/builddir/build/BUILD/libutil++-1.4.0/src/sella/variant/Double.cpp

/*
** libutil++
** $Id: Double.cpp 1197 2014-10-14 22:26:11Z sella $
** Copyright (c) 2011-2014 Digital Genesis, LLC. All Rights Reserved.
** Released under the LGPL Version 2.1 License.
** http://www.digitalgenesis.com
*/

static const char rcsid[] __attribute__((used)) = "$Id: Double.cpp 1197 2014-10-14 22:26:11Z sella $";

#include "Double.h"

using namespace sella::variant;

const boost::regex Double::Pattern("^-?[0-9]*\\.[0-9]+$");

Double::Double() throw () : Nullable() { }

Double::Double(const std::string &value) throw (TypeCastException) : Nullable() {
        try {
                this->value = std::make_shared<double>(std::stod(value));
        } catch (std::invalid_argument &e) {
                THROW(TypeCastException, "unable to cast from string to a decimal value (invalid string)");
        } catch (std::out_of_range &e) {
                THROW(TypeCastException, "unable to cast from string to a decimal value (overflow/underflow)");
        }
}

Double::Double(double value) throw () : Nullable(std::make_shared<double>(value)) { }

Double::Double(const Double &other) throw () : Nullable(other) {
        if (!other.isNull()) {
                this->value = std::make_shared<double>(*other.getDouble());
        }
}

Double::~Double() throw () { }

bool Double::operator==(const Double &other) const throw () {
        return (*std::static_pointer_cast<double>(this->value) == *std::static_pointer_cast<double>(other.value));
}

bool Double::operator!=(const Double &other) const throw () {
        return !(*this == other);
}

bool Double::operator>(const Double &other) const throw () {
        return (*std::static_pointer_cast<double>(this->value) > *std::static_pointer_cast<double>(other.value));
}

bool Double::operator<(const Double &other) const throw () {
        return (*std::static_pointer_cast<double>(this->value) < *std::static_pointer_cast<double>(other.value));
}

bool Double::operator!() throw () {
        return !(*std::static_pointer_cast<double>(this->value));
}

Double& Double::operator=(const Double &other) throw () {
        if (this != &other) {
                Nullable::operator=(other);
                if (!other.isNull()) {
                        this->value = std::make_shared<double>(*other.getDouble());
                }
        }

        return *this;
}

Double& Double::operator++() throw () {
        cache.clear();
        ++(*std::static_pointer_cast<double>(this->value));

        return *this;
}

Double& Double::operator--() throw () {
        cache.clear();
        --(*std::static_pointer_cast<double>(this->value));

        return *this;
}

Double& Double::operator+=(double value) throw () {
        cache.clear();
        (*std::static_pointer_cast<double>(this->value)) += value;

        return *this;
}

Double& Double::operator-=(double value) throw () {
        cache.clear();
        (*std::static_pointer_cast<double>(this->value)) -= value;

        return *this;
}

Double& Double::operator*=(double value) throw () {
        cache.clear();
        (*std::static_pointer_cast<double>(this->value)) *= value;

        return *this;
}

Double& Double::operator/=(double value) throw () {
        cache.clear();
        (*std::static_pointer_cast<double>(this->value)) /= value;

        return *this;
}

Double& Double::operator^=(double value) throw () {
        cache.clear();
        (*std::static_pointer_cast<double>(this->value)) = pow((*std::static_pointer_cast<double>(this->value)), value);

        return *this;
}

const double* Double::getDouble() const throw (UnsupportedOperatorException) {
        if (isNull()) {
                THROW(UnsupportedOperatorException, "unable to take reference of null value");
        }

        return &(*std::static_pointer_cast<double>(this->value));
}

const std::string& Double::str() const throw () {
        if (cache.empty()) {
                if (this->isNull()) {
                        cache = "null";
                } else { 
                        char    buffer[4096];

                        snprintf(buffer, sizeof(buffer), "%lf", *(this->getDouble()));
                        cache = buffer;
                }
        }

        return cache;
}

/*
** vim: noet ts=3 sw=3
*/

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