435 lines
14 KiB
C#
435 lines
14 KiB
C#
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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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//
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// System.Reflection.Emit/SignatureHelper.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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#if !FULL_AOT_RUNTIME
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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.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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namespace System.Reflection.Emit {
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[ComVisible (true)]
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[ComDefaultInterface (typeof (_SignatureHelper))]
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[ClassInterface (ClassInterfaceType.None)]
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[StructLayout (LayoutKind.Sequential)]
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public sealed class SignatureHelper : _SignatureHelper {
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internal enum SignatureHelperType {
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HELPER_FIELD,
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HELPER_LOCAL,
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HELPER_METHOD,
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HELPER_PROPERTY
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}
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private ModuleBuilder module; // can be null in 2.0
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private Type[] arguments;
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private SignatureHelperType type;
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private Type returnType;
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private CallingConventions callConv;
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private CallingConvention unmanagedCallConv;
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#pragma warning disable 649
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private Type[][] modreqs;
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private Type[][] modopts;
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#pragma warning restore 649
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internal SignatureHelper (ModuleBuilder module, SignatureHelperType type)
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{
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this.type = type;
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this.module = module;
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}
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public static SignatureHelper GetFieldSigHelper (Module mod)
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{
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if (mod != null && !(mod is ModuleBuilder))
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throw new ArgumentException ("ModuleBuilder is expected");
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return new SignatureHelper ((ModuleBuilder) mod, SignatureHelperType.HELPER_FIELD);
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}
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public static SignatureHelper GetLocalVarSigHelper (Module mod)
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{
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if (mod != null && !(mod is ModuleBuilder))
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throw new ArgumentException ("ModuleBuilder is expected");
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return new SignatureHelper ((ModuleBuilder) mod, SignatureHelperType.HELPER_LOCAL);
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}
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public static SignatureHelper GetLocalVarSigHelper ()
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{
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return new SignatureHelper (null, SignatureHelperType.HELPER_LOCAL);
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}
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public static SignatureHelper GetMethodSigHelper (CallingConventions callingConvention, Type returnType)
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{
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return GetMethodSigHelper (null, callingConvention, (CallingConvention)0, returnType, null);
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}
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public static SignatureHelper GetMethodSigHelper (CallingConvention unmanagedCallingConvention, Type returnType)
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{
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return GetMethodSigHelper (null, CallingConventions.Standard, unmanagedCallingConvention, returnType, null);
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}
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public static SignatureHelper GetMethodSigHelper (Module mod, CallingConventions callingConvention, Type returnType)
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{
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return GetMethodSigHelper (mod, callingConvention, (CallingConvention)0, returnType, null);
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}
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public static SignatureHelper GetMethodSigHelper (Module mod, CallingConvention unmanagedCallConv, Type returnType)
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{
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return GetMethodSigHelper (mod, CallingConventions.Standard, unmanagedCallConv, returnType, null);
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}
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public static SignatureHelper GetMethodSigHelper (Module mod, Type returnType, Type[] parameterTypes)
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{
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return GetMethodSigHelper (mod, CallingConventions.Standard, (CallingConvention)0, returnType, parameterTypes);
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}
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[MonoTODO("Not implemented")]
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public static SignatureHelper GetPropertySigHelper (Module mod, Type returnType, Type[] parameterTypes)
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{
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throw new NotImplementedException ();
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}
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[MonoTODO("Not implemented")]
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public static SignatureHelper GetPropertySigHelper (Module mod, Type returnType,
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Type [] requiredReturnTypeCustomModifiers,
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Type [] optionalReturnTypeCustomModifiers,
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Type [] parameterTypes,
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Type [] [] requiredParameterTypeCustomModifiers,
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Type [] [] optionalParameterTypeCustomModifiers)
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{
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throw new NotImplementedException ();
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}
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[MonoTODO("Not implemented")]
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public static SignatureHelper GetPropertySigHelper (Module mod,
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CallingConventions callingConvention,
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Type returnType,
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Type [] requiredReturnTypeCustomModifiers,
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Type [] optionalReturnTypeCustomModifiers,
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Type [] parameterTypes,
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Type [] [] requiredParameterTypeCustomModifiers,
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Type [] [] optionalParameterTypeCustomModifiers)
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{
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throw new NotImplementedException ();
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}
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//
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// Grows the given array, and returns the index where the element
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// was added
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//
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static int AppendArray (ref Type [] array, Type t)
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{
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if (array != null) {
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Type[] new_a = new Type [array.Length + 1];
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System.Array.Copy (array, new_a, array.Length);
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new_a [array.Length] = t;
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array = new_a;
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return array.Length-1;
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} else {
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array = new Type [1];
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array [0] = t;
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return 0;
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}
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}
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//
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// Appends the given type array @t into the @array passed at
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// position @pos. If there is no array, it gets created
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//
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// This allows adding data to a null array at position 5 for
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// example, creating 4 empty slots before the slot where @t
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// is stored.
