/*
* Copyright (c) 2008 - 2009
* Jonathan Schleifer <js@webkeks.org>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE included in
* the packaging of this file.
*/
#include "config.h"
#include <string.h>
#import "OFDictionary.h"
#import "OFIterator.h"
#import "OFAutoreleasePool.h"
#import "OFExceptions.h"
#import "OFMacros.h"
#define BUCKET_SIZE sizeof(struct of_dictionary_bucket)
/* References for static linking */
void _references_to_categories_of_OFDictionary()
{
_OFIterator_reference = 1;
}
@implementation OFDictionary
+ dictionary;
{
return [[[self alloc] init] autorelease];
}
+ dictionaryWithDictionary: (OFDictionary*)dict
{
return [[[self alloc] initWithDictionary: dict] autorelease];
}
+ dictionaryWithObject: (OFObject*)obj
forKey: (OFObject <OFCopying>*)key
{
return [[[self alloc] initWithObject: obj
forKey: key] autorelease];
}
+ dictionaryWithObjects: (OFArray*)objs
forKeys: (OFArray*)keys
{
return [[[self alloc] initWithObjects: objs
forKeys: keys] autorelease];
}
+ dictionaryWithKeysAndObjects: (OFObject <OFCopying>*)first, ...
{
id ret;
va_list args;
va_start(args, first);
ret = [[[self alloc] initWithKey: first
argList: args] autorelease];
va_end(args);
return ret;
}
- init
{
self = [super init];
size = 1;
@try {
data = [self allocMemoryWithSize: BUCKET_SIZE];
} @catch (OFException *e) {
/*
* We can't use [super dealloc] on OS X here. Compiler bug?
* Anyway, set size to 0 so that [self dealloc] works.
*/
size = 0;
[self dealloc];
@throw e;
}
data[0].key = nil;
return self;
}
- initWithDictionary: (OFDictionary*)dict
{
size_t i;
self = [super init];
if (dict == nil) {
Class c = isa;
size = 0;
[self dealloc];
@throw [OFInvalidArgumentException newWithClass: c
selector: _cmd];
}
@try {
data = [self allocMemoryForNItems: dict->size
withSize: BUCKET_SIZE];
} @catch (OFException *e) {
/*
* We can't use [super dealloc] on OS X here. Compiler bug?
* Anyway, we didn't do anything yet anyway, so [self dealloc]
* works.
*/
[self dealloc];
@throw e;
}
size = dict->size;
count = dict->count;
for (i = 0; i < size; i++) {
OFObject <OFCopying> *key;
if (dict->data[i].key == nil) {
data[i].key = nil;
continue;
}
@try {
key = [dict->data[i].key copy];
} @catch (OFException *e) {
[self dealloc];
@throw e;
}
@try {
[dict->data[i].object retain];
} @catch (OFException *e) {
[self dealloc];
[key release];
@throw e;
}
data[i].key = key;
data[i].object = dict->data[i].object;
data[i].hash = dict->data[i].hash;
}
return self;
}
- initWithObject: (OFObject*)obj
forKey: (OFObject <OFCopying>*)key
{
self = [self init];
@try {
key = [key copy];
} @catch (OFException *e) {
[self dealloc];
@throw e;
}
@try {
[obj retain];
} @catch (OFException *e) {
[self dealloc];
[key release];
@throw e;
}
data[0].key = key;
data[0].object = obj;
data[0].hash = [key hash];
return self;
}
- initWithObjects: (OFArray*)objs
forKeys: (OFArray*)keys
{
id *objs_carray, *keys_carray;
size_t i;
self = [super init];
@try {
keys_carray = [keys cArray];
objs_carray = [objs cArray];
count = [keys count];
if (count > SIZE_MAX / 8)
@throw [OFOutOfRangeException newWithClass: isa];
for (size = 1; size < count; size <<= 1);
data = [self allocMemoryForNItems: size
withSize: BUCKET_SIZE];
} @catch (OFException *e) {
/*
* We can't use [super dealloc] on OS X here. Compiler bug?
