cappuccino/Foundation/CPArray.j

/*
 * CPArray.j
 * Foundation
 *
 * Created by Francisco Tolmasky.
 * Copyright 2008, 280 North, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

import "CPObject.j"
import "CPRange.j"
import "CPEnumerator.j"
import "CPSortDescriptor.j"
import "CPException.j"

/* @ignore */
@implementation _CPArrayEnumerator : CPEnumerator
{
    CPArray _array;
    int     _index;
}

- (id)initWithArray:(CPArray)anArray
{
    self = [super init];
    
    if (self)
    {
        _array = anArray;
        _index = -1;
    }

    return self;
}

- (id)nextObject
{
    if (++_index >= [_array count])
        return nil;

    return _array[_index];
}

@end

/* @ignore */
@implementation _CPReverseArrayEnumerator : CPEnumerator
{
    CPArray _array;
    int     _index;
}

- (id)initWithArray:(CPArray)anArray
{
    self = [super init];
    
    if (self)
    {
        _array = anArray;
        _index = [_array count];
    }
    
    return self;
}

- (id)nextObject
{
    if (--_index < 0)
        return nil;

    return _array[_index];
}

@end

/*
    A mutable array class backed by a JavaScript Array.
    There is also a <objj>CPMutableArray</objj> class,
    but it is just a child class of this class with an
    empty implementation. All mutable functionality is
    implemented directly in <objj>CPArray</objj>.
*/
@implementation CPArray : CPObject

/*
    Returns a new uninitialized <objj>CPArray</objj>.
*/
+ (id)alloc
{
    return [];
}

/*
    Returns a new initialized <objj>CPArray</objj>.
*/
+ (id)array
{
    return [[self alloc] init];
}

/*
    Creates a new array containing the objects in <code>anArray</code>.
    @param anArray Objects in this array will be added to the new array
    @return a new <objj>CPArray</objj> of the provided objects
*/
+ (id)arrayWithArray:(CPArray)anArray
{
    return [[self alloc] initWithArray:anArray];
}

/*
    Creates a new array with <code>anObject</code> in it.
    @param anObject the object to be added to the array
    @return a new <objj>CPArray</objj> containing a single object
*/
+ (id)arrayWithObject:(id)anObject
{
    return [[self alloc] initWithObjects:anObject];
}

/*
    Creates a new <objj>CPArray</objj> containing all the objects passed as arguments to the method.
    @param anObject the objects that will be added to the new array
    @return a new <objj>CPArray</objj> containing the argument objects
*/
+ (id)arrayWithObjects:(id)anObject, ...
{
    var i = 2,
        array = [[self alloc] init],
        argument;

    for(; i < arguments.length && (argument = arguments[i]) != nil; ++i)
        array.push(argument);

    return array;
}

/*
    Creates a <objj>CPArray</objj> from a JavaScript array of objects.
    @param objects the JavaScript Array
    @param aCount the number of objects in the JS Array
    @return a new <objj>CPArray</objj> containing the specified objects
*/
+ (id)arrayWithObjects:(id)objects count:(unsigned)aCount
{
    return [[self alloc] initWithObjects:objects count:aCount];
}

/*
    Initializes the <objj>CPArray</objj>.
    @return the initialized array
*/
- (id)init
{
    return self;
}

// Creating an Array
/*
    Creates a new <objj>CPArray</objj> from <code>anArray</code>.
    @param anArray objects in this array will be added to the new array
    @return a new <objj>CPArray</objj> containing the objects of <code>anArray</code>
*/
- (id)initWithArray:(CPArray)anArray
{
    self = [super init];
    
    if (self)
        [self setArray:anArray];
    
    return self;
}

/*
    Initializes a the array with the contents of <code>anArray</code>
    and optionally performs a deep copy of the objects based on <code>copyItems</code>.
    @param anArray the array to copy the data from
    @param copyItems if <code>YES</code>, each object will be copied by having a <code>copy</code> message sent to it, and the
    returned object will be added to the receiver. Otherwise, no copying will be performed.
    @return the initialized array of objects
*/
- (id)initWithArray:(CPArray)anArray copyItems:(BOOL)copyItems
{
    if (!copyItems)
        return [self initWithArray:anArray];

