2005-01-31 Zoltan Varga <vargaz@freemail.hu>
[mono.git] / mcs / class / corlib / System.Reflection.Emit / MethodBuilder.cs
index 7f44d3192cd468c37cf8a26e3550b26dab080767..1c3b4ebb11a9ffc61630041814a1ef8cf8f459ff 100755 (executable)
@@ -1,4 +1,3 @@
-
 //
 // System.Reflection.Emit/MethodBuilder.cs
 //
@@ -8,14 +7,40 @@
 // (C) 2001 Ximian, Inc.  http://www.ximian.com
 //
 
+//
+// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
 using System;
 using System.Reflection;
 using System.Reflection.Emit;
 using System.Globalization;
+using System.Security;
+using System.Security.Permissions;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 
 namespace System.Reflection.Emit {
+
        public sealed class MethodBuilder : MethodInfo {
                private RuntimeMethodHandle mhandle;
                private Type rtype;
@@ -36,12 +61,31 @@ namespace System.Reflection.Emit {
                private CallingConvention native_cc;
                private CallingConventions call_conv;
                private bool init_locals = true;
+               private IntPtr generic_container;
+#if NET_2_0 || BOOTSTRAP_NET_2_0
+               private GenericTypeParameterBuilder[] generic_params;
+#else
+               private Object generic_params; /* so offsets are the same */
+#endif
+               private Type[] returnModReq;
+               private Type[] returnModOpt;
+               private Type[][] paramModReq;
+               private Type[][] paramModOpt;
+               private RefEmitPermissionSet[] permissions;
 
-               internal MethodBuilder (TypeBuilder tb, string name, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] parameterTypes) {
+               internal MethodBuilder (TypeBuilder tb, string name, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] returnModReq, Type[] returnModOpt, Type[] parameterTypes, Type[][] paramModReq, Type[][] paramModOpt) {
                        this.name = name;
                        this.attrs = attributes;
                        this.call_conv = callingConvention;
                        this.rtype = returnType;
+                       this.returnModReq = returnModReq;
+                       this.returnModOpt = returnModOpt;
+                       this.paramModReq = paramModReq;
+                       this.paramModOpt = paramModOpt;
+                       // The MSDN docs does not specify this, but the MS MethodBuilder
+                       // appends a HasThis flag if the method is not static
+                       if ((attributes & MethodAttributes.Static) == 0)
+                               this.call_conv |= CallingConventions.HasThis;
                        if (parameterTypes != null) {
                                this.parameters = new Type [parameterTypes.Length];
                                System.Array.Copy (parameterTypes, this.parameters, parameterTypes.Length);
@@ -52,9 +96,9 @@ namespace System.Reflection.Emit {
                }
 
                internal MethodBuilder (TypeBuilder tb, string name, MethodAttributes attributes, 
-                       CallingConventions callingConvention, Type returnType, Type[] parameterTypes
+                                                               CallingConventions callingConvention, Type returnType, Type[] returnModReq, Type[] returnModOpt, Type[] parameterTypes, Type[][] paramModReq, Type[][] paramModOpt
                        String dllName, String entryName, CallingConvention nativeCConv, CharSet nativeCharset) 
-                       : this (tb, name, attributes, callingConvention, returnType, parameterTypes) {
+                       : this (tb, name, attributes, callingConvention, returnType, returnModReq, returnModOpt, parameterTypes, paramModReq, paramModOpt) {
                        pi_dll = dllName;
                        pi_entry = entryName;
                        native_cc = nativeCConv;
@@ -69,70 +113,122 @@ namespace System.Reflection.Emit {
                internal TypeBuilder TypeBuilder {
                        get {return type;}
                }
-               
+
+               public override RuntimeMethodHandle MethodHandle {
+                       get {
+                               throw NotSupported ();
+                       }
+               }
+
                public override Type ReturnType {get {return rtype;}}
                public override Type ReflectedType {get {return type;}}
                public override Type DeclaringType {get {return type;}}
                public override string Name {get {return name;}}
-               public override RuntimeMethodHandle MethodHandle {get {return mhandle;}}
                public override MethodAttributes Attributes {get {return attrs;}}
                public override ICustomAttributeProvider ReturnTypeCustomAttributes {
                        get {return null;}
                }
+
+               public override CallingConventions CallingConvention { 
+                       get { return call_conv; }
+               }
+
+               [MonoTODO]
+               public string Signature {
+                       get {
+                               throw new NotImplementedException ();
+                       }
+               }
+
                public MethodToken GetToken() {
                        return new MethodToken(0x06000000 | table_idx);
                }
                
                public override MethodInfo GetBaseDefinition() {
-                       return null;
+                       return this;
                }
                public override MethodImplAttributes GetMethodImplementationFlags() {
                        return iattrs;
                }
                public override ParameterInfo[] GetParameters() {
-                       if ((parameters == null) || (pinfo == null))
+                       if (!type.is_created)
+                               throw NotSupported ();
+                       if (parameters == null)
                                return null;
 
