731 lines
22 KiB
C#
731 lines
22 KiB
C#
//
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// System.Reflection.Emit/MethodBuilder.cs
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//
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// Author:
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// Paolo Molaro (lupus@ximian.com)
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//
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// (C) 2001 Ximian, Inc. http://www.ximian.com
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//
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//
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// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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#if MONO_FEATURE_SRE
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using System;
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using System.Reflection;
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using System.Reflection.Emit;
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using System.Globalization;
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using System.Security;
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using System.Security.Permissions;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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using System.Diagnostics.SymbolStore;
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using System.Collections.Generic;
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namespace System.Reflection.Emit
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{
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#if !MOBILE
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[ComVisible (true)]
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[ComDefaultInterface (typeof (_MethodBuilder))]
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[ClassInterface (ClassInterfaceType.None)]
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partial class MethodBuilder : _MethodBuilder
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{
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void _MethodBuilder.GetIDsOfNames([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
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{
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throw new NotImplementedException ();
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}
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void _MethodBuilder.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
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{
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throw new NotImplementedException ();
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}
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void _MethodBuilder.GetTypeInfoCount (out uint pcTInfo)
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{
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throw new NotImplementedException ();
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}
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void _MethodBuilder.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams, IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
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{
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throw new NotImplementedException ();
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}
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}
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#endif
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[StructLayout (LayoutKind.Sequential)]
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public sealed partial class MethodBuilder : MethodInfo
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{
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#pragma warning disable 169, 414
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private RuntimeMethodHandle mhandle;
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private Type rtype;
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internal Type[] parameters;
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private MethodAttributes attrs; /* It's used directly by MCS */
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private MethodImplAttributes iattrs;
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private string name;
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private int table_idx;
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private byte[] code;
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private ILGenerator ilgen;
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private TypeBuilder type;
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internal ParameterBuilder[] pinfo;
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private CustomAttributeBuilder[] cattrs;
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private MethodInfo[] override_methods;
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private string pi_dll;
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private string pi_entry;
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private CharSet charset;
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private uint extra_flags; /* this encodes set_last_error etc */
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private CallingConvention native_cc;
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private CallingConventions call_conv;
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private bool init_locals = true;
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private IntPtr generic_container;
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internal GenericTypeParameterBuilder[] generic_params;
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private Type[] returnModReq;
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private Type[] returnModOpt;
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private Type[][] paramModReq;
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private Type[][] paramModOpt;
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private RefEmitPermissionSet[] permissions;
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#pragma warning restore 169, 414
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internal MethodBuilder (TypeBuilder tb, string name, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] returnModReq, Type[] returnModOpt, Type[] parameterTypes, Type[][] paramModReq, Type[][] paramModOpt)
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{
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this.name = name;
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this.attrs = attributes;
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this.call_conv = callingConvention;
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this.rtype = returnType;
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this.returnModReq = returnModReq;
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this.returnModOpt = returnModOpt;
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this.paramModReq = paramModReq;
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this.paramModOpt = paramModOpt;
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// The MSDN docs does not specify this, but the MS MethodBuilder
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// appends a HasThis flag if the method is not static
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if ((attributes & MethodAttributes.Static) == 0)
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this.call_conv |= CallingConventions.HasThis;
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if (parameterTypes != null) {
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for (int i = 0; i < parameterTypes.Length; ++i)
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if (parameterTypes [i] == null)
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throw new ArgumentException ("Elements of the parameterTypes array cannot be null", "parameterTypes");
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this.parameters = new Type [parameterTypes.Length];
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System.Array.Copy (parameterTypes, this.parameters, parameterTypes.Length);
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}
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type = tb;
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table_idx = get_next_table_index (this, 0x06, 1);
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((ModuleBuilder)tb.Module).RegisterToken (this, GetToken ().Token);
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}
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internal MethodBuilder (TypeBuilder tb, string name, MethodAttributes attributes,
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CallingConventions callingConvention, Type returnType, Type[] returnModReq, Type[] returnModOpt, Type[] parameterTypes, Type[][] paramModReq, Type[][] paramModOpt,
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String dllName, String entryName, CallingConvention nativeCConv, CharSet nativeCharset)
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: this (tb, name, attributes, callingConvention, returnType, returnModReq, returnModOpt, parameterTypes, paramModReq, paramModOpt)
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{
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pi_dll = dllName;
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pi_entry = entryName;
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native_cc = nativeCConv;
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charset = nativeCharset;
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}
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public override bool ContainsGenericParameters {
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get { throw new NotSupportedException (); }
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}
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public bool InitLocals {
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get {return init_locals;}
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set {init_locals = value;}
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}
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internal TypeBuilder TypeBuilder {
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get {return type;}
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}