    self = [super init];
    
    if (self)
    {
        var index = 0,
            count = [anArray count];
            
        for(; index < count; ++i)
        {
            if (anArray[i].isa)
                self[i] = [anArray copy];
            // Do a deep/shallow copy?
            else
                self[i] = anArray;
        }
    }
    
    return self;
}

/*
    initializes 
*/
- (id)initWithObjects:(Array)anObject, ...
{
    // The arguments array contains self and _cmd, so the first object is at position 2.
    var i = 2,
        argument;
    
    for(; i < arguments.length && (argument = arguments[i]) != nil; ++i)
        push(argument);

    return self; 
}

/*
    Initializes the array with a JavaScript array of objects.
    @param objects the array of objects to add to the receiver
    @param aCount the number of objects in <code>objects</code>
    @return the initialized <objj>CPArray</objj>
*/
- (id)initWithObjects:(id)objects count:(unsigned)aCount
{
    self = [super init];
    
    if (self)
    {
        var index = 0;
    
        for(; index < aCount; ++index)
            push(objects[index]);
    }

    return self;
}

/*
    Returns a hash of the <objj>CPArray</objj>.
    @return an unsigned integer hash
*/
- (unsigned)hash
{
    if (self.__address == nil)
        self.__address = _objj_generateObjectHash();
        
    return self.__address;
}

// Querying an array
/*
    Returns <code>YES</code> if the array contains <code>anObject</code>. Otherwise, it returns <code>NO</code>.
    @param anObject the method checks if this object is already in the array
*/
- (BOOL)containsObject:(id)anObject
{
    return [self indexOfObject:anObject] != CPNotFound;
}

/*
    Returns the number of elements in the array
*/
- (int)count
{
    return length;
}

/*
    Returns the index of <code>anObject</code> in this array.
    If the object is <code>nil</code> or not in the array,
    returns <code>CPNotFound</code>. It first attempts to find
    a match using <code>isEqual:</code>, then <code>==</code>.
    @param anObject the object to search for
*/
- (int)indexOfObject:(id)anObject
{
    if (anObject === nil)
        return CPNotFound;
    
    var i = 0, 
        count = length;

    // Only use isEqual: if our object is a CPObject.
    if (anObject.isa)
    {
        for(; i < count; ++i)
            if([self[i] isEqual:anObject])
                return i;
    }
    // If indexOf exists, use it since it's probably 
    // faster than anything we can implement.
    else if (self.indexOf)
        return indexOf(anObject);
    // Last resort, do a straight forward linear O(N) search.
    else
        for(; i < count; ++i)
            if(self[i] == anObject)
                return i;
    
    return CPNotFound;
}

/*
    Returns the index of <code>anObject</code> in the array
    within <code>aRange</code>. It first attempts to find
    a match using <code>isEqual:</code>, then <code>==</code>.
    @param anObject the object to search for
    @param aRange the range to search within
    @return the index of the object, or <code>CPNotFound</code> if it was not found.
*/
- (int)indexOfObject:(id)anObject inRange:(CPRange)aRange
{
    if (anObject === nil)
        return CPNotFound;
    
    var i = aRange.location, 
        count = MIN(CPMaxRange(aRange), length);
    
    // Only use isEqual: if our object is a CPObject.
    if (anObject.isa)
    {
        for(; i < count; ++i)
            if([self[i] isEqual:anObject])
                return i;
    }
    // Last resort, do a straight forward linear O(N) search.
    else
        for(; i < count; ++i)
            if(self[i] == anObject)
                return i;
    
    return CPNotFound;
}

/*
    Returns the index of <code>anObject</code> in the array. The test for equality is done using only <code>==</code>.
    @param anObject the object to search for
    @return the index of the object in the array. <code>CPNotFound</code> if the object is not in the array.
*/
- (int)indexOfObjectIdenticalTo:(id)anObject
{
    if (anObject === nil)
        return CPNotFound;
    
