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/*
fuzzylite (R), a fuzzy logic control library in C++.
Copyright (C) 2010-2017 FuzzyLite Limited. All rights reserved.
Author: Juan Rada-Vilela, Ph.D. <jcrada@fuzzylite.com>
This file is part of fuzzylite.
fuzzylite is free software: you can redistribute it and/or modify it under
the terms of the FuzzyLite License included with the software.
You should have received a copy of the FuzzyLite License along with
fuzzylite. If not, see <http://www.fuzzylite.com/license/>.
fuzzylite is a registered trademark of FuzzyLite Limited.
*/
#include "fl/rule/Expression.h"
#include "fl/hedge/Hedge.h"
#include "fl/term/Term.h"
#include "fl/rule/Rule.h"
#include "fl/variable/Variable.h"
namespace fl {
Expression::Expression() { }
Expression::~Expression() { }
Proposition::Proposition() : Expression(),
variable(fl::null), term(fl::null) { }
Proposition::~Proposition() {
for (std::size_t i = 0; i < hedges.size(); ++i) {
delete hedges.at(i);
}
hedges.clear();
}
Expression::Type Proposition::type() const {
return Expression::Proposition;
}
std::string Proposition::toString() const {
std::ostringstream ss;
if (variable) {
ss << variable->getName();
} else {
ss << "?";
}
if (not hedges.empty()) {
ss << " " << Rule::isKeyword() << " ";
for (std::size_t i = 0; i < hedges.size(); ++i) {
ss << hedges.at(i)->name() << " ";
}
}
if (term) { //term is fl::null if hedge is any
if (hedges.empty()) {
ss << " " << Rule::isKeyword() << " ";
}
ss << term->getName();
}
return ss.str();
}
Operator::Operator() : Expression(),
name(""), left(fl::null), right(fl::null) { }
Operator::~Operator() {
if (left) delete left;
if (right) delete right;
}
Expression::Type Operator::type() const {
return Expression::Operator;
}
std::string Operator::toString() const {
return name;
}
}
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