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json.cpp
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/*
Copyright (c) 2012-2024 James Baker
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, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
The official repository for this library is at https://github.com/VA7ODR/json
*/
#include <algorithm>
#include <cassert>
#include <cmath>
#include <iomanip>
#include <optional>
#include <utility>
#include <string>
#include <strstream>
#include <sstream>
#if defined _WINDOWS && defined __clang__
# define __uncaught_exception std::uncaught_exception
#endif
#include "json.hpp"
#include <cmath>
#if defined JSON_USE_ADDED_ORDER
# if defined JSON_NAMESPACE
# undef JSON_NAMESPACE
# endif
# define JSON_NAMESPACE ojson
#endif
#if defined __GNUC__
# define UNSIGNEDMAX 0xFFFFFFFFFFFFFFFFLL
# define SIGNEDMAX 0x7FFFFFFFFFFFFFFFLL
#else
# define UNSIGNEDMAX 0xFFFFFFFFFFFFFFFF
# define SIGNEDMAX 0x7FFFFFFFFFFFFFFF
#endif
#if defined _WINDOWS
# define _CRT_SECURE_NO_DEPRICATE 1
# define _CRT_SECURE_NO_WARNINGS 1
#endif
namespace JSON_NAMESPACE
{
class MovingCharPointer
{
public:
MovingCharPointer(sdstring & in, size_t reserve);
MovingCharPointer(MovingCharPointer && ptr) noexcept;
~MovingCharPointer() = default;
MovingCharPointer & operator=(MovingCharPointer && ptr) noexcept;
void set(const sdstring & str);
void set(const char * n, size_t size);
void set(char n);
char * orig();
char * move();
private:
sdstring & loc;
char * m_orig {nullptr};
char * m_current {nullptr};
char * m_max {nullptr};
};
const double e[] = { // 1e-308...1e308: 617 * 8 bytes = 4936 bytes
1e-308, 1e-307, 1e-306, 1e-305, 1e-304, 1e-303, 1e-302, 1e-301, 1e-300, 1e-299, 1e-298, 1e-297, 1e-296, 1e-295, 1e-294, 1e-293, 1e-292, 1e-291, 1e-290, 1e-289, 1e-288, 1e-287, 1e-286, 1e-285,
1e-284, 1e-283, 1e-282, 1e-281, 1e-280, 1e-279, 1e-278, 1e-277, 1e-276, 1e-275, 1e-274, 1e-273, 1e-272, 1e-271, 1e-270, 1e-269, 1e-268, 1e-267, 1e-266, 1e-265, 1e-264, 1e-263, 1e-262, 1e-261,
1e-260, 1e-259, 1e-258, 1e-257, 1e-256, 1e-255, 1e-254, 1e-253, 1e-252, 1e-251, 1e-250, 1e-249, 1e-248, 1e-247, 1e-246, 1e-245, 1e-244, 1e-243, 1e-242, 1e-241, 1e-240, 1e-239, 1e-238, 1e-237,
1e-236, 1e-235, 1e-234, 1e-233, 1e-232, 1e-231, 1e-230, 1e-229, 1e-228, 1e-227, 1e-226, 1e-225, 1e-224, 1e-223, 1e-222, 1e-221, 1e-220, 1e-219, 1e-218, 1e-217, 1e-216, 1e-215, 1e-214, 1e-213,
1e-212, 1e-211, 1e-210, 1e-209, 1e-208, 1e-207, 1e-206, 1e-205, 1e-204, 1e-203, 1e-202, 1e-201, 1e-200, 1e-199, 1e-198, 1e-197, 1e-196, 1e-195, 1e-194, 1e-193, 1e-192, 1e-191, 1e-190, 1e-189,
1e-188, 1e-187, 1e-186, 1e-185, 1e-184, 1e-183, 1e-182, 1e-181, 1e-180, 1e-179, 1e-178, 1e-177, 1e-176, 1e-175, 1e-174, 1e-173, 1e-172, 1e-171, 1e-170, 1e-169, 1e-168, 1e-167, 1e-166, 1e-165,
1e-164, 1e-163, 1e-162, 1e-161, 1e-160, 1e-159, 1e-158, 1e-157, 1e-156, 1e-155, 1e-154, 1e-153, 1e-152, 1e-151, 1e-150, 1e-149, 1e-148, 1e-147, 1e-146, 1e-145, 1e-144, 1e-143, 1e-142, 1e-141,
1e-140, 1e-139, 1e-138, 1e-137, 1e-136, 1e-135, 1e-134, 1e-133, 1e-132, 1e-131, 1e-130, 1e-129, 1e-128, 1e-127, 1e-126, 1e-125, 1e-124, 1e-123, 1e-122, 1e-121, 1e-120, 1e-119, 1e-118, 1e-117,
