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/*
Copyright (c) 1998, 1999, 2000, 2001, 2003, 2004 Benhur Stein
This file is part of Paj.
Paj 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 of the License, or (at your
option) any later version.
Paj 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 Paj; if not, write to the Free Software Foundation, Inc.,
59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
//
// SourceCodeReference
//
// Contains a reference to a source line in a file.
//
#include "SourceCodeReference.h"
#include "Macros.h"
@implementation SourceCodeReference
NSMutableSet *allReferences;
+ (void)initialize
{
allReferences = [[NSMutableSet alloc] init]; // never released!
}
+ (SourceCodeReference *)referenceToFilename:(NSString *)name
lineNumber:(int)line
{
return [[[self alloc] initWithFilename:name lineNumber:line] autorelease];
}
- (id)initWithFilename:(NSString *)name
lineNumber:(int)line
{
self = [super init];
if (self != nil) {
id obj;
Assign(filename, name);
lineNumber = line;
obj = [allReferences member:self];
if (obj == nil) {
[allReferences addObject:self];
} else {
Assign(self, obj);
}
}
return self;
}
- (void)dealloc
{
Assign(filename, nil);
[super dealloc];
}
//
// accessors
//
- (NSString *)filename
{
return filename;
}
- (NSInteger)lineNumber
{
return lineNumber;
}
- (NSString *)description
{
return [NSString stringWithFormat:@"%@:%d", filename, lineNumber];
}
//
// it can be hashed (NSObject protocol)
//
- (unsigned)hash
{
return lineNumber;
}
- (BOOL)isEqual:(id)object
{
if ((self == object)
|| ([object isKindOfClass:[SourceCodeReference class]]
&& lineNumber == [object lineNumber]
&& [filename isEqual:[object filename]]))
return YES;
return NO;
}
- (id)copyWithZone:(NSZone *)zone
{
return [self retain];
}
// NSCoding Protocol
- (void)encodeWithCoder:(NSCoder *)coder
{
// [super encodeWithCoder:coder];
[coder encodeValuesOfObjCTypes:"@i", &filename, &lineNumber];
}
- (id)initWithCoder:(NSCoder *)coder
{
self = [super init];//WithCoder:coder];
[coder decodeValuesOfObjCTypes:"@i", &filename, &lineNumber];
return self;
}
@end
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