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public override RuntimeMethodHandle MethodHandle {
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get {
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throw NotSupported ();
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}
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}
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internal RuntimeMethodHandle MethodHandleInternal {
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get {
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return mhandle;
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}
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}
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public override Type ReturnType {
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get { return rtype; }
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}
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public override Type ReflectedType {
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get { return type; }
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}
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public override Type DeclaringType {
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get { return type; }
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}
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public override string Name {
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get { return name; }
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}
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public override MethodAttributes Attributes {
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get { return attrs; }
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}
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public override ICustomAttributeProvider ReturnTypeCustomAttributes {
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get { return null; }
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}
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public override CallingConventions CallingConvention {
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get { return call_conv; }
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}
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[MonoTODO("Not implemented")]
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public string Signature {
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get {
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throw new NotImplementedException ();
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}
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}
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/* Used by mcs */
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internal bool BestFitMapping {
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set {
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extra_flags = (uint) ((extra_flags & ~0x30) | (uint)(value ? 0x10 : 0x20));
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}
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}
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/* Used by mcs */
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internal bool ThrowOnUnmappableChar {
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set {
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extra_flags = (uint) ((extra_flags & ~0x3000) | (uint)(value ? 0x1000 : 0x2000));
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}
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}
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/* Used by mcs */
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internal bool ExactSpelling {
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set {
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extra_flags = (uint) ((extra_flags & ~0x01) | (uint)(value ? 0x01 : 0x00));
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}
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}
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/* Used by mcs */
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internal bool SetLastError {
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set {
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extra_flags = (uint) ((extra_flags & ~0x40) | (uint)(value ? 0x40 : 0x00));
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}
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}
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public MethodToken GetToken()
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{
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return new MethodToken(0x06000000 | table_idx);
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}
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public override MethodInfo GetBaseDefinition()
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{
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return this;
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}
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public override MethodImplAttributes GetMethodImplementationFlags()
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{
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return iattrs;
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}
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public override ParameterInfo[] GetParameters()
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{
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if (!type.is_created)
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throw NotSupported ();
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return GetParametersInternal ();
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}
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internal override ParameterInfo[] GetParametersInternal ()
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{
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if (parameters == null)
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return null;
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ParameterInfo[] retval = new ParameterInfo [parameters.Length];
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for (int i = 0; i < parameters.Length; i++) {
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retval [i] = RuntimeParameterInfo.New (pinfo?[i + 1], parameters [i], this, i + 1);
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}
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return retval;
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}
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internal override int GetParametersCount ()
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{
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if (parameters == null)
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return 0;
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return parameters.Length;
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}
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internal override Type GetParameterType (int pos) {
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return parameters [pos];
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}
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internal MethodBase RuntimeResolve () {
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return type.RuntimeResolve ().GetMethod (this);
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}
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public Module GetModule ()
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{
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return type.Module;
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}
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public void CreateMethodBody (byte[] il, int count)
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{
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if ((il != null) && ((count < 0) || (count > il.Length)))
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throw new ArgumentOutOfRangeException ("Index was out of range. Must be non-negative and less than the size of the collection.");
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if ((code != null) || type.is_created)
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throw new InvalidOperationException ("Type definition of the method is complete.");
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if (il == null)
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code = null;
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else {
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code = new byte [count];
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System.Array.Copy(il, code, count);
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}
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}
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public void SetMethodBody (byte[] il, int maxStack, byte[] localSignature,
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IEnumerable<ExceptionHandler> exceptionHandlers, IEnumerable<int> tokenFixups)
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{
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var ilgen = GetILGenerator ();
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ilgen.Init (il, maxStack, localSignature, exceptionHandlers, tokenFixups);
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}
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public override Object Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
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{
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throw NotSupported ();
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}
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public override bool IsDefined (Type attributeType, bool inherit)
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{
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throw NotSupported ();
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}
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public override object[] GetCustomAttributes (bool inherit)
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{
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/*
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* On MS.NET, this always returns not_supported, but we can't do this
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* since there would be no way to obtain custom attributes of
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* dynamically created ctors.
