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 TPointerXT : TPointerBase { 29 30 internal string Name { 31 get; private set; 32 } 33 34 internal Word Target { 35 get; private set; 36 } 37 38 internal TPointerXT(string name) 39 { 40 this.Name = name; 41 this.Target = null; 42 } 43 44 internal TPointerXT(Word target) 45 { 46 this.Name = target.Name; 47 this.Target = target; 48 } 49 50 internal void Resolve(T0Comp ctx) 51 { 52 if (Target == null) { 53 Target = ctx.Lookup(Name); 54 } 55 } 56 57 internal override void Execute(T0Comp ctx, CPU cpu) 58 { 59 Resolve(ctx); 60 Target.Run(cpu); 61 } 62 63 internal override string ToString(TValue vp) 64 { 65 return String.Format("<'{0}>", Name); 66 } 67 68 internal override bool Equals(TPointerBase tp) 69 { 70 TPointerXT tx = tp as TPointerXT; 71 return tx != null && Name == tx.Name; 72 } 73 } 74