mirror of
https://github.com/simdjson/simdjson
synced 2026-06-08 17:27:07 +00:00
John Keiser
114 lines
3.9 KiB
C++
114 lines
3.9 KiB
C++
#ifndef SIMDJSON_INTERNAL_DOM_PARSER_IMPLEMENTATION_H
|
|
#define SIMDJSON_INTERNAL_DOM_PARSER_IMPLEMENTATION_H
|
|
|
|
#include "simdjson/common_defs.h"
|
|
#include "simdjson/error.h"
|
|
#include <memory>
|
|
|
|
namespace simdjson {
|
|
|
|
namespace dom {
|
|
class parser;
|
|
} // namespace dom
|
|
|
|
namespace internal {
|
|
|
|
/**
|
|
* An implementation of simdjson's DOM parser for a particular CPU architecture.
|
|
*/
|
|
class dom_parser_implementation {
|
|
public:
|
|
/**
|
|
* @private For internal implementation use
|
|
*
|
|
* Run a full JSON parse on a single document (stage1 + stage2).
|
|
*
|
|
* Guaranteed only to be called when capacity > document length.
|
|
*
|
|
* Overridden by each implementation.
|
|
*
|
|
* @param buf The json document to parse. *MUST* be allocated up to len + SIMDJSON_PADDING bytes.
|
|
* @param len The length of the json document.
|
|
* @param parser The parser object. TODO replace this with dom::document & when state is moved to the implementation.
|
|
* @return The error code, or SUCCESS if there was no error.
|
|
*/
|
|
WARN_UNUSED virtual error_code parse(const uint8_t *buf, size_t len, dom::parser &parser) noexcept = 0;
|
|
|
|
/**
|
|
* @private For internal implementation use
|
|
*
|
|
* Stage 1 of the document parser.
|
|
*
|
|
* Guaranteed only to be called when capacity > document length.
|
|
*
|
|
* Overridden by each implementation.
|
|
*
|
|
* @param buf The json document to parse.
|
|
* @param len The length of the json document.
|
|
* @param parser The parser object. TODO replace this with structural_indexes & when state is moved to the implementation.
|
|
* @param streaming Whether this is being called by parser::parse_many.
|
|
* @return The error code, or SUCCESS if there was no error.
|
|
*/
|
|
WARN_UNUSED virtual error_code stage1(const uint8_t *buf, size_t len, dom::parser &parser, bool streaming) noexcept = 0;
|
|
|
|
/**
|
|
* @private For internal implementation use
|
|
*
|
|
* Stage 2 of the document parser.
|
|
*
|
|
* Guaranteed only to be called after stage1(), with the same buf/len as stage1().
|
|
*
|
|
* Overridden by each implementation.
|
|
*
|
|
* @param parser The parser object. TODO replace this with dom::document & when state is moved to the implementation.
|
|
* @return The error code, or SUCCESS if there was no error.
|
|
*/
|
|
WARN_UNUSED virtual error_code stage2(dom::parser &parser) noexcept = 0;
|
|
|
|
/**
|
|
* @private For internal implementation use
|
|
*
|
|
* Stage 2 of the document parser for parser::parse_many.
|
|
*
|
|
* Guaranteed only to be called after stage1(), with buf and len being a subset of the total stage1 buf/len.
|
|
* Overridden by each implementation.
|
|
*
|
|
* @param buf The json document to parse.
|
|
* @param len The length of the json document.
|
|
* @param parser The parser object. TODO replace this with dom::document & when state is moved to the implementation.
|
|
* @param next_json The next structural index. Start this at 0 the first time, and it will be updated to the next value to pass each time.
|
|
* @return The error code, SUCCESS if there was no error, or SUCCESS_AND_HAS_MORE if there was no error and stage2 can be called again.
|
|
*/
|
|
WARN_UNUSED virtual error_code stage2(const uint8_t *buf, size_t len, dom::parser &parser, size_t &next_json) noexcept = 0;
|
|
|
|
/**
|
|
* Change the capacity of this parser.
|
|
*
|
|
* Generally used for reallocation.
|
|
*
|
|
* @param capacity The new capacity.
|
|
* @param max_depth The new max_depth.
|
|
* @return The error code, or SUCCESS if there was no error.
|
|
*/
|
|
virtual error_code set_capacity(size_t capacity) noexcept = 0;
|
|
|
|
/**
|
|
* Change the max depth of this parser.
|
|
*
|
|
* Generally used for reallocation.
|
|
*
|
|
* @param capacity The new capacity.
|
|
* @param max_depth The new max_depth.
|
|
* @return The error code, or SUCCESS if there was no error.
|
|
*/
|
|
virtual error_code set_max_depth(size_t max_depth) noexcept = 0;
|
|
|
|
virtual ~dom_parser_implementation()=default;
|
|
|
|
}; // class dom_parser_implementation
|
|
|
|
} // namespace internal
|
|
} // namespace simdjson
|
|
|
|
#endif // SIMDJSON_INTERNAL_DOM_PARSER_IMPLEMENTATION_H
|