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/*
* Copyright (c) 2015-2017, 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 ACCEL_COMPILE_H
#define ACCEL_COMPILE_H
#include "ue2common.h"
#include "util/charreach.h"
#include "util/flat_containers.h"
union AccelAux;
namespace ue2 {
struct AccelInfo {
AccelInfo() : single_offset(0U), double_offset(0U),
single_stops(CharReach::dot()) {}
u32 single_offset; /**< offset correction to apply to single schemes */
u32 double_offset; /**< offset correction to apply to double schemes */
CharReach double_stop1; /**< single-byte accel stop literals for double
* schemes */
flat_set<std::pair<u8, u8>> double_stop2; /**< double-byte accel stop
* literals */
CharReach single_stops; /**< escapes for single byte acceleration */
};
bool buildAccelAux(const AccelInfo &info, AccelAux *aux);
/* returns true is the escape set can be handled with a masked double_verm */
bool buildDvermMask(const flat_set<std::pair<u8, u8>> &escape_set,
u8 *m1_out = nullptr, u8 *m2_out = nullptr);
} // namespace ue2
#endif
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