src/main/decaf/lang/Long.h

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef _DECAF_LANG_LONG_H_
#define _DECAF_LANG_LONG_H_

#include <decaf/lang/Number.h>
#include <decaf/lang/Comparable.h>
#include <decaf/lang/exceptions/NumberFormatException.h>
#include <string>

namespace decaf{
namespace lang{

    class DECAF_API Long : public Number,
                           public Comparable<Long>,
                           public Comparable<long long> {
    private:

        // The primitive long long value
        long long value;

    public:

        static const int SIZE;

        static const long long MAX_VALUE;

        static const long long MIN_VALUE;

    public:

        Long(long long value);

        Long(const std::string& value);

        virtual ~Long() {
        }

        virtual int compareTo(const Long& l) const;

        bool equals(const Long& l) const {
            return this->value == l.value;
        }

        virtual bool operator==(const Long& l) const {
            return this->value == l.value;
        }

        virtual bool operator<(const Long& l) const {
            return this->value < l.value;
        }

        virtual int compareTo(const long long& l) const;

        bool equals(const long long& l) const {
            return this->value == l;
        }

        virtual bool operator==(const long long& l) const {
            return this->value == l;
        }

        virtual bool operator<(const long long& l) const {
            return this->value < l;
        }

        std::string toString() const;

        virtual double doubleValue() const {
            return (double) this->value;
        }

        virtual float floatValue() const {
            return (float) this->value;
        }

        virtual unsigned char byteValue() const {
            return (unsigned char) this->value;
        }

        virtual short shortValue() const {
            return (short) this->value;
        }

        virtual int intValue() const {
            return (int) this->value;
        }

        virtual long long longValue() const {
            return this->value;
        }

    public:

        static int bitCount(long long value);

        static Long decode(const std::string& value);

        static long long highestOneBit(long long value);

        static long long lowestOneBit(long long value);

        static int numberOfLeadingZeros(long long value);

        static int numberOfTrailingZeros(long long value);

        static long long parseLong(const std::string& value);

        static long long parseLong(const std::string& value, int radix);

        static long long reverseBytes(long long value);

        static long long reverse(long long value);

        static long long rotateLeft(long long value, int distance);

        static long long rotateRight(long long value, int distance);

        static int signum(long long value);

        static std::string toString(long long value);

        /*
         * Returns a string representation of the first argument in the radix
         * specified by the second argument.
         *
         * If the radix is smaller than Character.MIN_RADIX or larger than
         * Character.MAX_RADIX, then the radix 10 is used instead.
         *
         * If the first argument is negative, the first element of the result is
         * the ASCII minus character '-'. If the first argument is not
         * negative, no sign character appears in the result.
         *
         * The remaining characters of the result represent the magnitude of the
         * first argument. If the magnitude is zero, it is represented by a single
         *  zero character '0'; otherwise, the first character of the
         * representation of the magnitude will not be the zero character. The
         * following ASCII characters are used as digits:
         *
         *    0123456789abcdefghijklmnopqrstuvwxyz
         *
         * @param value - the long long to convert to a string
         * @param radix - the radix to format the string in
         * @returns an long long formatted to the string value of the radix given.
         */
        static std::string toString(long long value, int radix);

        static std::string toHexString(long long value);

        static std::string toOctalString(long long value);

        static std::string toBinaryString(long long value);

        static Long valueOf(long long value) {
            return Long(value);
        }

        static Long valueOf(const std::string& value);

        static Long valueOf(const std::string& value, int radix);

    private:

        static long long parse(const std::string& value, int offset, int radix, bool negative);

    };

}}

#endif /*_DECAF_LANG_LONG_H_*/

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