Line data    Source code

       1           0 : /*
       2             : 
       3             : NSDictionaryOOExtensions.m
       4             : 
       5             : 
       6             : Copyright (C) 2008-2013 Jens Ayton and contributors
       7             : 
       8             : Permission is hereby granted, free of charge, to any person obtaining a copy
       9             : of this software and associated documentation files (the "Software"), to deal
      10             : in the Software without restriction, including without limitation the rights
      11             : to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
      12             : copies of the Software, and to permit persons to whom the Software is
      13             : furnished to do so, subject to the following conditions:
      14             : 
      15             : The above copyright notice and this permission notice shall be included in all
      16             : copies or substantial portions of the Software.
      17             : 
      18             : THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      19             : IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      20             : FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
      21             : AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      22             : LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
      23             : OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
      24             : SOFTWARE.
      25             : 
      26             : */
      27             : 
      28             : #import "NSDictionaryOOExtensions.h"
      29             : 
      30             : 
      31             : @implementation NSDictionary (OOExtensions)
      32             : 
      33             : - (NSDictionary *) dictionaryByAddingObject:(id)object forKey:(id)key
      34             : {
      35             :         // Note: object lifetime issues aside, we need to copy and autorelease so that the right thing happens for mutable dictionaries.
      36             :         if (object == nil || key == nil)  return [[self copy] autorelease];
      37             :         
      38             :         NSMutableDictionary *temp = [self mutableCopy];
      39             :         [temp setObject:object forKey:key];
      40             :         NSDictionary *result = [[temp copy] autorelease];
      41             :         [temp release];
      42             :         
      43             :         return result;
      44             : }
      45             : 
      46             : 
      47             : - (NSDictionary *) dictionaryByRemovingObjectForKey:(id)key
      48             : {
      49             :         // Note: object lifetime issues aside, we need to copy and autorelease so that the right thing happens for mutable dictionaries.
      50             :         if (key == nil)  return [[self copy] autorelease];
      51             :         
      52             :         NSMutableDictionary *temp = [self mutableCopy];
      53             :         [temp removeObjectForKey:key];
      54             :         NSDictionary *result = [[temp copy] autorelease];
      55             :         [temp release];
      56             :         
      57             :         return result;
      58             : }
      59             : 
      60             : 
      61             : - (NSDictionary *) dictionaryByAddingEntriesFromDictionary:(NSDictionary *)dictionary
      62             : {
      63             :         // Note: object lifetime issues aside, we need to copy and autorelease so that the right thing happens for mutable dictionaries.
      64             :         if (dictionary == nil)  return [[self copy] autorelease];
      65             :         
      66             :         NSMutableDictionary *temp = [self mutableCopy];
      67             :         [temp addEntriesFromDictionary:dictionary];
      68             :         NSDictionary *result = [[temp copy] autorelease];
      69             :         [temp release];
      70             :         
      71             :         return result;
      72             : }
      73             : 
      74             : @end