1*0957b409SSimon J. Gerraty /* 2*0957b409SSimon J. Gerraty * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org> 3*0957b409SSimon J. Gerraty * 4*0957b409SSimon J. Gerraty * Permission is hereby granted, free of charge, to any person obtaining 5*0957b409SSimon J. Gerraty * a copy of this software and associated documentation files (the 6*0957b409SSimon J. Gerraty * "Software"), to deal in the Software without restriction, including 7*0957b409SSimon J. Gerraty * without limitation the rights to use, copy, modify, merge, publish, 8*0957b409SSimon J. Gerraty * distribute, sublicense, and/or sell copies of the Software, and to 9*0957b409SSimon J. Gerraty * permit persons to whom the Software is furnished to do so, subject to 10*0957b409SSimon J. Gerraty * the following conditions: 11*0957b409SSimon J. Gerraty * 12*0957b409SSimon J. Gerraty * The above copyright notice and this permission notice shall be 13*0957b409SSimon J. Gerraty * included in all copies or substantial portions of the Software. 14*0957b409SSimon J. Gerraty * 15*0957b409SSimon J. Gerraty * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16*0957b409SSimon J. Gerraty * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17*0957b409SSimon J. Gerraty * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 18*0957b409SSimon J. Gerraty * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 19*0957b409SSimon J. Gerraty * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 20*0957b409SSimon J. Gerraty * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 21*0957b409SSimon J. Gerraty * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22*0957b409SSimon J. Gerraty * SOFTWARE. 23*0957b409SSimon J. Gerraty */ 24*0957b409SSimon J. Gerraty 25*0957b409SSimon J. Gerraty using System; 26*0957b409SSimon J. Gerraty using System.Collections.Generic; 27*0957b409SSimon J. Gerraty 28*0957b409SSimon J. Gerraty class TPointerNull : TPointerBase { 29*0957b409SSimon J. Gerraty ToBool(TValue vp)30*0957b409SSimon J. Gerraty internal override bool ToBool(TValue vp) 31*0957b409SSimon J. Gerraty { 32*0957b409SSimon J. Gerraty return false; 33*0957b409SSimon J. Gerraty } 34*0957b409SSimon J. Gerraty ToString(TValue vp)35*0957b409SSimon J. Gerraty internal override string ToString(TValue vp) 36*0957b409SSimon J. Gerraty { 37*0957b409SSimon J. Gerraty return "null"; 38*0957b409SSimon J. Gerraty } 39*0957b409SSimon J. Gerraty Equals(TPointerBase tp)40*0957b409SSimon J. Gerraty internal override bool Equals(TPointerBase tp) 41*0957b409SSimon J. Gerraty { 42*0957b409SSimon J. Gerraty return tp is TPointerNull; 43*0957b409SSimon J. Gerraty } 44*0957b409SSimon J. Gerraty } 45