1e-116, 1e-115, 1e-114, 1e-113, 1e-112, 1e-111, 1e-110, 1e-109, 1e-108, 1e-107, 1e-106, 1e-105, 1e-104, 1e-103, 1e-102, 1e-101, 1e-100, 1e-99, 1e-98, 1e-97, 1e-96, 1e-95, 1e-94, 1e-93,
1e-92, 1e-91, 1e-90, 1e-89, 1e-88, 1e-87, 1e-86, 1e-85, 1e-84, 1e-83, 1e-82, 1e-81, 1e-80, 1e-79, 1e-78, 1e-77, 1e-76, 1e-75, 1e-74, 1e-73, 1e-72, 1e-71, 1e-70, 1e-69,
1e-68, 1e-67, 1e-66, 1e-65, 1e-64, 1e-63, 1e-62, 1e-61, 1e-60, 1e-59, 1e-58, 1e-57, 1e-56, 1e-55, 1e-54, 1e-53, 1e-52, 1e-51, 1e-50, 1e-49, 1e-48, 1e-47, 1e-46, 1e-45,
1e-44, 1e-43, 1e-42, 1e-41, 1e-40, 1e-39, 1e-38, 1e-37, 1e-36, 1e-35, 1e-34, 1e-33, 1e-32, 1e-31, 1e-30, 1e-29, 1e-28, 1e-27, 1e-26, 1e-25, 1e-24, 1e-23, 1e-22, 1e-21,
1e-20, 1e-19, 1e-18, 1e-17, 1e-16, 1e-15, 1e-14, 1e-13, 1e-12, 1e-11, 1e-10, 1e-9, 1e-8, 1e-7, 1e-6, 1e-5, 1e-4, 1e-3, 1e-2, 1e-1, 1e+0, 1e+1, 1e+2, 1e+3,
1e+4, 1e+5, 1e+6, 1e+7, 1e+8, 1e+9, 1e+10, 1e+11, 1e+12, 1e+13, 1e+14, 1e+15, 1e+16, 1e+17, 1e+18, 1e+19, 1e+20, 1e+21, 1e+22, 1e+23, 1e+24, 1e+25, 1e+26, 1e+27,
1e+28, 1e+29, 1e+30, 1e+31, 1e+32, 1e+33, 1e+34, 1e+35, 1e+36, 1e+37, 1e+38, 1e+39, 1e+40, 1e+41, 1e+42, 1e+43, 1e+44, 1e+45, 1e+46, 1e+47, 1e+48, 1e+49, 1e+50, 1e+51,
1e+52, 1e+53, 1e+54, 1e+55, 1e+56, 1e+57, 1e+58, 1e+59, 1e+60, 1e+61, 1e+62, 1e+63, 1e+64, 1e+65, 1e+66, 1e+67, 1e+68, 1e+69, 1e+70, 1e+71, 1e+72, 1e+73, 1e+74, 1e+75,
1e+76, 1e+77, 1e+78, 1e+79, 1e+80, 1e+81, 1e+82, 1e+83, 1e+84, 1e+85, 1e+86, 1e+87, 1e+88, 1e+89, 1e+90, 1e+91, 1e+92, 1e+93, 1e+94, 1e+95, 1e+96, 1e+97, 1e+98, 1e+99,
1e+100, 1e+101, 1e+102, 1e+103, 1e+104, 1e+105, 1e+106, 1e+107, 1e+108, 1e+109, 1e+110, 1e+111, 1e+112, 1e+113, 1e+114, 1e+115, 1e+116, 1e+117, 1e+118, 1e+119, 1e+120, 1e+121, 1e+122, 1e+123,
1e+124, 1e+125, 1e+126, 1e+127, 1e+128, 1e+129, 1e+130, 1e+131, 1e+132, 1e+133, 1e+134, 1e+135, 1e+136, 1e+137, 1e+138, 1e+139, 1e+140, 1e+141, 1e+142, 1e+143, 1e+144, 1e+145, 1e+146, 1e+147,
1e+148, 1e+149, 1e+150, 1e+151, 1e+152, 1e+153, 1e+154, 1e+155, 1e+156, 1e+157, 1e+158, 1e+159, 1e+160, 1e+161, 1e+162, 1e+163, 1e+164, 1e+165, 1e+166, 1e+167, 1e+168, 1e+169, 1e+170, 1e+171,
1e+172, 1e+173, 1e+174, 1e+175, 1e+176, 1e+177, 1e+178, 1e+179, 1e+180, 1e+181, 1e+182, 1e+183, 1e+184, 1e+185, 1e+186, 1e+187, 1e+188, 1e+189, 1e+190, 1e+191, 1e+192, 1e+193, 1e+194, 1e+195,
1e+196, 1e+197, 1e+198, 1e+199, 1e+200, 1e+201, 1e+202, 1e+203, 1e+204, 1e+205, 1e+206, 1e+207, 1e+208, 1e+209, 1e+210, 1e+211, 1e+212, 1e+213, 1e+214, 1e+215, 1e+216, 1e+217, 1e+218, 1e+219,
1e+220, 1e+221, 1e+222, 1e+223, 1e+224, 1e+225, 1e+226, 1e+227, 1e+228, 1e+229, 1e+230, 1e+231, 1e+232, 1e+233, 1e+234, 1e+235, 1e+236, 1e+237, 1e+238, 1e+239, 1e+240, 1e+241, 1e+242, 1e+243,
1e+244, 1e+245, 1e+246, 1e+247, 1e+248, 1e+249, 1e+250, 1e+251, 1e+252, 1e+253, 1e+254, 1e+255, 1e+256, 1e+257, 1e+258, 1e+259, 1e+260, 1e+261, 1e+262, 1e+263, 1e+264, 1e+265, 1e+266, 1e+267,
1e+268, 1e+269, 1e+270, 1e+271, 1e+272, 1e+273, 1e+274, 1e+275, 1e+276, 1e+277, 1e+278, 1e+279, 1e+280, 1e+281, 1e+282, 1e+283, 1e+284, 1e+285, 1e+286, 1e+287, 1e+288, 1e+289, 1e+290, 1e+291,