    // If indexOf exists, use it since it's probably 
    // faster than anything we can implement.
    if (self.indexOf)
        return indexOf(anObject);
    
    // Last resort, do a straight forward linear O(N) search.
    else
    {
        var index = 0, 
            count = length;
        
        for(; index < count; ++index)
            if(self[index] == anObject)
                return index;
    }
    
    return CPNotFound;
}

/*
    Returns the index of <code>anObject</code> in the array
    within <code>aRange</code>. The test for equality is
    done using only <code>==</code>.
    @param anObject the object to search for
    @param aRange the range to search within
    @return the index of the object, or <code>CPNotFound</code> if it was not found.
*/
- (int)indexOfObjectIdenticalTo:(id)anObject inRange:(CPRange)aRange
{
    if (anObject === nil)
        return CPNotFound;
    
    // If indexOf exists, use it since it's probably 
    // faster than anything we can implement.
    if (self.indexOf)
    {
        var index = indexOf(anObject, aRange.location);
        
        if (CPLocationInRange(index, aRange))
            return index;
    }
    
    // Last resort, do a straight forward linear O(N) search.
    else
    {
        var index = aRange.location, 
            count = MIN(CPMaxRange(aRange), length);
        
        for(; index < count; ++index)
            if(self[index] == anObject)
                return index;
    }
    
    return CPNotFound;
}

/*
    Returns the last object in the array. If the array is empty, returns <code>nil</code>/
*/
- (id)lastObject
{
    var count = [self count];
    
    if (!count) return nil;
    
    return self[count - 1];
}

/*
    Returns the object at index <code>anIndex</code>.
    @throws CPRangeException if <code>anIndex</code> is out of bounds
*/
- (id)objectAtIndex:(int)anIndex
{
    return self[anIndex];
}

/*
    Returns the objects at <code>indexes</code> in a new <objj>CPArray</objj>.
    @param indexes the set of indices
    @throws CPRangeException if any of the indices is greater than or equal to the length of the array
*/
- (CPArray)objectsAtIndexes:(CPIndexSet)indexes
{
    var index = [indexes firstIndex],
        objects = [];

    while(index != CPNotFound)
    { 
        [objects addObject:self[index]];
        index = [indexes indexGreaterThanIndex:index];
    }

    return objects;
}

/*
    Returns an enumerator describing the array sequentially
    from the first to the last element. You should not modify
    the array during enumeration.
*/
- (CPEnumerator)objectEnumerator
{
    return [[_CPArrayEnumerator alloc] initWithArray:self];
}

/*
    Returns an enumerator describing the array sequentially
    from the last to the first element. You should not modify
    the array during enumeration.
*/
- (CPEnumerator)reverseObjectEnumerator
{
    return [[_CPReverseArrayEnumerator alloc] initWithArray:self];
}

// Sending messages to elements
/*
    Sends each element in the array a message.
    @param aSelector the selector of the message to send
    @throws CPInvalidArgumentException if <code>aSelector</code> is <code>nil</code>
*/
- (void)makeObjectsPerformSelector:(SEL)aSelector
{
    if (!aSelector)
        [CPException raise:CPInvalidArgumentException reason:"makeObjectsPerformSelector: 'aSelector' can't be nil"];
    
    var index = 0, 
        count = length;
        
    for(; index < count; ++index)
        objj_msgSend(self[index], aSelector);
}

/*
    Sends each element in the array a message with an argument.
    @param aSelector the selector of the message to send
    @param anObject the first argument of the message
    @throws CPInvalidArgumentException if <code>aSelector</code> is <code>nil</code>
*/
- (void)makeObjectsPerformSelector:(SEL)aSelector withObject:(id)anObject
{
    if (!aSelector)
        [CPException raise:CPInvalidArgumentException reason:"makeObjectsPerformSelector:withObject 'aSelector' can't be nil"];

    var index = 0, 
        count = length;
        
    for(; index < count; ++index) 
        objj_msgSend(self[index], aSelector, anObject);
}

