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/**
NSNumber-additions.h
Various methods for NSNumber
Copyright (c) 2002 Free Software Foundation
This file is part of the StepTalk project.
*/
#import "NSNumber+additions.h"
#import "STBlock.h"
#include <math.h>
#import <Foundation/NSAutoreleasePool.h>
@implementation NSNumber (STSmalltalkAdditions)
- ifTrue:(STBlock *)block
{
if([self isTrue])
{
return [block value];
}
return self;
}
- ifFalse:(STBlock *)block
{
if([self isFalse])
{
return [block value];
}
return self;
}
- ifTrue:(STBlock *)trueBlock ifFalse:(STBlock *)falseBlock
{
if([self isTrue])
{
return [trueBlock value];
}
return [falseBlock value];
}
- ifFalse:(STBlock *)falseBlock ifTrue:(STBlock *)trueBlock
{
if([self isFalse])
{
return [falseBlock value];
}
return [trueBlock value];
}
- (BOOL)isTrue
{
return ([self intValue] != 0);
}
- (BOOL)isFalse
{
return ([self intValue] == 0);
}
/* FIXME: make it work with floats */
- to:(int)number do:(STBlock *)block
{
id retval = nil;
int i;
for(i=[self intValue];i<=number;i++)
{
retval = [block valueWith:[NSNumber numberWithInt:i]];
}
return retval;
}
- to:(int)number step:(int)step do:(STBlock *)block
{
id retval = nil;
int i;
if (step > 0)
{
for(i=[self intValue];i<=number;i+=step)
{
retval = [block valueWith:[NSNumber numberWithInt:i]];
}
}
else
{
// step =< 0
for(i=[self intValue];i>=number;i+=step)
{
retval = [block valueWith:[NSNumber numberWithInt:i]];
}
}
return retval;
}
@end
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