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jsonhead.cpp
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jsonhead.cpp
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//===----------------------------------------------------------------------===//
//
// Json Parser for large data set
//
//===----------------------------------------------------------------------===//
//
// Copyright (C) 2019. rollrat. All Rights Reserved.
//
//===----------------------------------------------------------------------===//
#include "jsonhead.h"
#include <sstream>
#include <set>
///===-----------------------------------------------------------------------===
///
/// Json Lexer
///
///===-----------------------------------------------------------------------===
jsonhead::json_lexer::json_lexer(std::string file_path, long long buffer_size)
: ifs(file_path), curtok(json_token::none), buffer_size(buffer_size) {
ifs.seekg(0, std::ios::end);
file_size = ifs.tellg();
ifs.seekg(0, std::ios::beg);
buffer = new char[buffer_size];
memset(buffer, 0, buffer_size);
if (!ifs)
throw std::runtime_error("file not found!");
}
jsonhead::json_lexer::~json_lexer() {
delete[] buffer;
ifs.close();
}
bool jsonhead::json_lexer::next() {
this->curstr = String();
while (true) {
auto cur = next_ch();
if (cur == 0) {
curtok = json_token::eof;
return true;
}
switch (cur)
{
case ' ':
case '\r':
case '\n':
case '\t':
continue;
case ',':
this->curtok = json_token::v_comma;
this->curstr = String(cur, 1);
break;
case ':':
this->curtok = json_token::v_pair;
this->curstr = String(cur, 1);
break;
case '{':
this->curtok = json_token::object_starts;
this->curstr = String(cur, 1);
break;
case '}':
this->curtok = json_token::object_ends;
this->curstr = String(cur, 1);
break;
case '[':
this->curtok = json_token::array_starts;
this->curstr = String(cur, 1);
break;
case ']':
this->curtok = json_token::array_ends;
this->curstr = String(cur, 1);
break;
case 't':
case 'f':
case 'n':
{
StringBuilder ss(10);
while (cur && isalpha(cur))
{
ss.Append(cur);
cur = next_ch();
}
prev();
auto s = ss.ToString();
if (s == "true")
this->curtok = json_token::v_true;
else if (s == "false")
this->curtok = json_token::v_false;
else if (s == "null")
this->curtok = json_token::v_null;
else
return false;
this->curstr = s;
}
break;
case '"':
{
StringBuilder ss;
// donot parse \uXXXX unicode style character
while (cur = next_ch())
{
if (cur == '"') break;
#if REAL_JSON
// escapes
if (1 <= cur && cur <= 19) return false;
#endif
#if !CONFIG_DISABLE_UTF8
// We will be support wide characters.
if (cur < 0) {
unsigned char cc = cur;
int len = 0;
if ((cc & 0xfc) == 0xfc) {
len = 6;
}
else if ((cc & 0xf8) == 0xf8) {
len = 5;
}
else if ((cc & 0xf0) == 0xf0) {
len = 4;
}
else if ((cc & 0xe0) == 0xe0) {
len = 3;
}
else if ((cc & 0xc0) == 0xc0) {
len = 2;
}
for (; --len; cur = next_ch())
ss.Append(cur);
ss.Append(cur);
continue;
}
#endif
ss.Append(cur);
if (cur == '\\') {
if (!(cur = next_ch()))
return false;
ss.Append(cur);
}
}
curtok = json_token::v_string;
curstr = ss.ToString();
}
break;
default:
{
StringBuilder ss;
if (cur == '-') {
ss.Append(cur);
cur = next_ch();
}
// [0-9]+
while (cur && isdigit(cur)) {
ss.Append(cur);
cur = next_ch();
}
// [0-9]+.[0-9]+
if (cur && cur == '.') {
cur = next_ch();
if (!cur || !isdigit(cur))
return false;
while (cur && isdigit(cur)) {
ss.Append(cur);
cur = next_ch();
}
}
// [0-9]+[Ee][+-]?[0-9]+
// [0-9]+.[0-9]+[Ee][+-]?[0-9]+
if (cur && (cur == 'E' || cur == 'e')) {
cur = next_ch();
if (!cur || !(cur == '+' || cur == '-' || isdigit(cur)))
return false;