// Comparing arrays
/*
    Returns the first object found in the receiver (starting at index 0) which is present in the
    <code>otherArray</code> as determined by using the <code>-containsObject:</code> method.
    @return the first object found, or <code>nil</code> if no common object was found.
*/
- (id)firstObjectCommonWithArray:(CPArray)anArray
{
    if (![anArray count] || ![self count])
        return nil;
    
    var i = 0,
        count = [self count];

    for(; i < count; ++i)
        if([anArray containsObject:self[i]])
            return self[i];

    return nil;
}

/*
    Returns true if anArray contains exactly the same objects as the reciever.
*/
- (BOOL)isEqualToArray:(id)anArray
{
    if(length != anArray.length)
        return NO;
    
    var index = 0,
        count = [self count];
    
    for(; index < count; ++index)
        if(!self[index] || !anArray[index] || ![self[index] isEqual:anArray[index]])
            return NO;
    
    return YES;
}

// Deriving new arrays
/*
    Returns a copy of this array plus <code>anObject</code> inside the copy.
    @param anObject the object to be added to the array copy
    @throws CPInvalidArgumentException if <code>anObject</code> is <code>nil</code>
    @return a new array that should be n+1 in size compared to the receiver.
*/
- (CPArray)arrayByAddingObject:(id)anObject
{
    if (!anObject)
        [CPException raise:CPInvalidArgumentException
                    reason:"arrayByAddingObject: object can't be nil"];

    var array = [self copy];
    
    array.push(anObject);
    
    return array;
}

/*
    Returns a new array which is the concatenation of <code>self</code> and otherArray (in this precise order).
    @param anArray the array that will be concatenated to the receiver's copy
*/
- (CPArray)arrayByAddingObjectsFromArray:(CPArray)anArray
{
    return slice(0).concat(anArray);
}

/*  
- (CPArray)filteredArrayUsingPredicate:(CPPredicate)aPredicate
{
    var i= 0, 
        count = [self count],
        array = [CPArray array];
    
    for(; i<count; ++i)
        if(aPredicate.evaluateWithObject(self[i]))
            array.push(self[i]);
    
    return array;
}
*/

/*
    Returns a subarray of the receiver containing the objects found in the specified range <code>aRange</code>.
    @param aRange the range of objects to be copied into the subarray
    @throws CPRangeException if the specified range exceeds the bounds of the array
*/
- (CPArray)subarrayWithRange:(CPRange)aRange
{
    if (aRange.location < 0 || (aRange.location + CPMaxRange(aRange)) > length)
        [CPException raise:CPRangeException reason:"subarrayWithRange: aRange out of bounds"];

    return slice(aRange.location, maxRange);
}

// Sorting arrays
/*
    Not yet described.
*/
- (CPArray)sortedArrayUsingDescriptors:(CPArray)descriptors
{
    var sorted = [self copy];
    
    [sorted sortUsingDescriptors:descriptors];
    
    return sorted;
}

/*
    Returns an array in which the objects are ordered according
    to a sort with <code>aFunction</code>. This invokes
    <code>-sortUsingFunction:context</code>.
    @param aFunction a JavaScript 'Function' type that compares objects
    @param aContext context information
    @return a new sorted array
*/
- (CPArray)sortedArrayUsingFunction:(Function)aFunction context:(id)aContext
{
    var sorted = [self copy];
    
    [sorted sortUsingFunction:aFunction context:aContext];
    
    return sorted;
}

/*
    Returns a new array in which the objects are ordered according to a sort with <code>aSelector</code>.
    @param aSelector the selector that will perform object comparisons
*/
- (CPArray)sortedArrayUsingSelector:(SEL)aSelector
{
    var sorted = [self copy]
    