                        ParameterInfo[] retval = new ParameterInfo [parameters.Length];
-                       for (int i = 1; i < parameters.Length + 1; i++) {
-                               if (pinfo [i] == null)
-                                       return null;
-
-                               retval [i - 1] = new ParameterInfo (pinfo [i], parameters [i - 1], this);
+                       for (int i = 0; i < parameters.Length; i++) {
+                               retval [i] = new ParameterInfo (pinfo == null ? null : pinfo [i + 1], parameters [i], this, i + 1);
                        }
-
                        return retval;
                }
                
+               internal override int GetParameterCount ()
+               {
+                       if (parameters == null)
+                               return 0;
+                       
+                       return parameters.Length;
+               }
+
+               public Module GetModule () {
+                       return type.Module;
+               }
+
                public void CreateMethodBody( byte[] il, int count) {
-                       code = new byte [count];
-                       System.Array.Copy(il, code, count);
+                       if ((il != null) && ((count < 0) || (count > il.Length)))
+                               throw new ArgumentException ("Index was out of range.  Must be non-negative and less than the size of the collection.");
+
+                       if ((code != null) || type.is_created)
+                               throw new InvalidOperationException ("Type definition of the method is complete.");
+
+                       if (il == null)
+                               code = null;
+                       else {
+                               code = new byte [count];
+                               System.Array.Copy(il, code, count);
+                       }
                }
+
                public override Object Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) {
-                       return null;
+                       throw NotSupported ();
                }
                public override bool IsDefined (Type attribute_type, bool inherit) {
-                       return false;
+                       throw NotSupported ();
                }
                public override object[] GetCustomAttributes( bool inherit) {
-                       return null;
+                       throw NotSupported ();
                }
                public override object[] GetCustomAttributes( Type attributeType, bool inherit) {
-                       return null;
+                       throw NotSupported ();
                }
                public ILGenerator GetILGenerator () {
                        return GetILGenerator (64);
                }
+
                public ILGenerator GetILGenerator (int size) {
-                       ilgen = new ILGenerator (this, size);
+                       if (((iattrs & MethodImplAttributes.CodeTypeMask) != 
+                                MethodImplAttributes.IL) ||
+                               ((iattrs & MethodImplAttributes.ManagedMask) != 
+                                MethodImplAttributes.Managed))
+                               throw new InvalidOperationException ("Method body should not exist.");
+                       if (ilgen != null)
+                               return ilgen;
+                       ilgen = new ILGenerator (type.Module, ((ModuleBuilder)type.Module).GetTokenGenerator (), size);
                        return ilgen;
                }
                
-               [MonoTODO]
                public ParameterBuilder DefineParameter (int position, ParameterAttributes attributes, string strParamName)
                {
+                       RejectIfCreated ();
+                       
+                       //
+                       // Extension: Mono allows position == 0 for the return attribute
+                       //
+                       if ((position < 0) || (position > parameters.Length))
+                               throw new ArgumentOutOfRangeException ("position");
+
                        ParameterBuilder pb = new ParameterBuilder (this, position, attributes, strParamName);
-                       // check position
                        if (pinfo == null)
                                pinfo = new ParameterBuilder [parameters.Length + 1];
                        pinfo [position] = pb;
@@ -145,6 +241,8 @@ namespace System.Reflection.Emit {
                }
 