if (cur == '+' || cur == '-') {
ss.Append(cur);
cur = next_ch();
}
if (!cur || !isdigit(cur))
return false;
while (cur && isdigit(cur)) {
ss.Append(cur);
cur = next_ch();
}
}
prev();
curtok = json_token::v_number;
curstr = ss.ToString();
}
}
return true;
}
}
jsonhead::json_token jsonhead::json_lexer::type() const {
return this->curtok;
}
jsonhead::String jsonhead::json_lexer::str() {
return std::move(this->curstr);
}
const char *jsonhead::json_lexer::gbuffer() const {
return pointer;
}
inline void jsonhead::json_lexer::buffer_refresh() {
current_block_size = ifs.read(buffer, buffer_size).gcount();
read_size += current_block_size;
pointer = buffer;
}
inline bool jsonhead::json_lexer::require_refresh() {
return pointer == nullptr || buffer + current_block_size == pointer;
}
char jsonhead::json_lexer::next_ch() {
if (require_refresh()) {
if (ifs.eof())
return (char)0;
buffer_refresh();
}
return *pointer++;
}
void jsonhead::json_lexer::prev() {
pointer--;
}
///===-----------------------------------------------------------------------===
///
/// Json Model
///
///===-----------------------------------------------------------------------===
std::ostream& jsonhead::json_object::print(std::ostream& os, bool format, std::string indent) const {
if (!format)
os << '{';
else
os << "{\n";
for (auto it = keyvalue.rbegin(); it != keyvalue.rend(); ++it) {
if (!format) {
os << '\"' << it->first << "\":";
it->second->print(os);
}
else {
os << indent << " \"" << it->first << "\": ";
it->second->print(os, true, indent + " ");
}
if (std::next(it) != keyvalue.rend()) {
if (!format)
os << ',';
else
os << ",\n";
}
}
if (!format)
os << '}';
else
os << '\n' << indent << "}";
return os;
}
std::ostream& jsonhead::json_array::print(std::ostream& os, bool format, std::string indent) const {
if (array.size() > 0) {
if (!format)
os << '[';
else
os << "[\n";
for (auto it = array.rbegin(); it != array.rend(); ++it) {
if (!format)
(*it)->print(os);
else {
os << indent << " ";
(*it)->print(os, true, indent + " ");
}
if (std::next(it) != array.rend()) {
if (!format)
os << ',';
else
os << ",\n";
}
}
if (!format)
os << ']';
else
os << '\n' << indent << "]";
}
else {
os << "[]";
}
return os;
}
std::ostream& jsonhead::json_numeric::print(std::ostream& os, bool format, std::string indent) const {
os << numstr;
return os;
}
std::ostream& jsonhead::json_string::print(std::ostream& os, bool format, std::string indent) const {
os << '"' << str << '"';
return os;
}
std::ostream& jsonhead::json_state::print(std::ostream& os, bool format, std::string indent) const {
switch (type)
{
case json_token::v_false:
os << "false";
break;
case json_token::v_true:
os << "true";
break;
case json_token::v_null:
os << "null";
break;
}
return os;
}
///===-----------------------------------------------------------------------===
///
/// Json Parser
///
///===-----------------------------------------------------------------------===
static int goto_table[][20] =
{
{ 0, 1, 3, 2, 0, 0, 0, 0, 4, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 28 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -2 },
{ 0, 0, 0, 0, 7, 8, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0 },
