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// Copyright 2013 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_JSON_FILTER_HPP
#define JSONCONS_JSON_FILTER_HPP
#include <string>
#include "jsoncons/json_input_handler.hpp"
#include "jsoncons/json_output_handler.hpp"
#include "jsoncons/parse_error_handler.hpp"
namespace jsoncons {
template <typename CharT>
class basic_json_input_output_adapter : public basic_json_input_handler<CharT>
{
public:
basic_json_input_output_adapter()
: writer_(std::addressof(null_json_output_handler<CharT>()))
{
}
basic_json_input_output_adapter(basic_json_output_handler<CharT>& handler)
: writer_(std::addressof(handler))
{
}
private:
void do_begin_json() override
{
writer_->begin_json();
}
void do_end_json() override
{
writer_->end_json();
}
void do_begin_object(const basic_parsing_context<CharT>& context) override
{
writer_->begin_object();
}
void do_end_object(const basic_parsing_context<CharT>& context) override
{
writer_->end_object();
}
void do_begin_array(const basic_parsing_context<CharT>& context) override
{
writer_->begin_array();
}
void do_end_array(const basic_parsing_context<CharT>& context) override
{
writer_->end_array();
}
void do_name(const CharT* name, size_t length,
const basic_parsing_context<CharT>& context) override
{
writer_->name(name, length);
}
void do_string_value(const CharT* value, size_t length,
const basic_parsing_context<CharT>& context) override
{
writer_->value(value, length);
}
void do_integer_value(int64_t value, const basic_parsing_context<CharT>& context) override
{
writer_->value(value);
}
void do_uinteger_value(uint64_t value,
const basic_parsing_context<CharT>& context) override
{
writer_->value(value);
}
void do_double_value(double value, uint8_t precision, const basic_parsing_context<CharT>& context) override
{
writer_->value(value, precision);
}
void do_bool_value(bool value, const basic_parsing_context<CharT>& context) override
{
writer_->value(value);
}
void do_null_value(const basic_parsing_context<CharT>& context) override
{
writer_->value(null_type());
}
basic_json_output_handler<CharT>* writer_;
};
template <typename CharT>
class basic_json_filter : public basic_json_input_handler<CharT>
{
public:
basic_json_filter(basic_json_input_handler<CharT>& handler)
: handler_(std::addressof(handler)),
err_handler_(std::addressof(basic_default_parse_error_handler<CharT>::instance()))
{
}
basic_json_filter(basic_json_input_handler<CharT>& handler,
basic_parse_error_handler<CharT>& err_handler)
: handler_(std::addressof(handler)),
err_handler_(std::addressof(err_handler))
{
}
basic_json_filter(basic_json_output_handler<CharT>& output_handler)
: input_output_adapter_(output_handler), handler_(std::addressof(input_output_adapter_)),
err_handler_(std::addressof(basic_default_parse_error_handler<CharT>::instance()))
{
}
basic_json_filter(basic_json_output_handler<CharT>& output_handler,
basic_parse_error_handler<CharT>& err_handler)
: input_output_adapter_(output_handler), handler_(std::addressof(input_output_adapter_)),
err_handler_(std::addressof(err_handler))
{
}
basic_json_input_handler<CharT>& input_handler()
{
return *handler_;
}
#if !defined(JSONCONS_NO_DEPRECATED)
basic_json_input_handler<CharT>& parent()
{
return *handler_;
}
#endif
private:
void do_begin_json() override
{
handler_->begin_json();
}
void do_end_json() override
{
handler_->end_json();
}
void do_begin_object(const basic_parsing_context<CharT>& context) override
{
handler_->begin_object(context);
}
void do_end_object(const basic_parsing_context<CharT>& context) override
{
handler_->end_object(context);
}
void do_begin_array(const basic_parsing_context<CharT>& context) override
{
handler_->begin_array(context);
}
void do_end_array(const basic_parsing_context<CharT>& context) override
{
handler_->end_array(context);
}
void do_name(const CharT* name, size_t length, const basic_parsing_context<CharT>& context) override
{
handler_->name(name, length, context);
}
void do_string_value(const CharT* value, size_t length, const basic_parsing_context<CharT>& context) override
{
handler_->value(value,length,context);
}
void do_double_value(double value, uint8_t precision, const basic_parsing_context<CharT>& context) override
{
handler_->value(value,precision,context);
}
void do_integer_value(int64_t value, const basic_parsing_context<CharT>& context) override
{
handler_->value(value,context);
}
void do_uinteger_value(uint64_t value, const basic_parsing_context<CharT>& context) override
{
handler_->value(value,context);
}
void do_bool_value(bool value, const basic_parsing_context<CharT>& context) override
{
handler_->value(value,context);
}
void do_null_value(const basic_parsing_context<CharT>& context) override
{
handler_->value(null_type(),context);
}
basic_json_input_output_adapter<CharT> input_output_adapter_;
basic_json_input_handler<CharT>* handler_;
basic_parse_error_handler<CharT>* err_handler_;
};
// Filters out begin_json and end_json events
template <typename CharT>
class basic_begin_end_json_filter : public basic_json_filter<CharT>
{
public:
basic_begin_end_json_filter(basic_json_input_handler<CharT>& handler)
: basic_json_filter<CharT>(handler)
{
}
private:
void do_begin_json() override
{
}
void do_end_json() override
{
}
};
template <typename CharT>
class basic_json_output_input_adapter : public basic_json_output_handler<CharT>
{
public:
basic_json_output_input_adapter(basic_json_input_handler<CharT>& input_handler,
const basic_parsing_context<CharT>& context)
: input_handler_(std::addressof(input_handler)),
context_(std::addressof(context))
{
}
private:
void do_begin_json() override
{
input_handler_->begin_json();
}
void do_end_json() override
{
input_handler_->end_json();
}
void do_begin_object() override
{
input_handler_->begin_object(*context_);
}
void do_end_object() override
{
input_handler_->end_object(*context_);
}
void do_begin_array() override
{
input_handler_->begin_array(*context_);
}
void do_end_array() override
{
input_handler_->end_array(*context_);
}
void do_name(const CharT* name, size_t length) override
{
input_handler_->name(name, length, *context_);
}
void do_string_value(const CharT* value, size_t length) override
{
input_handler_->value(value, length, *context_);
}
void do_integer_value(int64_t value) override
{
input_handler_->value(value, *context_);
}
void do_uinteger_value(uint64_t value) override
{
input_handler_->value(value, *context_);
}
void do_double_value(double value, uint8_t precision) override
{
input_handler_->value(value, precision, *context_);
}
void do_bool_value(bool value) override
{
input_handler_->value(value, *context_);
}
void do_null_value() override
{
input_handler_->value(null_type(), *context_);
}
basic_json_input_handler<CharT>* input_handler_;
const basic_parsing_context<CharT>* context_;
};
typedef basic_json_filter<char> json_filter;
typedef basic_json_filter<wchar_t> wjson_filter;
}
#endif
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