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/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Core / Microsoft / Scripting / Compiler / DelegateHelpers.Generated.cs / 1305376 / DelegateHelpers.Generated.cs
/* **************************************************************************** * * Copyright (c) Microsoft Corporation. * * This source code is subject to terms and conditions of the Microsoft Public License. A * copy of the license can be found in the License.html file at the root of this distribution. If * you cannot locate the Microsoft Public License, please send an email to * dlr@microsoft.com. By using this source code in any fashion, you are agreeing to be bound * by the terms of the Microsoft Public License. * * You must not remove this notice, or any other, from this software. * * * ***************************************************************************/ using System.Collections.Generic; using System.Collections.ObjectModel; using System.Diagnostics; using System.Dynamic; using System.Dynamic.Utils; using System.Runtime.CompilerServices; namespace System.Linq.Expressions.Compiler { internal static partial class DelegateHelpers { private static TypeInfo _DelegateCache = new TypeInfo(); #region Generated Maximum Delegate Arity // *** BEGIN GENERATED CODE *** // generated by function: gen_max_delegate_arity from: generate_dynsites.py private const int MaximumArity = 17; // *** END GENERATED CODE *** #endregion internal class TypeInfo { public Type DelegateType; public DictionaryTypeChain; public Type MakeDelegateType(Type retType, params Expression[] args) { return MakeDelegateType(retType, (IList )args); } public Type MakeDelegateType(Type retType, IList args) { // nope, go ahead and create it and spend the // cost of creating the array. Type[] paramTypes = new Type[args.Count + 2]; paramTypes[0] = typeof(CallSite); paramTypes[paramTypes.Length - 1] = retType; for (int i = 0; i < args.Count; i++) { paramTypes[i + 1] = args[i].Type; } return DelegateType = MakeNewDelegate(paramTypes); } } /// /// Finds a delegate type using the types in the array. /// We use the cache to avoid copying the array, and to cache the /// created delegate type /// internal static Type MakeDelegateType(Type[] types) { lock (_DelegateCache) { TypeInfo curTypeInfo = _DelegateCache; // arguments & return type for (int i = 0; i < types.Length; i++) { curTypeInfo = NextTypeInfo(types[i], curTypeInfo); } // see if we have the delegate already if (curTypeInfo.DelegateType == null) { // clone because MakeCustomDelegate can hold onto the array. curTypeInfo.DelegateType = MakeNewDelegate((Type[])types.Clone()); } return curTypeInfo.DelegateType; } } ////// Finds a delegate type for a CallSite using the types in the ReadOnlyCollection of Expression. /// /// We take the readonly collection of Expression explicitly to avoid allocating memory (an array /// of types) on lookup of delegate types. /// internal static Type MakeCallSiteDelegate(ReadOnlyCollectiontypes, Type returnType) { lock (_DelegateCache) { TypeInfo curTypeInfo = _DelegateCache; // CallSite curTypeInfo = NextTypeInfo(typeof(CallSite), curTypeInfo); // arguments for (int i = 0; i < types.Count; i++) { curTypeInfo = NextTypeInfo(types[i].Type, curTypeInfo); } // return type curTypeInfo = NextTypeInfo(returnType, curTypeInfo); // see if we have the delegate already if (curTypeInfo.DelegateType == null) { curTypeInfo.MakeDelegateType(returnType, types); } return curTypeInfo.DelegateType; } } /// /// Finds a delegate type for a CallSite using the MetaObject array. /// /// We take the array of MetaObject explicitly to avoid allocating memory (an array of types) on /// lookup of delegate types. /// internal static Type MakeDeferredSiteDelegate(DynamicMetaObject[] args, Type returnType) { lock (_DelegateCache) { TypeInfo curTypeInfo = _DelegateCache; // CallSite curTypeInfo = NextTypeInfo(typeof(CallSite), curTypeInfo); // arguments for (int i = 0; i < args.Length; i++) { DynamicMetaObject mo = args[i]; Type paramType = mo.Expression.Type; if (IsByRef(mo)) { paramType = paramType.MakeByRefType(); } curTypeInfo = NextTypeInfo(paramType, curTypeInfo); } // return type curTypeInfo = NextTypeInfo(returnType, curTypeInfo); // see if we have the delegate already if (curTypeInfo.DelegateType == null) { // nope, go ahead and create it and spend the // cost of creating the array. Type[] paramTypes = new Type[args.Length + 2]; paramTypes[0] = typeof(CallSite); paramTypes[paramTypes.Length - 1] = returnType; for (int i = 0; i < args.Length; i++) { DynamicMetaObject mo = args[i]; Type