{ 0, 0, 16, 15, 0, 0, 11, 12, 4, 0, 0, 0, 5, 10, 17, 18, 19, 13, 14, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, -5, -5, 0, 0, -5, 0, 0, 0, 0, 0, -5 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, -7, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 22, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, -3, -3, 0, 0, -3, 0, 0, 0, 0, 0, -3 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 23, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 24, 0, 0, -10, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, -12, -12, 0, 0, -12, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, -13, -13, 0, 0, -13, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, -14, -14, 0, 0, -14, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, -15, -15, 0, 0, -15, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, -16, -16, 0, 0, -16, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, -17, -17, 0, 0, -17, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, -18, -18, 0, 0, -18, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, -6, -6, 0, 0, -6, 0, 0, 0, 0, 0, -6 },
{ 0, 0, 0, 0, 25, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0 },
{ 0, 0, 16, 15, 0, 0, 0, 26, 4, 0, 0, 0, 5, 0, 17, 18, 19, 13, 14, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, -4, -4, 0, 0, -4, 0, 0, 0, 0, 0, -4 },
{ 0, 0, 16, 15, 0, 0, 27, 12, 4, 0, 0, 0, 5, 0, 17, 18, 19, 13, 14, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, -8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, -9, -9, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -11, 0, 0, 0, 0, 0, 0 },
};
static int production[] = {
1, 1, 1, 2, 3, 2, 3, 1, 3, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1
};
static int group_table[] ={
0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 6, 6, 7, 7, 7, 7, 7, 7, 7
};
#define ACCEPT_INDEX 28
jsonhead::json_parser::json_parser(std::string file_path, size_t pool_capacity)
: lex(file_path)
#ifdef CONFIG_ALLOCATOR
, jarray_pool(pool_capacity), jobject_pool(pool_capacity), jstring_pool(pool_capacity),
jnumeric_pool(pool_capacity), jstate_pool(pool_capacity)
#endif
{
}
bool jsonhead::json_parser::step() {
if (!_reduce && !lex.next()) return false;
_reduce = false;
if (stack.empty())
stack.push(0);
bool require_reduce = false;
int code = goto_table[stack.top()][(int)lex.type()];
if (code == ACCEPT_INDEX)
{
// End of json format
_entry = values.top();
values.pop();
return false;
}
else if (code > 0)
{
// Shift
stack.push(code);
contents.push(lex.str());
}
else if (code < 0)
{
// Reduce
reduce(code);
_reduce = true;
}
else
{
// Panic mode
this->_error = true;
return false;
}
return true;
}
void jsonhead::json_parser::reduce(int code) {
int reduce_production = -code;
// Reduce Stack
for (int i = 0; i < production[reduce_production]; i++) {
stack.pop();
}
stack.push(goto_table[stack.top()][group_table[reduce_production]]);
// 0: S' -> JSON
// 1: JSON -> OBJECT
// 2: JSON -> ARRAY
// 3: ARRAY -> [ ]
// 4: ARRAY -> [ ELEMENTS ]
// 5: OBJECT -> { }
// 6: OBJECT -> { MEMBERS }
// 7: MEMBERS -> PAIR
// 8: MEMBERS -> PAIR , MEMBERS
// 9: PAIR -> v_string : VALUE
// 10: ELEMENTS -> VALUE
// 11: ELEMENTS -> VALUE , ELEMENTS
// 12: VALUE -> v_string
// 13: VALUE -> v_number
// 14: VALUE -> OBJECT
// 15: VALUE -> ARRAY
// 16: VALUE -> true
// 17: VALUE -> false
// 18: VALUE -> null
switch (reduce_production)
{
//case 0:
//case 1:
//case 2:
case 3:
contents.pop();
contents.pop();
#ifndef CONFIG_ALLOCATOR
values.push(jarray(new json_array));
#else
values.push(jarray(jarray_pool.allocate()));
#endif
break;
case 4:
contents.pop();
contents.pop();
break;
case 5:
contents.pop();
contents.pop();
#ifndef CONFIG_ALLOCATOR
values.push(jobject(new json_object()));
#else
values.push(jobject(jobject_pool.allocate()));
#endif
break;
case 6:
contents.pop();
contents.pop();
break;
case 7:
{
#ifndef CONFIG_ALLOCATOR
auto jo = jobject(new json_object());
#else
auto jo = jobject(jobject_pool.allocate());
