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// Copyright 2013-2025 Daniel Parker
// Distributed under the Boost license, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// See https://github.com/danielaparker/jsoncons for latest version
#ifndef JSONCONS_EXT_JSONPATH_JSON_QUERY_HPP
#define JSONCONS_EXT_JSONPATH_JSON_QUERY_HPP
#include <type_traits>
#include <jsoncons/allocator_set.hpp>
#include <jsoncons/json_type_traits.hpp>
#include <jsoncons/tag_type.hpp>
#include <jsoncons/utility/extension_traits.hpp>
#include <jsoncons_ext/jsonpath/token_evaluator.hpp>
#include <jsoncons_ext/jsonpath/jsonpath_expression.hpp>
#include <jsoncons_ext/jsonpath/jsonpath_parser.hpp>
#include <jsoncons_ext/jsonpath/path_node.hpp>
namespace jsoncons {
namespace jsonpath {
template <typename Json,typename JsonReference = const Json&>
struct legacy_jsonpath_traits
{
using char_type = typename Json::char_type;
using string_type = typename Json::string_type;
using string_view_type = typename Json::string_view_type;
using element_type = Json;
using value_type = typename std::remove_cv<Json>::type;
using reference = JsonReference;
using const_reference = const value_type&;
using pointer = typename std::conditional<std::is_const<typename std::remove_reference<reference>::type>::value,typename Json::const_pointer,typename Json::pointer>::type;
using allocator_type = typename value_type::allocator_type;
using evaluator_type = typename jsoncons::jsonpath::detail::jsonpath_evaluator<value_type, reference>;
using path_node_type = basic_path_node<typename Json::char_type>;
using path_expression_type = jsoncons::jsonpath::detail::path_expression<value_type,reference>;
using path_pointer = const path_node_type*;
};
template <typename Json>
Json json_query(const Json& root,
const typename Json::string_view_type& path,
result_options options = result_options(),
const custom_functions<Json>& functions = custom_functions<Json>())
{
auto expr = make_expression<Json>(path, functions);
return expr.evaluate(root, options);
}
template <typename Json,typename Callback>
typename std::enable_if<extension_traits::is_binary_function_object<Callback,const typename Json::string_type&,const Json&>::value,void>::type
json_query(const Json& root,
const typename Json::string_view_type& path,
Callback callback,
result_options options = result_options(),
const custom_functions<Json>& functions = custom_functions<Json>())
{
auto expr = make_expression<Json>(path, functions);
expr.evaluate(root, callback, options);
}
template <typename Json,typename TempAllocator >
Json json_query(const allocator_set<typename Json::allocator_type,TempAllocator>& alloc_set,
const Json& root, const typename Json::string_view_type& path,
result_options options = result_options(),
const custom_functions<Json>& functions = custom_functions<Json>())
{
auto expr = make_expression<Json>(alloc_set, path, functions);
return expr.evaluate(root, options);
}
template <typename Json,typename Callback,typename TempAllocator >
typename std::enable_if<extension_traits::is_binary_function_object<Callback,const typename Json::string_type&,const Json&>::value,void>::type
json_query(const allocator_set<typename Json::allocator_type,TempAllocator>& alloc_set,
const Json& root, const typename Json::string_view_type& path,
Callback callback,
result_options options = result_options(),
const custom_functions<Json>& functions = custom_functions<Json>())
{
auto expr = make_expression<Json>(alloc_set, path, functions);
expr.evaluate(root, callback, options);
}
template <typename Json,typename T>
typename std::enable_if<is_json_type_traits_specialized<Json,T>::value,void>::type
json_replace(Json& root, const typename Json::string_view_type& path, T&& new_value,
const custom_functions<Json>& funcs = custom_functions<Json>())
{
using jsonpath_traits_type = jsoncons::jsonpath::legacy_jsonpath_traits<Json, Json&>;
using value_type = typename jsonpath_traits_type::value_type;
using reference = typename jsonpath_traits_type::reference;
using evaluator_type = typename jsonpath_traits_type::evaluator_type;
using path_expression_type = typename jsonpath_traits_type::path_expression_type;
using path_node_type = typename jsonpath_traits_type::path_node_type;
auto resources = jsoncons::make_unique<jsoncons::jsonpath::detail::static_resources<value_type>>(funcs);
evaluator_type evaluator;
path_expression_type expr = evaluator.compile(*resources, path);
jsoncons::jsonpath::detail::eval_context<Json,reference> context;
auto callback = [&new_value](const path_node_type&, reference v)
{
v = std::forward<T>(new_value);
};
result_options options = result_options::nodups | result_options::path | result_options::sort_descending;
expr.evaluate(context, root, path_node_type{}, root, callback, options);
}
template <typename Json,typename T,typename TempAllocator >
typename std::enable_if<is_json_type_traits_specialized<Json,T>::value,void>::type
json_replace(const allocator_set<typename Json::allocator_type,TempAllocator>& alloc_set,
Json& root, const typename Json::string_view_type& path, T&& new_value,
const custom_functions<Json>& funcs = custom_functions<Json>())
{
using jsonpath_traits_type = jsoncons::jsonpath::legacy_jsonpath_traits<Json, Json&>;
