IntegerValue.cpp

00001 /*
00002  * IntegerValue.cpp
00003  *
00004  * Created on: Nov 1, 2013
00005  * * Authors: Vincent Wochnik <v.wochnik@gmail.com>
00006  *
00007  * Copyright (c) 2013 Cumulocity GmbH
00008  *
00009  * Permission is hereby granted, free of charge, to any person obtaining
00010  * a copy of this software and associated documentation files (the
00011  * "Software"), to deal in the Software without restriction, including
00012  * without limitation the rights to use, copy, modify, merge, publish,
00013  * distribute, sublicense, and/or sell copies of the Software, and to
00014  * permit persons to whom the Software is furnished to do so, subject to
00015  * the following conditions:
00016  *
00017  * The above copyright notice and this permission notice shall be
00018  * included in all copies or substantial portions of the Software.
00019  *
00020  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00021  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00022  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00023  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00024  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00025  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00026  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00027  */
00028 
00029 #include "IntegerValue.h"
00030 
00031 IntegerValue::IntegerValue(long number)
00032 {
00033     _negative = (number < 0L);
00034     if (_negative)
00035         _number = -number;
00036     else
00037         _number = number;
00038 }
00039 
00040 uint8_t IntegerValue::valueType() const
00041 {
00042     return VALUE_INTEGER;
00043 }
00044 
00045 long IntegerValue::integerValue() const
00046 {
00047     return (_negative) ? -_number : _number;
00048 }
00049 
00050 double IntegerValue::floatValue() const
00051 {
00052     return 0.0;
00053 }
00054 
00055 const char * IntegerValue::characterValue() const
00056 {
00057     return 0;
00058 }
00059 
00060 size_t IntegerValue::write(AbstractDataSink& sink) const
00061 {
00062     size_t n = 0;
00063     if (_negative)
00064         n += sink.write('-');
00065     n += sink.write(_number);
00066     return n;
00067 }
00068 
00069 size_t IntegerValue::length() const
00070 {
00071     size_t l = 0;
00072 
00073     if (_negative)
00074         l++;
00075 
00076     unsigned long n = _number;
00077 
00078     do {
00079         n /= 10;
00080         l++;
00081     } while(n);
00082     return l;
00083 }
00084 
00085 Value* IntegerValue::copy() const
00086 {
00087     long number;
00088 
00089     number = (_negative) ? -_number : _number;
00090     return new IntegerValue(number);
00091 }
00092