1e+292, 1e+293, 1e+294, 1e+295, 1e+296, 1e+297, 1e+298, 1e+299, 1e+300, 1e+301, 1e+302, 1e+303, 1e+304, 1e+305, 1e+306, 1e+307, 1e+308};
template <typename CharType = char>
struct UTF8
{
typedef CharType Ch;
static Ch * Encode(Ch * buffer, unsigned codepoint)
{
if (codepoint <= 0xFF) {
*buffer++ = codepoint & 0xFF;
} else if (codepoint <= 0x7FF) {
*buffer++ = 0xC0 | ((codepoint >> 6) & 0xFF);
*buffer++ = 0x80 | ((codepoint & 0x3F));
} else if (codepoint <= 0xFFFF) {
*buffer++ = 0xE0 | ((codepoint >> 12) & 0xFF);
*buffer++ = 0x80 | ((codepoint >> 6) & 0x3F);
*buffer++ = 0x80 | (codepoint & 0x3F);
} else {
if (!(codepoint <= 0x10FFFF)) {
return buffer;
}
*buffer++ = 0xF0 | ((codepoint >> 18) & 0xFF);
*buffer++ = 0x80 | ((codepoint >> 12) & 0x3F);
*buffer++ = 0x80 | ((codepoint >> 6) & 0x3F);
*buffer++ = 0x80 | (codepoint & 0x3F);
}
return buffer;
}
};
double Pow10(int n)
{
if (!(n <= 308)) {
return 0.0;
}
return n < -308 ? 0.0 : e[n + 308];
}
void generateError(instring & inputString, const sdstring & szError)
{
sdstring in = inputString.SoFar();
size_t l = in.size();
size_t pos = 1;
size_t line = 1;
for (size_t i = 0; i < l; i++) {
if (in[i] == '\n') {
line++;
pos = 1;
} else {
if (in[i] != '\r') {
pos++;
}
}
}
inputString.Error().clear();
inputString.Error().reserve(szError.size() + 64);
sdostream s(inputString.Error());
s << szError << " Line: " << line << " Column: " << pos;
}
void nullParse(value & ret, instring & inputString, bool * bFailed)
{
if (inputString.take() != 'n' || inputString.take() != 'u' || inputString.take() != 'l' || inputString.take() != 'l') {
generateError(inputString, "Error Parsing null.");
*bFailed = true;
}
if (ret.myType == JSON_OBJECT) {
delete ret.obj;
} else if (ret.myType == JSON_ARRAY) {
delete ret.arr;
}
ret.myType = JSON_NULL;
ret.str.clear();
ret.m_number = 0.0;
ret.m_places = -1;
ret.obj = nullptr;
ret.arr = nullptr;
ret.m_boolean = false;
}
void trueParse(value & ret, instring & inputString, bool * bFailed)
{
if (inputString.take() != 't' || inputString.take() != 'r' || inputString.take() != 'u' || inputString.take() != 'e') {
generateError(inputString, "Error Parsing true.");
*bFailed = true;
}
ret = true;
}
void falseParse(value & ret, instring & inputString, bool * bFailed)
{
if (inputString.take() != 'f' || inputString.take() != 'a' || inputString.take() != 'l' || inputString.take() != 's' || inputString.take() != 'e') {
generateError(inputString, "Error Parsing false.");
*bFailed = true;
}
ret = false;
}
void SkipWhitespace(instring & in)
{
while (in.peek() == ' ' || in.peek() == '\n' || in.peek() == '\r' || in.peek() == '\t') {
in.skip();
}
}
unsigned hex4Parse(instring & s, sdstring::iterator & take, bool * bFailed)
{
unsigned ret = 0;
for (int i = 0; i < 4; i++) {
const char & c = *take++;
ret <<= 4;
ret += (unsigned)c;
if (c >= '0' && c <= '9') {
ret -= '0';
} else if (c >= 'A' && c <= 'F') {
ret -= 'A' - 10;
} else if (c >= 'a' && c <= 'f') {
ret -= 'a' - 10;
} else {
generateError(s, "Error Parsing hex.");
*bFailed = true;
return 0;
}
}
return ret;
}
void stringParse(sdstring & ret, instring & s, bool * bFailed)
{