using value_type = typename jsonpath_traits_type::value_type;
using reference = typename jsonpath_traits_type::reference;
using evaluator_type = typename jsonpath_traits_type::evaluator_type;
using path_expression_type = typename jsonpath_traits_type::path_expression_type;
using path_node_type = typename jsonpath_traits_type::path_node_type;
auto resources = jsoncons::make_unique<jsoncons::jsonpath::detail::static_resources<value_type>>(funcs, alloc_set.get_allocator());
evaluator_type evaluator{alloc_set.get_allocator()};
path_expression_type expr = evaluator.compile(*resources, path);
jsoncons::jsonpath::detail::eval_context<Json,reference> context{alloc_set.get_allocator()};
auto callback = [&new_value](const path_node_type&, reference v)
{
v = Json(std::forward<T>(new_value), semantic_tag::none);
};
result_options options = result_options::nodups | result_options::path | result_options::sort_descending;
expr.evaluate(context, root, path_node_type{}, root, callback, options);
}
template <typename Json,typename BinaryCallback>
typename std::enable_if<extension_traits::is_binary_function_object<BinaryCallback,const typename Json::string_type&,Json&>::value,void>::type
json_replace(Json& root, const typename Json::string_view_type& path , BinaryCallback callback,
const custom_functions<Json>& funcs = custom_functions<Json>())
{
using jsonpath_traits_type = jsoncons::jsonpath::legacy_jsonpath_traits<Json, Json&>;
using value_type = typename jsonpath_traits_type::value_type;
using reference = typename jsonpath_traits_type::reference;
using evaluator_type = typename jsonpath_traits_type::evaluator_type;
using path_expression_type = typename jsonpath_traits_type::path_expression_type;
using path_node_type = typename jsonpath_traits_type::path_node_type;
auto resources = jsoncons::make_unique<jsoncons::jsonpath::detail::static_resources<value_type>>(funcs);
evaluator_type evaluator;
path_expression_type expr = evaluator.compile(*resources, path);
jsoncons::jsonpath::detail::eval_context<Json,reference> context;
auto f = [&callback](const path_node_type& path, reference val)
{
callback(to_basic_string(path), val);
};
result_options options = result_options::nodups | result_options::path | result_options::sort_descending;
expr.evaluate(context, root, path_node_type{}, root, f, options);
}
template <typename Json,typename BinaryCallback,typename TempAllocator >
typename std::enable_if<extension_traits::is_binary_function_object<BinaryCallback,const typename Json::string_type&,Json&>::value,void>::type
json_replace(const allocator_set<typename Json::allocator_type,TempAllocator>& alloc_set,
Json& root, const typename Json::string_view_type& path , BinaryCallback callback,
const custom_functions<Json>& funcs = custom_functions<Json>())
{
using jsonpath_traits_type = jsoncons::jsonpath::legacy_jsonpath_traits<Json, Json&>;
using value_type = typename jsonpath_traits_type::value_type;
using reference = typename jsonpath_traits_type::reference;
using evaluator_type = typename jsonpath_traits_type::evaluator_type;
using path_expression_type = typename jsonpath_traits_type::path_expression_type;
using path_node_type = typename jsonpath_traits_type::path_node_type;
auto resources = jsoncons::make_unique<jsoncons::jsonpath::detail::static_resources<value_type>>(funcs, alloc_set.get_allocator());
evaluator_type evaluator{alloc_set.get_allocator()};
path_expression_type expr = evaluator.compile(*resources, path);
jsoncons::jsonpath::detail::eval_context<Json,reference> context{alloc_set.get_allocator()};
auto f = [&callback](const path_node_type& path, reference val)
{
callback(to_basic_string(path), val);
};
result_options options = result_options::nodups | result_options::path | result_options::sort_descending;
expr.evaluate(context, root, path_node_type{}, root, f, options);
}
// Legacy replace function
template <typename Json,typename UnaryCallback>
typename std::enable_if<extension_traits::is_unary_function_object<UnaryCallback,Json>::value,void>::type
json_replace(Json& root, const typename Json::string_view_type& path , UnaryCallback callback)
{
using jsonpath_traits_type = jsoncons::jsonpath::legacy_jsonpath_traits<Json, Json&>;
using value_type = typename jsonpath_traits_type::value_type;
using reference = typename jsonpath_traits_type::reference;
using evaluator_type = typename jsonpath_traits_type::evaluator_type;
using path_expression_type = typename jsonpath_traits_type::path_expression_type;
using path_node_type = typename jsonpath_traits_type::path_node_type;
auto resources = jsoncons::make_unique<jsoncons::jsonpath::detail::static_resources<value_type>>();
evaluator_type evaluator;
path_expression_type expr = evaluator.compile(*resources, path);
jsoncons::jsonpath::detail::eval_context<Json,reference> context;
auto f = [callback](const path_node_type&, reference v)
{
v = callback(v);
};
result_options options = result_options::nodups | result_options::path | result_options::sort_descending;
expr.evaluate(context, root, path_node_type{}, root, f, options);
}
} // namespace jsonpath
} // namespace jsoncons
#endif // JSONCONS_EXT_JSONPATH_JSON_QUERY_HPP
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