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json.hh
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json.hh
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/* Masstree
* Eddie Kohler, Yandong Mao, Robert Morris
* Copyright (c) 2012-2013 President and Fellows of Harvard College
* Copyright (c) 2012-2013 Massachusetts Institute of Technology
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, subject to the conditions
* listed in the Masstree LICENSE file. These conditions include: you must
* preserve this copyright notice, and you cannot mention the copyright
* holders in advertising related to the Software without their permission.
* The Software is provided WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED. This
* notice is a summary of the Masstree LICENSE file; the license in that file
* is legally binding.
*/
// -*- c-basic-offset: 4 -*-
#ifndef JSON_HH
#define JSON_HH
#include "straccum.hh"
#include "str.hh"
#include "hashtable.hh"
#include <vector>
#include <utility>
#include <stdlib.h>
namespace lcdf {
template <typename P> class Json_proxy_base;
template <typename T> class Json_object_proxy;
template <typename T> class Json_object_str_proxy;
template <typename T> class Json_array_proxy;
class Json_get_proxy;
template <typename T, size_t S = sizeof(String::rep_type) - sizeof(T)>
struct Json_rep_item;
template <typename T> struct Json_rep_item<T, 4> {
T x;
int type;
};
template <typename T> struct Json_rep_item<T, 8> {
T x;
int padding;
int type;
};
class Json {
enum json_type { // order matters
j_string = -1, j_null = 0,
j_array = 1, j_object = 2, j_int = 3, j_double = 4, j_bool = 5
};
public:
static const Json null_json;
typedef int size_type;
typedef std::pair<const String, Json> object_value_type;
class object_iterator;
class const_object_iterator;
typedef Json array_value_type;
class array_iterator;
class const_array_iterator;
class iterator;
class const_iterator;
typedef bool (Json::*unspecified_bool_type)() const;
class unparse_manipulator;
// Constructors
inline Json();
inline Json(const Json& x);
template <typename P> inline Json(const Json_proxy_base<P>& x);
#if HAVE_CXX_RVALUE_REFERENCES
inline Json(Json&& x);
#endif
inline Json(int x);
inline Json(unsigned x);
inline Json(long x);
inline Json(unsigned long x);
inline Json(long long x);
inline Json(unsigned long long x);
inline Json(double x);
inline Json(bool x);
inline Json(const String &x);
inline Json(Str x);
inline Json(const char* x);
template <typename T> inline Json(const std::vector<T>& x);
template <typename T> inline Json(T first, T last);
template <typename T> inline Json(const HashTable<String, T>& x);
inline ~Json();
static inline const Json& make_null();
static inline Json make_array();
template <typename T, typename... U>
static inline Json make_array(T first, U... rest);
static inline Json make_array_reserve(int n);
static inline Json make_object();
static inline Json make_string(const String& x);
static inline Json make_string(const char* s, int len);
// Type information
inline bool truthy() const;
inline operator unspecified_bool_type() const;
inline bool operator!() const;
inline bool is_null() const;
inline bool is_int() const;
inline bool is_i() const;
inline bool is_double() const;
inline bool is_d() const;
inline bool is_number() const;
inline bool is_n() const;
inline bool is_bool() const;
inline bool is_b() const;
inline bool is_string() const;
inline bool is_s() const;
inline bool is_array() const;
inline bool is_a() const;
inline bool is_object() const;
inline bool is_o() const;
inline bool is_primitive() const;
inline bool empty() const;
inline size_type size() const;
inline bool shared() const;
void clear();
// Primitive extractors
inline long to_i() const;
inline uint64_t to_u64() const;
inline bool to_i(int& x) const;
inline bool to_i(unsigned& x) const;
inline bool to_i(long& x) const;
inline bool to_i(unsigned long& x) const;
inline bool to_i(long long& x) const;
inline bool to_i(unsigned long long& x) const;
inline long as_i() const;
inline long as_i(long default_value) const;
inline double to_d() const;
inline bool to_d(double& x) const;
inline double as_d() const;
