jens@0: //
jens@0: //  ValueArray.m
jens@0: //  MYUtilities
jens@0: //
jens@0: //  Copyright 2008 Jens Alfke. All rights reserved.
jens@0: //
jens@0: 
jens@0: #import "ValueArray.h"
jens@0: 
jens@0: 
jens@0: @implementation ValueArray
jens@0: 
jens@0: 
jens@0: - (id) initWithCount: (unsigned)count valueSize: (size_t)valueSize
jens@0: {
jens@0:     self = [super init];
jens@0:     if( self ) {
jens@0:         _count = count;
jens@0:         _valueSize = valueSize;
jens@0:     }
jens@0:     return self;
jens@0: }
jens@0: 
jens@0: + (ValueArray*) valueArrayWithCount: (unsigned)count valueSize: (size_t)valueSize
jens@0: {
jens@0:     return [[(ValueArray*)NSAllocateObject(self,count*valueSize,nil)
jens@0:                             initWithCount: count valueSize: valueSize] 
jens@0:                                 autorelease];
jens@0: }
jens@0: 
jens@0: - (unsigned) count      {return _count;}
jens@0: - (size_t) valueSize    {return _valueSize;}
jens@0: 
jens@0: - (const void*) valueAtIndex: (unsigned)i
jens@0: {
jens@0:     NSParameterAssert(i<_count);
jens@0:     return (const char*)object_getIndexedIvars(self) + i*_valueSize;
jens@0: }
jens@0: 
jens@0: - (void) getValue: (void*)value atIndex: (unsigned)i
jens@0: {
jens@0:     NSParameterAssert(i<_count);
jens@0:     NSParameterAssert(value!=NULL);
jens@0:     memcpy(value, object_getIndexedIvars(self) + i*_valueSize, _valueSize);
jens@0: }
jens@0: 
jens@0: - (void) setValue: (const void*)value atIndex: (unsigned)i
jens@0: {
jens@0:     NSParameterAssert(i<_count);
jens@0:     NSParameterAssert(value!=NULL);
jens@0:     memcpy(object_getIndexedIvars(self) + i*_valueSize, value, _valueSize);
jens@0: }
jens@0: 
jens@0: 
jens@0: 
jens@0: - (id)initWithCoder:(NSCoder *)decoder
jens@0: {
jens@0:     NSParameterAssert([decoder allowsKeyedCoding]);
jens@0:     NSKeyedUnarchiver *arch = (NSKeyedUnarchiver*)decoder;
jens@0:     unsigned count = [arch decodeIntForKey: @"count"];
jens@0:     size_t valueSize = [arch decodeIntForKey: @"valueSize"];
jens@0:     
jens@0:     [super release];
jens@0:     self = [[[self class] valueArrayWithCount: count valueSize: valueSize] retain];
jens@0:     if( self ) {
jens@0:         unsigned nBytes;
jens@0:         const void *bytes = [arch decodeBytesForKey: @"values" returnedLength: &nBytes];
jens@0:         NSAssert(nBytes==count*valueSize,@"Value size mismatch");
jens@0:         memcpy( object_getIndexedIvars(self), bytes, nBytes );
jens@0:     }
jens@0:     return self;
jens@0: }
jens@0: 
jens@0: 
jens@0: - (void)encodeWithCoder:(NSCoder *)coder
jens@0: {
jens@0:     NSParameterAssert([coder allowsKeyedCoding]);
jens@0:     NSKeyedArchiver *arch = (NSKeyedArchiver*)coder;
jens@0:     
jens@0:     [arch encodeInt: _count forKey: @"count"];
jens@0:     [arch encodeInt: _valueSize forKey: @"valueSize"];
jens@0:     [arch encodeBytes: object_getIndexedIvars(self)
jens@0:                length: _count*_valueSize
jens@0:                forKey: @"values"];
jens@0: }    
jens@0: 
jens@0: 
jens@0: @end
jens@0: 
jens@0: 
jens@0: ImplementValueArrayOf(Int,int)
jens@0: 
jens@0: ImplementValueArrayOf(Double,double)