1 /* 2 * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org> 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining 5 * a copy of this software and associated documentation files (the 6 * "Software"), to deal in the Software without restriction, including 7 * without limitation the rights to use, copy, modify, merge, publish, 8 * distribute, sublicense, and/or sell copies of the Software, and to 9 * permit persons to whom the Software is furnished to do so, subject to 10 * the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be 13 * included in all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24 25 using System; 26 using System.Collections.Generic; 27 28 class OpcodeJumpIfNot : OpcodeJump { 29 30 internal OpcodeJumpIfNot() : base() 31 { 32 } 33 34 internal OpcodeJumpIfNot(int disp) : base(disp) 35 { 36 } 37 38 internal override void Run(CPU cpu) 39 { 40 TValue v = cpu.Pop(); 41 if (!v.Bool) { 42 base.Run(cpu); 43 } 44 } 45 46 internal override int StackAction { 47 get { 48 return -1; 49 } 50 } 51 52 internal override CodeElement ToCodeElement() 53 { 54 return new CodeElementJump(6); 55 } 56 57 public override string ToString() 58 { 59 if (JumpDisp == Int32.MinValue) { 60 return "jumpifnot UNRESOLVED"; 61 } else { 62 return "jumpifnot disp=" + JumpDisp; 63 } 64 } 65 } 66