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src/Undefined.cpp

00001 /*
00002  *   This file is part of the Standard Portable Library (SPL).
00003  *
00004  *   SPL is free software: you can redistribute it and/or modify
00005  *   it under the terms of the GNU General Public License as published by
00006  *   the Free Software Foundation, either version 3 of the License, or
00007  *   (at your option) any later version.
00008  *
00009  *   SPL is distributed in the hope that it will be useful,
00010  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  *   GNU General Public License for more details.
00013  *
00014  *   You should have received a copy of the GNU General Public License
00015  *   along with SPL.  If not, see <http://www.gnu.org/licenses/>.
00016  */
00017 #include <spl/Int32.h>
00018 #include <spl/Undefined.h>
00019 
00020 Undefined Undefined::m_instance;
00021 
00022 Undefined::Undefined()
00023 {
00024 }
00025 
00026 Undefined::~Undefined()
00027 {
00028 }
00029 
00030 bool Undefined::Equals( const IComparable *a ) const
00031 {
00032         return a->MajicNumber() == MajicNumber();
00033 }
00034 
00035 int Undefined::Compare( const IComparable *a ) const
00036 {
00037         return a->MajicNumber() == MajicNumber() ? 0 : -1;
00038 }
00039 
00040 bool Undefined::Equals( const IComparable& a ) const
00041 {
00042         return a.MajicNumber() == MajicNumber();
00043 }
00044 
00045 int Undefined::Compare( const IComparable& a ) const
00046 {
00047         return a.MajicNumber() == MajicNumber() ? 0 : -1;
00048 }
00049 
00050 int32 Undefined::MajicNumber() const
00051 {
00052         return UNDEFINED_MAJIC;
00053 }
00054 
00055 int32 Undefined::HashCode() const
00056 {
00057         return Int32::MaxValue();
00058 }