#endif
if (!(_skip_literal && values.top()->is_string()))
#ifndef CONFIG_STABLE
jo->keyvalue[contents.top()] = std::move(values.top());
#else
jo->keyvalue.push_back({contents.top(), std::move(values.top())});
#endif
#ifndef CONFIG_ALLOCATOR
else
#ifndef CONFIG_STABLE
jo->keyvalue[contents.top()] = std::shared_ptr<json_string>(new json_string(std::move(String())));
#else
jo->keyvalue.push_back({contents.top(), std::shared_ptr<json_string>(new json_string(std::move(String())))});
#endif
#else
else
#ifndef CONFIG_STABLE
jo->keyvalue[contents.top()] = jstring_pool.allocate(std::move(String()));
#else
jo->keyvalue.push_back({contents.top(), jstring_pool.allocate(std::move(String()))});
#endif
#endif
values.pop();
values.push(jo);
contents.pop();
}
break;
case 8:
{
contents.pop();
auto jo = values.top(); values.pop();
if (!(_skip_literal && values.top()->is_string()))
#ifndef CONFIG_STABLE
((json_object*)&*jo)->keyvalue[contents.top()] = std::move(values.top());
#else
((json_object*)&*jo)->keyvalue.push_back({contents.top(), std::move(values.top())});
#endif
#ifndef CONFIG_ALLOCATOR
else
#ifndef CONFIG_STABLE
((json_object*)&*jo)->keyvalue[contents.top()] = std::shared_ptr<json_string>(new json_string(std::move(String())));
#else
((json_object*)&*jo)->keyvalue.push_back({contents.top(), std::shared_ptr<json_string>(new json_string(std::move(String())))});
#endif
#else
else
#ifndef CONFIG_STABLE
((json_object*)&*jo)->keyvalue[contents.top()] = jstring_pool.allocate(std::move(String()));
#else
((json_object*)&*jo)->keyvalue.push_back({contents.top(), jstring_pool.allocate(std::move(String()))});
#endif
#endif
values.pop();
values.push(jo);
contents.pop();
}
break;
case 9:
contents.pop();
break;
case 10:
{
#ifndef CONFIG_ALLOCATOR
auto ja = jarray(new json_array());
#else
auto ja = jarray(jarray_pool.allocate());
#endif
if (!(_skip_literal && values.top()->is_string()))
ja->array.push_back(values.top());
values.pop();
values.push(ja);
}
break;
case 11:
{
auto ja = values.top(); values.pop();
if (!(_skip_literal && values.top()->is_string()))
((json_array*)&*ja)->array.push_back(values.top());
values.pop();
values.push(ja);
contents.pop();
}
break;
case 12:
#ifndef CONFIG_ALLOCATOR
values.push(std::shared_ptr<json_string>(new json_string(contents.top())));
#else
values.push(jstring_pool.allocate(contents.top()));
#endif
contents.pop();
break;
case 13:
#ifndef CONFIG_ALLOCATOR
{
auto numeric = std::shared_ptr<json_numeric>(new json_numeric(contents.top()));
#ifdef CONFIG_CHECK_INTEGER
if (!contents.top().Contains('.'))
numeric->is_integer = true;
#endif
values.push(numeric);
}
#else
values.push(jnumeric_pool.allocate(contents.top()));
#endif
contents.pop();
break;
//case 14:
//case 15:
case 16:
#ifndef CONFIG_ALLOCATOR
values.push(std::shared_ptr<json_state>(new json_state(jsonhead::json_token::v_true)));
#else
values.push(jstate_pool.allocate(jsonhead::json_token::v_true));
#endif
contents.pop();
break;
case 17:
#ifndef CONFIG_ALLOCATOR
values.push(std::shared_ptr<json_state>(new json_state(jsonhead::json_token::v_false)));
#else
values.push(jstate_pool.allocate(jsonhead::json_token::v_false));
#endif
contents.pop();
break;
case 18:
#ifndef CONFIG_ALLOCATOR
values.push(std::shared_ptr<json_state>(new json_state(jsonhead::json_token::v_null)));
#else
values.push(jstate_pool.allocate(jsonhead::json_token::v_null));
#endif
contents.pop();
break;
}
}
///===-----------------------------------------------------------------------===
///
/// Json Tree
///
///===-----------------------------------------------------------------------===
