2 // System.Reflection.Emit/MethodBuilder.cs
5 // Paolo Molaro (lupus@ximian.com)
7 // (C) 2001 Ximian, Inc. http://www.ximian.com
11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
13 // Permission is hereby granted, free of charge, to any person obtaining
14 // a copy of this software and associated documentation files (the
15 // "Software"), to deal in the Software without restriction, including
16 // without limitation the rights to use, copy, modify, merge, publish,
17 // distribute, sublicense, and/or sell copies of the Software, and to
18 // permit persons to whom the Software is furnished to do so, subject to
19 // the following conditions:
21 // The above copyright notice and this permission notice shall be
22 // included in all copies or substantial portions of the Software.
24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
34 using System.Reflection;
35 using System.Reflection.Emit;
36 using System.Globalization;
37 using System.Security;
38 using System.Security.Permissions;
39 using System.Runtime.CompilerServices;
40 using System.Runtime.InteropServices;
42 namespace System.Reflection.Emit {
44 public sealed class MethodBuilder : MethodInfo {
45 private RuntimeMethodHandle mhandle;
47 private Type[] parameters;
48 private MethodAttributes attrs;
49 private MethodImplAttributes iattrs;
51 private int table_idx;
53 private ILGenerator ilgen;
54 private TypeBuilder type;
55 private ParameterBuilder[] pinfo;
56 private CustomAttributeBuilder[] cattrs;
57 private MethodInfo override_method;
58 private string pi_dll;
59 private string pi_entry;
60 private CharSet ncharset;
61 private CallingConvention native_cc;
62 private CallingConventions call_conv;
63 private bool init_locals = true;
64 private IntPtr generic_container;
65 #if NET_2_0 || BOOTSTRAP_NET_2_0
66 private GenericTypeParameterBuilder[] generic_params;
68 private Object generic_params; /* so offsets are the same */
70 private Type[] returnModReq;
71 private Type[] returnModOpt;
72 private Type[][] paramModReq;
73 private Type[][] paramModOpt;
74 private RefEmitPermissionSet[] permissions;
76 internal MethodBuilder (TypeBuilder tb, string name, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] returnModReq, Type[] returnModOpt, Type[] parameterTypes, Type[][] paramModReq, Type[][] paramModOpt) {
78 this.attrs = attributes;
79 this.call_conv = callingConvention;
80 this.rtype = returnType;
81 this.returnModReq = returnModReq;
82 this.returnModOpt = returnModOpt;
83 this.paramModReq = paramModReq;
84 this.paramModOpt = paramModOpt;
85 // The MSDN docs does not specify this, but the MS MethodBuilder
86 // appends a HasThis flag if the method is not static
87 if ((attributes & MethodAttributes.Static) == 0)
88 this.call_conv |= CallingConventions.HasThis;
89 if (parameterTypes != null) {
90 this.parameters = new Type [parameterTypes.Length];
91 System.Array.Copy (parameterTypes, this.parameters, parameterTypes.Length);
94 table_idx = get_next_table_index (this, 0x06, true);
95 //Console.WriteLine ("index for "+name+" set to "+table_idx.ToString());
98 internal MethodBuilder (TypeBuilder tb, string name, MethodAttributes attributes,
99 CallingConventions callingConvention, Type returnType, Type[] returnModReq, Type[] returnModOpt, Type[] parameterTypes, Type[][] paramModReq, Type[][] paramModOpt,
100 String dllName, String entryName, CallingConvention nativeCConv, CharSet nativeCharset)
101 : this (tb, name, attributes, callingConvention, returnType, returnModReq, returnModOpt, parameterTypes, paramModReq, paramModOpt) {
103 pi_entry = entryName;
104 native_cc = nativeCConv;
105 ncharset = nativeCharset;
108 public bool InitLocals {
