ObjFW  Artifact [7d49a47280]

Artifact 7d49a4728071cca62191aef45ad8097e5a87bc6039215712fc8cab52bcb82f58:

• File src/OFConstantString.m — part of check-in [3d16a30f41] at 2013-06-22 12:12:36 on branch trunk — Rework exceptions.

  This mostly removes the argument for the class in which the exception
  occurred. As backtraces were recently added for all platforms, the
  passed class does not give any extra information on where the exception
  occurred anymore.

  This also removes a few other arguments which were not too helpful. In
  the past, the idea was to pass as many arguments as possible so that it
  is easier to find the origin of the exception. However, as backtraces
  are a much better way to find the origin, those are not useful anymore
  and just make the exception more cumbersome to use. The rule is now to
  only pass arguments that might help in recovering from the exception or
  provide information that is otherwise not easily accessible. (user: js, size: 11937) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * 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"

#define OF_CONSTANT_STRING_M

#include <stdlib.h>
#include <string.h>

#import "OFConstantString.h"
#import "OFString_UTF8.h"

#import "OFInitializationFailedException.h"
#import "OFInvalidEncodingException.h"
#import "OFOutOfMemoryException.h"

#if defined(OF_APPLE_RUNTIME) && !defined(__OBJC2__)
# import <objc/runtime.h>

struct {
	struct class *isa, *super_class;
	const char *name;
	long version, info, instance_size;
	struct ivar_list *ivars;
	struct method_list **method_lists;
	struct cache *cache;
	struct protocol_list *protocols;
	const char *ivar_layout;
	struct class_ext *ext;
} _OFConstantStringClassReference;
#endif

@interface OFString_const: OFString_UTF8
@end

@implementation OFString_const
+ alloc
{
	[self doesNotRecognizeSelector: _cmd];
	abort();
}


- (void*)allocMemoryWithSize: (size_t)size
{
	[self doesNotRecognizeSelector: _cmd];
	abort();
}

- (void*)allocMemoryWithSize: (size_t)size
		       count: (size_t)count
{
	[self doesNotRecognizeSelector: _cmd];
	abort();
}

- (void*)resizeMemory: (void*)pointer
		 size: (size_t)size
{
	[self doesNotRecognizeSelector: _cmd];
	abort();
}

- (void*)resizeMemory: (void*)pointer
		 size: (size_t)size
		count: (size_t)count
{
	[self doesNotRecognizeSelector: _cmd];
	abort();
}

- (void)freeMemory: (void*)pointer
{
	[self doesNotRecognizeSelector: _cmd];
	abort();
}

- retain
{
	return self;
}

- autorelease
{
	return self;
}

- (unsigned int)retainCount
{
	return OF_RETAIN_COUNT_MAX;
}

- (void)release
{
}

- (void)dealloc
{
	[self doesNotRecognizeSelector: _cmd];
	abort();

	/* Get rid of a stupid warning */
	[super dealloc];
}
@end

@implementation OFConstantString
+ (void)load
{
#if defined(OF_APPLE_RUNTIME) && !defined(__OBJC2__)
	/*
	 * objc_setFutureClass suddenly stopped working as OFConstantString
	 * became more complex. So the only solution is to make
	 * _OFConstantStringClassRerence the actual class, but there is no
	 * objc_initializeClassPair in 10.5.  However, objc_allocateClassPair
	 * does not register the new class with the subclass in the ObjC1
	 * runtime like the ObjC2 runtime does, so this workaround should be
	 * fine.
	 */
	Class class;

	if ((class = objc_allocateClassPair(self, "OFConstantString_hack",
	    0)) == NULL)
		@throw [OFInitializationFailedException
		    exceptionWithClass: self];
	memcpy(&_OFConstantStringClassReference, class,
	    sizeof(_OFConstantStringClassReference));
	free(class);
	objc_registerClassPair((Class)&_OFConstantStringClassReference);
#endif
}

- (void)finishInitialization
{
	@synchronized (self) {
		struct of_string_utf8_ivars *ivars;

		if (object_getClass(self) == [OFString_const class])
			return;

		if ((ivars = calloc(1, sizeof(*ivars))) == NULL)
			@throw [OFOutOfMemoryException
			    exceptionWithRequestedSize: sizeof(*ivars)];

		ivars->cString = _cString;
		ivars->cStringLength = _cStringLength;

		switch (of_string_utf8_check(ivars->cString,
		    ivars->cStringLength,
			&ivars->length)) {
			case 1:
				ivars->isUTF8 = true;
				break;
			case -1:
				free(ivars);
				@throw [OFInvalidEncodingException exception];
		}

