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  }