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

   1 //
   2 // System.Reflection.Emit/ConstructorBuilder.cs
   3 //
   4 // Author:
   5 //   Paolo Molaro (lupus@ximian.com)
   6 //
   7 // (C) 2001 Ximian, Inc.  http://www.ximian.com
   8 //
   9
  10 using System;
  11 using System.Reflection;
  12 using System.Reflection.Emit;
  13 using System.Globalization;
  14 using System.Security;
  15 using System.Security.Permissions;
  16 using System.Runtime.InteropServices;
  17
  18 namespace System.Reflection.Emit {
  19
  20         public sealed class ConstructorBuilder : ConstructorInfo {
  21                 private RuntimeMethodHandle mhandle;
  22                 private ILGenerator ilgen;
  23                 private Type[] parameters;
  24                 private MethodAttributes attrs;
  25                 private MethodImplAttributes iattrs;
  26                 private int table_idx;
  27                 private CallingConventions call_conv;
  28                 private TypeBuilder type;
  29                 private ParameterBuilder[] pinfo;
  30                 private CustomAttributeBuilder[] cattrs;
  31                 private bool init_locals = true;
  32
  33                 internal ConstructorBuilder (TypeBuilder tb, MethodAttributes attributes, CallingConventions callingConvention, Type[] parameterTypes) {
  34                         attrs = attributes | MethodAttributes.SpecialName;
  35                         call_conv = callingConvention;
  36                         if (parameterTypes != null) {
  37                                 this.parameters = new Type [parameterTypes.Length];
  38                                 System.Array.Copy (parameterTypes, this.parameters, parameterTypes.Length);
  39                         }
  40                         type = tb;
  41                         table_idx = get_next_table_index (this, 0x06, true);
  42                 }
  43
  44                 public bool InitLocals {
  45                         get {return init_locals;}
  46                         set {init_locals = value;}
  47                 }
  48
  49                 internal TypeBuilder TypeBuilder {
  50                         get {return type;}
  51                 }
  52
  53                 public override MethodImplAttributes GetMethodImplementationFlags() {
  54                         return iattrs;
  55                 }
  56                 public override ParameterInfo[] GetParameters() {
  57                         if (parameters == null)
  58                                 return null;
  59
  60                         ParameterInfo[] retval = new ParameterInfo [parameters.Length];
  61                         for (int i = 0; i < parameters.Length; i++) {
  62                                 retval [i] = new ParameterInfo (pinfo == null ? null : pinfo [i+1], parameters [i], this, i + 1);
  63                         }
  64
  65                         return retval;
  66                 }
  67                 public override Object Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) {
  68                         throw not_supported ();
  69                 }
  70                 public override object Invoke(BindingFlags invokeAttr, Binder binder, object[] parameters, CultureInfo culture) {
  71                         throw not_supported ();
  72                 }
  73
  74                 public override RuntimeMethodHandle MethodHandle {
  75                         get {
  76                                 throw not_supported ();
  77                         }
  78                 }
  79
  80                 public override MethodAttributes Attributes {
  81                         get {return attrs;}
  82                 }
  83                 public override Type ReflectedType { get {return type;}}
  84                 public override Type DeclaringType { get {return type;}}
  85                 public Type ReturnType { get {return null;}}
  86                 public override string Name {
  87                         get {return (attrs & MethodAttributes.Static) != 0 ? ".cctor" : ".ctor";}
  88                 }
  89                 public string Signature {
  90                         get {return "constructor signature";}
  91                 }
  92
  93                 public void AddDeclarativeSecurity( SecurityAction action, PermissionSet pset) {
  94                 }
  95
  96                 public ParameterBuilder DefineParameter(int iSequence, ParameterAttributes attributes, string strParamName)
  97                 {
  98                         if ((iSequence < 1) || (iSequence > parameters.Length))
  99                                 throw new ArgumentOutOfRangeException ("iSequence");
 100                         if (type.is_created)
 101                                 throw not_after_created ();
 102
 103                         ParameterBuilder pb = new ParameterBuilder (this, iSequence, attributes, strParamName);
 104                         if (pinfo == null)
 105                                 pinfo = new ParameterBuilder [parameters.Length + 1];
 106                         pinfo [iSequence] = pb;
 107                         return pb;
 108                 }
 109
 110                 public override bool IsDefined (Type attribute_type, bool inherit) {
 111                         throw not_supported ();
 112                 }
 113
 114                 public override object [] GetCustomAttributes (bool inherit) {
 115                         throw not_supported ();
 116                 }
 117
 118                 public override object [] GetCustomAttributes (Type attribute_type, bool inherit) {
 119                         throw not_supported ();
 120                 }
 121
 122                 public ILGenerator GetILGenerator () {
 123                         return GetILGenerator (64);
 124                 }
 125                 internal ILGenerator GetILGenerator (int size) {
 126                         ilgen = new ILGenerator (this, size);
 127                         return ilgen;
 128                 }
 129
 130                 public void SetCustomAttribute( CustomAttributeBuilder customBuilder) {
 131                         if (customBuilder == null)
 132                                 throw new ArgumentNullException ("customBuilder");
 133
 134                         string attrname = customBuilder.Ctor.ReflectedType.FullName;
 135                         if (attrname == "System.Runtime.CompilerServices.MethodImplAttribute") {
 136                                 byte[] data = customBuilder.Data;
 137                                 int impla; // the (stupid) ctor takes a short or an int ...
 138                                 impla = (int)data [2];
 139                                 impla |= ((int)data [3]) << 8;
 140                                 SetImplementationFlags ((MethodImplAttributes)impla);
 141                                 return;
 142                         }
 143                         if (cattrs != null) {
 144                                 CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
 145                                 cattrs.CopyTo (new_array, 0);
 146                                 new_array [cattrs.Length] = customBuilder;
 147                                 cattrs = new_array;
 148                         } else {
 149                                 cattrs = new CustomAttributeBuilder [1];
 150                                 cattrs [0] = customBuilder;
 151                         }
 152                 }
 153                 public void SetCustomAttribute( ConstructorInfo con, byte[] binaryAttribute) {
 154                         if (con == null)
 155                                 throw new ArgumentNullException ("con");
 156                         if (binaryAttribute == null)
 157                                 throw new ArgumentNullException ("binaryAttribute");
 158
 159                         SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
 160                 }
 161                 public void SetImplementationFlags( MethodImplAttributes attributes) {
 162                         if (type.is_created)
 163                                 throw not_after_created ();
 164
 165                         iattrs = attributes;
 166                 }
 167                 public Module GetModule() {
 168                         return type.Module;
 169                 }
 170                 public MethodToken GetToken() {
 171                         return new MethodToken (0x06000000 | table_idx);
 172                 }
 173
 174                 [MonoTODO]
 175                 public void SetSymCustomAttribute( string name, byte[] data) {
 176                         if (type.is_created)
 177                                 throw not_after_created ();
 178                 }
 179
 180                 public override string ToString() {
 181                         return "constructor";
 182                 }
 183
 184                 internal void fixup () {
 185                         if (ilgen != null)
 186                                 ilgen.label_fixup ();
 187                 }
 188                 internal override int get_next_table_index (object obj, int table, bool inc) {
 189                         return type.get_next_table_index (obj, table, inc);
 190                 }
 191
 192                 private Exception not_supported () {
 193                         return new NotSupportedException ("The invoked member is not supported in a dynamic module.");
 194                 }
 195
 196                 private Exception not_after_created () {
 197                         return new InvalidOperationException ("Unable to change after type has been created.");
 198                 }
 199         }
 200 }