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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.
*/
/** \file
* \brief Anchored acyclic graph -> DFA analysis.
*/
#include "ng_anchored_acyclic.h"
#include "ng_holder.h"
#include "ng_reports.h"
#include "ng_util.h"
#include "ue2common.h"
#include "rose/rose_build.h"
#include "util/compile_context.h"
namespace ue2 {
bool splitOffAnchoredAcyclic(RoseBuild &rose, const NGHolder &h,
const CompileContext &cc) {
if (!cc.grey.allowAnchoredAcyclic) {
return false;
}
if (!isAnchored(h)) {
DEBUG_PRINTF("fail, not anchored\n");
return false;
}
if (!isAcyclic(h)) {
DEBUG_PRINTF("fail, not acyclic\n");
return false;
}
if (rose.addAnchoredAcyclic(h)) {
return true;
} else {
DEBUG_PRINTF("failed to add anchored nfa\n");
return false;
}
}
} // namespace ue2
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