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C# NamedTypeSymbol.IsExpressionTree方法代码示例

本文整理汇总了C#中Microsoft.CodeAnalysis.CSharp.Symbols.NamedTypeSymbol.IsExpressionTree方法的典型用法代码示例。如果您正苦于以下问题:C# NamedTypeSymbol.IsExpressionTree方法的具体用法?C# NamedTypeSymbol.IsExpressionTree怎么用?C# NamedTypeSymbol.IsExpressionTree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Microsoft.CodeAnalysis.CSharp.Symbols.NamedTypeSymbol的用法示例。


在下文中一共展示了NamedTypeSymbol.IsExpressionTree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: IsAnonymousFunctionCompatibleWithExpressionTree

        private static LambdaConversionResult IsAnonymousFunctionCompatibleWithExpressionTree(UnboundLambda anonymousFunction, NamedTypeSymbol type)
        {
            Debug.Assert((object)anonymousFunction != null);
            Debug.Assert((object)type != null);
            Debug.Assert(type.IsExpressionTree());

            // SPEC OMISSION:
            // 
            // The C# 3 spec said that anonymous methods and statement lambdas are *convertible* to expression tree
            // types if the anonymous method/statement lambda is convertible to its delegate type; however, actually
            // *using* such a conversion is an error. However, that is not what we implemented. In C# 3 we implemented
            // that an anonymous method is *not convertible* to an expression tree type, period. (Statement lambdas
            // used the rule described in the spec.)  
            //
            // This appears to be a spec omission; the intention is to make old-style anonymous methods not 
            // convertible to expression trees.

            var delegateType = type.TypeArgumentsNoUseSiteDiagnostics[0];
            if (!delegateType.IsDelegateType())
            {
                return LambdaConversionResult.ExpressionTreeMustHaveDelegateTypeArgument;
            }

            if (anonymousFunction.Syntax.Kind == SyntaxKind.AnonymousMethodExpression)
            {
                return LambdaConversionResult.ExpressionTreeFromAnonymousMethod;
            }

            return IsAnonymousFunctionCompatibleWithDelegate(anonymousFunction, delegateType);
        }
开发者ID:modulexcite,项目名称:pattern-matching-csharp,代码行数:30,代码来源:Conversions.cs


注:本文中的Microsoft.CodeAnalysis.CSharp.Symbols.NamedTypeSymbol.IsExpressionTree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。