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/*
* Copyright (c) 2015, Intel Corporation
*
* 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 Intel Corporation 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 ROSE_BUILD_WIDTH_H
#define ROSE_BUILD_WIDTH_H
#include "rose_build_impl.h"
#include "ue2common.h"
namespace ue2 {
class RoseBuildImpl;
/* returns a lower bound on the minimum number of bytes required for match to be
* raised up to the user which requires the given literal table to be used
*
* returns ROSE_BOUND_INF if the table can never produce matches */
u32 findMinWidth(const RoseBuildImpl &tbi, enum rose_literal_table table);
/* returns an upper bound on the maximum length of a buffer that can result in
* matches. If there are any patterns which are not bianchored (start and end
* anchored), then there is no such limit and ROSE_BOUND_INF is returned.
*/
u32 findMaxBAWidth(const RoseBuildImpl &tbi);
/* returns an upper bound on the maximum length of a buffer that can result in
* matches and requires that the given table to be used. If there are any
* patterns which are not bianchored (start and end anchored), then there is no
* such limit and ROSE_BOUND_INF is returned.
*/
u32 findMaxBAWidth(const RoseBuildImpl &tbi, enum rose_literal_table table);
/**
* Note: there is no function for determining the min width of the whole rose
* as this is more easily done by the NG layer which has access to the full
* nfagraphs before they are chopped into little pieces.
*/
} // namespace ue2
#endif
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