyai::JSON::operator= ( int64_t  item )

inline

Definition at line 301 of file json.h.

References vptr_.

                                {
    vptr_->SetInt64(item);
    return *this;
  }

JSON& heavyai::JSON::operator= ( uint32_t  item )

inline

Definition at line 306 of file json.h.

References vptr_.

                                 {
    vptr_->SetUint(item);
    return *this;
  }

JSON& heavyai::JSON::operator= ( uint64_t  item )

inline

Definition at line 311 of file json.h.

References vptr_.

                                 {
    vptr_->SetUint64(item);
    return *this;
  }

JSON heavyai::JSON::operator[] ( const std::string &  name )

inline

Definition at line 318 of file json.h.

Referenced by operator[]().

{ return (*this)[name.c_str()]; }

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JSON heavyai::JSON::operator[] ( const char *  name )

inline

Definition at line 319 of file json.h.

References allo_, doc_, f(), JSON(), and vptr_.

                                    {
    if (!vptr_->IsObject()) {
      vptr_->SetObject();
    }
    if (!vptr_->HasMember(name)) {
      vptr_->AddMember(
          rapidjson::Value(name, allo_).Move(), rapidjson::Value().Move(), allo_);
      auto f = vptr_->FindMember(name);
      // f necessary because AddMember inexplicably doesn't return the new member
      // https://stackoverflow.com/questions/52113291/which-object-reference-does-genericvalueaddmember-return
      return JSON(doc_, &f->value, allo_, name);
    }
    return JSON(doc_, &(*vptr_)[name], allo_, name);
  }

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JSON heavyai::JSON::operator[] ( const std::string &  name ) const

inline

Definition at line 334 of file json.h.

{ return (*this)[name.c_str()]; }

JSON heavyai::JSON::operator[] ( const char *  name ) const

inline

Definition at line 335 of file json.h.

References allo_, doc_, JSON(), kTypeNames, name_, and vptr_.

                                          {
    if (!vptr_->IsObject()) {
      throw std::runtime_error("JSON " + kTypeNames[vptr_->GetType()] + " field '" +
                               name_ + "' can't use operator []");
    }
    if (!vptr_->HasMember(name)) {
      throw std::runtime_error("JSON field '" + std::string(name) + "' not found");
    }
    return JSON(doc_, &(*vptr_)[name], allo_, name);
  }

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template<typename T >

JSON heavyai::JSON::operator[] ( T  index )

inline

Definition at line 347 of file json.h.

References operator[]().

                           {
    return operator[](static_cast<size_t>(index));
  }

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JSON heavyai::JSON::operator[] ( size_t  index )

inline

Definition at line 350 of file json.h.

References allo_, doc_, JSON(), to_string(), and vptr_.

                                {
    if (!vptr_->IsArray()) {
      vptr_->SetArray();
    }
    if (index >= vptr_->Size()) {
      throw std::runtime_error("JSON array index " + std::to_string(index) +
                               " out of range " + std::to_string(vptr_->Size()));
    }
    return JSON(doc_, &(*vptr_)[index], allo_, std::to_string(index));
  }

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template<typename T >

JSON heavyai::JSON::operator[] ( T  index ) const

inline

Definition at line 362 of file json.h.

References operator[]().

                                 {
    return operator[](static_cast<size_t>(index));
  }

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JSON heavyai::JSON::operator[] ( size_t  index ) const

inline

Definition at line 365 of file json.h.

References allo_, doc_, JSON(), kTypeNames, name_, to_string(), and vptr_.

                                      {
    if (!vptr_->IsArray()) {
      throw std::runtime_error("JSON " + kTypeNames[vptr_->GetType()] + " field '" +
                               name_ + "' can't use operator []");
    }
    if (index >= vptr_->Size()) {
      throw std::runtime_error("JSON array index " + std::to_string(index) +
                               " out of range " + std::to_string(vptr_->Size()));
    }
    return JSON(doc_, &(*vptr_)[index], allo_, std::to_string(index));
  }

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void heavyai::JSON::parse ( const std::string &  json )

inline

Definition at line 98 of file json.h.

References doc_.

Referenced by JSON().

                                    {
    if (doc_->Parse(json.c_str()).HasParseError()) {
      throw std::runtime_error("failed to parse json");
    }
  }

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void heavyai::JSON::parse ( const char *  json )

inline

Definition at line 105 of file json.h.

References doc_.

