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/*-----------------------------------------------------------------------------
| Copyright (c) 2013-2017, Nucleic Development Team.
|
| Distributed under the terms of the Modified BSD License.
|
| The full license is in the file COPYING.txt, distributed with this software.
|----------------------------------------------------------------------------*/
#pragma once
#include <vector>
#include "term.h"
namespace kiwi
{
class Expression
{
public:
Expression( double constant = 0.0 ) : m_constant( constant ) {}
Expression( const Term& term, double constant = 0.0 ) :
m_terms( 1, term ), m_constant( constant ) {}
Expression( const std::vector<Term>& terms, double constant = 0.0 ) :
m_terms( terms ), m_constant( constant ) {}
~Expression() {}
const std::vector<Term>& terms() const
{
return m_terms;
}
double constant() const
{
return m_constant;
}
double value() const
{
typedef std::vector<Term>::const_iterator iter_t;
double result = m_constant;
iter_t end = m_terms.end();
for( iter_t it = m_terms.begin(); it != end; ++it )
result += it->value();
return result;
}
private:
std::vector<Term> m_terms;
double m_constant;
};
} // namespace kiwi
|
