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27 lines
2.4 KiB
Plaintext
27 lines
2.4 KiB
Plaintext
[[Property:title|Eiffel for .NET Compliance]]
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[[Property:weight|9]]
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[[Property:uuid|1e19c2f0-995e-02c1-0588-c134a11e0003]]
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As of Eiffel for ASP.NET 5.6 and EiffelStudio 5.7; Eiffel for .NET introduces the notion of '''Eiffel-Compliance'''. .NET specifies a number of language interoperability rules in a [http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cpconwhatiscommonlanguagespecification.asp Common Language Specification-Compliance] specification. Eiffel for .NET supports all CLS-Compliant type and features in .NET but now additionally supports a number of non-CLS-compliant types and features. This is the purpose of the Eiffel-Compliant notion.
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The information contained within this page does not go into any depth on the Common Language Specification (CLS) or CLS-Compliance. For this information please see Microsoft's on-line documentation [http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cpconwhatiscommonlanguagespecification.asp What is the Common Language Specification?]
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<span id="applicablity"></span>
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==Applicability==
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The CLS states a number of rules .NET tools have to abide by to be CLS-compliant. These rules relate to both a .NET producer, generally a compiler generating .NET code, and a consumer, which is generally a compiler that consumes .NET assemblies for reuse. Eiffel-Compliance relates only to consumption of .NET assemblies.
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<span id="what_is_compliant"></span>
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==What is Eiffel-Compliant?==
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As already stated, anything CLS-compliant is Eiffel-compliant. Eiffel-Compliancy merely allows for exceptions so that non-CLS-compliant assemblies, types and members can be used in Eiffel for .NET.
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The following list outlines the supported non-CLS-compliant types:
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* All unsigned numerical basic types such as <eiffel>System.UInt32</eiffel> as <eiffel>System.UInt64</eiffel>, represented by <eiffel>NATURAL_xx</eiffel>.
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* Native pointers (<eiffel>System.IntPtr</eiffel>), represented by <eiffel>POINTER</eiffel>
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Typically assemblies, types or members are marked with the <eiffel>System.CLSCompliantAttribute</eiffel> attribute to explicitly indicate if they are CLS-compliant or not. The Eiffel for .NET compiler will now ignore this attribute and instead infer if they are Eiffel-Compliant. With such an inference engine at hand, Eiffel for .NET opens itself up to extended support for COM/Legacy interop as well support assemblies not adhering to CLS-compliant rules, for one reason or another.
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