* Anyway, set size to 0 so that [self dealloc] works.
*/
size = 0;
[self dealloc];
@throw e;
}
memset(data, 0, size * BUCKET_SIZE);
for (i = 0; i < count; i++) {
uint32_t j, hash;
hash = [keys_carray[i] hash];
for (j = hash & (size - 1); j < size && data[j].key != nil &&
![data[j].key isEqual: keys_carray[i]]; j++);
/* In case the last bucket is already used */
if (j >= size)
for (j = 0; j < size && data[j].key != nil &&
![data[j].key isEqual: keys_carray[i]]; j++);
/* Key not in dictionary */
if (j >= size || ![data[j].key isEqual: keys_carray[i]]) {
OFObject <OFCopying> *key;
j = hash & (size - 1);
for (; j < size && data[j].key != nil; j++);
/* In case the last bucket is already used */
if (j >= size)
for (j = 0; j < size && data[j].key != nil;
j++);
if (j >= size) {
Class c = isa;
[self dealloc];
@throw [OFOutOfRangeException newWithClass: c];
}
@try {
key = [keys_carray[i] copy];
} @catch (OFException *e) {
[self dealloc];
@throw e;
}
@try {
[objs_carray[i] retain];
} @catch (OFException *e) {
[self dealloc];
[key release];
@throw e;
}
data[j].key = key;
data[j].object = objs_carray[i];
data[j].hash = hash;
continue;
}
/*
* They key is already in the dictionary. However, we just
* replace it so that the programmer gets the same behavior
* as if he'd call setObject:forKey: for each key/object pair.
*/
@try {
[objs_carray[i] retain];
} @catch (OFException *e) {
[self dealloc];
@throw e;
}
@try {
[data[j].object release];
} @catch (OFException *e) {
[self dealloc];
[objs_carray[i] release];
@throw e;
}
data[j].object = objs_carray[i];
}
return self;
}
- initWithKeysAndObjects: (OFObject <OFCopying>*)first, ...
{
id ret;
va_list args;
va_start(args, first);
ret = [self initWithKey: first
argList: args];
va_end(args);
return ret;
}
- initWithKey: (OFObject <OFCopying>*)key
argList: (va_list)args
{
OFObject *obj;
size_t i;
uint32_t j, hash;
va_list args2;
self = [super init];
count = 1;
for (va_copy(args2, args); va_arg(args2, OFObject*) != nil; count++);
count >>= 1;
if (count > SIZE_MAX / 8) {
Class c = isa;
[self dealloc];
@throw [OFOutOfRangeException newWithClass: c];
}
for (size = 1; size < count; size <<= 1);
@try {
data = [self allocMemoryForNItems: size
withSize: BUCKET_SIZE];
} @catch (OFException *e) {
/*
* We can't use [super dealloc] on OS X here. Compiler bug?
* Anyway, set size to 0 so that [self dealloc] works.
* */
size = 0;
[self dealloc];
@throw e;
}
memset(data, 0, size * BUCKET_SIZE);
if (key == nil)
return self;
else if ((obj = va_arg(args, OFObject*)) == nil) {
Class c = isa;
[self dealloc];
@throw [OFInvalidArgumentException newWithClass: c
selector: _cmd];
}
/* Add first key / object pair */
hash = [key hash];
for (j = hash & (size - 1); j < size && data[j].key != nil; j++);
@try {
key = [key copy];
} @catch (OFException *e) {
[self dealloc];
@throw e;
}
@try {
[obj retain];
} @catch (OFException *e) {
[self dealloc];
[key release];
@throw e;
}
data[j].key = key;
data[j].object = obj;
data[j].hash = hash;
for (i = 1; i < count; i++) {
key = va_arg(args, OFObject <OFCopying>*);
obj = va_arg(args, OFObject*);
if (key == nil || obj == nil) {
Class c = isa;
[self dealloc];
@throw [OFInvalidArgumentException newWithClass: c
selector: _cmd];
}
hash = [key hash];
for (j = hash & (size - 1); j < size && data[j].key != nil &&
![data[j].key isEqual: key]; j++);
/* In case the last bucket is already used */
if (j >= size)
for (j = 0; j < size && data[j].key != nil &&
![data[j].key isEqual: key]; j++);
/* Key not in dictionary */
if (j >= size || ![data[j].key isEqual: key]) {
j = hash & (size - 1);
for (; j < size && data[j].key != nil; j++);
/* In case the last bucket is already used */
if (j >= size)
for (j = 0; j < size && data[j].key != nil;
j++);
if (j >= size) {
Class c = isa;
[self dealloc];
@throw [OFOutOfRangeException newWithClass: c];
}
@try {
key = [key copy];
} @catch (OFException *e) {
[self dealloc];
@throw e;
}
@try {
[obj retain];
} @catch (OFException *e) {
[self dealloc];
[key release];
@throw e;
}
data[j].key = key;
data[j].object = obj;
data[j].hash = hash;
continue;
}
/*
* They key is already in the dictionary. However, we just
* replace it so that the programmer gets the same behavior
* as if he'd call setObject:forKey: for each key/object pair.
*/
@try {
[obj retain];
} @catch (OFException *e) {
[self dealloc];
@throw e;
}
@try {
[data[j].object release];
} @catch (OFException *e) {
[self dealloc];
[obj release];
@throw e;
}
data[j].object = obj;
}
return self;
}
- (id)objectForKey: (OFObject <OFCopying>*)key
{
uint32_t i, hash;
if (key == nil)
@throw [OFInvalidArgumentException newWithClass: isa
selector: _cmd];
hash = [key hash];
for (i = hash & (size - 1); i < size && data[i].key != nil &&
![data[i].key isEqual: key]; i++);
if (i < size && data[i].key == nil)
return nil;
/* In case the last bucket is already used */
if (i >= size)
for (i = 0; i < size && data[i].key != nil &&
![data[i].key isEqual: key]; i++);
/* Key not in dictionary */
if (i >= size || ![data[i].key isEqual: key])
return nil;
return data[i].object;
}
- (size_t)count
{
return count;
}
- (id)copy
{
return [self retain];
}
- (id)mutableCopy
{
return [[OFMutableDictionary alloc] initWithDictionary: self];
}
- (BOOL)isEqual: (OFDictionary*)dict
{
size_t i;
if ([dict count] != count)
return NO;
for (i = 0; i < size; i++)
if (data[i].key != nil &&
![[dict objectForKey: data[i].key] isEqual: data[i].object])
return NO;
return YES;
}
- (void)dealloc
{
size_t i;
for (i = 0; i < size; i++) {
if (data[i].key != nil) {
[data[i].key release];
[data[i].object release];
}
}
[super dealloc];
}
- setObject: (OFObject*)obj
forKey: (OFObject <OFCopying>*)key
{
@throw [OFNotImplementedException newWithClass: isa
selector: _cmd];
}
- removeObjectForKey: (OFObject*)key
{
@throw [OFNotImplementedException newWithClass: isa
selector: _cmd];
}
- (uint32_t)hash
{
size_t i;
uint32_t hash;
OF_HASH_INIT(hash);
for (i = 0; i < size; i++) {
if (data[i].key != nil) {
uint32_t kh = [data[i].key hash];
OF_HASH_ADD(hash, kh >> 24);
OF_HASH_ADD(hash, (kh >> 16) & 0xFF);
OF_HASH_ADD(hash, (kh >> 8) & 0xFF);
OF_HASH_ADD(hash, kh & 0xFF);
OF_HASH_ADD(hash, data[i].hash >> 24);
OF_HASH_ADD(hash, (data[i].hash >> 16) & 0xFF);
OF_HASH_ADD(hash, (data[i].hash >> 8) & 0xFF);
OF_HASH_ADD(hash, data[i].hash & 0xFF);
}
}
OF_HASH_FINALIZE(hash);
return hash;
}
@end