inline double as_d(double default_value) const;
inline bool to_b() const;
inline bool to_b(bool& x) const;
inline bool as_b() const;
inline bool as_b(bool default_value) const;
inline String to_s() const;
inline bool to_s(Str& x) const;
inline bool to_s(String& x) const;
inline const String& as_s() const;
inline const String& as_s(const String& default_value) const;
// Object methods
inline size_type count(Str key) const;
inline const Json& get(Str key) const;
inline Json& get_insert(const String& key);
inline Json& get_insert(Str key);
inline Json& get_insert(const char* key);
inline long get_i(Str key) const;
inline double get_d(Str key) const;
inline bool get_b(Str key) const;
inline String get_s(Str key) const;
inline const Json_get_proxy get(Str key, Json& x) const;
inline const Json_get_proxy get(Str key, int& x) const;
inline const Json_get_proxy get(Str key, unsigned& x) const;
inline const Json_get_proxy get(Str key, long& x) const;
inline const Json_get_proxy get(Str key, unsigned long& x) const;
inline const Json_get_proxy get(Str key, long long& x) const;
inline const Json_get_proxy get(Str key, unsigned long long& x) const;
inline const Json_get_proxy get(Str key, double& x) const;
inline const Json_get_proxy get(Str key, bool& x) const;
inline const Json_get_proxy get(Str key, Str& x) const;
inline const Json_get_proxy get(Str key, String& x) const;
const Json& operator[](Str key) const;
inline Json_object_proxy<Json> operator[](const String& key);
inline Json_object_str_proxy<Json> operator[](Str key);
inline Json_object_str_proxy<Json> operator[](const char* key);
inline const Json& at(Str key) const;
inline Json& at_insert(const String& key);
inline Json& at_insert(Str key);
inline Json& at_insert(const char* key);
template <typename T> inline Json& set(const String& key, T value);
#if HAVE_CXX_RVALUE_REFERENCES
inline Json& set(const String& key, Json&& x);
#endif
inline Json& unset(Str key);
inline std::pair<object_iterator, bool> insert(const object_value_type& x);
inline object_iterator insert(object_iterator position,
const object_value_type& x);
inline object_iterator erase(object_iterator it);
inline size_type erase(Str key);
inline Json& merge(const Json& x);
template <typename P> inline Json& merge(const Json_proxy_base<P>& x);
// Array methods
inline const Json& get(size_type x) const;
inline Json& get_insert(size_type x);
inline const Json& operator[](size_type x) const;
inline Json_array_proxy<Json> operator[](size_type x);
inline const Json& at(size_type x) const;
inline Json& at_insert(size_type x);
inline const Json& back() const;
inline Json& back();
template <typename T> inline Json& push_back(T x);
template <typename P> inline Json& push_back(const Json_proxy_base<P>& x);
#if HAVE_CXX_RVALUE_REFERENCES
inline Json& push_back(Json&& x);
#endif
inline void pop_back();
inline Json& insert_back();
template <typename T, typename... U>
inline Json& insert_back(T first, U... rest);
inline Json* array_data();
// Iteration
inline const_object_iterator obegin() const;
inline const_object_iterator oend() const;
inline object_iterator obegin();
inline object_iterator oend();
inline const_object_iterator cobegin() const;
inline const_object_iterator coend() const;
inline const_array_iterator abegin() const;
inline const_array_iterator aend() const;
inline array_iterator abegin();
inline array_iterator aend();
inline const_array_iterator cabegin() const;
inline const_array_iterator caend() const;
inline const_iterator begin() const;
inline const_iterator end() const;
inline iterator begin();
inline iterator end();
inline const_iterator cbegin() const;
inline const_iterator cend() const;
// Unparsing
static inline unparse_manipulator indent_depth(int x);
static inline unparse_manipulator tab_width(int x);
static inline unparse_manipulator newline_terminator(bool x);
static inline unparse_manipulator space_separator(bool x);
inline String unparse() const;
inline String unparse(const unparse_manipulator& m) const;
inline void unparse(StringAccum& sa) const;
inline void unparse(StringAccum& sa, const unparse_manipulator& m) const;
// Parsing
inline bool assign_parse(const String& str);
