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