/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
* Jonathan Schleifer <js@heap.zone>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#include "config.h"
#include <stdlib.h>
#include <ctype.h>
#import "OFObject.h"
#import "OFObject+KeyValueCoding.h"
#import "OFString.h"
#import "OFNull.h"
#import "OFOutOfMemoryException.h"
#import "OFUndefinedKeyException.h"
int _OFObject_KeyValueCoding_reference;
static bool
checkTypeEncoding(const char *typeEncoding, char returnType, ...)
{
va_list args;
char type;
if (typeEncoding == NULL)
return false;
if (*typeEncoding++ != returnType)
return false;
while (*typeEncoding >= '0' && *typeEncoding <= '9')
typeEncoding++;
va_start(args, returnType);
while ((type = va_arg(args, int)) != 0) {
if (*typeEncoding++ != type)
return false;
while (*typeEncoding >= '0' && *typeEncoding <= '9')
typeEncoding++;
}
if (*typeEncoding != '\0')
return false;
return true;
}
@implementation OFObject (KeyValueCoding)
- (id)valueForKey: (OFString*)key
{
SEL selector = sel_registerName([key UTF8String]);
const char *typeEncoding = [self typeEncodingForSelector: selector];
if (!checkTypeEncoding(typeEncoding, '@', '@', ':', 0))
return [self valueForUndefinedKey: key];
return [self performSelector: selector];
}
- (id)valueForUndefinedKey: (OFString*)key
{
@throw [OFUndefinedKeyException exceptionWithObject: self
key: key];
}
- (void)setValue: (id)value
forKey: (OFString*)key
{
char *name;
size_t keyLength;
SEL selector;
const char *typeEncoding;
id (*setter)(id, SEL, id);
keyLength = [key UTF8StringLength];
if (keyLength < 1) {
[self setValue: value
forUndefinedKey: key];
return;
}
if ((name = malloc(keyLength + 5)) == NULL)
@throw [OFOutOfMemoryException
exceptionWithRequestedSize: keyLength + 5];
memcpy(name, "set", 3);
memcpy(name + 3, [key UTF8String], keyLength);
memcpy(name + keyLength + 3, ":", 2);
name[3] = toupper(name[3]);
selector = sel_registerName(name);
free(name);
typeEncoding = [self typeEncodingForSelector: selector];
if (!checkTypeEncoding(typeEncoding, 'v', '@', ':', '@', 0)) {
[self setValue: value
forUndefinedKey: key];
return;
}
setter = (id(*)(id, SEL, id))[self methodForSelector: selector];
setter(self, selector, value);
}
- (void)setValue: (id)value
forUndefinedKey: (OFString*)key
{
@throw [OFUndefinedKeyException exceptionWithObject: self
key: key
value: value];
}
@end