Saf/Type/Limits.h

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/*
    This file is part of Simple Application Framework (Saf) library.
    Copyright (C) 2010 - 2012 Ondrej Danek <ondrej.danek@gmail.com>

    This library is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published 
    by the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Saf is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with Simple Application Framework library. If not, 
    see <http://www.gnu.org/licenses/>.
*/

#ifndef SAF_TYPE_LIMITS_H
#define SAF_TYPE_LIMITS_H

#include "../NotImplementedException.h"

namespace Saf
{
    namespace Type
    {
        template <class T>
        class Limits
        {
        public:
            static T Min()
            {
                throw NotImplementedException(SAF_SOURCE_LOCATION);
            }

            static T Max()
            {
                throw NotImplementedException(SAF_SOURCE_LOCATION);
            }

            static bool IsIntegral()
            {
                throw NotImplementedException(SAF_SOURCE_LOCATION);
            }

            static bool IsSigned()
            {
                throw NotImplementedException(SAF_SOURCE_LOCATION);
            }
        };

        template <>
        class Limits<Uint8>
        {
        public:
            static Uint8 Min()
            {
                return Uint8(0);
            }

            static Uint8 Max()
            {
                return Uint8(0xff);
            }

            static bool IsIntegral()
            {
                return true;
            }

            static bool IsSigned()
            {
                return false;
            }
        };

        template <>
        class Limits<Uint16>
        {
        public:
            static Uint16 Min()
            {
                return Uint16(0);
            }

            static Uint16 Max()
            {
                return Uint16(0xffff);
            }

            static bool IsIntegral()
            {
                return true;
            }

            static bool IsSigned()
            {
                return false;
            }
        };

        template <>
        class Limits<Uint32>
        {
        public:
            static Uint32 Min()
            {
                return Uint32(0);
            }

            static Uint32 Max()
            {
                return Uint32(0xffffffff);
            }

            static bool IsIntegral()
            {
                return true;
            }

            static bool IsSigned()
            {
                return false;
            }
        };

        template <>
        class Limits<Uint64>
        {
        public:
            static Uint64 Min()
            {
                return Uint64(0);
            }

            static Uint64 Max()
            {
                return Uint64(0xffffffffffffffff);
            }

            static bool IsIntegral()
            {
                return true;
            }

            static bool IsSigned()
            {
                return false;
            }
        };

        template <>
        class Limits<Int8>
        {
        public:
            static Int8 Min()
            {
                return Int8(-127) - 1;
            }

            static Int8 Max()
            {
                return Int8(127);
            }

            static bool IsIntegral()
            {
                return true;
            }

            static bool IsSigned()
            {
                return true;
            }
        };

        template <>
        class Limits<Int16>
        {
        public:
            static Int16 Min()
            {
                return Int16(-32767) - 1;
            }

            static Int16 Max()
            {
                return Int16(32767);
            }

            static bool IsIntegral()
            {
                return true;
            }

            static bool IsSigned()
            {
                return true;
            }
        };

        template <>
        class Limits<Int32>
        {
        public:
            static Int32 Min()
            {
                return Int32(-2147483647) - 1;
            }

            static Int32 Max()
            {
                return Int32(2147483647);
            }

            static bool IsIntegral()
            {
                return true;
            }

            static bool IsSigned()
            {
                return true;
            }
        };

        template <>
        class Limits<Int64>
        {
        public:
            static Int64 Min()
            {
                return Int64(-9223372036854775807) - 1;
            }

            static Int64 Max()
            {
                return Int64(9223372036854775807);
            }

            static bool IsIntegral()
            {
                return true;
            }

            static bool IsSigned()
            {
                return true;
            }
        };

        template <>
        class Limits<Float32>
        {
        public:
            static Float32 Min()
            {
                return -3.402823466e+38f;
            }

            static Float32 Max()
            {
                return 3.402823466e+38f;
            }

            static bool IsIntegral()
            {
                return false;
            }

            static bool IsSigned()
            {
                return true;
            }
        };

        template <>
        class Limits<Float64>
        {
        public:
            static Float64 Min()
            {
                return -1.7976931348623158e+308;
            }

            static Float64 Max()
            {
                return 1.7976931348623158e+308;
            }

            static bool IsIntegral()
            {
                return false;
            }

            static bool IsSigned()
            {
                return true;
            }
        };
        template <class T>
        class Limits<const T>
            : public Limits<T>
        {};

        template <class T>
        class Limits<volatile T>
            : public Limits<T>
        {};

        template <class T>
        class Limits<const volatile T>
            : public Limits<T>
        {};
    }
}

#endif