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#ifndef INCLUDES_TARANTOOL_BOX_VY_ENTRY_H
#define INCLUDES_TARANTOOL_BOX_VY_ENTRY_H
/*
* Copyright 2010-2016, Tarantool AUTHORS, please see AUTHORS file.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY AUTHORS ``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
* AUTHORS 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.
*/
#include <stdbool.h>
#include <stddef.h>
#include "tuple_compare.h" /* hint_t */
#if defined(__cplusplus)
extern "C" {
#endif /* defined(__cplusplus) */
struct tuple;
/**
* A helper struct that encapsulates a tuple with a comparison hint.
* It is used for storing statements in vinyl containers, e.g. cache
* or memory tree. Passed around by value.
*/
struct vy_entry {
struct tuple *stmt;
hint_t hint;
};
/**
* Return an entry that doesn't point to any statement.
*/
static inline struct vy_entry
vy_entry_none(void)
{
struct vy_entry entry;
entry.stmt = NULL;
entry.hint = HINT_NONE;
return entry;
}
/**
* Return true if two entries point to the same statements.
*/
static inline bool
vy_entry_is_equal(struct vy_entry a, struct vy_entry b)
{
return a.stmt == b.stmt && a.hint == b.hint;
}
#if defined(__cplusplus)
} /* extern "C" */
#endif /* defined(__cplusplus) */
#endif /* INCLUDES_TARANTOOL_BOX_VY_ENTRY_H */
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