109 get {return init_locals;}
110 set {init_locals = value;}
113 internal TypeBuilder TypeBuilder {
117 public override RuntimeMethodHandle MethodHandle {
119 throw NotSupported ();
123 public override Type ReturnType {get {return rtype;}}
124 public override Type ReflectedType {get {return type;}}
125 public override Type DeclaringType {get {return type;}}
126 public override string Name {get {return name;}}
127 public override MethodAttributes Attributes {get {return attrs;}}
128 public override ICustomAttributeProvider ReturnTypeCustomAttributes {
132 public override CallingConventions CallingConvention {
133 get { return call_conv; }
137 public string Signature {
139 throw new NotImplementedException ();
143 public MethodToken GetToken() {
144 return new MethodToken(0x06000000 | table_idx);
147 public override MethodInfo GetBaseDefinition() {
150 public override MethodImplAttributes GetMethodImplementationFlags() {
153 public override ParameterInfo[] GetParameters() {
154 if (!type.is_created)
155 throw NotSupported ();
156 if (parameters == null)
159 ParameterInfo[] retval = new ParameterInfo [parameters.Length];
160 for (int i = 0; i < parameters.Length; i++) {
161 retval [i] = new ParameterInfo (pinfo == null ? null : pinfo [i + 1], parameters [i], this, i + 1);
166 internal override int GetParameterCount ()
168 if (parameters == null)
171 return parameters.Length;
174 public Module GetModule () {
178 public void CreateMethodBody( byte[] il, int count) {
179 if ((il != null) && ((count < 0) || (count > il.Length)))
180 throw new ArgumentException ("Index was out of range. Must be non-negative and less than the size of the collection.");
182 if ((code != null) || type.is_created)
183 throw new InvalidOperationException ("Type definition of the method is complete.");
188 code = new byte [count];
189 System.Array.Copy(il, code, count);
193 public override Object Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) {
194 throw NotSupported ();
196 public override bool IsDefined (Type attribute_type, bool inherit) {
197 throw NotSupported ();
199 public override object[] GetCustomAttributes( bool inherit) {
200 throw NotSupported ();
202 public override object[] GetCustomAttributes( Type attributeType, bool inherit) {
203 throw NotSupported ();
205 public ILGenerator GetILGenerator () {
206 return GetILGenerator (64);
209 public ILGenerator GetILGenerator (int size) {
210 if (((iattrs & MethodImplAttributes.CodeTypeMask) !=
211 MethodImplAttributes.IL) ||
212 ((iattrs & MethodImplAttributes.ManagedMask) !=
213 MethodImplAttributes.Managed))
214 throw new InvalidOperationException ("Method body should not exist.");
217 ilgen = new ILGenerator (type.Module, ((ModuleBuilder)type.Module).GetTokenGenerator (), size);
221 public ParameterBuilder DefineParameter (int position, ParameterAttributes attributes, string strParamName)
226 // Extension: Mono allows position == 0 for the return attribute
228 if ((position < 0) || (position > parameters.Length))
229 throw new ArgumentOutOfRangeException ("position");
231 ParameterBuilder pb = new ParameterBuilder (this, position, attributes, strParamName);
233 pinfo = new ParameterBuilder [parameters.Length + 1];
234 pinfo [position] = pb;
238 internal void fixup () {
240 ilgen.label_fixup ();
243 public void SetCustomAttribute( CustomAttributeBuilder customBuilder) {
244 if (customBuilder == null)
245 throw new ArgumentNullException ("customBuilder");
246 string attrname = customBuilder.Ctor.ReflectedType.FullName;
247 if (attrname == "System.Runtime.CompilerServices.MethodImplAttribute") {
248 byte[] data = customBuilder.Data;
249 int impla; // the (stupid) ctor takes a short or an int ...
