From 76729f9670ba63a9146079b081bdb5b5ae0bbd3d Mon Sep 17 00:00:00 2001
From: Kenny Ballou <kballou@devnulllabs.io>
Date: Fri, 28 Feb 2020 15:36:09 -0700
Subject: CASA fork: initial commit

Snapshot from http://cse.unl.edu/~citportal/.
---
 casa/covering/state/CoveringArrayRow.C | 113 +++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 casa/covering/state/CoveringArrayRow.C

(limited to 'casa/covering/state/CoveringArrayRow.C')

diff --git a/casa/covering/state/CoveringArrayRow.C b/casa/covering/state/CoveringArrayRow.C
new file mode 100644
index 0000000..10f0a45
--- /dev/null
+++ b/casa/covering/state/CoveringArrayRow.C
@@ -0,0 +1,113 @@
+// Copyright 2008, 2009 Brady J. Garvin
+
+// This file is part of Covering Arrays by Simulated Annealing (CASA).
+
+// CASA is free software: you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// CASA is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with CASA.  If not, see <http://www.gnu.org/licenses/>.
+
+
+#include "covering/state/CoveringArray.H"
+
+using namespace std;
+
+void CoveringArray::Row::updateTracking(const Array<unsigned>values) {
+  unsigned size = values.getSize();
+  assert(size == owner.getOptions());
+  unsigned strength = owner.coverage.getStrength();
+  unsigned limit = owner.coverage.getOptions().getSize();
+  Array<unsigned>oldRow(size);
+  for (unsigned i = size; i--;) {
+    oldRow[i] = owner(row, i);
+  }
+  Array<unsigned>firsts = owner.coverage.getOptions().getFirstSymbols();
+  Array<unsigned>counts = owner.coverage.getOptions().getSymbolCounts();
+  unsigned hint = 0;
+  for (Array<unsigned>
+	 columns = combinadic.begin(strength),
+	 oldSymbols(strength),
+	 newSymbols(strength);
+       columns[strength - 1] < limit;
+       combinadic.next(columns), ++hint) {
+    bool unchanged = true;
+    for (unsigned j = strength; j--;) {
+      unsigned column = columns[j];
+      oldSymbols[j] = oldRow[column];
+      newSymbols[j] = values[column];
+      if (oldSymbols[j] != newSymbols[j]) {
+	unchanged = false;
+      }
+    }
+    if (unchanged) {
+      continue;
+    }
+    InputKnown oldKnown(oldSymbols);
+    InputKnown newKnown(newSymbols);
+    if (--owner.coverage.hintGet(hint, columns, firsts, counts, oldSymbols) ==
+	0) {
+      --owner.coverageCount;
+      if (owner.trackingNoncoverage) {
+	Array<unsigned>separateCopyOfSymbols(oldSymbols.getSize());
+	for (unsigned j = oldSymbols.getSize(); j--;) {
+	  separateCopyOfSymbols[j] = oldSymbols[j];
+	}
+	bool successfulInsertion =
+	  owner.noncoverage->insert(separateCopyOfSymbols).second;
+	assert(successfulInsertion);
+	(void)successfulInsertion; //This is unused without assertions.
+      }
+    } else {
+      --owner.multipleCoverageCount;
+    }
+    if (++owner.coverage.hintGet(hint, columns, firsts, counts, newSymbols) ==
+	1) {
+      ++owner.coverageCount;
+      if (owner.trackingNoncoverage) {
+	Array<unsigned>separateCopyOfSymbols(newSymbols.getSize());
+	for (unsigned j = newSymbols.getSize(); j--;) {
+	  separateCopyOfSymbols[j] = newSymbols[j];
+	}
+	bool successfulErasure =
+	  (bool)owner.noncoverage->erase(separateCopyOfSymbols);
+	assert(successfulErasure);
+	(void)successfulErasure; // This is unused without assertions.
+      }
+    } else {
+      ++owner.multipleCoverageCount;
+    }
+  }
+  owner.autoFinalizeSubstitutions();
+}
+
+CoveringArray::Row::operator Array<unsigned>() const {
+  typedef map<pair<unsigned,unsigned>,unsigned>::const_iterator Substitution;
+  Substitution end = owner.substitutions->end();
+  Array<unsigned>result(owner.getOptions());
+  for (pair<unsigned, unsigned>key(row, result.getSize()); key.second--;) {
+    Substitution substitution = owner.substitutions->find(key);
+    result[key.second] =
+      (substitution == end) ?
+      owner.array[row][key.second] :
+      substitution->second;
+  }
+  return result;
+}
+
+CoveringArray::Row&CoveringArray::Row::operator =(const Array<unsigned>values) {
+  if (owner.trackingCoverage) {
+    updateTracking(values);
+  }
+  for (pair<unsigned, unsigned>key(row, owner.getOptions()); key.second--;) {
+    (*owner.substitutions)[key] = values[key.second];
+  }
+  return *this;
+}
-- 
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