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

   1
   2
   3 //
   4 // System.Reflection.Emit/ParameterBuilder.cs
   5 //
   6 // Author:
   7 //   Paolo Molaro (lupus@ximian.com)
   8 //
   9 // (C) 2001 Ximian, Inc.  http://www.ximian.com
  10 //
  11
  12 using System;
  13 using System.Reflection;
  14 using System.Reflection.Emit;
  15 using System.Globalization;
  16 using System.Runtime.CompilerServices;
  17 using System.Runtime.InteropServices;
  18
  19 namespace System.Reflection.Emit {
  20         public class ParameterBuilder {
  21                 private MethodBase methodb; /* MethodBuilder or ConstructorBuilder */
  22                 private string name;
  23                 private CustomAttributeBuilder[] cattrs;
  24                 private UnmanagedMarshal marshal_info;
  25                 private ParameterAttributes attrs;
  26                 private int position;
  27                 private int table_idx;
  28
  29                 internal ParameterBuilder (MethodBase mb, int pos, ParameterAttributes attributes, string strParamName) {
  30                         name = strParamName;
  31                         position = pos;
  32                         attrs = attributes;
  33                         methodb = mb;
  34                         table_idx = mb.get_next_table_index (this, 0x08, true);
  35                 }
  36
  37                 public virtual int Attributes {
  38                         get {return (int)attrs;}
  39                 }
  40                 public bool IsIn {
  41                         get {return ((int)attrs & (int)ParameterAttributes.In) != 0;}
  42                 }
  43                 public bool IsOut {
  44                         get {return ((int)attrs & (int)ParameterAttributes.Out) != 0;}
  45                 }
  46                 public bool IsOptional {
  47                         get {return ((int)attrs & (int)ParameterAttributes.Optional) != 0;}
  48                 }
  49                 public virtual string Name {
  50                         get {return name;}
  51                 }
  52                 public virtual int Position {
  53                         get {return position;}
  54                 }
  55
  56                 public virtual ParameterToken GetToken() {
  57                         return new ParameterToken (0x08 | table_idx);
  58                 }
  59
  60                 [MonoTODO]
  61                 public virtual void SetConstant( object defaultValue) {
  62                         /* FIXME */
  63                 }
  64
  65                 public void SetCustomAttribute( CustomAttributeBuilder customBuilder) {
  66                         string attrname = customBuilder.Ctor.ReflectedType.FullName;
  67                         if (attrname == "System.Runtime.InteropServices.InAttribute") {
  68                                 attrs |= ParameterAttributes.In;
  69                                 return;
  70                         } else if (attrname == "System.Runtime.InteropServices.OutAttribute") {
  71                                 attrs |= ParameterAttributes.Out;
  72                                 return;
  73                         } else if (attrname == "System.Runtime.InteropServices.OptionalAttribute") {
  74                                 attrs |= ParameterAttributes.Optional;
  75                                 return;
  76                         } else if (attrname == "System.Runtime.InteropServices.MarshalAsAttribute") {
  77                                 marshal_info = CustomAttributeBuilder.get_umarshal (customBuilder, true);
  78                                 /* FIXME: check for errors */
  79                                 return;
  80                         }
  81                         if (cattrs != null) {
  82                                 CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
  83                                 cattrs.CopyTo (new_array, 0);
  84                                 new_array [cattrs.Length] = customBuilder;
  85                                 cattrs = new_array;
  86                         } else {
  87                                 cattrs = new CustomAttributeBuilder [1];
  88                                 cattrs [0] = customBuilder;
  89                         }
  90                 }
  91                 public void SetCustomAttribute( ConstructorInfo con, byte[] binaryAttribute) {
  92                         SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
  93                 }
  94
  95                 public virtual void SetMarshal( UnmanagedMarshal unmanagedMarshal) {
  96                         marshal_info = unmanagedMarshal;
  97                         attrs |= ParameterAttributes.HasFieldMarshal;
  98                 }
  99
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 103
 104         }
 105 }
 106