Boolean.cpp

/*
** libutil++
** $Id: Boolean.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: Boolean.cpp 1702 2016-08-13 23:26:06Z sella $";

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

#include <ctype.h>

using namespace sella::variant;

Boolean::Boolean() throw () : Nullable(std::make_shared<bool>(false)) { }

Boolean::Boolean(const std::string &value) throw (TypeCastException) : Nullable() {
        if (LIKELY(boost::regex_match(value, Boolean::Pattern()))) {
                this->value = std::make_shared<bool>(tolower(value[0]) == 't');
        } else {
                THROW(TypeCastException, "unable to cast '%s' to a boolean value", value.c_str());
        }
}

Boolean::Boolean(bool value) throw () : Nullable(std::make_shared<bool>(value)) { }

Boolean::Boolean(const Boolean &other) throw () : Nullable() {
        if (LIKELY(this != &other)) {
                if (LIKELY(!other.isNull())) {
                        if (UNLIKELY(isNull())) {
                                this->value = std::make_shared<bool>(other.get());
                        } else {
                                *std::static_pointer_cast<bool>(this->value) = *std::static_pointer_cast<bool>(other.value);
                        }
                } else {
                        this->value.reset();
                }
        }
}

Boolean::~Boolean() throw () { }

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

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

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

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

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

Boolean& Boolean::operator=(const Boolean &other) throw () {
        if (LIKELY(this != &other)) {
                if (LIKELY(!other.isNull())) {
                        if (UNLIKELY(isNull())) {
                                this->value = std::make_shared<bool>(other.get());
                        } else {
                                *std::static_pointer_cast<bool>(this->value) = *std::static_pointer_cast<bool>(other.value);
                        }
                } else {
                        this->value.reset();
                }
        }

        return *this;
}

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

        return *this;
}

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

        return *this;
}

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

        return *this;
}

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

        return *this;
}

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

        return *this;
}

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

        return *this;
}

Boolean& Boolean::operator%=(bool value) throw () {
        (*std::static_pointer_cast<bool>(this->value)) %= value;

        return *this;
}

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

        return *this;
}

Boolean& Boolean::operator|=(bool value) throw () {
        (*std::static_pointer_cast<bool>(this->value)) |= value;

        return *this;
}

Boolean& Boolean::operator<<=(int bits) throw () {
        (*std::static_pointer_cast<bool>(this->value)) <<= bits;

        return *this;
}

Boolean& Boolean::operator>>=(int bits) throw () {
        (*std::static_pointer_cast<bool>(this->value)) >>= bits;

        return *this;
}

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

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

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

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

        offset += c;

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

void Boolean::msgpackBufferSize(size_t &size) const throw () {
        size += 1;
}

std::string Boolean::str(int type) const throw () {
        if (UNLIKELY(isNull())) {
                return "null";
        }

        if (get()) {
                return std::string("true");
        }

        return std::string("false");
}

bool Boolean::isType(const char *value, size_t size) throw () {
        if (size == 4) {
                return ((value[0] == 't' || value[0] == 'T') && (value[1] == 'r' || value[1] == 'R') && (value[2] == 'u' || value[2] == 'U') && (value[3] == 'e' || value[3] == 'E'));
        } else if (size == 5) {
                return ((value[0] == 'f' || value[0] == 'F') && (value[1] == 'a' || value[1] == 'A') && (value[2] == 'l' || value[2] == 'L') && (value[3] == 's' || value[3] == 'S') && (value[4] == 'e' || value[4] == 'E'));
        }

        return false;
}

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