/IronPython_Main/Runtime/Microsoft.Dynamic/Generation/MethodSignatureInfo.cs
C# | 68 lines | 40 code | 10 blank | 18 comment | 11 complexity | 7ece7409d191dd294066176767dad4f9 MD5 | raw file
Possible License(s): GPL-2.0, MPL-2.0-no-copyleft-exception, CPL-1.0, CC-BY-SA-3.0, BSD-3-Clause, ISC, AGPL-3.0, LGPL-2.1, Apache-2.0
- /* ****************************************************************************
- *
- * Copyright (c) Microsoft Corporation.
- *
- * This source code is subject to terms and conditions of the Apache License, Version 2.0. A
- * copy of the license can be found in the License.html file at the root of this distribution. If
- * you cannot locate the Apache License, Version 2.0, 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 Apache License, Version 2.0.
- *
- * You must not remove this notice, or any other, from this software.
- *
- *
- * ***************************************************************************/
-
- using System.Reflection;
- using Microsoft.Contracts;
-
- namespace Microsoft.Scripting.Generation {
- /// <summary>
- /// Helper class to remove methods w/ identical signatures. Used for GetDefaultMembers
- /// which returns members from all types in the hierarchy.
- /// </summary>
- public class MethodSignatureInfo {
- private readonly ParameterInfo[] _pis;
- private readonly bool _isStatic;
- private readonly int _genericArity;
-
- public MethodSignatureInfo(MethodInfo info)
- : this(info.IsStatic, info.GetParameters(), info.IsGenericMethodDefinition ? info.GetGenericArguments().Length : 0){
- }
-
- public MethodSignatureInfo(bool isStatic, ParameterInfo[] pis, int genericArity) {
- _isStatic = isStatic;
- _pis = pis;
- _genericArity = genericArity;
- }
-
- [Confined]
- public override bool Equals(object obj) {
- MethodSignatureInfo args = obj as MethodSignatureInfo;
- if (args == null) return false;
-
- if (args._isStatic != _isStatic || args._pis.Length != _pis.Length || args._genericArity != _genericArity) {
- return false;
- }
-
- for (int i = 0; i < _pis.Length; i++) {
- ParameterInfo self = _pis[i];
- ParameterInfo other = args._pis[i];
-
- if (self.ParameterType != other.ParameterType)
- return false;
- }
-
- return true;
- }
-
- [Confined]
- public override int GetHashCode() {
- int hash = 6551 ^ (_isStatic ? 79234 : 3123) ^ _genericArity;
- foreach (ParameterInfo pi in _pis) {
- hash ^= pi.ParameterType.GetHashCode();
- }
- return hash;
- }
- }
- }