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Allow MGSBreakpointDelegate to return breakpoints in an NSIndexSet.
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,22 @@ | ||
| // | ||
| // NSSet+Fragaria.h | ||
| // Fragaria | ||
| // | ||
| // Created by Daniele Cattaneo on 06/03/16. | ||
| // | ||
| /// @cond PRIVATE | ||
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| #import <Foundation/Foundation.h> | ||
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| /** This private category adds an utility initializer to NSSet. */ | ||
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| @interface NSSet (Fragaria) | ||
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| /** Returns an NSSet of those NSNumbers that are indexes of the specified | ||
| * index set. | ||
| * @param is An index set. */ | ||
| - (NSSet *)mgs_initWithIndexSet:(NSIndexSet *)is; | ||
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| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,147 @@ | ||
| // | ||
| // NSSet+Fragaria.m | ||
| // Fragaria | ||
| // | ||
| // Created by Daniele Cattaneo on 06/03/16. | ||
| // | ||
| // | ||
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| #import "NSSet+Fragaria.h" | ||
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| @interface MGSSetBackedByIndexSet: NSSet | ||
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| - (instancetype)initWithIndexSet:(NSIndexSet *)is; | ||
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| - (NSUInteger)count; | ||
| - (id)member:(id)obj; | ||
| - (NSEnumerator *)objectEnumerator; | ||
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| @end | ||
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| @interface MGSSetBackedByIndexSetEnumerator : NSEnumerator | ||
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| - (instancetype)initWithSet:(MGSSetBackedByIndexSet *)s; | ||
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| - (NSArray *)allObjects; | ||
| - (id)nextObject; | ||
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| @end | ||
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| @implementation MGSSetBackedByIndexSet | ||
| { | ||
| NSIndexSet *_backingStore; | ||
| } | ||
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| - (instancetype)initWithIndexSet:(NSIndexSet *)is | ||
| { | ||
| self = [super init]; | ||
| _backingStore = [is copy]; | ||
| return self; | ||
| } | ||
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| - (NSUInteger)count | ||
| { | ||
| return [_backingStore count]; | ||
| } | ||
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| - (id)member:(id)obj | ||
| { | ||
| if (![obj isKindOfClass:[NSNumber class]]) | ||
| return nil; | ||
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| /* Lowercase objCTypes correspond to signed values. */ | ||
| if (islower([obj objCType][0])) { | ||
| /* Bail out if negative */ | ||
| if ([obj compare:@(0)] == NSOrderedAscending) | ||
| return nil; | ||
| } | ||
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| if ([_backingStore containsIndex:[obj unsignedIntegerValue]]) | ||
| return obj; | ||
| return nil; | ||
| } | ||
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| - (NSEnumerator *)objectEnumerator | ||
| { | ||
| return [[MGSSetBackedByIndexSetEnumerator alloc] initWithSet:self]; | ||
| } | ||
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| - (NSIndexSet *)_indexSet | ||
| { | ||
| return _backingStore; | ||
| } | ||
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| @end | ||
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| @implementation MGSSetBackedByIndexSetEnumerator | ||
| { | ||
| MGSSetBackedByIndexSet *_set; | ||
| NSUInteger _nextIndex; | ||
| } | ||
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| - (instancetype)initWithSet:(MGSSetBackedByIndexSet *)s | ||
| { | ||
| self = [super init]; | ||
| _set = s; | ||
| _nextIndex = 0; | ||
| return self; | ||
| } | ||
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| - (NSArray *)allObjects | ||
| { | ||
| NSRange range; | ||
| __block NSMutableArray *a; | ||
| NSIndexSet *is = _set._indexSet; | ||
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| a = [NSMutableArray array]; | ||
| if (is.lastIndex != NSNotFound && is.lastIndex >= _nextIndex) { | ||
| range = NSMakeRange(_nextIndex, (is.lastIndex+1) - _nextIndex); | ||
| [is enumerateIndexesInRange:range options:0 | ||
| usingBlock:^(NSUInteger i, BOOL *stop) { | ||
| [a addObject:@(i)]; | ||
| }]; | ||
| } | ||
| _set = nil; | ||
| return [a copy]; | ||
| } | ||
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| - (id)nextObject | ||
| { | ||
| NSUInteger idx; | ||
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| idx = [_set._indexSet indexGreaterThanOrEqualToIndex:_nextIndex]; | ||
| if (idx == NSNotFound) { | ||
| _set = nil; | ||
| return nil; | ||
| } | ||
| _nextIndex = idx+1; | ||
| return @(idx); | ||
| } | ||
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| @end | ||
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| @implementation NSSet (Fragaria) | ||
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| - (NSSet *)mgs_initWithIndexSet:(NSIndexSet *)is | ||
| { | ||
| return [[MGSSetBackedByIndexSet alloc] initWithIndexSet:is]; | ||
| } | ||
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| @end |