Double.cpp

/*
** libutil++
** $Id: Double.cpp 1702 2016-08-13 23:26:06Z sella $
** Copyright (c) 2011-2016 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 1702 2016-08-13 23:26:06Z sella $";

#include "Double.h"
#include "../util/CommonMacro.h"

using namespace sella::variant;

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

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() {
        if (this != &other) {
                if (!other.isNull()) {
                        if (isNull()) {
                                this->value = std::make_shared<double>(other.get());
                        } else {
                                *std::static_pointer_cast<double>(this->value) = *std::static_pointer_cast<double>(other.value);
                        }
                } else {
                        this->value.reset();
                }
        }
}

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) {
                if (!other.isNull()) {
                        if (isNull()) {
                                this->value = std::make_shared<double>(other.get());
                        } else {
                                *std::static_pointer_cast<double>(this->value) = *std::static_pointer_cast<double>(other.value);
                        }
                } else {
                        this->value.reset();
                }
        }

        return *this;
}

Double& Double::operator=(double other) throw () {
        if (isNull()) {
                this->value = std::make_shared<double>(other);
        } else {
                *std::static_pointer_cast<double>(this->value) = other;
        }

        return *this;
}

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

        return *this;
}

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

        return *this;
}

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

        return *this;
}

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

        return *this;
}

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

        return *this;
}

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

        return *this;
}

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

        return *this;
}

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

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

void Double::msgpack(sella::util::MessagePack &mpack, uint32_t &offset) const throw (TypeCastException) {
        uint32_t c;

        if (UNLIKELY(this->isNull())) {
                c = mpack.append(offset);
        } else {
                c = mpack.append(offset, *std::static_pointer_cast<double>(this->value));
        }

        offset += c;

        if (UNLIKELY(c == 0)) {
                THROW(TypeCastException, "Failed to append double '%s' at offset %d (buffer length: %d)", str(JSON).c_str(), offset, mpack.length());
        }
}

void Double::msgpackBufferSize(size_t &size) const throw () {
        if (UNLIKELY(isNull())) {
                size += 1;

                return;
        }

        size += 9;
}

std::string Double::str(int type) const throw () {
        if (this->isNull()) {
                return "null";
        }

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

bool Double::isType(const char *value, size_t size) throw () {
        bool dot = false;

        for (size_t i = (value[0] == '-') ? 1 : 0; i < size; i++) {
                if (!::isdigit(value[i]) != 0) {
                        if (dot == false && value[i] == '.') {
                                dot = true;
                        } else {
                                return false;
                        }
                }
        }

        return (size > 0 && ::isdigit(value[size - 1]));
}

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