std::ostream& jsonhead::json_tree_node::print(std::ostream& os, std::string indent) const {
if (this->type == json_tree_type::boolean)
os << "boolean";
else if (this->type == json_tree_type::string)
os << "string";
else if (this->type == json_tree_type::numeric)
os << "numeric";
else if (this->type == json_tree_type::none)
os << "null";
return os;
}
jsonhead::json_tree_array::json_tree_array()
: json_tree_node(json_tree_type::array) {
}
bool jsonhead::json_tree_array::operator==(const json_tree_node& node) {
if (type != node.type)
return false;
auto jta = (json_tree_array *)(&node);
if (array.size() != jta->array.size())
return false;
for (int i = 0; i < array.size(); i++)
if (*array[i] != *jta->array[i])
return false;
return true;
}
bool jsonhead::json_tree_array::check_consistency() {
if (array.size() == 0)
return true;
auto f = array[0];
#ifdef CONFIG_DISABLE_TOP_LEVEL_COMPRESS
if (f->type == json_tree_type::string || f->type == json_tree_type::numeric ||
f->type == json_tree_type::boolean)
return false;
#endif
for (auto it = array.begin() + 1; it != array.end(); it++)
if (*f != **it)
return false;
return true;
}
#ifdef CONFIG_LAZY_CHECK
static jsonhead::jtree_value select_safe_array(jsonhead::jtree_value d1, jsonhead::jtree_value d2);
static jsonhead::jtree_value select_object(jsonhead::jtree_value d1, jsonhead::jtree_value d2) {
using namespace jsonhead;
json_tree_object* obj = new json_tree_object();
std::map<String, int> keypair;
auto t1 = (json_tree_object*)(&*d1);
auto t2 = (json_tree_object*)(&*d2);
std::vector<json_tree_object*> vv{(json_tree_object*)&*d1, (json_tree_object*)&*d2};
for (auto jto : vv) {
for (auto it = jto->keyvalue.rbegin(); it != jto->keyvalue.rend(); it++) {
auto& kp = *it;
if (keypair.find(kp.first) == keypair.end()) {
obj->keyvalue.push_back({kp.first, kp.second});
keypair[kp.first] = keypair.size();
}
else if (obj->keyvalue[keypair[kp.first]].second->type == json_tree_type::none)
obj->keyvalue[keypair[kp.first]] = {kp.first, kp.second};
else if (obj->keyvalue[keypair[kp.first]].second->type == json_tree_type::safe_array)
obj->keyvalue[keypair[kp.first]] = {kp.first, select_safe_array(obj->keyvalue[keypair[kp.first]].second, kp.second)};
else if (obj->keyvalue[keypair[kp.first]].second->type == json_tree_type::object)
obj->keyvalue[keypair[kp.first]] = {kp.first, select_object(obj->keyvalue[keypair[kp.first]].second, kp.second)};
}
}
return jtree_object(obj);
}
static jsonhead::jtree_value select_safe_array(jsonhead::jtree_value d1, jsonhead::jtree_value d2) {
using namespace jsonhead;
auto t1 = (json_tree_safe_array*)(&*d1);
auto t2 = (json_tree_safe_array*)(&*d2);
if (t1->element_size == 0 || t1->element_type->type == json_tree_type::none)
return d2;
if (t2->element_size == 0 || t2->element_type->type == json_tree_type::none)
return d1;
if (t1->element_size < t2->element_size)
return d2;
if (t1->element_size > t2->element_size)
return d1;
if (t1->element_type->type == json_tree_type::safe_array) {
json_tree_safe_array* sa = new json_tree_safe_array(select_safe_array(t1->element_type, t2->element_type),
std::max(t1->element_size, t2->element_size));
return jtree_safe_array(sa);
}
else if (t1->element_type->type == json_tree_type::object) {
json_tree_safe_array* sa = new json_tree_safe_array(select_object(t1->element_type, t2->element_type),
std::max(t1->element_size, t2->element_size));
return jtree_safe_array(sa);
}
return d1;
}
#else
static bool check_object(jsonhead::jtree_value dest, jsonhead::jtree_value src) {
auto t1 = (jsonhead::json_tree_object*)(&*dest);
