146 lines
2.9 KiB
C++
146 lines
2.9 KiB
C++
// Copyright (c) 2012-2013 The Cryptonote developers
|
|
// Distributed under the MIT/X11 software license, see the accompanying
|
|
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
|
|
|
/* json_archive.h
|
|
*
|
|
* JSON archive */
|
|
|
|
#pragma once
|
|
|
|
#include "serialization.h"
|
|
#include <cassert>
|
|
#include <iostream>
|
|
#include <iomanip>
|
|
|
|
template <class Stream, bool IsSaving>
|
|
struct json_archive_base
|
|
{
|
|
typedef Stream stream_type;
|
|
typedef json_archive_base<Stream, IsSaving> base_type;
|
|
typedef boost::mpl::bool_<IsSaving> is_saving;
|
|
|
|
typedef const char *variant_tag_type;
|
|
|
|
json_archive_base(stream_type &s, bool indent = false) : stream_(s), indent_(indent), object_begin(false), depth_(0) { }
|
|
|
|
void tag(const char *tag) {
|
|
if (!object_begin)
|
|
stream_ << ", ";
|
|
make_indent();
|
|
stream_ << '"' << tag << "\": ";
|
|
object_begin = false;
|
|
}
|
|
|
|
void begin_object()
|
|
{
|
|
stream_ << "{";
|
|
++depth_;
|
|
object_begin = true;
|
|
}
|
|
|
|
void end_object()
|
|
{
|
|
--depth_;
|
|
make_indent();
|
|
stream_ << "}";
|
|
}
|
|
|
|
void begin_variant() { begin_object(); }
|
|
void end_variant() { end_object(); }
|
|
Stream &stream() { return stream_; }
|
|
|
|
protected:
|
|
void make_indent()
|
|
{
|
|
if (indent_)
|
|
{
|
|
stream_ << '\n' << std::string(2 * depth_, ' ');
|
|
}
|
|
}
|
|
|
|
protected:
|
|
stream_type &stream_;
|
|
bool indent_;
|
|
bool object_begin;
|
|
size_t depth_;
|
|
};
|
|
|
|
template <bool W>
|
|
struct json_archive;
|
|
|
|
template <>
|
|
struct json_archive<true> : public json_archive_base<std::ostream, true>
|
|
{
|
|
json_archive(stream_type &s, bool indent = false) : base_type(s, indent) { }
|
|
|
|
template<typename T>
|
|
static auto promote_to_printable_integer_type(T v) -> decltype(+v)
|
|
{
|
|
// Unary operator '+' performs integral promotion on type T [expr.unary.op].
|
|
// If T is signed or unsigned char, it's promoted to int and printed as number.
|
|
return +v;
|
|
}
|
|
|
|
template <class T>
|
|
void serialize_int(T v)
|
|
{
|
|
stream_ << std::dec << promote_to_printable_integer_type(v);
|
|
}
|
|
|
|
void serialize_blob(void *buf, size_t len, const char *delimiter="\"") {
|
|
begin_string(delimiter);
|
|
for (size_t i = 0; i < len; i++) {
|
|
unsigned char c = ((unsigned char *)buf)[i];
|
|
stream_ << std::hex << std::setw(2) << std::setfill('0') << (int)c;
|
|
}
|
|
end_string(delimiter);
|
|
}
|
|
|
|
template <class T>
|
|
void serialize_varint(T &v)
|
|
{
|
|
stream_ << std::dec << promote_to_printable_integer_type(v);
|
|
}
|
|
|
|
void begin_string(const char *delimiter="\"")
|
|
{
|
|
stream_ << delimiter;
|
|
}
|
|
|
|
void end_string(const char *delimiter="\"")
|
|
{
|
|
stream_ << delimiter;
|
|
}
|
|
|
|
void begin_array(size_t s=0)
|
|
{
|
|
inner_array_size_ = s;
|
|
++depth_;
|
|
stream_ << "[ ";
|
|
}
|
|
|
|
void delimit_array()
|
|
{
|
|
stream_ << ", ";
|
|
}
|
|
|
|
void end_array()
|
|
{
|
|
--depth_;
|
|
if (0 < inner_array_size_)
|
|
{
|
|
make_indent();
|
|
}
|
|
stream_ << "]";
|
|
}
|
|
|
|
void write_variant_tag(const char *t)
|
|
{
|
|
tag(t);
|
|
}
|
|
|
|
private:
|
|
size_t inner_array_size_;
|
|
};
|