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 
27 class CodeElementUIntExpr : CodeElement {
28 
29 	uint val;
30 	TPointerExpr cx;
31 	int off;
32 
33 	internal CodeElementUIntExpr(uint val,
34 		TPointerExpr cx, int off) : base()
35 	{
36 		this.val = val;
37 		this.cx = cx;
38 		this.off = off;
39 	}
40 
41 	/* obsolete
42 	internal override int Length {
43 		get {
44 			return Encode7EUnsigned(val, null)
45 				+ (cx.GetMaxBitLength(off) + 6) / 7;
46 		}
47 	}
48 	*/
49 
50 	internal override int GetLength(bool oneByteCode)
51 	{
52 		int len = oneByteCode ? 1 : Encode7EUnsigned(val, null);
53 		return len + (cx.GetMaxBitLength(off) + 6) / 7;
54 	}
55 
56 	internal override int Encode(BlobWriter bw, bool oneByteCode)
57 	{
58 		int len1 = oneByteCode
59 			? EncodeOneByte(val, bw)
60 			: Encode7EUnsigned(val, bw);
61 		int len2 = (cx.GetMaxBitLength(off) + 6) / 7;
62 		bw.Append(String.Format("T0_INT{0}({1})",
63 			len2, cx.ToCExpr(off)));
64 		return len1 + len2;
65 	}
66 }
67