    [sorted sortUsingSelector:aSelector];

    return sorted;
}

// Working with string elements

/*
    Returns a string formed by concatenating the objects in the
    receiver, with the specified separator string inserted between each part.
    If the element is a Cappuccino object, then the <code>description</code>
    of that object will be used, otherwise the default JavaScript representation will be used.
    @param aString the separator that will separate each object string
    @return the string representation of the array
*/
- (CPString)componentsJoinedByString:(CPString)aString
{
    var index = 0,
        count = [self count],
        string = @"";
        
    for(; index < count; ++i)
        string += self[index].isa ? [self[index] description] : self[index];
        
    return string;
}

// Creating a description of the array

/*
    Returns a human readable description of this array and it's elements.
*/
- (CPString)description
{
    var i = 0,
        count = [self count],
        description = '(';
    
    for(; i < count; ++i)
    {
        if (self[i].isa) description += [self[i] description];
        else description += self[i];
        
        if (i != count - 1) description += ", ";
    }
        
    return description + ')';
}

// Collecting paths
/*
    Returns a new array subset formed by selecting the elements that have
    filename extensions from <code>filterTypes</code>. Only elements
    that are of type <objj>CPString</objj> are candidates for inclusion in the returned array.
    @param filterTypes an array of <objj>CPString</objj> objects that contain file extensions (without the '.')
    @return a new array with matching paths
*/
- (CPArray)pathsMatchingExtensions:(CPArray)filterTypes
{
    var index = 0,
        count = [self count],
        array = [];
    
    for(; index < count; ++index)
        if (self[index].isa && [self[index] isKindOfClass:[CPString class]] && [filterTypes containsObject:[self[index] pathExtension]])
            array.push(self[index]);
    
    return array;
}

// Key value coding
/*
    Sets the key-value for each element in the array.
    @param aValue the value for the coding
    @param aKey the key for the coding
*/
- (void)setValue:(id)aValue forKey:(CPString)aKey
{
    var i = 0,
        count = [self count];
    
    for(; i < count; ++i)
        [self[i] setValue:aValue forKey:aKey];
}

/*
    Returns the value for <code>aKey</code> from each element in the array.
    @param aKey the key to return the value for
    @return an array of containing a value for each element in the array
*/
- (CPArray)valueForKey:(CPString)aKey
{
    var i = 0,
        count = [self count],
        array = [];
    
    for(; i < count; ++i)
        array.push([self[i] valueForKey:aKey]);
    
    return array;
}

// Copying arrays

/*
    Makes a copy of the receiver.
    @return a new <objj>CPArray</objj> copy
*/
- (id)copy
{
    return slice(0);
}
    
@end

@implementation CPArray(CPMutableArray)

// Creating arrays
/*
    Creates an array able to store at least  <code>aCapacity</code>
    items. Because <objj>CPArray</objj> is backed by JavaScript arrays,
    this method ends up simply returning a regular array.
*/
+ (CPArray)arrayWithCapacity:(unsigned)aCapacity
{
    return [[self alloc] initWithCapacity:aCapacity];
}

/*
    Initializes an array able to store at least <code>aCapacity</code> items. Because <objj>CPArray</objj>
    is backed by JavaScript arrays, this method ends up simply returning a regular array.
*/
- (id)initWithCapacity:(unsigned)aCapacity
{
    return self;
}

// Adding and replacing objects
/*
    Adds <code>anObject</code> to the end of the array.
    @param anObject the object to add to the array
*/
- (void)addObject:(id)anObject
{
    push(anObject);
}

/*
    Adds the objects in <code>anArray</code> to the receiver array.
    @param anArray the array of objects to add to the end of the receiver
*/
- (void)addObjectsFromArray:(CPArray)anArray
{
    splice.apply(self, [length, 0].concat(anArray));
}

/*
    Inserts an object into the receiver at the specified location.
    @param anObject the object to insert into the array
    @param anIndex the location to insert <code>anObject</code> at
*/
- (void)insertObject:(id)anObject atIndex:(int)anIndex
{
    splice(anIndex, 0, anObject);
}

/*
    Inserts the objects in the provided array into the receiver at the indexes specified.
    @param objects the objects to add to this array
    @param anIndexSet the indices for the objects
*/
- (void)insertObjects:(CPArray)objects atIndexes:(CPIndexSet)anIndexSet
{
    var index = 0,
        position = CPNotFound;
    
    while ((position = [indexes indexGreaterThanIndex:position]) != CPNotFound)
        [self insertObject:objects[index++] atindex:position];
}