		_cString = (char*)ivars;
		object_setClass(self, [OFString_const class]);
	}
}

+ alloc
{
	[self doesNotRecognizeSelector: _cmd];
	abort();
}

- (void*)allocMemoryWithSize: (size_t)size
{
	[self doesNotRecognizeSelector: _cmd];
	abort();
}

- (void*)allocMemoryWithSize: (size_t)size
		       count: (size_t)count
{
	[self doesNotRecognizeSelector: _cmd];
	abort();
}

- (void*)resizeMemory: (void*)pointer
		 size: (size_t)size
{
	[self doesNotRecognizeSelector: _cmd];
	abort();
}

- (void*)resizeMemory: (void*)pointer
		 size: (size_t)size
		count: (size_t)count
{
	[self doesNotRecognizeSelector: _cmd];
	abort();
}

- (void)freeMemory: (void*)pointer
{
	[self doesNotRecognizeSelector: _cmd];
	abort();
}

- retain
{
	return self;
}

- autorelease
{
	return self;
}

- (unsigned int)retainCount
{
	return OF_RETAIN_COUNT_MAX;
}

- (void)release
{
}

- (void)dealloc
{
	[self doesNotRecognizeSelector: _cmd];
	abort();

	/* Get rid of a stupid warning */
	[super dealloc];
}

/*
 * In all following methods, the constant string is converted to an
 * OFString_UTF8 and the message sent again.
 */

/* From protocol OFCopying */
- copy
{
	[self finishInitialization];

	return [self copy];
}

/* From protocol OFMutableCopying */
- mutableCopy
{
	[self finishInitialization];

	return [self mutableCopy];
}

/* From protocol OFComparing */
- (of_comparison_result_t)compare: (id <OFComparing>)object
{
	[self finishInitialization];

	return [self compare: object];
}

/* From OFObject, but reimplemented in OFString */
- (bool)isEqual: (id)object
{
	[self finishInitialization];

	return [self isEqual: object];
}

- (uint32_t)hash
{
	[self finishInitialization];

	return [self hash];
}

- (OFString*)description
{
	[self finishInitialization];

	return [self description];
}

/* From OFString */
- (const char*)UTF8String
{
	[self finishInitialization];

	return [self UTF8String];
}

- (size_t)getCString: (char*)cString_
	   maxLength: (size_t)maxLength
	    encoding: (of_string_encoding_t)encoding
{
	[self finishInitialization];

	return [self getCString: cString_
		      maxLength: maxLength
		       encoding: encoding];
}

- (const char*)cStringWithEncoding: (of_string_encoding_t)encoding
{
	[self finishInitialization];

	return [self cStringWithEncoding: encoding];
}

- (size_t)length
{
	[self finishInitialization];

	return [self length];
}

- (size_t)UTF8StringLength
{
	[self finishInitialization];

	return [self UTF8StringLength];
}

- (size_t)cStringLengthWithEncoding: (of_string_encoding_t)encoding
{
	[self finishInitialization];

	return [self cStringLengthWithEncoding: encoding];
}

- (of_comparison_result_t)caseInsensitiveCompare: (OFString*)otherString
{
	[self finishInitialization];

	return [self caseInsensitiveCompare: otherString];
}

- (of_unichar_t)characterAtIndex: (size_t)index
{
	[self finishInitialization];

	return [self characterAtIndex: index];
}

- (void)getCharacters: (of_unichar_t*)buffer
	      inRange: (of_range_t)range
{
	[self finishInitialization];

	return [self getCharacters: buffer
			   inRange: range];
}

- (of_range_t)rangeOfString: (OFString*)string
{
	[self finishInitialization];

	return [self rangeOfString: string];
}

- (of_range_t)rangeOfString: (OFString*)string
		    options: (int)options
{
	[self finishInitialization];

	return [self rangeOfString: string
			   options: options];
}

- (of_range_t)rangeOfString: (OFString*)string
		    options: (int)options
		      range: (of_range_t)range
{
	[self finishInitialization];

	return [self rangeOfString: string
			   options: options
			     range: range];
}