auto t2 = (jsonhead::json_tree_object*)(&*src);
return t1->keyvalue.size() < t2->keyvalue.size();
}
static bool check_safe_array(jsonhead::jtree_value dest, jsonhead::jtree_value src) {
auto t1 = (jsonhead::json_tree_safe_array*)(&*dest);
auto t2 = (jsonhead::json_tree_safe_array*)(&*src);
if (t1->element_size == 0 || t1->element_type->type == jsonhead::json_tree_type::none)
return true;
if (t1->element_size < t2->element_size)
return true;
if (t1->element_type->type == jsonhead::json_tree_type::safe_array)
return check_safe_array(t1->element_type, t2->element_type);
if (t1->element_type->type == jsonhead::json_tree_type::object)
return check_object(t1->element_type, t2->element_type);
return false;
}
#endif
jsonhead::jtree_safe_array jsonhead::json_tree_array::to_safe_array() {
if (array.size() == 0) {
return jtree_safe_array(new json_tree_safe_array(jtree_value(new json_tree_node(json_tree_type::none)), array.size()));
}
#ifndef CONFIG_STRICT
if (array[0]->type == json_tree_type::object) {
json_tree_object* obj = new json_tree_object();
std::map<String, int> keypair;
obj->print_reverse = true;
for (auto& it : array) {
auto tob = ((json_tree_object*)(&*it));
for (auto it = tob->keyvalue.rbegin(); it != tob->keyvalue.rend(); it++) {
auto& kp = *it;
#ifdef CONFIG_LAZY_CHECK
if (keypair.find(kp.first) == keypair.end()) {
obj->keyvalue.push_back({kp.first, kp.second});
keypair[kp.first] = keypair.size();
}
else if (obj->keyvalue[keypair[kp.first]].second->type == json_tree_type::none)
obj->keyvalue[keypair[kp.first]] = {kp.first, kp.second};
else if (obj->keyvalue[keypair[kp.first]].second->type == json_tree_type::safe_array)
obj->keyvalue[keypair[kp.first]] = {kp.first, select_safe_array(obj->keyvalue[keypair[kp.first]].second, kp.second)};
else if (obj->keyvalue[keypair[kp.first]].second->type == json_tree_type::object)
obj->keyvalue[keypair[kp.first]] = {kp.first, select_object(obj->keyvalue[keypair[kp.first]].second, kp.second)};
#else
if (keypair.find(kp.first) == keypair.end()) {
obj->keyvalue.push_back({kp.first, kp.second});
keypair[kp.first] = keypair.size();
}
else if (obj->keyvalue[keypair[kp.first]].second->type == json_tree_type::none)
obj->keyvalue[keypair[kp.first]] = {kp.first, kp.second};
else if (obj->keyvalue[keypair[kp.first]].second->type == json_tree_type::safe_array)
{
if (check_safe_array(obj->keyvalue[keypair[kp.first]].second, kp.second))
obj->keyvalue[keypair[kp.first]] = {kp.first, kp.second};
}
else if (obj->keyvalue[keypair[kp.first]].second->type == json_tree_type::object)
{
if (check_object(obj->keyvalue[keypair[kp.first]].second, kp.second))
obj->keyvalue[keypair[kp.first]] = {kp.first, kp.second};
}
#endif
}
}
return jtree_safe_array(new json_tree_safe_array(jtree_object(obj), array.size()));
}
#endif
return jtree_safe_array(new json_tree_safe_array(array[0], array.size()));
}
std::ostream& jsonhead::json_tree_array::print(std::ostream& os, std::string indent) const {
if (array.size() > 0) {
os << "[\n";
for (auto it = array.rbegin(); it != array.rend(); ++it) {
os << indent << " ";
(*it)->print(os, indent + " ");
if (std::next(it) != array.rend()) {
os << ",\n";
}
}
os << '\n' << indent << "]";
}
else {
os << "[]";
}
return os;
}
jsonhead::json_tree_safe_array::json_tree_safe_array(jtree_value elem_type, size_t elem_size) :
json_tree_node(json_tree_type::safe_array), element_size(elem_size), element_type(elem_type) {
}
bool jsonhead::json_tree_safe_array::operator==(const json_tree_node& node) {
if (type != node.type)
return false;
auto jta = (json_tree_safe_array *)(&node);
