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

   1
   2 //
   3 // System.Reflection.Emit/MethodBuilder.cs
   4 //
   5 // Author:
   6 //   Paolo Molaro (lupus@ximian.com)
   7 //
   8 // (C) 2001 Ximian, Inc.  http://www.ximian.com
   9 //
  10
  11 using System;
  12 using System.Reflection;
  13 using System.Reflection.Emit;
  14 using System.Globalization;
  15 using System.Runtime.CompilerServices;
  16 using System.Runtime.InteropServices;
  17
  18 namespace System.Reflection.Emit {
  19         public sealed class MethodBuilder : MethodInfo {
  20                 private RuntimeMethodHandle mhandle;
  21                 private Type rtype;
  22                 private Type[] parameters;
  23                 private MethodAttributes attrs;
  24                 private MethodImplAttributes iattrs;
  25                 private string name;
  26                 private int table_idx;
  27                 private byte[] code;
  28                 private ILGenerator ilgen;
  29                 private TypeBuilder type;
  30                 private ParameterBuilder[] pinfo;
  31                 private CustomAttributeBuilder[] cattrs;
  32                 private MethodInfo override_method;
  33                 private string pi_dll;
  34                 private string pi_entry;
  35                 private CharSet ncharset;
  36                 private CallingConvention native_cc;
  37                 private CallingConventions call_conv;
  38
  39                 internal MethodBuilder (TypeBuilder tb, string name, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] parameterTypes) {
  40                         this.name = name;
  41                         this.attrs = attributes;
  42                         this.call_conv = callingConvention;
  43                         this.rtype = returnType;
  44                         if (parameterTypes != null) {
  45                                 this.parameters = new Type [parameterTypes.Length];
  46                                 System.Array.Copy (parameterTypes, this.parameters, parameterTypes.Length);
  47                         }
  48                         type = tb;
  49                         table_idx = get_next_table_index (0x06, true);
  50                         //Console.WriteLine ("index for "+name+" set to "+table_idx.ToString());
  51                 }
  52
  53                 internal MethodBuilder (TypeBuilder tb, string name, MethodAttributes attributes,
  54                         CallingConventions callingConvention, Type returnType, Type[] parameterTypes,
  55                         String dllName, String entryName, CallingConvention nativeCConv, CharSet nativeCharset)
  56                         : this (tb, name, attributes, callingConvention, returnType, parameterTypes) {
  57                         pi_dll = dllName;
  58                         pi_entry = entryName;
  59                         native_cc = nativeCConv;
  60                         ncharset = nativeCharset;
  61                 }
  62
  63                 internal TypeBuilder TypeBuilder {
  64                         get {return type;}
  65                 }
  66
  67                 public override Type ReturnType {get {return rtype;}}
  68                 public override Type ReflectedType {get {return type;}}
  69                 public override Type DeclaringType {get {return type;}}
  70                 public override string Name {get {return name;}}
  71                 public override RuntimeMethodHandle MethodHandle {get {return mhandle;}}
  72                 public override MethodAttributes Attributes {get {return attrs;}}
  73                 public override ICustomAttributeProvider ReturnTypeCustomAttributes {
  74                         get {return null;}
  75                 }
  76                 public MethodToken GetToken() {
  77                         return new MethodToken(0x06000000 | table_idx);
  78                 }
  79
  80                 public override MethodInfo GetBaseDefinition() {
  81                         return null;
  82                 }
  83                 public override MethodImplAttributes GetMethodImplementationFlags() {
  84                         return iattrs;
  85                 }
  86                 public override ParameterInfo[] GetParameters() {
  87                         return null;
  88                 }
  89
  90                 public void CreateMethodBody( byte[] il, int count) {
  91                         code = new byte [count];
  92                         System.Array.Copy(il, code, count);
  93                 }
  94                 public override Object Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) {
  95                         return null;
  96                 }
  97                 public override bool IsDefined (Type attribute_type, bool inherit) {
  98                         return false;
  99                 }
 100                 public override object[] GetCustomAttributes( bool inherit) {
 101                         return null;
 102                 }
 103                 public override object[] GetCustomAttributes( Type attributeType, bool inherit) {
 104                         return null;
 105                 }
 106                 public ILGenerator GetILGenerator () {
 107                         return GetILGenerator (256);
 108                 }
 109                 internal ILGenerator GetILGenerator (int size) {
 110                         ilgen = new ILGenerator (this, size);
 111                         return ilgen;
 112                 }
 113
 114                 [MonoTODO]
 115                 public ParameterBuilder DefineParameter (int position, ParameterAttributes attributes, string strParamName)
 116                 {
 117                         ParameterBuilder pb = new ParameterBuilder (this, position, attributes, strParamName);
 118                         // check position
 119                         if (pinfo == null)
 120                                 pinfo = new ParameterBuilder [parameters.Length + 1];
 121                         pinfo [position] = pb;
 122                         return pb;
 123                 }
 124
 125                 internal void fixup () {
 126                         if (ilgen != null)
 127                                 ilgen.label_fixup ();
 128                 }
 129
 130                 public void SetCustomAttribute( CustomAttributeBuilder customBuilder) {
 131                         if (cattrs != null) {
 132                                 CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
 133                                 cattrs.CopyTo (new_array, 0);
 134                                 new_array [cattrs.Length] = customBuilder;
 135                                 cattrs = new_array;
 136                         } else {
 137                                 cattrs = new CustomAttributeBuilder [1];
 138                                 cattrs [0] = customBuilder;
 139                         }
 140                 }
 141                 public void SetCustomAttribute( ConstructorInfo con, byte[] binaryAttribute) {
 142                         SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
 143                 }
 144                 public void SetImplementationFlags( MethodImplAttributes attributes) {
 145                         iattrs = attributes;
 146                 }
 147                 internal override int get_next_table_index (int table, bool inc) {
 148                         return type.get_next_table_index (table, inc);
 149                 }
 150
 151                 internal void set_override (MethodInfo mdecl) {
 152                         override_method = mdecl;
 153                 }
 154         }
 155 }
 156