gistfile1.txt

//  Struct handler from an @encode() string parser for a debug printer.

#import <objc/runtime.h> // For @encode syntax constants.


static void DecodeStruct(const char * const encoding, size_t * const cursor, const void ** const buffer, NSMutableString *string)
{
	NSCParameterAssert(encoding != NULL && encoding[*cursor] == _C_STRUCT_B && cursor != NULL && buffer != NULL);
	
#if INCLUDE_STRUCT_NAMES
	size_t nameStart = *cursor + 1;
#endif
	
	while (encoding[*cursor] != '=')
	{
		(*cursor)++;
		ASSERT_NOT_END_OF_ENCODING(encoding, cursor);
	}
	
#if INCLUDE_STRUCT_NAMES
	size_t nameLength = *cursor - nameStart;
	if (nameLength != 1 || encoding[nameStart] != '\?')
	{
		NSString *name = [[NSString alloc] initWithBytes:encoding + nameStart
												  length:nameLength
												encoding:NSUTF8StringEncoding];
		if (name != nil)
		{
			[string appendFormat:@"(%@)", name];
			[name release];
		}
	}
#endif
	
	// Skip "="
	(*cursor)++;
	ASSERT_NOT_END_OF_ENCODING(encoding, cursor);
	
	[string appendString:@"{"];
	BOOL first = YES;
	
	while (encoding[*cursor] != _C_STRUCT_E)
	{
		if (!first)
		{
			[string appendString:@", "];
		}
		else
		{
			first = NO;
		}
		
		DecodeValue(encoding, cursor, buffer, string);
	}
	
	[string appendString:@"}"];
}