inline bool assign_parse(const char* first, const char* last);
static inline Json parse(const String& str);
static inline Json parse(const char* first, const char* last);
// Assignment
inline Json& operator=(const Json& x);
#if HAVE_CXX_RVALUE_REFERENCES
inline Json& operator=(Json&& x);
#endif
template <typename P> inline Json& operator=(const Json_proxy_base<P>& x);
inline Json& operator++();
inline void operator++(int);
inline Json& operator--();
inline void operator--(int);
inline Json& operator+=(int x);
inline Json& operator+=(unsigned x);
inline Json& operator+=(long x);
inline Json& operator+=(unsigned long x);
inline Json& operator+=(long long x);
inline Json& operator+=(unsigned long long x);
inline Json& operator+=(double x);
inline Json& operator+=(const Json& x);
inline Json& operator-=(int x);
inline Json& operator-=(unsigned x);
inline Json& operator-=(long x);
inline Json& operator-=(unsigned long x);
inline Json& operator-=(long long x);
inline Json& operator-=(unsigned long long x);
inline Json& operator-=(double x);
inline Json& operator-=(const Json& x);
friend bool operator==(const Json& a, const Json& b);
inline void swap(Json& x);
private:
enum {
st_initial = 0, st_array_initial = 1, st_array_delim = 2,
st_array_value = 3, st_object_initial = 4, st_object_delim = 5,
st_object_key = 6, st_object_colon = 7, st_object_value = 8,
max_depth = 2048
};
struct ComplexJson {
int refcount;
int size;
ComplexJson()
: refcount(1) {
}
inline void ref();
inline void deref(json_type j);
private:
ComplexJson(const ComplexJson& x); // does not exist
};
struct ArrayJson;
struct ObjectItem;
struct ObjectJson;
union rep_type {
Json_rep_item<int64_t> i;
Json_rep_item<uint64_t> u;
Json_rep_item<double> d;
String::rep_type str;
struct {
ArrayJson* a;
int padding;
int type;
} a;
struct {
ObjectJson* o;
int padding;
int type;
} o;
struct {
ComplexJson* c;
int padding;
int type;
} x;
} u_;
inline ObjectJson* ojson() const;
inline ArrayJson* ajson() const;
long hard_to_i() const;
uint64_t hard_to_u64() const;
double hard_to_d() const;
bool hard_to_b() const;
String hard_to_s() const;
inline void force_number();
template <typename T> inline Json& add(T x);
template <typename T> inline Json& subtract(T x);
const Json& hard_get(Str key) const;
const Json& hard_get(size_type x) const;
Json& hard_get_insert(size_type x);
inline void uniqueify_object(bool convert);
void hard_uniqueify_object(bool convert);
inline void uniqueify_array(bool convert, int ncap);
void hard_uniqueify_array(bool convert, int ncap);
static unparse_manipulator default_manipulator;
bool unparse_is_complex() const;
static void unparse_indent(StringAccum &sa, const unparse_manipulator &m, int depth);
void hard_unparse(StringAccum &sa, const unparse_manipulator &m, int depth) const;
static inline const char *skip_space(const char *s, const char *end);
bool assign_parse(const String &str, const char *begin, const char *end);
static const char *parse_string(String &result, const String &str, const char *s, const char *end);
const char *parse_primitive(const String &str, const char *s, const char *end);
friend class object_iterator;
friend class const_object_iterator;
friend class array_iterator;
friend class const_array_iterator;
};
struct Json::ArrayJson : public ComplexJson {
int capacity;
Json a[0];
inline ArrayJson(int cap)
: capacity(cap) {
size = 0;
}
static ArrayJson* make(int n);
static void destroy(ArrayJson* a);
};
struct Json::ObjectItem {
std::pair<const String, Json> v_;
int next_;
explicit ObjectItem(const String &key, const Json& value, int next)
: v_(key, value), next_(next) {
}
};
struct Json::ObjectJson : public ComplexJson {
ObjectItem *os_;
int n_;
int capacity_;
std::vector<int> hash_;
ObjectJson()
: os_(), n_(0), capacity_(0) {
size = 0;
}
ObjectJson(const ObjectJson& x);
~ObjectJson();
void grow(bool copy);
int bucket(const char* s, int len) const {
return String::hashcode(s, s + len) & (hash_.size() - 1);
}
ObjectItem& item(int p) const {
return os_[p];
}
int find(const char* s, int len) const {
if (hash_.size()) {
int p = hash_[bucket(s, len)];
while (p >= 0) {
ObjectItem &oi = item(p);
if (oi.v_.first.equals(s, len))
