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Break out reused functions for object mapping introspection into RKOb…
…jectUtilities
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| // | ||
| // RKObjectUtilities.h | ||
| // RestKit | ||
| // | ||
| // Created by Blake Watters on 9/30/12. | ||
| // Copyright (c) 2012 RestKit. All rights reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // | ||
|
|
||
| #import <Foundation/Foundation.h> | ||
|
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||
| ///---------------- | ||
| /// @name Functions | ||
| ///---------------- | ||
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| /** | ||
| Returns a Boolean value that indicates whether the given objects are equal. | ||
| The actual method of comparison is dependendent upon the class of the objects given. For example, given two `NSString` objects equality would be tested using `isEqualToString:`. | ||
| @param object The first object to compare. | ||
| @param anotherObject The second object to compare. | ||
| @return `YES` if the objects are equal, otherwise `NO`. | ||
| */ | ||
| BOOL RKObjectIsEqualToObject(id object, id anotherObject); | ||
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| /** | ||
| Returns a Boolean value that indicates if the given class is a collection. | ||
| The following classes are considered collections: | ||
| 1. `NSSet` | ||
| 1. `NSArray` | ||
| 1. `NSOrderedSet` | ||
| `NSDictionary` objects are **not** considered collections as they are typically object representations. | ||
| @param aClass The class to check. | ||
| @return `YES` if the given class is a collection. | ||
| */ | ||
| BOOL RKClassIsCollection(Class aClass); | ||
|
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| /** | ||
| Returns a Boolean value that indicates if the given object is a collection. | ||
| Implemented by invoking `RKClassIsCollection` with the class of the given object. | ||
| @param object The object to be tested. | ||
| @return `YES` if the given object is a collection, else `NO`. | ||
| @see `RKClassIsCollection` | ||
| */ | ||
| BOOL RKObjectIsCollection(id object); | ||
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| /** | ||
| Returns a Boolean value that indicates if the given object is collection containing only instances of `NSManagedObject` or a class that inherits from `NSManagedObject`. | ||
| @param object The object to be tested. | ||
| @return `YES` if the object is a collection containing only `NSManagedObject` derived objects. | ||
| */ | ||
| BOOL RKObjectIsCollectionContainingOnlyManagedObjects(id object); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| // | ||
| // RKObjectUtilities.m | ||
| // RestKit | ||
| // | ||
| // Created by Blake Watters on 9/30/12. | ||
| // Copyright (c) 2012 RestKit. All rights reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // | ||
|
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| #import <objc/message.h> | ||
| #import "RKObjectUtilities.h" | ||
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| BOOL RKObjectIsEqualToObject(id object, id anotherObject) { | ||
| NSCAssert(object, @"Expected object not to be nil"); | ||
| NSCAssert(anotherObject, @"Expected anotherObject not to be nil"); | ||
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| SEL comparisonSelector; | ||
| if ([object isKindOfClass:[NSString class]] && [anotherObject isKindOfClass:[NSString class]]) { | ||
| comparisonSelector = @selector(isEqualToString:); | ||
| } else if ([object isKindOfClass:[NSNumber class]] && [anotherObject isKindOfClass:[NSNumber class]]) { | ||
| comparisonSelector = @selector(isEqualToNumber:); | ||
| } else if ([object isKindOfClass:[NSDate class]] && [anotherObject isKindOfClass:[NSDate class]]) { | ||
| comparisonSelector = @selector(isEqualToDate:); | ||
| } else if ([object isKindOfClass:[NSArray class]] && [anotherObject isKindOfClass:[NSArray class]]) { | ||
| comparisonSelector = @selector(isEqualToArray:); | ||
| } else if ([object isKindOfClass:[NSDictionary class]] && [anotherObject isKindOfClass:[NSDictionary class]]) { | ||
| comparisonSelector = @selector(isEqualToDictionary:); | ||
| } else if ([object isKindOfClass:[NSSet class]] && [anotherObject isKindOfClass:[NSSet class]]) { | ||
| comparisonSelector = @selector(isEqualToSet:); | ||
| } else { | ||
| comparisonSelector = @selector(isEqual:); | ||
| } | ||
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| // Comparison magic using function pointers. See this page for details: http://www.red-sweater.com/blog/320/abusing-objective-c-with-class | ||
| // Original code courtesy of Greg Parker | ||
| // This is necessary because isEqualToNumber will return negative integer values that aren't coercable directly to BOOL's without help [sbw] | ||
| BOOL (*ComparisonSender)(id, SEL, id) = (BOOL (*)(id, SEL, id))objc_msgSend; | ||
| return ComparisonSender(object, comparisonSelector, anotherObject); | ||
| } | ||
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| BOOL RKClassIsCollection(Class aClass) | ||
| { | ||
| return (aClass && ([aClass isSubclassOfClass:[NSSet class]] || | ||
| [aClass isSubclassOfClass:[NSArray class]] || | ||
| [aClass isSubclassOfClass:[NSOrderedSet class]])); | ||
| } | ||
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| BOOL RKObjectIsCollection(id object) | ||
| { | ||
| return RKClassIsCollection([object class]); | ||
| } | ||
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| BOOL RKObjectIsCollectionContainingOnlyManagedObjects(id object) | ||
| { | ||
| if (! RKObjectIsCollection(object)) return NO; | ||
| Class managedObjectClass = NSClassFromString(@"NSManagedObject"); | ||
| if (! managedObjectClass) return NO; | ||
| for (id instance in object) { | ||
| if (! [object isKindOfClass:managedObjectClass]) return NO; | ||
| } | ||
| return YES; | ||
| } |
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