48 lines
1.3 KiB
Mathematica
48 lines
1.3 KiB
Mathematica
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// NSDictionary+MTLJSONKeyPath.m
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// Mantle
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//
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// Created by Robert Böhnke on 19/03/14.
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// Copyright (c) 2014 GitHub. All rights reserved.
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//
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#import "NSDictionary+MTLJSONKeyPath.h"
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#import "MTLJSONAdapter.h"
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@implementation NSDictionary (MTLJSONKeyPath)
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- (id)mtl_valueForJSONKeyPath:(NSString *)JSONKeyPath success:(BOOL *)success error:(NSError **)error {
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NSArray *components = [JSONKeyPath componentsSeparatedByString:@"."];
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id result = self;
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for (NSString *component in components) {
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// Check the result before resolving the key path component to not
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// affect the last value of the path.
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if (result == nil || result == NSNull.null) break;
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if (![result isKindOfClass:NSDictionary.class]) {
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if (error != NULL) {
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NSDictionary *userInfo = @{
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NSLocalizedDescriptionKey: NSLocalizedString(@"Invalid JSON dictionary", @""),
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NSLocalizedFailureReasonErrorKey: [NSString stringWithFormat:NSLocalizedString(@"JSON key path %1$@ could not resolved because an incompatible JSON dictionary was supplied: \"%2$@\"", @""), JSONKeyPath, self]
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};
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*error = [NSError errorWithDomain:MTLJSONAdapterErrorDomain code:MTLJSONAdapterErrorInvalidJSONDictionary userInfo:userInfo];
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}
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if (success != NULL) *success = NO;
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return nil;
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}
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result = result[component];
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}
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if (success != NULL) *success = YES;
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return result;
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}
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@end
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