                public void SetCustomAttribute( CustomAttributeBuilder customBuilder) {
+                       if (customBuilder == null)
+                               throw new ArgumentNullException ("customBuilder");
                        string attrname = customBuilder.Ctor.ReflectedType.FullName;
                        if (attrname == "System.Runtime.CompilerServices.MethodImplAttribute") {
                                byte[] data = customBuilder.Data;
@@ -165,11 +263,74 @@ namespace System.Reflection.Emit {
                        }
                }
                public void SetCustomAttribute( ConstructorInfo con, byte[] binaryAttribute) {
+                       if (con == null)
+                               throw new ArgumentNullException ("con");
+                       if (binaryAttribute == null)
+                               throw new ArgumentNullException ("binaryAttribute");
                        SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
                }
                public void SetImplementationFlags( MethodImplAttributes attributes) {
+                       RejectIfCreated ();
                        iattrs = attributes;
                }
+
+               public void AddDeclarativeSecurity( SecurityAction action, PermissionSet pset) {
+                       if (pset == null)
+                               throw new ArgumentNullException ("pset");
+                       if ((action == SecurityAction.RequestMinimum) ||
+                               (action == SecurityAction.RequestOptional) ||
+                               (action == SecurityAction.RequestRefuse))
+                               throw new ArgumentException ("Request* values are not permitted", "action");
+
+                       RejectIfCreated ();
+
+                       if (permissions != null) {
+                               /* Check duplicate actions */
+                               foreach (RefEmitPermissionSet set in permissions)
+                                       if (set.action == action)
+                                               throw new InvalidOperationException ("Multiple permission sets specified with the same SecurityAction.");
+
+                               RefEmitPermissionSet[] new_array = new RefEmitPermissionSet [permissions.Length + 1];
+                               permissions.CopyTo (new_array, 0);
+                               permissions = new_array;
+                       }
+                       else
+                               permissions = new RefEmitPermissionSet [1];
+
+                       permissions [permissions.Length - 1] = new RefEmitPermissionSet (action, pset.ToXml ().ToString ());
+                       attrs |= MethodAttributes.HasSecurity;
+               }
+
+               [MonoTODO]
+               public void SetMarshal (UnmanagedMarshal unmanagedMarshal)
+               {
+                       RejectIfCreated ();
+                       throw new NotImplementedException ();
+               }
+
+               [MonoTODO]
+               public void SetSymCustomAttribute (string name, byte[] data)
+               {
+                       RejectIfCreated ();
+                       throw new NotImplementedException ();
+               }
+
+               public override string ToString()
+               {
+                       return "MethodBuilder [" + type.Name + "::" + name + "]";
+               }
+
+               [MonoTODO]
+               public override bool Equals (object obj)
+               {
+                       return base.Equals (obj);
+               }
+
+               public override int GetHashCode ()
+               {
+                       return name.GetHashCode ();
+               }
+
                internal override int get_next_table_index (object obj, int table, bool inc) {
                        return type.get_next_table_index (obj, table, inc);
                }
@@ -177,6 +338,68 @@ namespace System.Reflection.Emit {
                internal void set_override (MethodInfo mdecl) {
                        override_method = mdecl;
                }
+
+               private void RejectIfCreated () {
+                       if (type.is_created)
+                               throw new InvalidOperationException ("Type definition of the method is complete.");
+               }
+
+               private Exception NotSupported () {
+                       return new NotSupportedException ("The invoked member is not supported in a dynamic module.");
+               }
+
+#if NET_2_0 || BOOTSTRAP_NET_2_0
+               [MethodImplAttribute(MethodImplOptions.InternalCall)]
+               public override extern MethodInfo BindGenericParameters (Type [] types);
+
+               public override bool Mono_IsInflatedMethod {
+                       get {
+                               return false;
+                       }
+               }
+
+               public override bool HasGenericParameters {
+                       get {
+                               return generic_params != null;
+                       }
+               }
+
+               public override Type[] GetGenericArguments ()
+               {
+                       if (generic_params == null)
+                               return new Type [0];
+
+                       Type[] result = new Type [generic_params.Length];
+                       for (int i = 0; i < generic_params.Length; i++)
+                               result [i] = generic_params [i];
+
+                       return result;
+               }
+
+               public GenericTypeParameterBuilder[] DefineGenericParameters (params string[] names)
+               {
+                       generic_params = new GenericTypeParameterBuilder [names.Length];
+                       for (int i = 0; i < names.Length; i++)
+                               generic_params [i] = new GenericTypeParameterBuilder (
+                                       type, this, names [i], i);
+
+                       return generic_params;
+               }
+
+               public void SetGenericMethodSignature (MethodAttributes attributes, CallingConventions callingConvention, Type return_type, Type[] parameter_types)
+               {
+                       RejectIfCreated ();
+
+                       this.attrs = attributes;
+                       this.call_conv = callingConvention;
+                       if ((attributes & MethodAttributes.Static) == 0)
+                               this.call_conv |= CallingConventions.HasThis;
+
+                       this.rtype = return_type;
+                       this.parameters = new Type [parameter_types.Length];
+                       System.Array.Copy (parameter_types, this.parameters, parameter_types.Length);
+               }
+#endif
        }
 }