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*/
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if (type.is_created)
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return MonoCustomAttrs.GetCustomAttributes (this, inherit);
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else
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throw NotSupported ();
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}
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public override object[] GetCustomAttributes (Type attributeType, bool inherit)
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{
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if (type.is_created)
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return MonoCustomAttrs.GetCustomAttributes (this, attributeType, inherit);
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else
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throw NotSupported ();
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}
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public ILGenerator GetILGenerator ()
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{
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return GetILGenerator (64);
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}
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public ILGenerator GetILGenerator (int size)
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{
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if (((iattrs & MethodImplAttributes.CodeTypeMask) !=
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MethodImplAttributes.IL) ||
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((iattrs & MethodImplAttributes.ManagedMask) !=
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MethodImplAttributes.Managed))
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throw new InvalidOperationException ("Method body should not exist.");
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if (ilgen != null)
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return ilgen;
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ilgen = new ILGenerator (type.Module, ((ModuleBuilder)type.Module).GetTokenGenerator (), size);
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return ilgen;
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}
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public ParameterBuilder DefineParameter (int position, ParameterAttributes attributes, string strParamName)
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{
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RejectIfCreated ();
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//
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// Extension: Mono allows position == 0 for the return attribute
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//
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if ((position < 0) || parameters == null || (position > parameters.Length))
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throw new ArgumentOutOfRangeException ("position");
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ParameterBuilder pb = new ParameterBuilder (this, position, attributes, strParamName);
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if (pinfo == null)
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pinfo = new ParameterBuilder [parameters.Length + 1];
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pinfo [position] = pb;
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return pb;
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}
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internal void check_override ()
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{
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if (override_methods != null) {
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foreach (var m in override_methods) {
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if (m.IsVirtual && !IsVirtual)
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throw new TypeLoadException (String.Format("Method '{0}' override '{1}' but it is not virtual", name, m));
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}
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}
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}
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internal void fixup ()
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{
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if (((attrs & (MethodAttributes.Abstract | MethodAttributes.PinvokeImpl)) == 0) && ((iattrs & (MethodImplAttributes.Runtime | MethodImplAttributes.InternalCall)) == 0)) {
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// do not allow zero length method body on MS.NET 2.0 (and higher)
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if (((ilgen == null) || (ilgen.ILOffset == 0)) && (code == null || code.Length == 0))
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throw new InvalidOperationException (
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String.Format ("Method '{0}.{1}' does not have a method body.",
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DeclaringType.FullName, Name));
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}
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if (ilgen != null)
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ilgen.label_fixup (this);
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}
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internal void ResolveUserTypes () {
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rtype = TypeBuilder.ResolveUserType (rtype);
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TypeBuilder.ResolveUserTypes (parameters);
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TypeBuilder.ResolveUserTypes (returnModReq);
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TypeBuilder.ResolveUserTypes (returnModOpt);
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if (paramModReq != null) {
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foreach (var types in paramModReq)
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TypeBuilder.ResolveUserTypes (types);
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}
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if (paramModOpt != null) {
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foreach (var types in paramModOpt)
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TypeBuilder.ResolveUserTypes (types);
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}
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}
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internal void FixupTokens (Dictionary<int, int> token_map, Dictionary<int, MemberInfo> member_map) {
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if (ilgen != null)
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ilgen.FixupTokens (token_map, member_map);
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}
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internal void GenerateDebugInfo (ISymbolWriter symbolWriter)
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{
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if (ilgen != null && ilgen.HasDebugInfo) {
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SymbolToken token = new SymbolToken (GetToken().Token);
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symbolWriter.OpenMethod (token);
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symbolWriter.SetSymAttribute (token, "__name", System.Text.Encoding.UTF8.GetBytes (Name));
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ilgen.GenerateDebugInfo (symbolWriter);
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symbolWriter.CloseMethod ();
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}
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}
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public void SetCustomAttribute (CustomAttributeBuilder customBuilder)
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{
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if (customBuilder == null)
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throw new ArgumentNullException ("customBuilder");
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switch (customBuilder.Ctor.ReflectedType.FullName) {
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case "System.Runtime.CompilerServices.MethodImplAttribute":
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byte[] data = customBuilder.Data;
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int impla; // the (stupid) ctor takes a short or an int ...
