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utils.cpp
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Created
Wed, Jul 8, 10:02 AM
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4 KB
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text/x-c++
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Fri, Jul 10, 10:02 AM (1 d, 9 h)
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272019
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rXR Xreate
utils.cpp
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* aux.cpp
*
* Author: pgess <v.melnychenko@xreate.org>
*/
/**
* \file aux.h
* \brief Data representation in ASP format ready for use by reasoner
*/
#include "utils.h"
#include <boost/format.hpp>
namespace xreate { namespace analysis {
using namespace std;
list<string>
multiplyLists(list<list<string>> &&lists) {
typedef list<string> StringList;
assert(lists.size());
StringList result(*lists.begin());
lists.pop_front();
boost::format concat("%s, %s");
for (StringList &list: lists) {
StringList::const_iterator end = result.end();
for (StringList::iterator expr1I = result.begin(); expr1I != end; ++expr1I) {
if (list.size() == 0) continue;
StringList::const_iterator expr2I = list.begin();
for (int expr2No = 0, size = list.size() - 1; expr2No < size; ++expr2No, ++expr1I)
result.push_back(str(concat %(*expr1I) %(*expr2I)));
*expr1I = str(concat %(*expr1I) %(*expr2I));
}
}
return result;
}
std::list<std::string>
compile(const Expression &e){
list<string> result;
switch (e.op) {
case Operator::CALL: {
if(!e.operands.size()){
result.push_back(e.getValueString());
break;
}
std::list<list<string>> operands;
std::transform(e.operands.begin(), e.operands.end(), std::inserter(operands, operands.begin()),
[](const Expression &e) {
return compile(e);
});
list<string> &&operands_ = multiplyLists(std::move(operands));
result.push_back(boost::str(boost::format("%1%(%2%)") % (e.getValueString()) % (boost::algorithm::join(operands_, ", "))));
break;
}
case Operator::NEG: {
assert(e.operands.size() == 1);
const Expression &op = e.operands.at(0);
list<string> &&rawOp = compile(op);
assert(rawOp.size() == 1);
result.push_back((boost::format("not %1%")%(rawOp.front())).str());
break;
};
case Operator::INVALID: {
switch (e.__state) {
case Expression::IDENT:
result.push_back(e.getValueString());
break;
case Expression::NUMBER:
result.push_back(to_string(e.getValueDouble()));
break;
default:
assert(true);
}
break;
}
default: break;
}
assert(result.size());
return result;
}
std::list<std::string>
compileNeg(const Expression &e){
list<string> result;
switch (e.op) {
case Operator::IMPL: {
assert(e.__state == Expression::COMPOUND);
assert(e.operands.size() == 2);
list<string> operands1 = compile(e.operands.at(0));
list<string> operands2 = compile(e.operands.at(1));
boost::format formatNeg("%1%, not %2%");
for (const auto &op1: operands1)
for (const auto &op2: operands2) {
result.push_back(boost::str(formatNeg %(op1) % (op2)));
}
break;
}
case Operator::NEG: {
assert(e.operands.size() == 1);
const Expression &op = e.operands.at(0);
list<string> &&rawOp = compile(op);
assert(rawOp.size() == 1);
result.push_back(rawOp.front());
break;
};
default:
assert(true);
}
return result;
}
//NOTE: Any changes should be reflected in ParseImplAtom<SymbolPacked>,
// ParseImplAtom<SymbolNode>
class VisitorFormatSymbol: public boost::static_visitor<boost::format> {
public:
boost::format operator()(const SymbolPacked& node) const {
boost::format formatSymbNamed("s(%1%,%2%,%3%)");
return formatSymbNamed % node.identifier % node.version % node.scope ;
}
boost::format operator()(const SymbolAnonymous& node) const {
boost::format formatSymbAnonymous("a(%1%)");
return formatSymbAnonymous % node.id;
}
};
boost::format writeSymbolNode(const SymbolNode& symbol){
return boost::apply_visitor(VisitorFormatSymbol(), symbol);
}
}} //end of xreate::analysis
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