#define Z16 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
static const char m_escape[256] = {Z16, Z16, 0, 0, '\"', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, '/', Z16, Z16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, '\\', 0, 0, 0, 0, 0,
'\b', 0, 0, 0, '\f', 0, 0, 0, 0, 0, 0, 0, '\n', 0, 0, 0, '\r', 0, '\t', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Z16, Z16, Z16, Z16, Z16, Z16, Z16, Z16};
#undef Z16
s.take(); // Skip '\"'
s.UpToAndIncluding(ret, '"');
if (ret.back() != '"') {
generateError(s, "lacks ending quotation before the end of string");
}
auto ptr = ret.begin();
auto take = ptr;
for (;;) {
const char & c = *take++;
switch (c) {
case '\0':
generateError(s, "Unexpected EOF.");
*bFailed = true;
return;
default:
{
*ptr = c;
++ptr;
// *ptr++ = c;
break;
}
case '"':
{
ret.resize(ptr - ret.begin());
return;
}
case '\\':
{
const char & cE = *take++;
char e = m_escape[(unsigned char)cE];
if (e) {
*ptr++ = e;
} else if (cE == 'u') { // Unicode
unsigned h = hex4Parse(s, take, bFailed);
if (*bFailed) {
return;
}
if (h >= 0xD800 && h <= 0xDBFF) { // Handle UTF-16 surrogate pair
if (*take++ != '\\' || *take++ != 'u') {
generateError(s, "Error Parsing string.");
*bFailed = true;
return;
}
unsigned h2 = hex4Parse(s, take, bFailed);
if (*bFailed) {
return;
}
if (h2 < 0xDC00 || h2 > 0xDFFF) {
generateError(s, "Error Parsing string.");
*bFailed = true;
return;
}
h = (((h - 0xD800) << 10) | (h2 - 0xDC00)) + 0x10000;
}
char buffer[4];
auto count = size_t(UTF8<>::Encode(buffer, h) - &buffer[0]);
for (size_t i = 0; i < count; i++) {
*ptr++ = buffer[i];
}
} else {
generateError(s, "Unknown escape character.");
*bFailed = true;
return;
}
break;
}
}
}
}
void numberParse(value & ret, instring & s, bool * bFailed)
{
const char * pStart = s.getPos();
bool minus = false;
if (s.peek() == '-') {
minus = true;
s.take();
}
double d = 0;
if (s.peek() >= '0' && s.peek() <= '9') {
d = s.take() - '0';
while (s.peek() >= '0' && s.peek() <= '9') {
if (d >= 1E307) {
generateError(s, "Number too big to store in double");
*bFailed = true;
ret = value();
return;
}
d = d * 10 + (s.take() - '0');
}
} else if (s.peek() != '.') {
generateError(s, "Expect a value here.");
*bFailed = true;
ret = value();
return;
}
int expFrac = 0;
if (s.peek() == '.') {
s.take();
if (s.peek() >= '0' && s.peek() <= '9') {
d = d * 10 + (s.take() - '0');
--expFrac;
} else {
generateError(s, "At least one digit in fraction part");
*bFailed = true;
ret = value();
return;
}
while (s.peek() >= '0' && s.peek() <= '9') {
if (expFrac > -16) {
d = d * 10 + (s.peek() - '0');
--expFrac;
}
s.take();
}
}
int exp = 0;
if (s.peek() == 'e' || s.peek() == 'E') {
s.take();
bool expMinus = false;
if (s.peek() == '+') {
s.take();
} else if (s.peek() == '-') {
s.take();
expMinus = true;
}
if (s.peek() >= '0' && s.peek() <= '9') {
exp = s.take() - '0';
while (s.peek() >= '0' && s.peek() <= '9') {
exp = exp * 10 + (s.take() - '0');
if (exp > 308) {
generateError(s, "Number too big to store in double");
*bFailed = true;
ret = value();
return;
}
}
} else {
generateError(s, "At least one digit in exponent");
*bFailed = true;
ret = value();