                               {
    if (doc_->Parse(json).HasParseError()) {
      throw std::runtime_error("failed to parse json");
    }
  }

void heavyai::JSON::parse ( const char *  json, size_t  len  )

inline

Definition at line 113 of file json.h.

References doc_.

                                           {
    if (doc_->Parse(json, len).HasParseError()) {
      throw std::runtime_error("failed to parse json");
    }
  }

std::string heavyai::JSON::str ( ) const

inline

Definition at line 131 of file json.h.

{ return static_cast<std::string>(*this); }

std::string heavyai::JSON::stringify ( ) const

inline

Definition at line 120 of file json.h.

References vptr_.

                              {
    rapidjson::StringBuffer buf;
    rapidjson::Writer<rapidjson::StringBuffer> wr(buf);
    vptr_->Accept(wr);
    return buf.GetString();
  }

uint16_t heavyai::JSON::u16 ( ) const

inline

Definition at line 141 of file json.h.

{ return static_cast<uint16_t>(*this); }

uint32_t heavyai::JSON::u32 ( ) const

inline

Definition at line 138 of file json.h.

{ return static_cast<uint32_t>(*this); }

uint64_t heavyai::JSON::u64 ( ) const

inline

Definition at line 135 of file json.h.

{ return static_cast<uint64_t>(*this); }

uint8_t heavyai::JSON::u8 ( ) const

inline

Definition at line 144 of file json.h.

{ return static_cast<uint8_t>(*this); }

Friends And Related Function Documentation

bool operator!= ( const JSON &  json1, const JSON &  json2  )

friend

Definition at line 408 of file json.h.

                                                             {
  return (*json1.vptr_ != *json2.vptr_);
}

template<typename T >

bool operator!= ( const JSON &  json, const T &  value  )

friend

Definition at line 424 of file json.h.

                                                         {
  return (*json.vptr_ != value);
}

template<typename T >

bool operator!= ( const T &  value, const JSON &  json  )

friend

Definition at line 428 of file json.h.

                                                         {
  return (json != value);
}

bool operator== ( const JSON &  json1, const JSON &  json2  )

friend

Definition at line 404 of file json.h.

                                                             {
  return (*json1.vptr_ == *json2.vptr_);
}

template<typename T >

bool operator== ( const JSON &  json, const T &  value  )

friend

Definition at line 415 of file json.h.

                                                         {
  return (*json.vptr_ == value);
}

template<typename T >

bool operator== ( const T &  value, const JSON &  json  )

friend

Definition at line 419 of file json.h.

                                                         {
  return (json == value);
}

Member Data Documentation

rapidjson::Document::AllocatorType& heavyai::JSON::allo_

private

Definition at line 70 of file json.h.

Referenced by JSON(), operator=(), and operator[]().

std::shared_ptr<rapidjson::Document> heavyai::JSON::doc_

private

Definition at line 68 of file json.h.

Referenced by operator[](), and parse().

std::string heavyai::JSON::kTypeNames[]

inlinestaticprivate

Initial value:

=
      {"Null", "False", "True", "Object", "Array", "String", "Number"}

Definition at line 378 of file json.h.

Referenced by operator bool(), operator double(), operator float(), operator int16_t(), operator int32_t(), operator int64_t(), operator int8_t(), operator std::string(), operator uint16_t(), operator uint32_t(), operator uint64_t(), operator uint8_t(), and operator[]().

const std::string heavyai::JSON::name_

private

Definition at line 71 of file json.h.

Referenced by operator bool(), operator double(), operator float(), operator int16_t(), operator int32_t(), operator int64_t(), operator int8_t(), operator std::string(), operator uint16_t(), operator uint32_t(), operator uint64_t(), operator uint8_t(), and operator[]().

rapidjson::Value* heavyai::JSON::vptr_

private

Definition at line 69 of file json.h.

Referenced by hasMember(), isArray(), isBoolean(), isNull(), isNumber(), isObject(), isString(), JSON(), operator bool(), operator double(), operator float(), operator int16_t(), operator int32_t(), operator int64_t(), operator int8_t(), operator std::string(), operator uint16_t(), operator uint32_t(), operator uint64_t(), operator uint8_t(), heavyai::operator!=(), operator=(), heavyai::operator==(), operator[](), and stringify().

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The documentation for this class was generated from the following file:

• /home/jenkins-slave/workspace/core-os-doxygen/Shared/json.h