2 // System.Reflection.Emit/DynamicMethod.cs
5 // Paolo Molaro (lupus@ximian.com)
6 // Zoltan Varga (vargaz@freemail.hu)
8 // (C) 2003 Ximian, Inc. http://www.ximian.com
12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
14 // Permission is hereby granted, free of charge, to any person obtaining
15 // a copy of this software and associated documentation files (the
16 // "Software"), to deal in the Software without restriction, including
17 // without limitation the rights to use, copy, modify, merge, publish,
18 // distribute, sublicense, and/or sell copies of the Software, and to
19 // permit persons to whom the Software is furnished to do so, subject to
20 // the following conditions:
22 // The above copyright notice and this permission notice shall be
23 // included in all copies or substantial portions of the Software.
25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
34 #if NET_2_0 || BOOTSTRAP_NET_2_0
37 using System
.Reflection
;
38 using System
.Reflection
.Emit
;
39 using System
.Globalization
;
40 using System
.Runtime
.CompilerServices
;
41 using System
.Runtime
.InteropServices
;
43 namespace System
.Reflection
.Emit
{
45 public sealed class DynamicMethod
: MethodInfo
{
46 #region Sync with reflection.h
47 private RuntimeMethodHandle mhandle
;
49 private Type returnType
;
50 private Type
[] parameters
;
51 private MethodAttributes attributes
;
52 private CallingConventions callingConvention
;
53 private Module module
;
54 private bool skipVisibility
;
55 private bool init_locals
= true;
56 private ILGenerator ilgen
;
58 private object[] refs
;
60 private Delegate deleg
;
61 private MonoMethod method
;
62 private ParameterBuilder
[] pinfo
;
64 public DynamicMethod (string name
, Type returnType
, Type
[] parameterTypes
, Module m
) : this (name
, returnType
, parameterTypes
, m
, false) {
67 public DynamicMethod (string name
, Type returnType
, Type
[] parameterTypes
, Type owner
) : this (name
, returnType
, parameterTypes
, owner
, false) {
70 public DynamicMethod (string name
, Type returnType
, Type
[] parameterTypes
, Module m
, bool skipVisibility
) : this (name
, MethodAttributes
.Public
| MethodAttributes
.Static
, CallingConventions
.Standard
, returnType
, parameterTypes
, m
, skipVisibility
) {
73 public DynamicMethod (string name
, Type returnType
, Type
[] parameterTypes
, Type owner
, bool skipVisibility
) : this (name
, MethodAttributes
.Public
| MethodAttributes
.Static
, CallingConventions
.Standard
, returnType
, parameterTypes
, owner
, skipVisibility
) {
76 public DynamicMethod (string name
, MethodAttributes attributes
, CallingConventions callingConvention
, Type returnType
, Type
[] parameterTypes
, Type owner
, bool skipVisibility
) : this (name
, attributes
, callingConvention
, returnType
, parameterTypes
, owner
.Module
, skipVisibility
) {
79 public DynamicMethod (string name
, MethodAttributes attributes
, CallingConventions callingConvention
, Type returnType
, Type
[] parameterTypes
, Module m
, bool skipVisibility
) {
81 throw new ArgumentNullException ("name");
82 if (name
== String
.Empty
)
83 throw new ArgumentException ("Name can't be empty", "name");
84 if (returnType
== null)
85 throw new ArgumentNullException ("returnType");
87 throw new ArgumentNullException ("m");
88 if (returnType
.IsByRef
)
89 throw new ArgumentException ("Return type can't be a byref type", "returnType");
90 if (parameterTypes
!= null) {
91 for (int i
= 0; i
< parameterTypes
.Length
; ++i
)
92 if (parameterTypes
[i
] == null)
93 throw new ArgumentException ("Parameter " + i
+ " is null", "parameterTypes");
97 this.attributes
= attributes
| MethodAttributes
.Static
;
98 this.callingConvention
= callingConvention
;
99 this.returnType
= returnType
;
100 this.parameters
= parameterTypes
;
102 this.skipVisibility
= skipVisibility
;
105 [MethodImplAttribute(MethodImplOptions
.InternalCall
)]
106 private extern void create_dynamic_method (DynamicMethod m
);
108 private void CreateDynMethod () {
109 if (mhandle
.Value
== IntPtr
.Zero
)
110 create_dynamic_method (this);
113 public Delegate
CreateDelegate (Type delegateType
) {
114 if (delegateType
== null)
115 throw new ArgumentNullException ("delegateType");
