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 = 64;

        static const long long MAX_VALUE = (long long)0x7FFFFFFFFFFFFFFFLL;

        static const long long MIN_VALUE = (long long)0x8000000000000000LL;

    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_*/