json.h

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/*
  Copyright (C) 2025-2026  Sutou Kouhei <kou@clear-code.com>
 
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/
 
#pragma once
 
#ifdef __cplusplus
extern "C" {
#endif
 
typedef struct _grn_json_parser grn_json_parser;
 
GRN_API grn_json_parser *
grn_json_parser_open(grn_ctx *ctx, grn_obj *input, grn_obj *output);
 
GRN_API grn_rc
grn_json_parser_close(grn_ctx *ctx, grn_json_parser *parser);
 
GRN_API grn_rc
grn_json_parser_parse(grn_ctx *ctx, grn_json_parser *parser);
 
typedef struct _grn_json_reader grn_json_reader;
 
GRN_API grn_json_reader *
grn_json_reader_open(grn_ctx *ctx, grn_obj *json);
 
GRN_API grn_rc
grn_json_reader_close(grn_ctx *ctx, grn_json_reader *reader);
 
typedef enum {
  GRN_JSON_VALUE_UNKNOWN,
  GRN_JSON_VALUE_NULL,
  GRN_JSON_VALUE_FALSE,
  GRN_JSON_VALUE_TRUE,
  GRN_JSON_VALUE_INT64,
  GRN_JSON_VALUE_FLOAT,
  GRN_JSON_VALUE_STRING,
  GRN_JSON_VALUE_ARRAY,
  GRN_JSON_VALUE_OBJECT,
} grn_json_value_type;
 
GRN_API const char *
grn_json_value_type_to_string(grn_json_value_type type);
 
GRN_API grn_rc
grn_json_reader_next(grn_ctx *ctx, grn_json_reader *reader);
 
GRN_API grn_json_value_type
grn_json_reader_get_type(grn_ctx *ctx, grn_json_reader *reader);
 
GRN_API grn_obj *
grn_json_reader_get_value(grn_ctx *ctx, grn_json_reader *reader);
 
GRN_API size_t
grn_json_reader_get_size(grn_ctx *ctx, grn_json_reader *reader);
 
GRN_API grn_rc
grn_json_to_string(grn_ctx *ctx, grn_obj *json, grn_obj *buffer);
 
typedef struct _grn_json_path grn_json_path;
 
GRN_API grn_json_path *
grn_json_path_open(grn_ctx *ctx, const char *path, int64_t path_length);
 
GRN_API grn_rc
grn_json_path_close(grn_ctx *ctx, grn_json_path *path);
 
GRN_API grn_rc
grn_json_extract(grn_ctx *ctx,
                 grn_obj *json,
                 grn_json_path *path,
                 grn_obj *values);
 
#ifdef __cplusplus
}
#endif