return p;
p = oi.next_;
}
}
return -1;
}
int find_insert(const String& key, const Json& value);
inline Json& get_insert(const String& key) {
int p = find_insert(key, make_null());
return item(p).v_.second;
}
Json& get_insert(Str key);
void erase(int p);
size_type erase(Str key);
void rehash();
};
inline const Json& Json::make_null() {
return null_json;
}
inline void Json::ComplexJson::ref() {
if (refcount >= 0)
++refcount;
}
inline void Json::ComplexJson::deref(json_type j) {
if (refcount >= 1 && --refcount == 0) {
if (j == j_object)
delete static_cast<ObjectJson*>(this);
else
ArrayJson::destroy(static_cast<ArrayJson*>(this));
}
}
inline Json::ArrayJson* Json::ajson() const {
precondition(u_.x.type == j_null || u_.x.type == j_array);
return u_.a.a;
}
inline Json::ObjectJson* Json::ojson() const {
precondition(u_.x.type == j_null || u_.x.type == j_object);
return u_.o.o;
}
inline void Json::uniqueify_array(bool convert, int ncap) {
if (u_.x.type != j_array || !u_.a.a || u_.a.a->refcount != 1
|| (ncap > 0 && ncap > u_.a.a->capacity))
hard_uniqueify_array(convert, ncap);
}
inline void Json::uniqueify_object(bool convert) {
if (u_.x.type != j_object || !u_.o.o || u_.o.o->refcount != 1)
hard_uniqueify_object(convert);
}
class Json::const_object_iterator { public:
typedef std::pair<const String, Json> value_type;
typedef const value_type* pointer_type;
typedef const value_type& reference_type;
typedef std::forward_iterator_tag iterator_category;
const_object_iterator() {
}
typedef bool (const_object_iterator::*unspecified_bool_type)() const;
operator unspecified_bool_type() const {
return live() ? &const_object_iterator::live : 0;
}
bool live() const {
return i_ >= 0;
}
const value_type& operator*() const {
return j_->ojson()->item(i_).v_;
}
const value_type* operator->() const {
return &(**this);
}
const String& key() const {
return (**this).first;
}
const Json& value() const {
return (**this).second;
}
void operator++() {
++i_;
fix();
}
void operator++(int) {
++(*this);
}
private:
const Json* j_;
int i_;
const_object_iterator(const Json* j, int i)
: j_(j), i_(i) {
if (i_ >= 0)
fix();
}
void fix() {
ObjectJson* oj = j_->ojson();
retry:
if (!oj || i_ >= oj->n_)
i_ = -1;
else if (oj->item(i_).next_ == -2) {
++i_;
goto retry;
}
}
friend class Json;
friend bool operator==(const const_object_iterator&, const const_object_iterator&);
};
class Json::object_iterator : public const_object_iterator { public:
typedef value_type* pointer_type;
typedef value_type& reference_type;
object_iterator() {
}
value_type& operator*() const {
const_cast<Json*>(j_)->uniqueify_object(false);
return j_->ojson()->item(i_).v_;
}
value_type* operator->() const {
return &(**this);
}
Json& value() const {
return (**this).second;
}
private:
object_iterator(Json* j, int i)
: const_object_iterator(j, i) {
}
friend class Json;
};
inline bool operator==(const Json::const_object_iterator& a, const Json::const_object_iterator& b) {
return a.j_ == b.j_ && a.i_ == b.i_;
}
inline bool operator!=(const Json::const_object_iterator& a, const Json::const_object_iterator& b) {
return !(a == b);
}
class Json::const_array_iterator { public:
typedef Json::size_type difference_type;
typedef Json value_type;
typedef const Json* pointer_type;
typedef const Json& reference_type;
typedef std::random_access_iterator_tag iterator_category;
const_array_iterator() {
}
typedef bool (const_array_iterator::*unspecified_bool_type)() const;
operator unspecified_bool_type() const {
return live() ? &const_array_iterator::live : 0;
}
bool live() const {
ArrayJson* aj = j_->ajson();
return aj && i_ < aj->size;
}
const Json& operator*() const {
return j_->ajson()->a[i_];
}
const Json& operator[](difference_type i) const {
return j_->ajson()->a[i_ + i];
}
const Json* operator->() const {
return &(**this);
}
const Json& value() const {
return **this;
}
void operator++(int) {
++i_;
}
void operator++() {
++i_;
}
void operator--(int) {
--i_;
}
void operator--() {
--i_;
}
const_array_iterator& operator+=(difference_type x) {
i_ += x;
return *this;
}
const_array_iterator& operator-=(difference_type x) {
i_ -= x;
return *this;
}
private:
const Json* j_;
int i_;
const_array_iterator(const Json* j, int i)
