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/*
* Copyright (c) 2021, Redis Labs Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Redis nor the names of its contributors may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SRC_RESP_PARSER_H_
#define SRC_RESP_PARSER_H_
#include <stddef.h>
typedef struct ReplyParser ReplyParser;
typedef struct ReplyParserCallbacks {
/* Called when the parser reaches an empty mbulk ('*-1') */
void (*null_array_callback)(void *ctx, const char *proto, size_t proto_len);
/* Called when the parser reaches an empty bulk ('$-1') (bulk len is -1) */
void (*null_bulk_string_callback)(void *ctx, const char *proto, size_t proto_len);
/* Called when the parser reaches a bulk ('$'), which is passed as 'str' along with its length 'len' */
void (*bulk_string_callback)(void *ctx, const char *str, size_t len, const char *proto, size_t proto_len);
/* Called when the parser reaches an error ('-'), which is passed as 'str' along with its length 'len' */
void (*error_callback)(void *ctx, const char *str, size_t len, const char *proto, size_t proto_len);
/* Called when the parser reaches a simple string ('+'), which is passed as 'str' along with its length 'len' */
void (*simple_str_callback)(void *ctx, const char *str, size_t len, const char *proto, size_t proto_len);
/* Called when the parser reaches a long long value (':'), which is passed as an argument 'val' */
void (*long_callback)(void *ctx, long long val, const char *proto, size_t proto_len);
/* Called when the parser reaches an array ('*'). The array length is passed as an argument 'len' */
void (*array_callback)(struct ReplyParser *parser, void *ctx, size_t len, const char *proto);
/* Called when the parser reaches a set ('~'). The set length is passed as an argument 'len' */
void (*set_callback)(struct ReplyParser *parser, void *ctx, size_t len, const char *proto);
/* Called when the parser reaches a map ('%'). The map length is passed as an argument 'len' */
void (*map_callback)(struct ReplyParser *parser, void *ctx, size_t len, const char *proto);
/* Called when the parser reaches a bool ('#'), which is passed as an argument 'val' */
void (*bool_callback)(void *ctx, int val, const char *proto, size_t proto_len);
/* Called when the parser reaches a double (','), which is passed as an argument 'val' */
void (*double_callback)(void *ctx, double val, const char *proto, size_t proto_len);
/* Called when the parser reaches a big number (','), which is passed as 'str' along with its length 'len' */
void (*big_number_callback)(void *ctx, const char *str, size_t len, const char *proto, size_t proto_len);
/* Called when the parser reaches a string, which is passed as 'str' along with its 'format' and length 'len' */
void (*verbatim_string_callback)(void *ctx, const char *format, const char *str, size_t len, const char *proto, size_t proto_len);
/* Called when the parser reaches an attribute ('|'). The attribute length is passed as an argument 'len' */
void (*attribute_callback)(struct ReplyParser *parser, void *ctx, size_t len, const char *proto);
/* Called when the parser reaches a null ('_') */
void (*null_callback)(void *ctx, const char *proto, size_t proto_len);
void (*error)(void *ctx);
} ReplyParserCallbacks;
struct ReplyParser {
/* The current location in the reply buffer, needs to be set to the beginning of the reply */
const char *curr_location;
ReplyParserCallbacks callbacks;
};
int parseReply(ReplyParser *parser, void *p_ctx);
#endif /* SRC_RESP_PARSER_H_ */
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