/symbols/pdb/Microsoft.Cci.Pdb/PdbConstant.cs

 1// Copyright (c) Microsoft. All rights reserved.
 2// Licensed under the MIT license. See LICENSE file in the project root for full license information.
 3
 4using System;
 5using System.Runtime.InteropServices;
 6
 7namespace Microsoft.Cci.Pdb {
 8  /// <summary />
 9  internal class PdbConstant {
10    internal string name;
11    internal uint token;
12    internal object value;
13
14    internal PdbConstant(string name, uint token, object value) {
15      this.name = name;
16      this.token = token;
17      this.value = value;
18    }
19
20    internal PdbConstant(BitAccess bits) {
21      bits.ReadUInt32(out this.token);
22      byte tag1;
23      bits.ReadUInt8(out tag1);
24      byte tag2;
25      bits.ReadUInt8(out tag2);
26      if (tag2 == 0) {
27        this.value = tag1;
28      } else if (tag2 == 0x80) {
29        switch (tag1) {
30          case 0x00: //sbyte
31            sbyte sb;
32            bits.ReadInt8(out sb);
33            this.value = sb;
34            break;
35          case 0x01: //short
36            short s;
37            bits.ReadInt16(out s);
38            this.value = s;
39            break;
40          case 0x02: //ushort
41            ushort us;
42            bits.ReadUInt16(out us);
43            this.value = us;
44            break;
45          case 0x03: //int
46            int i;
47            bits.ReadInt32(out i);
48            this.value = i;
49            break;
50          case 0x04: //uint
51            uint ui;
52            bits.ReadUInt32(out ui);
53            this.value = ui;
54            break;
55          case 0x05: //float
56            this.value = bits.ReadFloat();
57            break;
58          case 0x06: //double
59            this.value = bits.ReadDouble();
60            break;
61          case 0x09: //long
62            long sl;
63            bits.ReadInt64(out sl);
64            this.value = sl;
65            break;
66          case 0x0a: //ulong
67            ulong ul;
68            bits.ReadUInt64(out ul);
69            this.value = ul;
70            break;
71          case 0x10: //string
72            string str;
73            bits.ReadBString(out str);
74            this.value = str;
75            break;
76          case 0x19: //decimal
77            this.value = bits.ReadDecimal();
78            break;
79          default:
80            //TODO: error
81            break; 
82        }
83      } else {
84        //TODO: error
85      }
86      bits.ReadCString(out name);
87    }
88  }
89}