paramType = mo.Expression.Type; if (IsByRef(mo)) { paramType = paramType.MakeByRefType(); } paramTypes[i + 1] = paramType; } curTypeInfo.DelegateType = MakeNewDelegate(paramTypes); } return curTypeInfo.DelegateType; } } private static bool IsByRef(DynamicMetaObject mo) { ParameterExpression pe = mo.Expression as ParameterExpression; return pe != null && pe.IsByRef; } internal static TypeInfo NextTypeInfo(Type initialArg) { lock (_DelegateCache) { return NextTypeInfo(initialArg, _DelegateCache); } } internal static TypeInfo GetNextTypeInfo(Type initialArg, TypeInfo curTypeInfo) { lock (_DelegateCache) { return NextTypeInfo(initialArg, curTypeInfo); } } private static TypeInfo NextTypeInfo(Type initialArg, TypeInfo curTypeInfo) { Type lookingUp = initialArg; TypeInfo nextTypeInfo; if (curTypeInfo.TypeChain == null) { curTypeInfo.TypeChain = new Dictionary(); } if (!curTypeInfo.TypeChain.TryGetValue(lookingUp, out nextTypeInfo)) { nextTypeInfo = new TypeInfo(); if (TypeUtils.CanCache(lookingUp)) { curTypeInfo.TypeChain[lookingUp] = nextTypeInfo; } } return nextTypeInfo; } /// /// Creates a new delegate, or uses a func/action /// Note: this method does not cache /// [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Maintainability", "CA1502:AvoidExcessiveComplexity")] private static Type MakeNewDelegate(Type[] types) { Debug.Assert(types != null && types.Length > 0); // Can only used predefined delegates if we have no byref types and // the arity is small enough to fit in Func<...> or Action<...> if (types.Length > MaximumArity || types.Any(t => t.IsByRef)) { return MakeNewCustomDelegate(types); } Type result; if (types[types.Length - 1] == typeof(void)) { result = GetActionType(types.RemoveLast()); } else { result = GetFuncType(types); } Debug.Assert(result != null); return result; } internal static Type GetFuncType(Type[] types) { switch (types.Length) { #region Generated Delegate Func Types // *** BEGIN GENERATED CODE *** // generated by function: gen_delegate_func from: generate_dynsites.py case 1: return typeof(Func<>).MakeGenericType(types); case 2: return typeof(Func<,>).MakeGenericType(types); case 3: return typeof(Func<,,>).MakeGenericType(types); case 4: return typeof(Func<,,,>).MakeGenericType(types); case 5: return typeof(Func<,,,,>).MakeGenericType(types); case 6: return typeof(Func<,,,,,>).MakeGenericType(types); case 7: return typeof(Func<,,,,,,>).MakeGenericType(types); case 8: return typeof(Func<,,,,,,,>).MakeGenericType(types); case 9: return typeof(Func<,,,,,,,,>).MakeGenericType(types); case 10: return typeof(Func<,,,,,,,,,>).MakeGenericType(types); case 11: return typeof(Func<,,,,,,,,,,>).MakeGenericType(types); case 12: return typeof(Func<,,,,,,,,,,,>).MakeGenericType(types); case 13: return typeof(Func<,,,,,,,,,,,,>).MakeGenericType(types); case 14: return typeof(Func<,,,,,,,,,,,,,>).MakeGenericType(types); case 15: return typeof(Func<,,,,,,,,,,,,,,>).MakeGenericType(types); case 16: return typeof(Func<,,,,,,,,,,,,,,,>).MakeGenericType(types); case 17: return typeof(Func<,,,,,,,,,,,,,,,,>).MakeGenericType(types); // *** END GENERATED CODE *** #endregion default: return null; } } internal static Type GetActionType(Type[] types) { switch (types.Length) { case 0: return typeof(Action); #region Generated Delegate Action Types // *** BEGIN GENERATED CODE *** // generated by function: gen_delegate_action from: generate_dynsites.py case 1: return typeof(Action<>).MakeGenericType(types); case 2: return typeof(Action<,>).MakeGenericType(types); case 3: return typeof(Action<,,>).MakeGenericType(types); case 4: return typeof(Action<,,,>).MakeGenericType(types); case 5: return typeof(Action<,,,,>).MakeGenericType(types); case 6: return typeof(Action<,,,,,>).MakeGenericType(types); case 7: return typeof(Action<,,,,,,>).MakeGenericType(types); case 8: return typeof(Action<,,,,,,,>).MakeGenericType(types); case 9: return typeof(Action<,,,,,,,,>).MakeGenericType(types); case 10: return typeof(Action<,,,,,,,,,>).MakeGenericType(types); case 11: return typeof(Action<,,,,,,,,,,>).MakeGenericType(types); case 12: return typeof(Action<,,,,,,,,,,,>).MakeGenericType(types); case 13: return typeof(Action<,,,,,,,,,,,,>).MakeGenericType(types); case 14: return typeof(Action<,,,,,,,,,,,,,>).MakeGenericType(types); case 15: return typeof(Action<,,,,,,,,,,,,,,>).MakeGenericType(types); case 16: return typeof(Action<,,,,,,,,,,,,,,,>).MakeGenericType(types); // *** END GENERATED CODE *** #endregion default: return null; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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