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Date:2011-03-08T23:02:42.000000Z git-svn-id: https://svn.eiffel.com/eiffel-org/trunk@839 abb3cda0-5349-4a8f-a601-0c33ac3a8c38
63 lines
1.9 KiB
Plaintext
63 lines
1.9 KiB
Plaintext
[[Property:title|eif_attribute]]
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[[Property:weight|-12]]
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[[Property:uuid|c843f272-8ac2-c30e-e71f-bd6c567e9de3]]
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==Synopsis==
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<code lang="text">
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#include "eif_cecil.h"
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EIFFEL_TYPE eif_attribute (EIF_REFERENCE object, char * name, EIFFEL_TYPE, int * status);
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</code>
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==Description==
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The <code lang="text">eif_attribute</code> macro returns the attribute of name <code lang="text">name</code>, which is of type <code lang="text">EIFFEL_TYPE</code>.
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<code lang="text">EIFFEL_TYPE</code> is the type of the Eiffel attribute. It can be one of the following:
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# <code lang="text">EIF_INTEGER</code>
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# <code lang="text">EIF_CHARACTER</code>
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# <code lang="text">EIF_BOOLEAN</code>
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# <code lang="text">EIF_DOUBLE</code>
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# <code lang="text">EIF_REAL</code>
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# <code lang="text">EIF_REFERENCE</code>
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If <code lang="text">status</code> is <code lang="text">NULL</code> then no status is set. Otherwise the status of the call is put into <code lang="text">*status</code>. Its value is one of the following:
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# <code lang="text">EIF_NO_ATTRIBUTE</code>
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# <code lang="text">EIF_CECIL_OK</code>
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If the visible exception is enabled, then a visible exception is raised upon failure (<code lang="text">EIF_NO_ATTRIBUTE</code>, <code lang="text">EIF_CECIL_ERROR</code>).
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==Return value==
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Successful: the Eiffel attribute.
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Failing: (<code lang="text">EIFFEL_TYPE</code>) 0
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==Notes==
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If the return value is an <code lang="text">EIF_REFERENCE</code>, you must protect it with [[eif_protect]].
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You cannot access a constant attribute, or the result of a once function with <code lang="text">eif_attribute</code>.
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==Conformance==
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ISE Eiffel 4.5 and later.
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==Compatibility==
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<code lang="text">
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eif_attribute (object, name, type, NULL)
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</code>
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is equivalent to:
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<code lang="text">
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eif_field (object, name, type)
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</code>
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which is deprecated.
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{{SeeAlso| <br/>
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[[eif_protect]]<br/>
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[[attribute_exists]]<br/>
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[[eif_procedure]]<br/>
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[[eif_reference_function]] }}
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