/*
    Replaces the element at <code>anIndex</code> with <code>anObject</code>.
    The current element at position <code>anIndex</code> will be removed from the array.
    @param anIndex the position in the array to place <code>anObject</code>
*/
- (void)replaceObjectAtIndex:(int)anIndex withObject:(id)anObject
{
    self[anIndex] = anObject;
}

/*
    Replace the elements at the indices specified by <code>anIndexSet</code> with
    the objects in <code>objects</code>.
    @param anIndexSet the set of indices to array positions that will be replaced
    @param objects the array of objects to place in the specified indices
*/
- (void)replaceObjectsAtIndexes:(CPIndexSet)anIndexSet withObjects:(CPArray)objects
{
    var i = 0, 
        index = [anIndexSet firstIndex];
   
    while(index != CPNotFound)
    {
        [self replaceObjectAtIndex:index withObject:objects[i++]];
        index = [anIndexSet indexGreaterThanIndex:index];
    }
}

/*
    Replaces some of the receiver's objects with objects from <code>anArray</code>. Specifically, the elements of the
    receiver in the range specified by <code>aRange</code>,
    with the elements of <code>anArray</code> in the range specified by <code>otherRange</code>.
    @param aRange the range of elements to be replaced in the receiver
    @param anArray the array to retrieve objects for placement into the receiver
    @param otherRange the range of objects in <code>anArray</code> to pull from for placement into the receiver
*/
- (void)replaceObjectsInRange:(CPRange)aRange withObjectsFromArray:(CPArray)anArray range:(CPRange)otherRange
{
    if (!otherRange.location && otherRange.length == [anArray count])
        [self replaceObjectsInRange:aRange withObjectsFromArray:anArray];
    else
        splice.apply(self, [aRange.location, aRange.length].concat([anArray subarrayWithRange:otherRange]));
}

/*
    Replaces some of the receiver's objects with the objects from
    <code>anArray</code>. Specifically, the elements of the
    receiver in the range specified by <code>aRange</code>.
    @param aRange the range of elements to be replaced in the receiver
    @param anArray the array to retrieve objects for placement into the receiver
*/
- (void)replaceObjectsInRange:(CPRange)aRange withObjectsFromArray:(CPArray)anArray
{
    splice.apply(self, [aRange.location, aRange.length].concat(anArray));
}

/*
    Sets the contents of the receiver to be identical to the contents of <code>anArray</code>.
    @param anArray the array of objects used to replace the receiver's objects
*/
- (void)setArray:(CPArray)anArray
{
    if(self == anArray) return;
    
    splice.apply(self, [0, length].concat(anArray));
}

// Removing Objects
/*
    Removes all objects from this array.
*/
- (void)removeAllObjects
{
    splice(0, length);
}

/*
    Removes the last object from the array.
*/
- (void)removeLastObject
{
    pop();
}

/*
    Removes all entries of <code>anObject</code> from the array.
    @param anObject the object whose entries are to be removed
*/
- (void)removeObject:(id)anObject
{
    [self removeObject:anObject inRange:CPMakeRange(0, length)];
}

/*
    Removes all entries of <code>anObject</code> from the array, in the range specified by <code>aRange</code>.
    @param anObject the object to remove
    @param aRange the range to search in the receiver for the object
*/
- (void)removeObject:(id)anObject inRange:(CPRange)aRange
{
    var index;
    
    while ((index = [self indexOfObject:anObject inRange:aRange]) != CPNotFound)
    {
        [self removeObjectAtIndex:index];
        aRange = CPIntersectionRange(CPMakeRange(index, length - index), aRange);
    }
}

/*
    Removes the object at <code>anIndex</code>.
    @param anIndex the location of the element to be removed
*/
- (void)removeObjectAtIndex:(int)anIndex
{
    splice(anIndex, 1);
}

