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/CoveringArrayEntry.C | 102 +++++++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100644 casa/covering/state/CoveringArrayEntry.C

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

diff --git a/casa/covering/state/CoveringArrayEntry.C b/casa/covering/state/CoveringArrayEntry.C
new file mode 100644
index 0000000..73e6e24
--- /dev/null
+++ b/casa/covering/state/CoveringArrayEntry.C
@@ -0,0 +1,102 @@
+// 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::Entry::updateTracking(unsigned value) {
+  if (owner(row,option) == value) {
+    return;
+  }
+  unsigned strength = owner.coverage.getStrength();
+  unsigned limit = owner.coverage.getOptions().getSize();
+  Array<unsigned>firsts = owner.coverage.getOptions().getFirstSymbols();
+  Array<unsigned>counts = owner.coverage.getOptions().getSymbolCounts();
+  unsigned hint = 0;
+  for (Array<unsigned>
+	 columns = combinadic.begin(strength),
+	 symbols(strength);
+       columns[strength - 1] < limit;
+       combinadic.next(columns), ++hint) {
+    for (unsigned i = strength; i--;) {
+      if (columns[i] == option) {
+	for (unsigned j = strength; j--;) {
+	  symbols[j] = owner(row, columns[j]);
+	}
+	InputKnown oldKnown(symbols);
+	if ((*owner.solver)(oldKnown) &&
+	    --owner.coverage.hintGet(hint, columns, firsts, counts, symbols) ==
+	    0) {
+	  --owner.coverageCount;
+	  if (owner.trackingNoncoverage) {
+	    Array<unsigned>separateCopyOfSymbols(symbols.getSize());
+	    for (unsigned j = symbols.getSize(); j--;) {
+	      separateCopyOfSymbols[j] = symbols[j];
+	    }
+	    bool successfulInsertion =
+	      owner.noncoverage->insert(separateCopyOfSymbols).second;
+	    assert(successfulInsertion);
+	    (void)successfulInsertion; // This is unused without assertions.
+	  }
+	} else {
+	  --owner.multipleCoverageCount;
+	}
+	symbols[i] = value;
+	InputKnown newKnown(symbols);
+	if ((*owner.solver)(newKnown) &&
+	    ++owner.coverage.hintGet(hint, columns, firsts, counts, symbols) ==
+	    1) {
+	  ++owner.coverageCount;
+	  if (owner.trackingNoncoverage) {
+	    Array<unsigned>separateCopyOfSymbols(symbols.getSize());
+	    for (unsigned j = symbols.getSize(); j--;) {
+	      separateCopyOfSymbols[j] = symbols[j];
+	    }
+	    bool successfulErasure =
+	      (bool)owner.noncoverage->erase(separateCopyOfSymbols);
+	    assert(successfulErasure);
+	    (void)successfulErasure; // This is unused without assertions.
+	  }
+	} else {
+	  ++owner.multipleCoverageCount;
+	}
+	break;
+      }
+    }
+  }
+  owner.autoFinalizeSubstitutions();
+}
+
+CoveringArray::Entry::operator unsigned() const {
+  map<pair<unsigned, unsigned>, unsigned>::const_iterator
+    substitution =
+      owner.substitutions->find(pair<unsigned, unsigned>(row,option)),
+    end = owner.substitutions->end();
+  return (substitution == end) ?
+    owner.array[row][option] :
+    substitution->second;
+}
+
+CoveringArray::Entry&CoveringArray::Entry::operator =(unsigned value) {
+  if (owner.trackingCoverage) {
+    updateTracking(value);
+  }
+  (*owner.substitutions)[pair<unsigned, unsigned>(row, option)] = value;
+  return *this;
+}
-- 
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