#ifdef CONFIG_IGNORE_ELEMENT_SIZE
return *element_type == *jta->element_type;
#else
return element_size == jta->element_size && *element_type == *jta->element_type;
#endif
}
std::ostream& jsonhead::json_tree_safe_array::print(std::ostream& os, std::string indent) const {
if (element_type->type == json_tree_type::boolean ||
element_type->type == json_tree_type::none ||
element_type->type == json_tree_type::numeric ||
element_type->type == json_tree_type::string) {
os << "[ ";
element_type->print(os);
os << " ]";
}
else {
os << "[\n";
os << indent << " ";
element_type->print(os, indent + " ");
#ifndef CONFIG_IGNORE_ELEMENT_SIZE
os << " x " << element_size;
#endif
os << '\n' << indent << "]";
}
return os;
}
jsonhead::json_tree_object::json_tree_object()
: json_tree_node(json_tree_type::object) {
}
bool jsonhead::json_tree_object::operator==(const json_tree_node& node) {
if (type != node.type)
return false;
auto jto = (json_tree_object *)(&node);
#ifdef CONFIG_STRICT
if (keyvalue.size() != jto->keyvalue.size())
return false;
for (int i = 0; i < keyvalue.size(); i++)
if (keyvalue[i].first != jto->keyvalue[i].first ||
*keyvalue[i].second != *jto->keyvalue[i].second)
return false;
#else
// Assume all objects of the same array are the same type
#endif
return true;
}
std::ostream& jsonhead::json_tree_object::print(std::ostream& os, std::string indent) const
{
os << "{\n";
if (!print_reverse) {
for (auto it = keyvalue.rbegin(); it != keyvalue.rend(); ++it) {
os << indent << " \"" << it->first << "\": ";
it->second->print(os, indent + " ");
if (std::next(it) != keyvalue.rend()) {
os << ",\n";
}
}
}
else {
for (auto it = keyvalue.begin(); it != keyvalue.end(); ++it) {
os << indent << " \"" << it->first << "\": ";
it->second->print(os, indent + " ");
if (std::next(it) != keyvalue.end()) {
os << ",\n";
}
}
}
os << '\n' << indent << "}";
return os;
}
jsonhead::json_tree::json_tree(jvalue entry) {
if (entry->is_array() || entry->is_object()) {
_tree_entry = to_jtree_node(entry);
}
else
throw std::runtime_error("entry must be array or object type!");
}
jsonhead::jtree_value jsonhead::json_tree::to_jtree_node(jvalue value) {
if (value->is_array()) {
return to_jtree_array(std::static_pointer_cast<json_array>(value));
}
else if (value->is_object()) {
return to_jtree_object(std::static_pointer_cast<json_object>(value));
}
else if (value->is_string()) {
return jtree_value(new json_tree_node(json_tree_type::string));
}
else if (value->is_numeric()) {
return jtree_value(new json_tree_node(json_tree_type::numeric));
}
else if (value->is_keyword()) {
auto type = ((json_state*)&*value);
if (type->type == json_token::v_true || type->type == json_token::v_false)
return jtree_value(new json_tree_node(json_tree_type::boolean));
else if (type->type == json_token::v_null)
return jtree_value(new json_tree_node(json_tree_type::none));
}
throw std::runtime_error("internal error!");
}
jsonhead::jtree_value jsonhead::json_tree::to_jtree_array(jarray array) {
json_tree_array *arr = new json_tree_array();
for (auto it = array->array.begin(); it != array->array.end(); it++) {
arr->array.push_back(to_jtree_node(*it));
}
#ifdef CONFIG_COMPRESS
if (arr->check_consistency()) {
auto sa = arr->to_safe_array();
delete arr;
return sa;
}
#endif
return jtree_value(arr);
}
jsonhead::jtree_object jsonhead::json_tree::to_jtree_object(jobject object) {
json_tree_object* obj = new json_tree_object();
for (auto it = object->keyvalue.begin(); it != object->keyvalue.end(); it++)
obj->keyvalue.push_back({it->first, to_jtree_node(it->second)});
return jtree_object(obj);
}