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// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
// Copyright 2011, SIL International, All rights reserved.
// JSON pretty printer for graphite font debug output logging.
// Created on: 15 Dec 2011
// Author: Tim Eves
#pragma once
#include "inc/Main.h"
#include <cassert>
#include <cstdio>
#include <cstdint>
#include "inc/List.h"
namespace graphite2 {
class json
{
// Prevent copying
json(const json &);
json & operator = (const json &);
typedef void (*_context_t)(json &);
FILE * const _stream;
char _contexts[128], // context stack
* _context, // current context (top of stack)
* _flatten; // if !0 points to context above which
// pretty printed output should occur.
Vector<void *> _env;
void context(const char current) throw();
void indent(const int d=0) throw();
void push_context(const char, const char) throw();
void pop_context() throw();
public:
class closer;
using string = const char *;
using number = double;
enum class integer : std::intmax_t {};
enum class integer_u : std::uintmax_t {};
using boolean = bool;
static const std::nullptr_t null;
void setenv(unsigned int index, void *val) { _env.reserve(index + 1); if (index >= _env.size()) _env.insert(_env.end(), _env.size() - index + 1, 0); _env[index] = val; }
void *getenv(unsigned int index) const { return _env[index]; }
const Vector<void *> &getenvs() const { return _env; }
static void flat(json &) throw();
static void close(json &) throw();
static void object(json &) throw();
static void array(json &) throw();
static void item(json &) throw();
json(FILE * stream) throw();
~json() throw ();
FILE * stream() const throw();
json & operator << (string) throw();
json & operator << (number) throw();
json & operator << (integer) throw();
json & operator << (integer_u) throw();
json & operator << (boolean) throw();
json & operator << (std::nullptr_t) throw();
json & operator << (_context_t) throw();
operator bool() const throw();
bool good() const throw();
bool eof() const throw();
CLASS_NEW_DELETE;
};
class json::closer
{
// Prevent copying.
closer(const closer &);
closer & operator = (const closer &);
json * const _j;
public:
closer(json * const j) : _j(j) {}
~closer() throw() { if (_j) *_j << close; }
};
inline
json::json(FILE * s) throw()
: _stream(s), _context(_contexts), _flatten(0)
{
if (good())
fflush(s);
}
inline
json::~json() throw ()
{
while (_context > _contexts) pop_context();
}
inline
FILE * json::stream() const throw() { return _stream; }
inline
json & json::operator << (json::_context_t ctxt) throw()
{
ctxt(*this);
return *this;
}
inline
json & operator << (json & j, signed char d) throw() { return j << json::integer(d); }
inline
json & operator << (json & j, unsigned char d) throw() { return j << json::integer_u(d); }
inline
json & operator << (json & j, short int d) throw() { return j << json::integer(d); }
inline
json & operator << (json & j, unsigned short int d) throw() { return j << json::integer_u(d); }
inline
json & operator << (json & j, int d) throw() { return j << json::integer(d); }
inline
json & operator << (json & j, unsigned int d) throw() { return j << json::integer_u(d); }
inline
json & operator << (json & j, long int d) throw() { return j << json::integer(d); }
inline
json & operator << (json & j, unsigned long int d) throw() { return j << json::integer_u(d); }
inline
json & operator << (json & j, long long int d) throw() { return j << json::integer(d); }
inline
json & operator << (json & j, unsigned long long int d) throw() { return j << json::integer_u(d); }
inline
json::operator bool() const throw() { return good(); }
inline
bool json::good() const throw() { return _stream && ferror(_stream) == 0; }
inline
bool json::eof() const throw() { return feof(_stream) != 0; }
} // namespace graphite2
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