Generate Extension Methods using System.CodeDom

依然范特西╮ 提交于 2019-12-19 03:19:35

问题


Has anyone ever tried to generate extension methods using System.CodeDom under .NET 4.0? There doesn't seem to be any way to specify a CodeMemberMethod or CodeParameterDeclarationExpression as being an extension method/parameter.

If this isn't possible, are there any good workarounds?

Thanks


回答1:


Apparently CodeDom isn't able to generate the correct code for the first parameter of an extension method, but you can cheat it like this:

var param = new CodeParameterDeclarationExpression("this string", "s");

It will blissfully ignore the fact that "this string" is not a valid type...




回答2:


See Extension Attribute

Quote:

In Visual Basic, you should use this attribute to create an extension method. For more information, see Extension Methods (Visual Basic).

In C#, you do not need to use this attribute; you should use the this (C# Reference) modifier for the first parameter to create an extension method. The compiler automatically emits ExtensionAttribute for extension methods. For more information, see Extension Methods (C# Programming Guide).

If you are writing a compiler that supports extension methods, your compiler should emit this attribute on each extension method and on each class and assembly that contains one or more extension methods.



来源:https://stackoverflow.com/questions/6011269/generate-extension-methods-using-system-codedom

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