return;
}
if (expMinus) {
exp = -exp;
}
}
d *= Pow10(exp + expFrac);
ret = minus ? -d : d;
ret.str.assign(pStart, (size_t)(s.getPos() - pStart));
size_t pos = 0;
for (char c : ret.str) {
if (c != '0') {
if (pos > 0) {
ret.str = ret.str.substr(pos);
}
if (ret.str[0] == '.') {
ret.str.insert(0, 1, '0');
}
break;
}
pos++;
}
return;
}
void objectParse(value & ret, instring & inputString, bool * bFailed)
{
if (inputString.peek() != '{') {
generateError(inputString, "Invalid character for start of object.");
*bFailed = true;
return;
}
inputString.take();
ret.myType = JSON_OBJECT;
SkipWhitespace(inputString);
ret.obj = new object();
ret.obj->setNotEmpty();
if (ret.pParentArray) {
ret.obj->setParentArray(ret.pParentArray);
} else if (ret.pParentObject) {
ret.obj->setParentObject(ret.pParentObject);
}
if (inputString.peek() == '}') {
inputString.take();
return;
}
for (;;) {
if (inputString.peek() != '"') {
generateError(inputString, "Name of an object member must be a string");
*bFailed = true;
ret = value();
return;
}
sdstring key;
stringParse(key, inputString, bFailed);
if (*bFailed) {
ret = value();
return;
}
SkipWhitespace(inputString);
if (inputString.take() != ':') {
generateError(inputString, "There must be a colon after the name of object member");
*bFailed = true;
ret = value();
return;
}
SkipWhitespace(inputString);
value & temp = (*ret.obj)[key];
temp.setParentObject(ret.obj);
temp.m_key.assign(key);
valueParse(temp, inputString, bFailed);
if (*bFailed) {
ret = value();
return;
}
SkipWhitespace(inputString);
switch (inputString.take()) {
case ',':
SkipWhitespace(inputString);
break;
case '}':
return;
default:
generateError(inputString, "Must be a comma or '}' after an object member");
*bFailed = true;
ret = value();
return;
}
}
}
void arrayParse(value & arr, instring & inputString, bool * bFailed)
{
if (inputString.peek() != '[') {
generateError(inputString, "Invalid character for start of object.");
*bFailed = true;
arr = value();
return;
}
inputString.take();
arr.myType = JSON_ARRAY;
SkipWhitespace(inputString);
arr.arr = new array();
if (arr.pParentArray) {
arr.arr->setParentArray(arr.pParentArray);
} else if (arr.pParentObject) {
arr.arr->setParentObject(arr.pParentObject);
}
arr.arr->setNotEmpty();
if (inputString.peek() == ']') {
inputString.take();
return;
}
for (;;) {
size_t l = arr.arr->size();
arr.arr->resize(l + 1);
value & temp = arr.arr->at(l);
temp.setParentArray(arr.arr);
valueParse(temp, inputString, bFailed);
if (*bFailed) {
arr = value();
return;
}
SkipWhitespace(inputString);
char c = inputString.take();
switch (c) {
case ',':
SkipWhitespace(inputString);
break;
case ']':
return;
default:
generateError(inputString, "Must be a comma or ']' after an array element.");
*bFailed = true;
arr = value();
return;
}
}
}
void valueParse(value & a, instring & inputString, bool * bFailed)
{
switch (inputString.peek()) {
default:
break;
case 'n':
nullParse(a, inputString, bFailed);
return;
case 't':
trueParse(a, inputString, bFailed);
return;
case 'f':
falseParse(a, inputString, bFailed);
return;
case '"':
{
if (a.myType == JSON_OBJECT) {
delete a.obj;
}
