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Added convenience categories to create deeply mutable copies of colle…
…ctions. This is very useful when applying patches to (non-mutable) collections.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| // | ||
| // JSONDeeplyMutable.h | ||
| // JSONTools | ||
| // | ||
| // Copyright (C) 2014 Gregory Combs [gcombs at gmail] | ||
| // See LICENSE.txt for details. | ||
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| @import Foundation; | ||
| #import "NSArray+JSONDeepMutable.h" | ||
| #import "NSDictionary+JSONDeepMutable.h" | ||
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| @interface JSONDeepMutable : NSObject | ||
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| /** | ||
| * @private | ||
| * Use the NSArray+JSONDeepMutable and NSDictionary+JSONDeepMutable | ||
| * categories instead. This is an intern implementation that only operates | ||
| * on one instance of a container's content. Throws an exception if any | ||
| * interior value objects aren't copyable in some way. This method | ||
| * prefers NSMutableCopying over NSCopying whenever possible. | ||
| * | ||
| * @param oldValue A value object to (mutably) copy. | ||
| * | ||
| * @return A (mutable) copy of the object. | ||
| */ | ||
| + (id)copyAsDeeplyMutableValue:(id)oldValue; | ||
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|
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| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| // | ||
| // JSONDeeplyMutable.m | ||
| // JSONTools | ||
| // | ||
| // Copyright (C) 2014 Gregory Combs [gcombs at gmail] | ||
| // See LICENSE.txt for details. | ||
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| #import "JSONDeeplyMutable.h" | ||
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| @implementation JSONDeepMutable | ||
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| + (id)copyAsDeeplyMutableValue:(id)oldValue | ||
| { | ||
| id newCopy = nil; | ||
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| if ([oldValue respondsToSelector: @selector(copyAsDeeplyMutableJSON)]) | ||
| { | ||
| newCopy = [oldValue copyAsDeeplyMutableJSON]; | ||
| } | ||
| else if ([oldValue conformsToProtocol:@protocol(NSMutableCopying)]) | ||
| { | ||
| newCopy = [oldValue mutableCopy]; | ||
| } | ||
| else if ([oldValue conformsToProtocol:@protocol(NSCopying)]) | ||
| { | ||
| newCopy = [oldValue copy]; | ||
| } | ||
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| if (!newCopy) | ||
| { | ||
| [NSException raise:NSDestinationInvalidException format:@"Object is not mutable or copyable: %@", oldValue]; | ||
| } | ||
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| return newCopy; | ||
| } | ||
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| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| // | ||
| // NSArray+JSONDeepMutable.h | ||
| // JSONTools | ||
| // | ||
| // Copyright (C) 2014 Gregory Combs [gcombs at gmail] | ||
| // See LICENSE.txt for details. | ||
|
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| @import Foundation; | ||
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| @interface NSArray (JSONDeepMutable) | ||
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| /** | ||
| * Recurses into the receiver's contents and makes a (mutable) copy of each value it encounters. | ||
| * Throws an exception if any interior value objects aren't copyable in some way. This method | ||
| * prefers NSMutableCopying over NSCopying whenever possible. | ||
| * | ||
| * @return A deeply mutable copy of the receiver's contents. | ||
| */ | ||
| - (NSMutableArray *)copyAsDeeplyMutableJSON; | ||
|
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| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| // | ||
| // NSArray+JSONDeepMutable.m | ||
| // JSONTools | ||
| // | ||
| // Copyright (C) 2014 Gregory Combs [gcombs at gmail] | ||
| // See LICENSE.txt for details. | ||
|
|
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| #import "NSArray+JSONDeepMutable.h" | ||
| #import "JSONDeeplyMutable.h" | ||
|
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| @implementation NSArray (JSONDeepMutable) | ||
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| - (NSMutableArray *)copyAsDeeplyMutableJSON | ||
| { | ||
| NSMutableArray* ret = [[NSMutableArray alloc] initWithCapacity: [self count]]; | ||
| for (id oldValue in self) | ||
| { | ||
| id newCopy = [JSONDeepMutable copyAsDeeplyMutableValue:oldValue]; | ||
| if (newCopy) | ||
| { | ||
| [ret addObject:newCopy]; | ||
| } | ||
| } | ||
| return ret; | ||
| } | ||
|
|
||
| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| // | ||
| // NSDictionary+JSONDeepMutable.h | ||
| // JSONTools | ||
| // | ||
| // Copyright (C) 2014 Gregory Combs [gcombs at gmail] | ||
| // See LICENSE.txt for details. | ||
|
|
||
| @import Foundation; | ||
|
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| @interface NSDictionary (JSONDeepMutable) | ||
|
|
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| /** | ||
| * Recurses into the receiver's contents and makes a (mutable) copy of each value it encounters. | ||
| * Throws an exception if any interior value objects aren't copyable in some way. This method | ||
| * prefers NSMutableCopying over NSCopying whenever possible. | ||
| * | ||
| * @return A deeply mutable copy of the receiver's contents. | ||
| */ | ||
| - (NSMutableDictionary *)copyAsDeeplyMutableJSON; | ||
|
|
||
| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| // | ||
| // NSDictionary+JSONDeepMutable.m | ||
| // JSONTools | ||
| // | ||
| // Copyright (C) 2014 Gregory Combs [gcombs at gmail] | ||
| // See LICENSE.txt for details. | ||
|
|
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| #import "NSDictionary+JSONDeepMutable.h" | ||
| #import "JSONDeeplyMutable.h" | ||
|
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| @implementation NSDictionary (JSONDeepMutable) | ||
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| - (NSMutableDictionary *)copyAsDeeplyMutableJSON | ||
| { | ||
| NSMutableDictionary * ret = [[NSMutableDictionary alloc] initWithCapacity:[self count]]; | ||
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| [self enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) { | ||
| id newCopy = [JSONDeepMutable copyAsDeeplyMutableValue:obj]; | ||
| if (newCopy) | ||
| { | ||
| ret[key] = newCopy; | ||
| } | ||
| }]; | ||
|
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| return ret; | ||
| } | ||
|
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| @end |
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