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//
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//
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static void AppendArrayAt (ref Type [][] array, Type [] t, int pos)
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{
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int top = Math.Max (pos, array == null ? 0 : array.Length);
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Type[][] new_a = new Type [top+1][];
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if (array != null)
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System.Array.Copy (array, new_a, top);
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new_a [pos] = t;
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array = new_a;
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}
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static void ValidateParameterModifiers (string name, Type [] parameter_modifiers)
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{
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foreach (Type modifier in parameter_modifiers){
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if (modifier == null)
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throw new ArgumentNullException (name);
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if (modifier.IsArray)
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throw new ArgumentException (Locale.GetText ("Array type not permitted"), name);
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if (modifier.ContainsGenericParameters)
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throw new ArgumentException (Locale.GetText ("Open Generic Type not permitted"), name);
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}
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}
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static void ValidateCustomModifier (int n, Type [][] custom_modifiers, string name)
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{
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if (custom_modifiers == null)
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return;
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if (custom_modifiers.Length != n)
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throw new ArgumentException (
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Locale.GetText (
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String.Format ("Custom modifiers length `{0}' does not match the size of the arguments")));
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foreach (Type [] parameter_modifiers in custom_modifiers){
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if (parameter_modifiers == null)
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continue;
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ValidateParameterModifiers (name, parameter_modifiers);
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}
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}
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static Exception MissingFeature ()
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{
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throw new NotImplementedException ("Mono does not currently support setting modOpt/modReq through SignatureHelper");
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}
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[MonoTODO("Currently we ignore requiredCustomModifiers and optionalCustomModifiers")]
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public void AddArguments (Type[] arguments, Type[][] requiredCustomModifiers, Type[][] optionalCustomModifiers)
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{
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if (arguments == null)
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throw new ArgumentNullException ("arguments");
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// For now
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if (requiredCustomModifiers != null || optionalCustomModifiers != null){
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throw MissingFeature();
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}
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ValidateCustomModifier (arguments.Length, requiredCustomModifiers, "requiredCustomModifiers");
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ValidateCustomModifier (arguments.Length, optionalCustomModifiers, "optionalCustomModifiers");
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for (int i = 0; i < arguments.Length; i++){
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AddArgument (arguments [i],
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requiredCustomModifiers != null ? requiredCustomModifiers [i] : null,
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optionalCustomModifiers != null ? optionalCustomModifiers [i] : null);
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}
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}
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[MonoTODO ("pinned is ignored")]
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public void AddArgument (Type argument, bool pinned)
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{
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AddArgument (argument);
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}
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public void AddArgument (Type argument, Type [] requiredCustomModifiers, Type [] optionalCustomModifiers)
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{
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if (argument == null)
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throw new ArgumentNullException ("argument");
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if (requiredCustomModifiers != null)
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ValidateParameterModifiers ("requiredCustomModifiers", requiredCustomModifiers);
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if (optionalCustomModifiers != null)
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ValidateParameterModifiers ("optionalCustomModifiers", optionalCustomModifiers);
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int p = AppendArray (ref arguments, argument);
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if (requiredCustomModifiers != null)
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AppendArrayAt (ref modreqs, requiredCustomModifiers, p);
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if (optionalCustomModifiers != null)
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AppendArrayAt (ref modopts, optionalCustomModifiers, p);
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}
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public void AddArgument (Type clsArgument)
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{
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if (clsArgument == null)
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throw new ArgumentNullException ("clsArgument");
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AppendArray (ref arguments, clsArgument);
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}
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[MonoTODO("Not implemented")]
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public void AddSentinel ()
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{
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throw new NotImplementedException ();
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}
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static bool CompareOK (Type [][] one, Type [][] two)
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{
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if (one == null){
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if (two == null)
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return true;
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return false;
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} else if (two == null)
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return false;
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if (one.Length != two.Length)
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return false;
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for (int i = 0; i < one.Length; i++){
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Type [] tone = one [i];