if (a.myType == JSON_ARRAY) {
delete a.arr;
}
a.myType = JSON_STRING;
a.m_boolean = false;
a.m_number = 0.0;
a.m_places = -1;
if (!a.str.empty()) {
a.str.clear();
}
stringParse(a.str, inputString, bFailed);
return;
}
case '{':
objectParse(a, inputString, bFailed);
return;
case '[':
arrayParse(a, inputString, bFailed);
return;
}
numberParse(a, inputString, bFailed);
}
inline bool isValidUTF8Character(const unsigned char & c)
{
// Check if the byte is a valid start of a UTF-8 character
return (c & 0xC0) != 0x80;
}
size_t esize(const sdstring & ins)
{
size_t ret = 0;
static const char m_escape[256] = {
// 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F
6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 6, 2, 2, 6, 6, // 00
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, // 10
1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 20
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 30
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 40
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, // 50
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 60
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 6, // 70
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, // 80
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, // 90
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, // A0
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, // B0
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, // C0
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, // D0
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, // E0
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, // F0
};
auto end = ins.end();
for (auto it = ins.begin(); it != end; ++it) {
const char & c = *it;
ret += (size_t)m_escape[(const unsigned char)(c)];
}
return ret;
}
void escape(MovingCharPointer & ptr, const sdstring & ins)
{
static const char hexDigits[] = "0123456789ABCDEF";
static const char m_escape[256] = {
// 0 1 2 3 4 5 6 7 8 9 A B C D E F
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'b', 't', 'n', 'u', 'f', 'r', 'u', 'u', // 00
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // 10
0, 0, '"', 0, 0, 0, 0, 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, // 30
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 40 // 30~4F
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, '\\', 0, 0, 0, // 50
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 60
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'u', // 70
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // 80
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // 90
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // A0
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // B0
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // C0
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // D0
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // E0
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // F0
};
size_t l = ins.size();
const auto * p = (const unsigned char *)ins.c_str();
for (size_t i = 0; i < l; ++i, ++p) {
const unsigned char & c = *p;
