parser_state.hpp

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#pragma once
 
/// @file userver/formats/json/parser/parser_state.hpp
/// @brief @copybrief formats::json::parser::ParserState
/// @ingroup userver_universal
 
#include <string>
 
#include <userver/utils/fast_pimpl.hpp>
 
USERVER_NAMESPACE_BEGIN
 
namespace formats::json::parser {
 
class BaseParser;
class ParserHandler;
 
/// @brief Parser stack and streaming driver for JSON SAX parsing.
class ParserState final {
public:
    ParserState();
    ParserState(const ParserState&) = delete;
    ParserState(ParserState&&) = delete;
    ~ParserState();
 
    ParserState& operator=(const ParserState&) = delete;
 
    void PushParser(BaseParser& parser);
 
    void ProcessInput(std::string_view sw);
 
    void PopMe(BaseParser& parser);
 
    [[noreturn]] void ThrowError(const std::string& err_msg);
 
    std::string GetCurrentPath() const;
 
private:
    BaseParser& GetTopParser() const;
 
    struct Impl;
    utils::FastPimpl<Impl, 792, 8> impl_;
 
    friend class ParserHandler;
};
 
}  // namespace formats::json::parser
 
USERVER_NAMESPACE_END