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

   1
   2 //
   3 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
   4 //
   5 // Permission is hereby granted, free of charge, to any person obtaining
   6 // a copy of this software and associated documentation files (the
   7 // "Software"), to deal in the Software without restriction, including
   8 // without limitation the rights to use, copy, modify, merge, publish,
   9 // distribute, sublicense, and/or sell copies of the Software, and to
  10 // permit persons to whom the Software is furnished to do so, subject to
  11 // the following conditions:
  12 //
  13 // The above copyright notice and this permission notice shall be
  14 // included in all copies or substantial portions of the Software.
  15 //
  16 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  20 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  21 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  22 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23 //
  24
  25
  26 //
  27 // System.Reflection.Emit/ParameterBuilder.cs
  28 //
  29 // Author:
  30 //   Paolo Molaro (lupus@ximian.com)
  31 //
  32 // (C) 2001 Ximian, Inc.  http://www.ximian.com
  33 //
  34
  35 using System;
  36 using System.Reflection;
  37 using System.Reflection.Emit;
  38 using System.Globalization;
  39 using System.Runtime.CompilerServices;
  40 using System.Runtime.InteropServices;
  41
  42 namespace System.Reflection.Emit {
  43         public class ParameterBuilder {
  44                 private MethodBase methodb; /* MethodBuilder or ConstructorBuilder */
  45                 private string name;
  46                 private CustomAttributeBuilder[] cattrs;
  47                 private UnmanagedMarshal marshal_info;
  48                 private ParameterAttributes attrs;
  49                 private int position;
  50                 private int table_idx;
  51                 object def_value;
  52
  53                 internal ParameterBuilder (MethodBase mb, int pos, ParameterAttributes attributes, string strParamName) {
  54                         name = strParamName;
  55                         position = pos;
  56                         attrs = attributes;
  57                         methodb = mb;
  58                         table_idx = mb.get_next_table_index (this, 0x08, true);
  59                 }
  60
  61                 public virtual int Attributes {
  62                         get {return (int)attrs;}
  63                 }
  64                 public bool IsIn {
  65                         get {return ((int)attrs & (int)ParameterAttributes.In) != 0;}
  66                 }
  67                 public bool IsOut {
  68                         get {return ((int)attrs & (int)ParameterAttributes.Out) != 0;}
  69                 }
  70                 public bool IsOptional {
  71                         get {return ((int)attrs & (int)ParameterAttributes.Optional) != 0;}
  72                 }
  73                 public virtual string Name {
  74                         get {return name;}
  75                 }
  76                 public virtual int Position {
  77                         get {return position;}
  78                 }
  79
  80                 public virtual ParameterToken GetToken() {
  81                         return new ParameterToken (0x08 | table_idx);
  82                 }
  83
  84                 public virtual void SetConstant (object defaultValue)
  85                 {
  86                         def_value = defaultValue;
  87                         attrs |= ParameterAttributes.HasDefault;
  88                 }
  89
  90                 public void SetCustomAttribute( CustomAttributeBuilder customBuilder) {
  91                         string attrname = customBuilder.Ctor.ReflectedType.FullName;
  92                         if (attrname == "System.Runtime.InteropServices.InAttribute") {
  93                                 attrs |= ParameterAttributes.In;
  94                                 return;
  95                         } else if (attrname == "System.Runtime.InteropServices.OutAttribute") {
  96                                 attrs |= ParameterAttributes.Out;
  97                                 return;
  98                         } else if (attrname == "System.Runtime.InteropServices.OptionalAttribute") {
  99                                 attrs |= ParameterAttributes.Optional;
 100                                 return;
 101                         } else if (attrname == "System.Runtime.InteropServices.MarshalAsAttribute") {
 102                                 marshal_info = CustomAttributeBuilder.get_umarshal (customBuilder, true);
 103                                 /* FIXME: check for errors */
 104                                 return;
 105                         }
 106                         if (cattrs != null) {
 107                                 CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
 108                                 cattrs.CopyTo (new_array, 0);
 109                                 new_array [cattrs.Length] = customBuilder;
 110                                 cattrs = new_array;
 111                         } else {
 112                                 cattrs = new CustomAttributeBuilder [1];
 113                                 cattrs [0] = customBuilder;
 114                         }
 115                 }
 116                 public void SetCustomAttribute( ConstructorInfo con, byte[] binaryAttribute) {
 117                         SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
 118                 }
 119
 120                 public virtual void SetMarshal( UnmanagedMarshal unmanagedMarshal) {
 121                         marshal_info = unmanagedMarshal;
 122                         attrs |= ParameterAttributes.HasFieldMarshal;
 123                 }
 124
 125         }
 126 }
 127