mcs/class/corlib/System.Reflection.Emit/UnmanagedMarshal.cs

   1
   2 //
   3 // System.Reflection.Emit/UnmanagedMarshal.cs
   4 //
   5 // Author:
   6 //   Paolo Molaro (lupus@ximian.com)
   7 //
   8 // (C) 2001-2002 Ximian, Inc.  http://www.ximian.com
   9 //
  10
  11 using System.Reflection.Emit;
  12 using System.Runtime.InteropServices;
  13 using System;
  14
  15 namespace System.Reflection.Emit {
  16
  17         [Serializable]
  18         public sealed class UnmanagedMarshal {
  19                 private int count;
  20                 private UnmanagedType t;
  21                 private UnmanagedType tbase;
  22
  23                 private UnmanagedMarshal (UnmanagedType maint, int cnt) {
  24                         count = cnt;
  25                         t = maint;
  26                         tbase = maint;
  27                 }
  28                 private UnmanagedMarshal (UnmanagedType maint, UnmanagedType elemt) {
  29                         count = 0;
  30                         t = maint;
  31                         tbase = elemt;
  32                 }
  33
  34                 public UnmanagedType BaseType {
  35                         get {
  36                                 if (t == UnmanagedType.LPArray || t == UnmanagedType.SafeArray)
  37                                         throw new ArgumentException ();
  38                                 return tbase;
  39                         }
  40                 }
  41
  42                 public int ElementCount {
  43                         get {return count;}
  44                 }
  45
  46                 public UnmanagedType GetUnmanagedType {
  47                         get {return t;}
  48                 }
  49
  50                 public Guid IIDGuid {
  51                         get {return Guid.Empty;}
  52                 }
  53
  54                 public static UnmanagedMarshal DefineByValArray( int elemCount) {
  55                         return new UnmanagedMarshal (UnmanagedType.ByValArray, elemCount);
  56                 }
  57
  58                 public static UnmanagedMarshal DefineByValTStr( int elemCount) {
  59                         return new UnmanagedMarshal (UnmanagedType.ByValTStr, elemCount);
  60                 }
  61
  62                 public static UnmanagedMarshal DefineLPArray( UnmanagedType elemType) {
  63                         return new UnmanagedMarshal (UnmanagedType.LPArray, elemType);
  64                 }
  65
  66                 public static UnmanagedMarshal DefineSafeArray( UnmanagedType elemType) {
  67                         return new UnmanagedMarshal (UnmanagedType.SafeArray, elemType);
  68                 }
  69
  70                 public static UnmanagedMarshal DefineUnmanagedMarshal( UnmanagedType unmanagedType) {
  71                         return new UnmanagedMarshal (unmanagedType, unmanagedType);
  72                 }
  73
  74         }
  75 }