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impla = (int)data [2];
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impla |= ((int)data [3]) << 8;
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iattrs |= (MethodImplAttributes)impla;
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return;
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case "System.Runtime.InteropServices.DllImportAttribute":
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CustomAttributeBuilder.CustomAttributeInfo attr = CustomAttributeBuilder.decode_cattr (customBuilder);
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bool preserveSig = true;
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/*
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* It would be easier to construct a DllImportAttribute from
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* the custom attribute builder, but the DllImportAttribute
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* does not contain all the information required here, ie.
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* - some parameters, like BestFitMapping has three values
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* ("on", "off", "missing"), but DllImportAttribute only
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* contains two (on/off).
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* - PreserveSig is true by default, while it is false by
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* default in DllImportAttribute.
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*/
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pi_dll = (string)attr.ctorArgs[0];
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if (pi_dll == null || pi_dll.Length == 0)
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throw new ArgumentException ("DllName cannot be empty");
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native_cc = System.Runtime.InteropServices.CallingConvention.Winapi;
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for (int i = 0; i < attr.namedParamNames.Length; ++i) {
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string name = attr.namedParamNames [i];
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object value = attr.namedParamValues [i];
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if (name == "CallingConvention")
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native_cc = (CallingConvention)value;
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else if (name == "CharSet")
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charset = (CharSet)value;
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else if (name == "EntryPoint")
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pi_entry = (string)value;
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else if (name == "ExactSpelling")
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ExactSpelling = (bool)value;
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else if (name == "SetLastError")
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SetLastError = (bool)value;
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else if (name == "PreserveSig")
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preserveSig = (bool)value;
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else if (name == "BestFitMapping")
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BestFitMapping = (bool)value;
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else if (name == "ThrowOnUnmappableChar")
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ThrowOnUnmappableChar = (bool)value;
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}
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attrs |= MethodAttributes.PinvokeImpl;
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if (preserveSig)
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iattrs |= MethodImplAttributes.PreserveSig;
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return;
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case "System.Runtime.InteropServices.PreserveSigAttribute":
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iattrs |= MethodImplAttributes.PreserveSig;
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return;
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|
case "System.Runtime.CompilerServices.SpecialNameAttribute":
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attrs |= MethodAttributes.SpecialName;
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return;
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case "System.Security.SuppressUnmanagedCodeSecurityAttribute":
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attrs |= MethodAttributes.HasSecurity;
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break;
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}
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if (cattrs != null) {
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CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
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cattrs.CopyTo (new_array, 0);
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new_array [cattrs.Length] = customBuilder;
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cattrs = new_array;
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} else {
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cattrs = new CustomAttributeBuilder [1];
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cattrs [0] = customBuilder;
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}
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}
|
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|
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[ComVisible (true)]
|
|
public void SetCustomAttribute (ConstructorInfo con, byte[] binaryAttribute)
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|
{
|
|
if (con == null)
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throw new ArgumentNullException ("con");
|
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if (binaryAttribute == null)
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throw new ArgumentNullException ("binaryAttribute");
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SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
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}
|
|
|
|
public void SetImplementationFlags (MethodImplAttributes attributes)
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{
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RejectIfCreated ();
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iattrs = attributes;
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}
|
|
|
|
public void AddDeclarativeSecurity (SecurityAction action, PermissionSet pset)
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|
{
|
|
#if !MOBILE
|
|
if (pset == null)
|
|
throw new ArgumentNullException ("pset");
|
|
if ((action == SecurityAction.RequestMinimum) ||
|
|
(action == SecurityAction.RequestOptional) ||
|
|
(action == SecurityAction.RequestRefuse))
|
|
throw new ArgumentOutOfRangeException ("Request* values are not permitted", "action");
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|
|
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;
|
|
#endif
|
|
}
|
|
|
|
[Obsolete ("An alternate API is available: Emit the MarshalAs custom attribute instead.")]