: j_(j), i_(i) {
}
friend class Json;
friend class Json::array_iterator;
friend bool operator==(const const_array_iterator&, const const_array_iterator&);
friend bool operator<(const const_array_iterator&, const const_array_iterator&);
friend difference_type operator-(const const_array_iterator&, const const_array_iterator&);
};
class Json::array_iterator : public const_array_iterator { public:
typedef const Json* pointer_type;
typedef const Json& reference_type;
array_iterator() {
}
Json& operator*() const {
const_cast<Json*>(j_)->uniqueify_array(false, 0);
return j_->ajson()->a[i_];
}
Json& operator[](difference_type i) const {
const_cast<Json*>(j_)->uniqueify_array(false, 0);
return j_->ajson()->a[i_ + i];
}
Json* operator->() const {
return &(**this);
}
Json& value() const {
return **this;
}
private:
array_iterator(Json* j, int i)
: const_array_iterator(j, i) {
}
friend class Json;
};
inline bool operator==(const Json::const_array_iterator& a, const Json::const_array_iterator& b) {
return a.j_ == b.j_ && a.i_ == b.i_;
}
inline bool operator<(const Json::const_array_iterator& a, const Json::const_array_iterator& b) {
return a.j_ < b.j_ || (a.j_ == b.j_ && a.i_ < b.i_);
}
inline bool operator!=(const Json::const_array_iterator& a, const Json::const_array_iterator& b) {
return !(a == b);
}
inline bool operator<=(const Json::const_array_iterator& a, const Json::const_array_iterator& b) {
return !(b < a);
}
inline bool operator>(const Json::const_array_iterator& a, const Json::const_array_iterator& b) {
return b < a;
}
inline bool operator>=(const Json::const_array_iterator& a, const Json::const_array_iterator& b) {
return !(a < b);
}
inline Json::const_array_iterator operator+(Json::const_array_iterator a, Json::const_array_iterator::difference_type i) {
return a += i;
}
inline Json::const_array_iterator operator-(Json::const_array_iterator a, Json::const_array_iterator::difference_type i) {
return a -= i;
}
inline Json::const_array_iterator::difference_type operator-(const Json::const_array_iterator& a, const Json::const_array_iterator& b) {
precondition(a.j_ == b.j_);
return a.i_ - b.i_;
}
class Json::const_iterator { public:
typedef Pair<const String, Json&> value_type;
typedef const value_type* pointer_type;
typedef const value_type& reference_type;
#if CLICK_USERLEVEL
typedef std::forward_iterator_tag iterator_category;
#endif
const_iterator()
: value_(String(), *(Json*) 0) {
}
typedef bool (const_iterator::*unspecified_bool_type)() const;
operator unspecified_bool_type() const {
return live() ? &const_iterator::live : 0;
}
bool live() const {
return i_ >= 0;
}
const value_type& operator*() const {
return value_;
}
const value_type* operator->() const {
return &(**this);
}
const String& key() const {
return (**this).first;
}
const Json& value() const {
return (**this).second;
}
void operator++() {
++i_;
fix();
}
void operator++(int) {
++(*this);
}
private:
const Json* j_;
int i_;
value_type value_;
const_iterator(const Json* j, int i)
: j_(j), i_(i), value_(String(), *(Json*) 0) {
if (i_ >= 0)
fix();
}
void fix() {
if (j_->u_.x.type == j_object) {
ObjectJson* oj = j_->ojson();
retry:
if (!oj || i_ >= oj->n_)
i_ = -1;
else if (oj->item(i_).next_ == -2) {
++i_;
goto retry;
} else {
value_.~Pair();
new((void *) &value_) value_type(oj->item(i_).v_.first,
oj->item(i_).v_.second);
}
} else {
ArrayJson *aj = j_->ajson();
if (!aj || unsigned(i_) >= unsigned(aj->size))
i_ = -1;
else {
value_.~Pair();
new((void *) &value_) value_type(String(i_), aj->a[i_]);
}
}
}
friend class Json;
friend bool operator==(const const_iterator &, const const_iterator &);
};
class Json::iterator : public const_iterator { public:
typedef value_type* pointer_type;
typedef value_type& reference_type;
iterator() {
}
value_type& operator*() const {
if (j_->u_.x.c->refcount != 1)
uniqueify();
return const_cast<value_type&>(const_iterator::operator*());
}
value_type* operator->() const {
return &(**this);
}
Json& value() const {
return (**this).second;
}
private:
iterator(Json *j, int i)
: const_iterator(j, i) {
}
void uniqueify() const {
if (j_->u_.x.type == j_object)
const_cast<Json*>(j_)->hard_uniqueify_object(false);
