Split PackageListController partially for CyteKit.

[cydia.git] / CyteKit / countByEnumeratingWithState.mm

/* Cydia - iPhone UIKit Front-End for Debian APT
 * Copyright (C) 2008-2015  Jay Freeman (saurik)
*/

/* GNU General Public License, Version 3 {{{ */
/*
 * Cydia is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 *
 * Cydia is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Cydia.  If not, see <http://www.gnu.org/licenses/>.
**/
/* }}} */

#include "CyteKit/UCPlatform.h"

#include "CyteKit/countByEnumeratingWithState.h"

#include <objc/runtime.h>

#include "iPhonePrivate.h"

static NSUInteger DOMNodeList$countByEnumeratingWithState$objects$count$(DOMNodeList *self, SEL sel, NSFastEnumerationState *state, id *objects, NSUInteger count) {
    size_t length([self length] - state->state);
    if (length <= 0)
        return 0;
    else if (length > count)
        length = count;
    for (size_t i(0); i != length; ++i)
        objects[i] = [self item:state->state++];
    state->itemsPtr = objects;
    state->mutationsPtr = (unsigned long *) self;
    return length;
}

static struct DOMNodeList$countByEnumeratingWithState { DOMNodeList$countByEnumeratingWithState() {
    class_addMethod(objc_getClass("DOMNodeList"), @selector(countByEnumeratingWithState:objects:count:), (IMP) &DOMNodeList$countByEnumeratingWithState$objects$count$, "I20@0:4^{NSFastEnumerationState}8^@12I16");
} } DOMNodeList$countByEnumeratingWithState;

@implementation WebScriptObject (Cyte)

- (NSUInteger) count {
    id length([self valueForKey:@"length"]);
    if ([length respondsToSelector:@selector(intValue)])
        return [length intValue];
    else
        return 0;
}

- (id) objectAtIndex:(unsigned)index {
    return [self webScriptValueAtIndex:index];
}

- (NSUInteger) countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)objects count:(NSUInteger)count {
    size_t length([self count] - state->state);
    if (length <= 0)
        return 0;
    else if (length > count)
        length = count;
    for (size_t i(0); i != length; ++i)
        objects[i] = [self objectAtIndex:state->state++];
    state->itemsPtr = objects;
    state->mutationsPtr = (unsigned long *) self;
    return length;
}

@end