char e = m_escape[c];
switch (e) {
case 0:
ptr.set(c);
break;
default:
ptr.set('\\');
ptr.set(e);
break;
case 'u':
ptr.set("\\u00", 4);
ptr.set(hexDigits[c >> 4]);
ptr.set(hexDigits[c & 0xF]);
break;
}
}
}
void escape(std::ostream & S, const sdstring & ins)
{
static const char hexDigits[] = "0123456789ABCDEF";
static const char m_escape[256] = {
// 0 1 2 3 4 5 6 7 8 9 A B C D E F
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'b', 't', 'n', 'u', 'f', 'r', 'u', 'u', // 00
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // 10
0, 0, '"', 0, 0, 0, 0, 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, // 30
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 40 // 30~4F
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, '\\', 0, 0, 0, // 50
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 60
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'u', // 70
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // 80
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // 90
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // A0
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // B0
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // C0
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // D0
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // E0
'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // F0
};
size_t l = ins.size();
const auto * p = (const unsigned char *)ins.c_str();
for (size_t i = 0; i < l; ++i, ++p) {
const unsigned char & c = *p;
char e = m_escape[c];
switch (e) {
case 0:
S.put(c);
break;
default:
S.put('\\');
S.put(e);
break;
case 'u':
S.write("\\u00", 4);
S.put(hexDigits[c >> 4]);
S.put(hexDigits[c & 0xF]);
break;
}
}
}
MovingCharPointer::MovingCharPointer(sdstring & in, size_t reserve) : loc(in)
{
loc.resize(reserve);
m_orig = loc.data();
m_current = m_orig;
m_max = m_orig + reserve;
}
MovingCharPointer::MovingCharPointer(MovingCharPointer && ptr) noexcept : loc(ptr.loc)
{
std::swap(m_orig, ptr.m_orig);
std::swap(m_current, ptr.m_current);
std::swap(m_max, ptr.m_max);
}
MovingCharPointer & MovingCharPointer::operator=(MovingCharPointer && ptr) noexcept
{
loc = ptr.loc;
std::swap(m_orig, ptr.m_orig);
std::swap(m_current, ptr.m_current);
std::swap(m_max, ptr.m_max);
return *this;
}
inline void MovingCharPointer::set(const sdstring & str)
{
size_t l = str.size();
memcpy(m_current, str.c_str(), l);
m_current += l;
}
inline void MovingCharPointer::set(const char * n, size_t size)
{
memcpy(m_current, n, size);
m_current += size;
}
inline void MovingCharPointer::set(char n)
{
*m_current++ = n;
}
char * MovingCharPointer::orig()
{
*m_current = 0;
return m_orig;
}
char * MovingCharPointer::move()
{
*m_current = 0;
char * temp = m_orig;
m_orig = nullptr;
m_current = nullptr;
m_max = nullptr;
return temp;
}
iterator value::begin() const
{
switch (myType) {
case JSON_ARRAY:
return iterator(arr->begin());
case JSON_OBJECT:
return iterator(obj->begin());
default:
return iterator();
}
}
iterator value::end() const
{
switch (myType) {
case JSON_ARRAY:
return iterator(arr->end());
case JSON_OBJECT:
return iterator(obj->end());