|
|
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, int count)
|
|
{
|
|
return type.get_next_table_index (obj, table, count);
|
|
}
|
|
|
|
void ExtendArray<T> (ref T[] array, T elem) {
|
|
if (array == null) {
|
|
array = new T [1];
|
|
} else {
|
|
var newa = new T [array.Length + 1];
|
|
Array.Copy (array, newa, array.Length);
|
|
array = newa;
|
|
}
|
|
array [array.Length - 1] = elem;
|
|
}
|
|
|
|
internal void set_override (MethodInfo mdecl)
|
|
{
|
|
ExtendArray<MethodInfo> (ref override_methods, 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.");
|
|
}
|
|
|
|
public override MethodInfo MakeGenericMethod (params Type [] typeArguments)
|
|
{
|
|
if (!IsGenericMethodDefinition)
|
|
throw new InvalidOperationException ("Method is not a generic method definition");
|
|
if (typeArguments == null)
|
|
throw new ArgumentNullException ("typeArguments");
|
|
if (generic_params.Length != typeArguments.Length)
|
|
throw new ArgumentException ("Incorrect length", "typeArguments");
|
|
foreach (Type type in typeArguments) {
|
|
if (type == null)
|
|
throw new ArgumentNullException ("typeArguments");
|
|
}
|
|
|
|
return new MethodOnTypeBuilderInst (this, typeArguments);
|
|
}
|
|
|
|
public override bool IsGenericMethodDefinition {
|
|
get {
|
|
return generic_params != null;
|
|
}
|
|
}
|
|
|
|
public override bool IsGenericMethod {
|
|
get {
|
|
return generic_params != null;
|
|
}
|
|
}
|
|
|
|
public override MethodInfo GetGenericMethodDefinition ()
|
|
{
|
|
if (!IsGenericMethodDefinition)
|
|
throw new InvalidOperationException ();
|
|
|
|
return this;
|
|
}
|
|
|
|
public override Type[] GetGenericArguments ()
|
|
{
|
|
if (generic_params == null)
|
|
return null;
|
|
|
|
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)
|
|
{
|
|
if (names == null)
|
|
throw new ArgumentNullException ("names");
|
|
if (names.Length == 0)
|
|
throw new ArgumentException ("names");
|
|
|
|
generic_params = new GenericTypeParameterBuilder [names.Length];
|
|
for (int i = 0; i < names.Length; i++) {
|
|
string item = names [i];
|
|
if (item == null)
|
|
throw new ArgumentNullException ("names");
|
|
generic_params [i] = new GenericTypeParameterBuilder (type, this, item, i);
|
|
}
|
|
|
|
return generic_params;
|
|
}
|
|
|
|
public void SetReturnType (Type returnType)
|
|
{
|
|
rtype = returnType;
|
|
}
|
|
|
|
public void SetParameters (params Type[] parameterTypes)
|
|
{
|
|
if (parameterTypes != null) {
|
|
for (int i = 0; i < parameterTypes.Length; ++i)
|
|
if (parameterTypes [i] == null)
|
|
throw new ArgumentException ("Elements of the parameterTypes array cannot be null", "parameterTypes");
|
|
|
|
this.parameters = new Type [parameterTypes.Length];
|
|
System.Array.Copy (parameterTypes, this.parameters, parameterTypes.Length);
|
|
}
|
|
}
|
|
|
|
public void SetSignature (Type returnType, Type[] returnTypeRequiredCustomModifiers, Type[] returnTypeOptionalCustomModifiers, Type[] parameterTypes, Type[][] parameterTypeRequiredCustomModifiers, Type[][] parameterTypeOptionalCustomModifiers)
|
|
{
|
|
SetReturnType (returnType);
|
|
SetParameters (parameterTypes);
|
|
this.returnModReq = returnTypeRequiredCustomModifiers;
|
|
this.returnModOpt = returnTypeOptionalCustomModifiers;
|
|
this.paramModReq = parameterTypeRequiredCustomModifiers;
|
|
this.paramModOpt = parameterTypeOptionalCustomModifiers;
|
|
}
|
|
|
|
public override Module Module {
|
|
get {
|
|
return GetModule ();
|
|
}
|
|
}
|
|
|
|
public override ParameterInfo ReturnParameter {
|
|
get { return base.ReturnParameter; }
|
|
}
|
|
}
|
|
}
|
|
#endif
|