121 deleg
= Delegate
.CreateDelegate (delegateType
, this);
126 public ParameterBuilder
DefineParameter (int position
, ParameterAttributes attributes
, string strParamName
)
129 // Extension: Mono allows position == 0 for the return attribute
131 if ((position
< 0) || (position
> parameters
.Length
))
132 throw new ArgumentOutOfRangeException ("position");
136 throw new NotImplementedException ();
139 public override MethodInfo
GetBaseDefinition () {
144 public override object[] GetCustomAttributes (bool inherit
) {
145 throw new NotImplementedException ();
149 public override object[] GetCustomAttributes (Type attributeType
,
151 throw new NotImplementedException ();
154 public ILGenerator
GetILGenerator () {
155 return GetILGenerator (64);
158 public ILGenerator
GetILGenerator (int size
) {
159 if (((GetMethodImplementationFlags () & MethodImplAttributes
.CodeTypeMask
) !=
160 MethodImplAttributes
.IL
) ||
161 ((GetMethodImplementationFlags () & MethodImplAttributes
.ManagedMask
) !=
162 MethodImplAttributes
.Managed
))
163 throw new InvalidOperationException ("Method body should not exist.");
166 ilgen
= new ILGenerator (Module
, new DynamicMethodTokenGenerator (this), size
);
170 public override MethodImplAttributes
GetMethodImplementationFlags () {
171 return MethodImplAttributes
.IL
| MethodImplAttributes
.Managed
;
174 public override ParameterInfo
[] GetParameters () {
175 if (parameters
== null)
176 return new ParameterInfo
[0];
178 ParameterInfo
[] retval
= new ParameterInfo
[parameters
.Length
];
179 for (int i
= 0; i
< parameters
.Length
; i
++) {
180 retval
[i
] = new ParameterInfo (pinfo
== null ? null : pinfo
[i
+ 1], parameters
[i
], this, i
+ 1);
185 public override object Invoke (object obj
, object[] parameters
) {
188 method
= new MonoMethod (mhandle
);
189 return method
.Invoke (obj
, parameters
);
192 public override object Invoke (object obj
, BindingFlags invokeAttr
,
193 Binder binder
, object[] parameters
,
194 CultureInfo culture
) {
197 method
= new MonoMethod (mhandle
);
198 return method
.Invoke (obj
, parameters
);
202 public override bool IsDefined (Type attributeType
, bool inherit
) {
203 throw new NotImplementedException ();
206 public override string ToString () {
208 ParameterInfo
[] p
= GetParameters ();
209 for (int i
= 0; i
< p
.Length
; ++i
) {
211 parms
= parms
+ ", ";
212 parms
= parms
+ p
[i
].ParameterType
.Name
;
214 return ReturnType
.Name
+" "+Name
+"("+parms
+")";
217 public override MethodAttributes Attributes
{
223 public override CallingConventions CallingConvention
{
225 return callingConvention
;
229 public override Type DeclaringType
{
235 public bool InitLocals
{
244 public override RuntimeMethodHandle MethodHandle
{
250 public override Module Module
{
256 public override string Name
{
262 public override Type ReflectedType
{
269 public ParameterInfo ReturnParameter
{
271 throw new NotImplementedException ();
275 public override Type ReturnType
{
282 public override ICustomAttributeProvider ReturnTypeCustomAttributes
{
284 throw new NotImplementedException ();
288 public override int MetadataToken
{
294 private void RejectIfCreated () {
295 if (mhandle
.Value
!= IntPtr
.Zero
)
296 throw new InvalidOperationException ("Type definition of the method is complete.");
299 private Exception
NotSupported () {
300 return new NotSupportedException ("The invoked member is not supported on a dynamic method.");
303 internal int AddRef (object reference
) {
305 refs
= new object [4];
306 if (nrefs
>= refs
.Length
) {
307 object [] new_refs
= new object [refs
.Length
* 2];
308 System
.Array
.Copy (refs
, new_refs
, refs
.Length
);
311 refs
[nrefs
] = reference
;
317 internal class DynamicMethodTokenGenerator
: TokenGenerator
{
319 private DynamicMethod m
;
321 public DynamicMethodTokenGenerator (DynamicMethod m
) {
325 public int GetToken (string str
) {
326 return m
.AddRef (str
);
329 public int GetToken (MethodInfo method
, Type
[] opt_param_types
) {
330 throw new InvalidOperationException ();
333 public int GetToken (MemberInfo member
) {
334 return m
.AddRef (member
);
337 public int GetToken (SignatureHelper helper
) {
338 return m
.AddRef (helper
);