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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@5294 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Richard Frith-MacDonald 1999-11-26 20:06:17 +00:00
parent d4c4e59396
commit 7a7a91d766
4 changed files with 65 additions and 6 deletions
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53
Source/NSRange.m
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@ -8,9 +8,35 @@
#include <Foundation/NSException.h>
#include <Foundation/NSString.h>
#include <Foundation/NSRange.h>
#include <Foundation/NSScanner.h>
@class NSString;
static Class NSStringClass = 0;
static Class NSScannerClass = 0;
static SEL scanIntSel = @selector(scanInt:);
static SEL scanStringSel = @selector(scanString:intoString:);
static SEL scannerSel = @selector(scannerWithString:);
static BOOL (*scanIntImp)(NSScanner*, SEL, int*);
static BOOL (*scanStringImp)(NSScanner*, SEL, NSString*, NSString**);
static id (*scannerImp)(Class, SEL, NSString*);
static inline void
setupCache()
{
if (NSStringClass == 0)
{
NSStringClass = [NSString class];
NSScannerClass = [NSScanner class];
scanIntImp = (BOOL (*)(NSScanner*, SEL, int*))
[NSScannerClass instanceMethodForSelector: scanIntSel];
scanStringImp = (BOOL (*)(NSScanner*, SEL, NSString*, NSString**))
[NSScannerClass instanceMethodForSelector: scanStringSel];
scannerImp = (id (*)(Class, SEL, NSString*))
[NSScannerClass methodForSelector: scannerSel];
}
}
NSRange
NSMakeRange(unsigned int location, unsigned int length)
{
@ -27,10 +53,33 @@ NSMakeRange(unsigned int location, unsigned int length)
return range;
}
NSRange
NSRangeFromString(NSString* string)
{
NSScanner *scanner;
NSRange range;
setupCache();
scanner = (*scannerImp)(NSScannerClass, scannerSel, string);
if ((*scanStringImp)(scanner, scanStringSel, @"{", NULL)
&& (*scanStringImp)(scanner, scanStringSel, @"location", NULL)
&& (*scanStringImp)(scanner, scanStringSel, @"=", NULL)
&& (*scanIntImp)(scanner, scanIntSel, &range.location)
&& (*scanStringImp)(scanner, scanStringSel, @";", NULL)
&& (*scanStringImp)(scanner, scanStringSel, @"length", NULL)
&& (*scanStringImp)(scanner, scanStringSel, @"=", NULL)
&& (*scanIntImp)(scanner, scanIntSel, &range.length)
&& (*scanStringImp)(scanner, scanStringSel, @"}", NULL))
return range;
else
return NSMakeRange(0, 0);
}
NSString *
NSStringFromRange(NSRange range)
{
return [NSString stringWithFormat: @"{location = %d, length = %d}",
range.location, range.length];
setupCache();
return [NSStringClass stringWithFormat: @"{location = %d, length = %d}",
range.location, range.length];
}