/*
    Removes the objects at the indices specified by <code>CPIndexSet</code>.
    @param anIndexSet the indices of the elements to be removed from the array
*/
- (void)removeObjectsAtIndexes:(CPIndexSet)anIndexSet
{
    var index = [anIndexSet lastIndex];
   
    while (index != CPNotFound)
    {
        [self removeObjectAtIndex:index];
        index = [anIndexSet indexSmallerThanIndex:index];
    }
}

/*
    Remove the first instance of <code>anObject</code> from the array.
    The search for the object is done using <code>==</code>.
    @param anObject the object to remove
*/
- (void)removeObjectIdenticalTo:(id)anObject
{
    [self removeObjectIdenticalTo:anObject inRange:CPMakeRange(0, length)];
}

/*
    Remove the first instance of <code>anObject</code> from the array,
    within the range specified by <code>aRange</code>.
    The search for the object is done using <code>==</code>.
    @param anObject the object to remove
    @param aRange the range in the array to search for the object
*/
- (void)removeObjectIdenticalTo:(id)anObject inRange:(CPRange)aRange
{
    var index;
    
    while ((index = [self indexOfObjectIdenticalTo:anObject inRange:aRange]) != CPNotFound)
    {
        [self removeObjectAtIndex:index];
        aRange = CPIntersectionRange(CPMakeRange(index, length - index), aRange);
    }
}

/*
    Remove the objects in <code>anArray</code> from the receiver array.
    @param anArray the array of objects to remove from the receiver
*/
- (void)removeObjectsInArray:(CPArray)anArray
{
    var index = 0,
        count = [anArray count];
        
    for (; index < count; ++index)
        [self removeObject:anArray[index]];
}

/*
    Removes all the objects in the specified range from the receiver.
    @param aRange the range of objects to remove
*/
- (void)removeObjectsInRange:(CPRange)aRange
{
    splice(aRange.location, aRange.length);
}

// Rearranging objects
/*
    Swaps the elements at the two specified indices.
    @param anIndex the first index to swap from
    @param otherIndex the second index to swap from
*/
- (void)exchangeObjectAtIndex:(unsigned)anIndex withObjectAtIndex:(unsigned)otherIndex
{
    var temporary = self[anIndex];
    self[anIndex] = self[otherIndex];
    self[otherIndex] = temporary;
}

- (CPArray)sortUsingDescriptors:(CPArray)descriptors
{
    sort(function(lhs, rhs)
    {
        var i = 0,
            count = [descriptors count],
            result = CPOrderedSame;
        
        while(i < count)
            if((result = [descriptors[i++] compareObject:lhs withObject:rhs]) != CPOrderedSame)
                return result;
        
        return result;
    });
}

/*
    Sorts the receiver array using a JavaScript function as a comparator, and a specified context.
    @param aFunction a JavaScript function that will be called to compare objects
    @param aContext an object that will be passed to <code>aFunction</code> with comparison
*/
- (void)sortUsingFunction:(Function)aFunction context:(id)aContext
{
    sort(function(lhs, rhs) { return aFunction(lhs, rhs, aContext); });
}

/*
    Sorts the receiver array using an Objective-J method as a comparator.
    @param aSelector the selector for the method to call for comparison
*/
- (void)sortUsingSelector:(SEL)aSelector
{
    sort(function(lhs, rhs) { return objj_msgSend(lhs, aSelector, rhs); });
}

@end

@implementation CPArray (CPCoding)

- (id)initWithCoder:(CPCoder)aCoder
{
    return [aCoder _decodeArrayOfObjectsForKey:@"CP.objects"];
}

- (void)encodeWithCoder:(CPCoder)aCoder
{
    [aCoder _encodeArrayOfObjects:self forKey:@"CP.objects"];
}

@end

/*
    This class is just an empty subclass of <objj>CPArray</objj>.
    <objj>CPArray</objj> already implements mutable methods and
    this class only exists for source compatability.
*/
@implementation CPMutableArray : CPArray

@end

Array.prototype.isa = CPArray;
[CPArray initialize];