default:
return iterator();
}
}
reverse_iterator value::rbegin() const
{
switch (myType) {
case JSON_ARRAY:
return reverse_iterator(arr->rbegin());
case JSON_OBJECT:
return reverse_iterator(obj->rbegin());
default:
return reverse_iterator();
}
}
reverse_iterator value::rend() const
{
switch (myType) {
case JSON_ARRAY:
return reverse_iterator(arr->rend());
case JSON_OBJECT:
return reverse_iterator(obj->rend());
default:
return reverse_iterator();
}
}
iterator value::find(size_t index) const
{
assert(int64_t(index) >= 0);
if (index > size_t(-1) / size_t(2) - 1) {
if (debug()) {
debug()("json find: index %lu out of bounds", index);
}
return iterator();
}
if (myType == JSON_ARRAY) {
if (index < arr->size()) {
return arr->begin() + (long)index;
}
}
return iterator();
}
iterator value::find(const sdstring & index) const
{
if (myType == JSON_OBJECT) {
return obj->find(index);
}
return iterator();
}
iterator value::find(const char * index) const
{
if (myType == JSON_OBJECT) {
return obj->find(index);
}
return iterator();
}
reverse_iterator value::rfind(size_t index) const
{
assert(int64_t(index) >= 0);
if (index > size_t(-1) / size_t(2) - 1) {
if (debug()) {
debug()("json rfind: index %lu out of bounds", index);
}
return reverse_iterator();
}
return reverse_iterator(find(index));
}
reverse_iterator value::rfind(const sdstring & index) const
{
iterator it = find(index);
if (it == end()) {
return reverse_iterator();
}
return reverse_iterator(++it);
}
reverse_iterator value::rfind(const char * index) const
{
iterator it = find(index);
if (it == end()) {
return reverse_iterator();
}
return reverse_iterator(++it);
}
bool value::boolean() const
{
switch (myType) {
case JSON_VOID:
case JSON_NULL:
default:
return false;
case JSON_BOOLEAN:
return m_boolean;
case JSON_NUMBER:
return m_number != 0.0;
case JSON_STRING:
return str.size() > 0;
case JSON_ARRAY:
return !arr->empty();
case JSON_OBJECT:
return !obj->empty();
}
}
sdstring & value::makeStringFromNumber(sdstring & in, int iPlaces, double temp)
{
if (iPlaces >= 0) {
temp = round((temp * pow(10, iPlaces))) / pow(10, iPlaces);
}
in.clear();
in.reserve(JSON_NUMBER_PRECISION * 2);
sdostream s(in);
s << std::setprecision(JSON_NUMBER_PRECISION) << temp;
if (iPlaces >= 0) {
size_t p = in.find('.');
if (p != sdstring::npos) {
size_t places = in.size() - p - 1;
if (places < (size_t)iPlaces) {
in.append((size_t)iPlaces - places, '0');
}
} else {
if (iPlaces > 0) {
in.append(".");
in.append((size_t)iPlaces, '0');
}
}
}
return in;
}
size_t value::psize(size_t depth, bool bPretty)
{
switch (isA()) {
default:
case JSON_VOID:
return 0;
case JSON_NULL:
return 4;
case JSON_BOOLEAN:
if (m_boolean) {
return 4;
} else {
return 5;
}
case JSON_NUMBER:
{
if (str.empty()) {
makeStringFromNumber(str, m_places, m_number);
}
return str.size();
}
case JSON_STRING:
return esize(str) + 2;
case JSON_ARRAY:
arr->resize(size());
return arr->psize(depth + 1, bPretty);
case JSON_OBJECT:
return obj->psize(depth + 1, bPretty);
}
}
void value::cprint(MovingCharPointer & ptr, size_t depth, bool bPretty)
{
switch (isA()) {
default:
case JSON_VOID:
break;
case JSON_NULL: