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#include <string.h>
#import "OFMutableDictionary.h"
#import "OFExceptions.h"
#import "macros.h"
#define BUCKET_SIZE sizeof(struct of_dictionary_bucket)
#define DELETED (id)&of_dictionary_deleted_bucket
#define BUCKET struct of_dictionary_bucket
#define DELETED &of_dictionary_deleted_bucket
@implementation OFMutableDictionary
- (void)_resizeForCount: (size_t)newcount
{
size_t fill = newcount * 4 / size;
size_t newsize;
struct of_dictionary_bucket *newdata;
struct of_dictionary_bucket **newdata;
uint32_t i;
if (newcount > UINT32_MAX)
@throw [OFOutOfRangeException newWithClass: isa];
if (fill >= 3)
newsize = size << 1;
else if (fill <= 1)
newsize = size >> 1;
else
return;
if (newsize == 0)
@throw [OFOutOfRangeException newWithClass: isa];
newdata = [self allocMemoryForNItems: newsize
withSize: BUCKET_SIZE];
memset(newdata, 0, newsize * BUCKET_SIZE);
withSize: sizeof(BUCKET*)];
for (i = 0; i < newsize; i++)
newdata[i] = NULL;
for (i = 0; i < size; i++) {
if (data[i].key != nil && data[i].key != DELETED) {
if (data[i] != NULL && data[i] != DELETED) {
uint32_t j, last;
last = newsize;
j = data[i].hash & (newsize - 1);
for (; j < last && newdata[j].key != nil; j++);
j = data[i]->hash & (newsize - 1);
for (; j < last && newdata[j] != NULL; j++);
/* In case the last bucket is already used */
if (j >= last) {
last = data[i].hash & (newsize - 1);
last = data[i]->hash & (newsize - 1);
for (j = 0; j < last &&
newdata[j].key != nil; i++);
newdata[j] != NULL; i++);
}
if (j >= last) {
[self freeMemory: newdata];
@throw [OFOutOfRangeException
newWithClass: [self class]];
newWithClass: isa];
}
newdata[j].key = data[i].key;
newdata[j] = data[i];
newdata[j].object = data[i].object;
newdata[j].hash = data[i].hash;
for (i = hash & (size - 1); i < last && data[i].key != nil; i++) {
if (data[i].key == DELETED)
for (i = hash & (size - 1); i < last && data[i] != NULL; i++) {
if (data[i] == DELETED)
continue;
if ([data[i].key isEqual: key])
if ([data[i]->key isEqual: key])
break;
}
/* In case the last bucket is already used */
if (i >= last) {
last = hash & (size - 1);
for (i = 0; i < last && data[i].key != nil; i++) {
if (data[i].key == DELETED)
for (i = 0; i < last && data[i] != NULL; i++) {
if (data[i] == DELETED)
continue;
if ([data[i].key isEqual: key])
if ([data[i]->key isEqual: key])
break;
}
}
/* Key not in dictionary */
if (i >= last || data[i].key == nil || data[i].key == DELETED ||
![data[i].key isEqual: key]) {
if (i >= last || data[i] == NULL || data[i] == DELETED ||
![data[i]->key isEqual: key]) {
BUCKET *b;
[self _resizeForCount: count + 1];
mutations++;
last = size;
for (i = hash & (size - 1); i < last && data[i].key != nil &&
data[i].key != DELETED; i++);
for (i = hash & (size - 1); i < last && data[i] != NULL &&
data[i] != DELETED; i++);
/* In case the last bucket is already used */
if (i >= last) {
last = hash & (size - 1);
for (i = 0; i < last && data[i].key != nil &&
data[i].key != DELETED; i++);
for (i = 0; i < last && data[i] != NULL &&
data[i] != DELETED; i++);
}
if (i >= last)
@throw [OFOutOfRangeException newWithClass: isa];
b = [self allocMemoryWithSize: sizeof(BUCKET)];
@try {
key = [key copy];
key = [key copy];
} @catch (OFException *e) {
[self freeMemory: b];
}
@try {
[obj retain];
} @catch (OFException *e) {
[self freeMemory: b];
[key release];
@throw e;
}
data[i].key = key;
data[i].object = obj;
data[i].hash = hash;
b->key = key;
b->object = obj;
b->hash = hash;
data[i] = b;
count++;
return self;
}
[obj retain];
[data[i].object release];
data[i].object = obj;
[data[i]->object release];
data[i]->object = obj;
return self;
}
- removeObjectForKey: (OFObject*)key
{
uint32_t i, hash, last;
if (key == nil)
@throw [OFInvalidArgumentException newWithClass: isa
selector: _cmd];
hash = [key hash];
last = size;
for (i = hash & (size - 1); i < last && data[i].key != nil; i++) {
if (data[i].key == DELETED)
for (i = hash & (size - 1); i < last && data[i] != NULL; i++) {
if (data[i] == DELETED)
continue;
if ([data[i].key isEqual: key]) {
[data[i].key release];
[data[i].object release];
data[i].key = DELETED;
if ([data[i]->key isEqual: key]) {
[data[i]->key release];
[data[i]->object release];
[self freeMemory: data[i]];
data[i] = DELETED;
count--;
mutations++;
[self _resizeForCount: count];
return self;
}
}
if (i < last)
return self;
/* In case the last bucket is already used */
last = hash & (size - 1);
for (i = 0; i < last && data[i].key != nil; i++) {
if (data[i].key == DELETED)
for (i = 0; i < last && data[i] != NULL; i++) {
if (data[i] == DELETED)
continue;
if ([data[i].key isEqual: key]) {
[data[i].key release];
[data[i].object release];
data[i].key = DELETED;
if ([data[i]->key isEqual: key]) {
[data[i]->key release];
[data[i]->object release];
[self freeMemory: data[i]];
data[i] = DELETED;
count--;
mutations++;
[self _resizeForCount: count];
return self;
}
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- (int)countByEnumeratingWithState: (of_fast_enumeration_state_t*)state
objects: (id*)objects
count: (int)count_
{
int i;
for (i = 0; i < count_; i++) {
for (; state->state < size && (data[state->state].key == nil ||
data[state->state].key == DELETED); state->state++);
for (; state->state < size && (data[state->state] == NULL ||
data[state->state] == DELETED); state->state++);
if (state->state < size) {
objects[i] = data[state->state].key;
objects[i] = data[state->state]->key;
state->state++;
} else
break;
}
state->itemsPtr = objects;
state->mutationsPtr = &mutations;
|