else
const_cast<Json*>(j_)->hard_uniqueify_array(false, 0);
const_cast<iterator*>(this)->fix();
}
friend class Json;
};
inline bool operator==(const Json::const_iterator& a, const Json::const_iterator& b) {
return a.j_ == b.j_ && a.i_ == b.i_;
}
inline bool operator!=(const Json::const_iterator& a, const Json::const_iterator& b) {
return !(a == b);
}
template <typename P>
class Json_proxy_base {
public:
const Json& cvalue() const {
return static_cast<const P *>(this)->cvalue();
}
Json& value() {
return static_cast<P *>(this)->value();
}
operator const Json&() const {
return cvalue();
}
operator Json&() {
return value();
}
bool truthy() const {
return cvalue().truthy();
}
operator Json::unspecified_bool_type() const {
return cvalue();
}
bool operator!() const {
return !cvalue();
}
bool is_null() const {
return cvalue().is_null();
}
bool is_int() const {
return cvalue().is_int();
}
bool is_i() const {
return cvalue().is_i();
}
bool is_double() const {
return cvalue().is_double();
}
bool is_d() const {
return cvalue().is_d();
}
bool is_number() const {
return cvalue().is_number();
}
bool is_n() const {
return cvalue().is_n();
}
bool is_bool() const {
return cvalue().is_bool();
}
bool is_b() const {
return cvalue().is_b();
}
bool is_string() const {
return cvalue().is_string();
}
bool is_s() const {
return cvalue().is_s();
}
bool is_array() const {
return cvalue().is_array();
}
bool is_a() const {
return cvalue().is_a();
}
bool is_object() const {
return cvalue().is_object();
}
bool is_o() const {
return cvalue().is_o();
}
bool is_primitive() const {
return cvalue().is_primitive();
}
bool empty() const {
return cvalue().empty();
}
Json::size_type size() const {
return cvalue().size();
}
long to_i() const {
return cvalue().to_i();
}
uint64_t to_u64() const {
return cvalue().to_u64();
}
bool to_i(int& x) const {
return cvalue().to_i(x);
}
bool to_i(unsigned& x) const {
return cvalue().to_i(x);
}
bool to_i(long& x) const {
return cvalue().to_i(x);
}
bool to_i(unsigned long& x) const {
return cvalue().to_i(x);
}
bool to_i(long long& x) const {
return cvalue().to_i(x);
}
bool to_i(unsigned long long& x) const {
return cvalue().to_i(x);
}
long as_i() const {
return cvalue().as_i();
}
long as_i(long default_value) const {
return cvalue().as_i(default_value);
}
double to_d() const {
return cvalue().to_d();
}
bool to_d(double& x) const {
return cvalue().to_d(x);
}
double as_d() const {
return cvalue().as_d();
}
double as_d(double default_value) const {
return cvalue().as_d(default_value);
}
bool to_b() const {
return cvalue().to_b();
}
bool to_b(bool& x) const {
return cvalue().to_b(x);
}
bool as_b() const {
return cvalue().as_b();
}
bool as_b(bool default_value) const {
return cvalue().as_b(default_value);
}
String to_s() const {
return cvalue().to_s();
}
bool to_s(Str& x) const {
return cvalue().to_s(x);
}
bool to_s(String& x) const {
return cvalue().to_s(x);
}
const String& as_s() const {
return cvalue().as_s();
}
const String& as_s(const String& default_value) const {
return cvalue().as_s(default_value);
}
Json::size_type count(Str key) const {
return cvalue().count(key);
}
const Json& get(Str key) const {
return cvalue().get(key);
}
Json& get_insert(const String& key) {
return value().get_insert(key);
}
Json& get_insert(Str key) {
return value().get_insert(key);
}
Json& get_insert(const char* key) {
return value().get_insert(key);
}
long get_i(Str key) const {
return cvalue().get_i(key);
}
double get_d(Str key) const {
return cvalue().get_d(key);
}
bool get_b(Str key) const {
return cvalue().get_b(key);
}
String get_s(Str key) const {
return cvalue().get_s(key);
}
inline const Json_get_proxy get(Str key, Json& x) const;
inline const Json_get_proxy get(Str key, int& x) const;
inline const Json_get_proxy get(Str key, unsigned& x) const;
inline const Json_get_proxy get(Str key, long& x) const;
inline const Json_get_proxy get(Str key, unsigned long& x) const;
inline const Json_get_proxy get(Str key, long long& x) const;
inline const Json_get_proxy get(Str key, unsigned long long& x) const;
inline const Json_get_proxy get(Str key, double& x) const;
inline const Json_get_proxy get(Str key, bool& x) const;