Synnefo » Pithos MacOS & iOS Common Lib

/*

 Copyright (C) 2009,2010 Stig Brautaset. All rights reserved.

 Redistribution and use in source and binary forms, with or without

 modification, are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice, this

   list of conditions and the following disclaimer.

 * Redistributions in binary form must reproduce the above copyright notice,

   this list of conditions and the following disclaimer in the documentation

   and/or other materials provided with the distribution.

 * Neither the name of the author nor the names of its contributors may be used

   to endorse or promote products derived from this software without specific

   prior written permission.

 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE

 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER

 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#if !__has_feature(objc_arc)

#error "This source file must be compiled with ARC enabled!"

#endif

#import "SBJsonParser.h"

#import "SBJsonStreamParser.h"

#import "SBJsonStreamParserAdapter.h"

#import "SBJsonStreamParserAccumulator.h"

@implementation SBJsonParser

@synthesize maxDepth;

@synthesize error;

- (id)init {

    self = [super init];

    if (self)

        self.maxDepth = 32u;

    return self;

}

#pragma mark Methods

- (id)objectWithData:(NSData *)data {

    if (!data) {

        self.error = @"Input was 'nil'";

        return nil;

    }

	SBJsonStreamParserAccumulator *accumulator = [[SBJsonStreamParserAccumulator alloc] init];

    SBJsonStreamParserAdapter *adapter = [[SBJsonStreamParserAdapter alloc] init];

    adapter.delegate = accumulator;

	SBJsonStreamParser *parser = [[SBJsonStreamParser alloc] init];

	parser.maxDepth = self.maxDepth;

	parser.delegate = adapter;

	switch ([parser parse:data]) {

		case SBJsonStreamParserComplete:

            return accumulator.value;

			break;

		case SBJsonStreamParserWaitingForData:

		    self.error = @"Unexpected end of input";

			break;

		case SBJsonStreamParserError:

		    self.error = parser.error;

			break;

	}

	return nil;

}

- (id)objectWithString:(NSString *)repr {

	return [self objectWithData:[repr dataUsingEncoding:NSUTF8StringEncoding]];

}

- (id)objectWithString:(NSString*)repr error:(NSError**)error_ {

	id tmp = [self objectWithString:repr];

    if (tmp)

        return tmp;

    if (error_) {

		NSDictionary *ui = [NSDictionary dictionaryWithObjectsAndKeys:error, NSLocalizedDescriptionKey, nil];

        *error_ = [NSError errorWithDomain:@"org.brautaset.SBJsonParser.ErrorDomain" code:0 userInfo:ui];

	}

    return nil;

}

@end