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C# TypeInfo.IsRuntimeImplemented方法代码示例

本文整理汇总了C#中System.Reflection.TypeInfo.IsRuntimeImplemented方法的典型用法代码示例。如果您正苦于以下问题:C# TypeInfo.IsRuntimeImplemented方法的具体用法?C# TypeInfo.IsRuntimeImplemented怎么用?C# TypeInfo.IsRuntimeImplemented使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在System.Reflection.TypeInfo的用法示例。


在下文中一共展示了TypeInfo.IsRuntimeImplemented方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: IsAssignableFrom

        public sealed override bool IsAssignableFrom(TypeInfo typeInfo)
        {
            RuntimeTypeInfo toTypeInfo = this;

            if (typeInfo == null || !typeInfo.IsRuntimeImplemented())
                return false;  // Desktop compat: If typeInfo is null, or implemented by a different Reflection implementation, return "false."

            RuntimeTypeInfo fromTypeInfo = typeInfo.CastToRuntimeTypeInfo();

            if (toTypeInfo.Equals(fromTypeInfo))
                return true;

            RuntimeTypeHandle toTypeHandle = toTypeInfo.InternalTypeHandleIfAvailable;
            RuntimeTypeHandle fromTypeHandle = fromTypeInfo.InternalTypeHandleIfAvailable;
            bool haveTypeHandles = !(toTypeHandle.IsNull() || fromTypeHandle.IsNull());
            if (haveTypeHandles)
            {
                // If both types have type handles, let MRT handle this. It's not dependent on metadata.
                if (ReflectionCoreExecution.ExecutionEnvironment.IsAssignableFrom(toTypeHandle, fromTypeHandle))
                    return true;

                // Runtime IsAssignableFrom does not handle casts from generic type definitions: always returns false. For those, we fall through to the 
                // managed implementation. For everyone else, return "false".
                //
                // Runtime IsAssignableFrom does not handle pointer -> UIntPtr cast.
                if (!(fromTypeInfo.IsGenericTypeDefinition || fromTypeInfo.IsPointer))
                    return false;
            }

            // If we got here, the types are open, or reduced away, or otherwise lacking in type handles. Perform the IsAssignability check in managed code.
            return Assignability.IsAssignableFrom(this, typeInfo, ReflectionCoreExecution.ExecutionDomain.FoundationTypes);
        }
开发者ID:BruceForstall,项目名称:corert,代码行数:32,代码来源:RuntimeTypeInfo.cs


注:本文中的System.Reflection.TypeInfo.IsRuntimeImplemented方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。