ostream_utils.h

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#pragma once
/* Copyright (c) 2026, Oracle and/or its affiliates.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.
 
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   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License, version 2.0, for more details.
 
   You should have received a copy of the GNU General Public License
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   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
 
#include <ostream>
 
#include "sql/json_duality_view/content_tree.h"
 
#if defined(JX_)
#error "JX_ is already defined"
#else
#define JX_(arg) #arg << ":" << (arg) << " "
#endif
 
#if defined(RFL)
#error "RFL is already defined"
#else
#define RFL(x) #x << ":" << (em_wrap(x)) << " "
#endif
 
class Json_dom;
class Json_path;
namespace jdv {
const char *str(const Content_tree_node::Type &ctnt);
std::ostream &operator<<(std::ostream &, const Content_tree_node &);
std::ostream &operator<<(std::ostream &, const Key_column_info &);
 
std::string path_str(const Json_dom *);
 
decltype(auto) func_or(auto *p, auto f, auto val) {
  if (p == nullptr) {
    return val;
  }
  return f(*p);
}
}  // namespace jdv