1.. title:: clang-tidy - objc-property-declaration 2 3objc-property-declaration 4========================= 5 6Finds property declarations in Objective-C files that do not follow the pattern 7of property names in Apple's programming guide. The property name should be 8in the format of Lower Camel Case. 9 10For code: 11 12.. code-block:: objc 13 14 @property(nonatomic, assign) int LowerCamelCase; 15 16The fix will be: 17 18.. code-block:: objc 19 20 @property(nonatomic, assign) int lowerCamelCase; 21 22The check will only fix 'CamelCase' to 'camelCase'. In some other cases we will 23only provide warning messages since the property name could be complicated. 24Users will need to come up with a proper name by their own. 25 26This check also accepts special acronyms as prefixes or suffixes. Such prefixes or suffixes 27will suppress the Lower Camel Case check according to the guide: 28https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/CodingGuidelines/Articles/NamingBasics.html#//apple_ref/doc/uid/20001281-1002931-BBCFHEAB 29 30For a full list of well-known acronyms: 31https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/CodingGuidelines/Articles/APIAbbreviations.html#//apple_ref/doc/uid/20001285-BCIHCGAE 32 33The corresponding style rule: https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/CodingGuidelines/Articles/NamingIvarsAndTypes.html#//apple_ref/doc/uid/20001284-1001757 34 35The check will also accept property declared in category with a prefix of 36lowercase letters followed by a '_' to avoid naming conflict. For example: 37 38.. code-block:: objc 39 40 @property(nonatomic, assign) int abc_lowerCamelCase; 41 42The corresponding style rule: https://developer.apple.com/library/content/qa/qa1908/_index.html 43