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/**************************************************************************
* *
* Regina - A Normal Surface Theory Calculator *
* Computational Engine *
* *
* Copyright (c) 1999-2011, Ben Burton *
* For further details contact Ben Burton (bab@debian.org). *
* *
* This program 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 2 of the *
* License, or (at your option) any later version. *
* *
* This program 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 this program; if not, write to the Free *
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *
* MA 02110-1301, USA. *
* *
**************************************************************************/
/* end stub */
#include <list>
#include "surfaces/nxmlfilterreader.h"
#include "surfaces/sfcombination.h"
#include "surfaces/sfproperties.h"
#include "utilities/stringutils.h"
namespace regina {
/**
* A unique namespace containing XML readers for specific filter types.
*/
namespace {
/**
* Reads a plain (non-subclassed) NSurfaceFilter.
*/
class NPlainFilterReader : public NXMLFilterReader {
private:
NSurfaceFilter* filter;
public:
NPlainFilterReader() : filter(new NSurfaceFilter()) {
}
virtual NSurfaceFilter* getFilter() {
return filter;
}
};
/**
* Reads an NSurfaceFilterCombination filter.
*/
class NCombinationReader : public NXMLFilterReader {
private:
NSurfaceFilterCombination* filter;
public:
NCombinationReader() : filter(0) {
}
virtual NSurfaceFilter* getFilter() {
return filter;
}
NXMLElementReader* startSubElement(const std::string& subTagName,
const regina::xml::XMLPropertyDict& props) {
if (! filter)
if (subTagName == "op") {
std::string type = props.lookup("type");
if (type == "and") {
filter = new NSurfaceFilterCombination();
filter->setUsesAnd(true);
} else if (type == "or") {
filter = new NSurfaceFilterCombination();
filter->setUsesAnd(false);
}
}
return new NXMLElementReader();
}
};
/**
* Reads an NSurfaceFilterProperties filter.
*/
class NPropertiesReader : public NXMLFilterReader {
private:
NSurfaceFilterProperties* filter;
public:
NPropertiesReader() : filter(new NSurfaceFilterProperties()) {
}
virtual NSurfaceFilter* getFilter() {
return filter;
}
NXMLElementReader* startSubElement(const std::string& subTagName,
const regina::xml::XMLPropertyDict& props) {
if (subTagName == "euler") {
return new NXMLCharsReader();
} else if (subTagName == "orbl") {
NBoolSet b;
if (valueOf(props.lookup("value"), b))
filter->setOrientability(b);
} else if (subTagName == "compact") {
NBoolSet b;
if (valueOf(props.lookup("value"), b))
filter->setCompactness(b);
} else if (subTagName == "realbdry") {
NBoolSet b;
if (valueOf(props.lookup("value"), b))
filter->setRealBoundary(b);
}
return new NXMLElementReader();
}
void endSubElement(
const std::string& subTagName,
NXMLElementReader* subReader) {
if (subTagName == "euler") {
std::list<std::string> tokens;
basicTokenise(back_inserter(tokens),
dynamic_cast<NXMLCharsReader*>(subReader)->getChars());
NLargeInteger val;
for (std::list<std::string>::const_iterator it =
tokens.begin(); it != tokens.end(); it++)
if (valueOf(*it, val))
filter->addEC(val);
}
}
};
}
NXMLFilterReader* NSurfaceFilter::getXMLFilterReader(NPacket*) {
return new NPlainFilterReader();
}
NXMLFilterReader* NSurfaceFilterCombination::getXMLFilterReader(NPacket*) {
return new NCombinationReader();
}
NXMLFilterReader* NSurfaceFilterProperties::getXMLFilterReader(NPacket*) {
return new NPropertiesReader();
}
} // namespace regina
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