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Type [] ttwo = two [i];
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if (tone == null){
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if (ttwo == null)
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continue;
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} else if (ttwo == null)
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return false;
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if (tone.Length != ttwo.Length)
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return false;
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for (int j = 0; j < tone.Length; j++){
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Type uone = tone [j];
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Type utwo = ttwo [j];
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if (uone == null){
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if (utwo == null)
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continue;
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return false;
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} else if (utwo == null)
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return false;
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if (!uone.Equals (utwo))
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return false;
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}
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}
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return true;
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}
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public override bool Equals (object obj)
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{
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SignatureHelper other = obj as SignatureHelper;
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if (other == null)
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return false;
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if (other.module != module ||
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other.returnType != returnType ||
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other.callConv != callConv ||
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other.unmanagedCallConv != unmanagedCallConv)
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return false;
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if (arguments != null){
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if (other.arguments == null)
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return false;
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if (arguments.Length != other.arguments.Length)
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return false;
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for (int i = 0; i < arguments.Length; i++)
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if (!other.arguments [i].Equals (arguments [i]))
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return false;
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} else if (other.arguments != null)
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return false;
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return CompareOK (other.modreqs, modreqs) && CompareOK (other.modopts, modopts);
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}
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public override int GetHashCode ()
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{
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// Lame, but easy, and will work, and chances are
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// you will only need a few of these.
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return 0;
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}
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[MethodImplAttribute(MethodImplOptions.InternalCall)]
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internal extern byte[] get_signature_local ();
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[MethodImplAttribute(MethodImplOptions.InternalCall)]
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internal extern byte[] get_signature_field ();
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public byte[] GetSignature ()
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{
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TypeBuilder.ResolveUserTypes (arguments);
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switch (type) {
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case SignatureHelperType.HELPER_LOCAL:
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return get_signature_local ();
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case SignatureHelperType.HELPER_FIELD:
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return get_signature_field ();
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default:
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throw new NotImplementedException ();
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}
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}
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public override string ToString() {
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return "SignatureHelper";
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}
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internal static SignatureHelper GetMethodSigHelper (Module mod, CallingConventions callingConvention, CallingConvention unmanagedCallingConvention, Type returnType,
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Type [] parameters)
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{
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if (mod != null && !(mod is ModuleBuilder))
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throw new ArgumentException ("ModuleBuilder is expected");
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if (returnType == null)
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returnType = typeof (void);
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if (returnType.IsUserType)
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throw new NotSupportedException ("User defined subclasses of System.Type are not yet supported.");
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if (parameters != null) {
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for (int i = 0; i < parameters.Length; ++i)
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if (parameters [i].IsUserType)
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throw new NotSupportedException ("User defined subclasses of System.Type are not yet supported.");
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}
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SignatureHelper helper =
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new SignatureHelper ((ModuleBuilder)mod, SignatureHelperType.HELPER_METHOD);
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helper.returnType = returnType;
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helper.callConv = callingConvention;
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helper.unmanagedCallConv = unmanagedCallingConvention;
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if (parameters != null) {
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helper.arguments = new Type [parameters.Length];
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for (int i = 0; i < parameters.Length; ++i)
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helper.arguments [i] = parameters [i];
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}
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return helper;
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}
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void _SignatureHelper.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 _SignatureHelper.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 _SignatureHelper.GetTypeInfoCount (out uint pcTInfo)
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{
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throw new NotImplementedException ();
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}
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void _SignatureHelper.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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}
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#endif
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