aparler/RosettaCodeData
1
0
Fork 0
Code Issues 12 Pull requests 3 Projects Releases Packages Wiki Activity Actions

March 2014 update

Browse source
This commit is contained in:
Ingy döt Net 2014-04-02 16:56:35 +00:00
parent 09687c4926
commit a25938f123
1846 changed files with 21876 additions and 5203 deletions
Download patch file Download diff file Expand all files Collapse all files

135
Task/Object-serialization/Objective-C/object-serialization.m
View file

@ -6,15 +6,12 @@
NSString *animalName;
int numberOfLegs;
}
- (id) initWithName: (NSString*)name andLegs: (NSInteger)legs;
- (instancetype) initWithName: (NSString*)name andLegs: (NSInteger)legs;
- (void) dump;
// the following allows "(de)archiving" of the object
- (void) encodeWithCoder: (NSCoder*)coder;
- (id) initWithCoder: (NSCoder*)coder;
@end
@implementation Animal
- (id) initWithName: (NSString*)name andLegs: (NSInteger)legs
- (instancetype) initWithName: (NSString*)name andLegs: (NSInteger)legs
{
if ((self = [super init])) {
animalName = [name retain];
@ -22,11 +19,6 @@
}
return self;
}
- (void) dealloc
{
[animalName release];
[super dealloc];
}
- (void) dump
{
NSLog(@"%@ has %d legs", animalName, numberOfLegs);
@ -52,16 +44,12 @@
BOOL hasFur;
NSMutableArray *eatenList;
}
- (id) initWithName: (NSString*)name hasFur: (BOOL)fur;
- (instancetype) initWithName: (NSString*)name hasFur: (BOOL)fur;
- (void) addEatenThing: (NSString*)thing;
- (void) dump;
// for archiving / dearchiving:
- (void) encodeWithCoder: (NSCoder*)coder;
- (id) initWithCoder: (NSCoder*)coder;
@end
@implementation Mammal
- (id) init
- (instancetype) init
{
if ((self = [super init])) {
hasFur = NO;
@ -69,7 +57,7 @@
}
return self;
}
- (id) initWithName: (NSString*)name hasFur: (BOOL)fur
- (instancetype) initWithName: (NSString*)name hasFur: (BOOL)fur
{
if ((self = [super initWithName: name andLegs: 4])) {
hasFur = fur;
@ -81,21 +69,12 @@
{
[eatenList addObject: thing];
}
- (void) dealloc
{
[eatenList release];
[super dealloc];
}
- (void) dump
{
[super dump];
NSLog(@"has fur? %@", (hasFur) ? @"yes" : @"no" );
// fast enum not implemented yet in gcc 4.3, at least
// without a patch that it seems to exist...
NSEnumerator *en = [eatenList objectEnumerator];
id element;
NSLog(@"it has eaten %d things:", [eatenList count]);
while( (element = [en nextObject]) != nil )
for ( id element in eatenList )
NSLog(@"it has eaten a %@", element);
NSLog(@"end of eaten things list");
}
@ -110,7 +89,7 @@
{
if ((self = [super initWithCoder: coder])) {
hasFur = [coder decodeBoolForKey: @"Mammal.hasFur"];
eatenList = [[coder decodeObjectForKey: @"Mammal.eaten"] retain];
eatenList = [coder decodeObjectForKey: @"Mammal.eaten"];
}
return self;
}
@ -119,67 +98,59 @@
int main()
{
Mammal *aMammal;
Animal *anAnimal;
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
@autoreleasepool {
// let us create a fantasy animal
anAnimal = [[Animal alloc]
initWithName: @"Eptohippos"
andLegs: 7
];
// for some reason an Eptohippos is not an horse with 7 legs,
// and it is not a mammal, of course...
// let us create a fantasy animal
Animal *anAnimal = [[Animal alloc]
initWithName: @"Eptohippos"
andLegs: 7
];
// for some reason an Eptohippos is not an horse with 7 legs,
// and it is not a mammal, of course...
// let us create a fantasy mammal (which is an animal too)
aMammal = [[Mammal alloc]
initWithName: @"Mammaluc"
hasFur: YES
];
// let us add some eaten stuff...
[aMammal addEatenThing: @"lamb"];
[aMammal addEatenThing: @"table"];
[aMammal addEatenThing: @"web page"];
// let us create a fantasy mammal (which is an animal too)
Mammal *aMammal = [[Mammal alloc]
initWithName: @"Mammaluc"
hasFur: YES
];
// let us add some eaten stuff...
[aMammal addEatenThing: @"lamb"];
[aMammal addEatenThing: @"table"];
[aMammal addEatenThing: @"web page"];
// dump anAnimal
NSLog(@"----- original Animal -----");
[anAnimal dump];
// dump anAnimal
NSLog(@"----- original Animal -----");
[anAnimal dump];
// dump aMammal...
NSLog(@"----- original Mammal -----");
[aMammal dump];
// dump aMammal...
NSLog(@"----- original Mammal -----");
[aMammal dump];
// now let us store the objects...
NSMutableData *data = [[NSMutableData alloc] init];
NSKeyedArchiver *arch = [[NSKeyedArchiver alloc]
initForWritingWithMutableData: data];
[arch encodeObject: anAnimal forKey: @"Eptohippos"];
[arch encodeObject: aMammal forKey: @"Mammaluc"];
[anAnimal release];
[aMammal release];
[arch finishEncoding];
[arch release];
[data writeToFile: @"objects.dat" atomically: YES];
[data release];
// now let us store the objects...
NSMutableData *data = [[NSMutableData alloc] init];
NSKeyedArchiver *arch = [[NSKeyedArchiver alloc]
initForWritingWithMutableData: data];
[arch encodeObject: anAnimal forKey: @"Eptohippos"];
[arch encodeObject: aMammal forKey: @"Mammaluc"];
[arch finishEncoding];
[data writeToFile: @"objects.dat" atomically: YES];
// now we want to retrieve the saved objects...
NSData *ldata = [[NSData alloc]
initWithContentsOfFile: @"objects.dat"];
NSKeyedUnarchived *darch = [[NSKeyedUnarchiver alloc]
initForReadingWithData: ldata];
Animal *archivedAnimal = [darch decodeObjectForKey: @"Eptohippos"];
Mammal *archivedMammal = [darch decodeObjectForKey: @"Mammaluc"];
[darch finishDecoding];
[ldata release];
[darch release];
// now we want to retrieve the saved objects...
NSData *ldata = [[NSData alloc]
initWithContentsOfFile: @"objects.dat"];
NSKeyedUnarchived *darch = [[NSKeyedUnarchiver alloc]
initForReadingWithData: ldata];
Animal *archivedAnimal = [darch decodeObjectForKey: @"Eptohippos"];
Mammal *archivedMammal = [darch decodeObjectForKey: @"Mammaluc"];
[darch finishDecoding];
// now let's dump/print the objects...
NSLog(@"\n");
NSLog(@"----- the archived Animal -----");
[archivedAnimal dump];
NSLog(@"----- the archived Mammal -----");
[archivedMammal dump];
// now let's dump/print the objects...
NSLog(@"\n");
NSLog(@"----- the archived Animal -----");
[archivedAnimal dump];
NSLog(@"----- the archived Mammal -----");
[archivedMammal dump];
[pool release];
}
return EXIT_SUCCESS;
}