250 impla = (int)data [2];
251 impla |= ((int)data [3]) << 8;
252 SetImplementationFlags ((MethodImplAttributes)impla);
255 if (cattrs != null) {
256 CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
257 cattrs.CopyTo (new_array, 0);
258 new_array [cattrs.Length] = customBuilder;
261 cattrs = new CustomAttributeBuilder [1];
262 cattrs [0] = customBuilder;
265 public void SetCustomAttribute( ConstructorInfo con, byte[] binaryAttribute) {
267 throw new ArgumentNullException ("con");
268 if (binaryAttribute == null)
269 throw new ArgumentNullException ("binaryAttribute");
270 SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
272 public void SetImplementationFlags( MethodImplAttributes attributes) {
277 public void AddDeclarativeSecurity( SecurityAction action, PermissionSet pset) {
279 throw new ArgumentNullException ("pset");
280 if ((action == SecurityAction.RequestMinimum) ||
281 (action == SecurityAction.RequestOptional) ||
282 (action == SecurityAction.RequestRefuse))
283 throw new ArgumentException ("Request* values are not permitted", "action");
287 if (permissions != null) {
288 /* Check duplicate actions */
289 foreach (RefEmitPermissionSet set in permissions)
290 if (set.action == action)
291 throw new InvalidOperationException ("Multiple permission sets specified with the same SecurityAction.");
293 RefEmitPermissionSet[] new_array = new RefEmitPermissionSet [permissions.Length + 1];
294 permissions.CopyTo (new_array, 0);
295 permissions = new_array;
298 permissions = new RefEmitPermissionSet [1];
300 permissions [permissions.Length - 1] = new RefEmitPermissionSet (action, pset.ToXml ().ToString ());
301 attrs |= MethodAttributes.HasSecurity;
305 public void SetMarshal (UnmanagedMarshal unmanagedMarshal)
308 throw new NotImplementedException ();
312 public void SetSymCustomAttribute (string name, byte[] data)
315 throw new NotImplementedException ();
318 public override string ToString()
320 return "MethodBuilder [" + type.Name + "::" + name + "]";
324 public override bool Equals (object obj)
326 return base.Equals (obj);
329 public override int GetHashCode ()
331 return name.GetHashCode ();
334 internal override int get_next_table_index (object obj, int table, bool inc) {
335 return type.get_next_table_index (obj, table, inc);
338 internal void set_override (MethodInfo mdecl) {
339 override_method = mdecl;
342 private void RejectIfCreated () {
344 throw new InvalidOperationException ("Type definition of the method is complete.");
347 private Exception NotSupported () {
348 return new NotSupportedException ("The invoked member is not supported in a dynamic module.");
351 #if NET_2_0 || BOOTSTRAP_NET_2_0
352 [MethodImplAttribute(MethodImplOptions.InternalCall)]
353 public override extern MethodInfo BindGenericParameters (Type [] types);
355 public override bool Mono_IsInflatedMethod {
361 public override bool HasGenericParameters {
363 return generic_params != null;
367 public override Type[] GetGenericArguments ()
369 if (generic_params == null)
372 Type[] result = new Type [generic_params.Length];
373 for (int i = 0; i < generic_params.Length; i++)
374 result [i] = generic_params [i];
379 public GenericTypeParameterBuilder[] DefineGenericParameters (string[] names)
381 generic_params = new GenericTypeParameterBuilder [names.Length];
382 for (int i = 0; i < names.Length; i++)
383 generic_params [i] = new GenericTypeParameterBuilder (
384 type, this, names [i], i);
386 return generic_params;
389 public void SetGenericMethodSignature (MethodAttributes attributes, CallingConventions callingConvention, Type return_type, Type[] parameter_types)
393 this.attrs = attributes;
394 this.call_conv = callingConvention;
395 if ((attributes & MethodAttributes.Static) == 0)
396 this.call_conv |= CallingConventions.HasThis;
398 this.rtype = return_type;
399 this.parameters = new Type [parameter_types.Length];
400 System.Array.Copy (parameter_types, this.parameters, parameter_types.Length);