- (bool)containsString: (OFString*)string
{
	[self finishInitialization];

	return [self containsString: string];
}

- (OFString*)substringWithRange: (of_range_t)range
{
	[self finishInitialization];

	return [self substringWithRange: range];
}

- (OFString*)stringByAppendingString: (OFString*)string
{
	[self finishInitialization];

	return [self stringByAppendingString: string];
}

- (OFString*)stringByAppendingFormat: (OFConstantString*)format
			   arguments: (va_list)arguments
{
	[self finishInitialization];

	return [self stringByAppendingFormat: format
				   arguments: arguments];
}

- (OFString*)stringByAppendingPathComponent: (OFString*)component
{
	[self finishInitialization];

	return [self stringByAppendingPathComponent: component];
}

- (OFString*)stringByPrependingString: (OFString*)string
{
	[self finishInitialization];

	return [self stringByPrependingString: string];
}

- (OFString*)stringByReplacingOccurrencesOfString: (OFString*)string
				       withString: (OFString*)replacement
{
	[self finishInitialization];

	return [self stringByReplacingOccurrencesOfString: string
					       withString: replacement];
}

- (OFString*)stringByReplacingOccurrencesOfString: (OFString*)string
				       withString: (OFString*)replacement
					  options: (int)options
					    range: (of_range_t)range
{
	[self finishInitialization];

	return [self stringByReplacingOccurrencesOfString: string
					       withString: replacement
						  options: options
						    range: range];
}

- (OFString*)uppercaseString
{
	[self finishInitialization];

	return [self uppercaseString];
}

- (OFString*)lowercaseString
{
	[self finishInitialization];

	return [self lowercaseString];
}

- (OFString*)capitalizedString
{
	[self finishInitialization];

	return [self capitalizedString];
}

- (OFString*)stringByDeletingLeadingWhitespaces
{
	[self finishInitialization];

	return [self stringByDeletingLeadingWhitespaces];
}

- (OFString*)stringByDeletingTrailingWhitespaces
{
	[self finishInitialization];

	return [self stringByDeletingTrailingWhitespaces];
}

- (OFString*)stringByDeletingEnclosingWhitespaces
{
	[self finishInitialization];

	return [self stringByDeletingEnclosingWhitespaces];
}

- (bool)hasPrefix: (OFString*)prefix
{
	[self finishInitialization];

	return [self hasPrefix: prefix];
}

- (bool)hasSuffix: (OFString*)suffix
{
	[self finishInitialization];

	return [self hasSuffix: suffix];
}

- (OFArray*)componentsSeparatedByString: (OFString*)delimiter
{
	[self finishInitialization];

	return [self componentsSeparatedByString: delimiter];
}

- (OFArray*)componentsSeparatedByString: (OFString*)delimiter
				options: (int)options
{
	[self finishInitialization];

	return [self componentsSeparatedByString: delimiter
					 options: options];
}

- (OFArray*)pathComponents
{
	[self finishInitialization];

	return [self pathComponents];
}

- (OFString*)lastPathComponent
{
	[self finishInitialization];

	return [self lastPathComponent];
}

- (OFString*)stringByDeletingLastPathComponent
{
	[self finishInitialization];

	return [self stringByDeletingLastPathComponent];
}

- (intmax_t)decimalValue
{
	[self finishInitialization];

	return [self decimalValue];
}

- (uintmax_t)hexadecimalValue
{
	[self finishInitialization];

	return [self hexadecimalValue];
}

- (float)floatValue
{
	[self finishInitialization];

	return [self floatValue];
}

- (double)doubleValue
{
	[self finishInitialization];

	return [self doubleValue];
}

- (const of_unichar_t*)characters
{
	[self finishInitialization];

	return [self characters];
}

- (const of_char16_t*)UTF16String
{
	[self finishInitialization];

	return [self UTF16String];
}

- (const of_char16_t*)UTF16StringWithByteOrder: (of_byte_order_t)byteOrder
{
	[self finishInitialization];

	return [self UTF16StringWithByteOrder: byteOrder];
}

- (size_t)UTF16StringLength
{
	[self finishInitialization];

	return [self UTF16StringLength];
}

- (const of_char32_t*)UTF32String
{
	[self finishInitialization];

	return [self UTF32String];
}

- (const of_char32_t*)UTF32StringWithByteOrder: (of_byte_order_t)byteOrder
{
	[self finishInitialization];

	return [self UTF32StringWithByteOrder: byteOrder];
}

- (void)writeToFile: (OFString*)path
{
	[self finishInitialization];

	return [self writeToFile: path];
}

- (void)writeToFile: (OFString*)path
	   encoding: (of_string_encoding_t)encoding
{
	[self finishInitialization];

	return [self writeToFile: path
			encoding: encoding];
}

#ifdef OF_HAVE_BLOCKS
- (void)enumerateLinesUsingBlock: (of_string_line_enumeration_block_t)block
{
	[self finishInitialization];

	return [self enumerateLinesUsingBlock: block];
}
#endif
@end