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// 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/bookkeeping/Options.H"
Options::Options() :
cumulativeValueCounts(0),
owningOptions(0) {}
Options::Options(Array<unsigned>values) :
cumulativeValueCounts(values.getSize()) {
unsigned cumulativeValueCount = 0;
for (unsigned i = 0; i < values.getSize(); ++i) {
cumulativeValueCount += values[i];
cumulativeValueCounts[i] = cumulativeValueCount;
}
owningOptions = Array<unsigned>(cumulativeValueCount);
for (unsigned i = 0, j = 0; i < values.getSize(); ++i) {
for (unsigned k = values[i]; k--;) {
owningOptions[j++] = i;
}
}
}
Options::Options(const Options©) :
cumulativeValueCounts(copy.cumulativeValueCounts),
owningOptions(copy.owningOptions) {}
unsigned Options::getSize() const {
return cumulativeValueCounts.getSize();
}
unsigned Options::getFirstSymbol(unsigned option) const {
return option ? cumulativeValueCounts[option - 1] : 0;
}
Array<unsigned>Options::getFirstSymbols() const {
unsigned size = cumulativeValueCounts.getSize();
Array<unsigned>result(size);
for (unsigned i = size; i-- > 1;) {
result[i] = cumulativeValueCounts[i - 1];
}
if (size) {
result[0] = 0;
}
return result;
}
unsigned Options::getSymbolCount(unsigned option) const {
return option ?
(cumulativeValueCounts[option] - cumulativeValueCounts[option - 1]) :
cumulativeValueCounts[0];
}
Array<unsigned>Options::getSymbolCounts() const {
unsigned size = cumulativeValueCounts.getSize();
Array<unsigned>result(size);
for (unsigned i = size; i-- > 1;) {
result[i] = cumulativeValueCounts[i] - cumulativeValueCounts[i - 1];
}
if (size) {
result[0] = cumulativeValueCounts[0];
}
return result;
}
unsigned Options::getLastSymbol(unsigned option) const {
return cumulativeValueCounts[option] - 1;
}
unsigned Options::getRandomSymbol(unsigned option) const {
return rand() % getSymbolCount(option) + getFirstSymbol(option);
}
unsigned Options::getOtherRandomSymbol(unsigned option, unsigned exclude)
const {
unsigned count = getSymbolCount(option);
if (count == 1) {
return getFirstSymbol(option);
}
unsigned result = rand() % (count - 1) + getFirstSymbol(option);
return (result >= exclude) ? (result + 1) : result;
}
unsigned Options::getOption(unsigned symbol) const {
return owningOptions[symbol];
}
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