| /* |
| Copyright (c) 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 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 |
| HOLDER 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. |
| */ |
| |
| #import "SBJsonStreamWriterState.h" |
| #import "SBJsonStreamWriter.h" |
| |
| #define SINGLETON \ |
| + (id)sharedInstance { \ |
| static id state; \ |
| if (!state) state = [[self alloc] init]; \ |
| return state; \ |
| } |
| |
| |
| @implementation SBJsonStreamWriterState |
| + (id)sharedInstance { return nil; } |
| - (BOOL)isInvalidState:(SBJsonStreamWriter*)writer { return NO; } |
| - (void)appendSeparator:(SBJsonStreamWriter*)writer {} |
| - (BOOL)expectingKey:(SBJsonStreamWriter*)writer { return NO; } |
| - (void)transitionState:(SBJsonStreamWriter *)writer {} |
| - (void)appendWhitespace:(SBJsonStreamWriter*)writer { |
| [writer appendBytes:"\n" length:1]; |
| for (NSUInteger i = 0; i < writer.stateStack.count; i++) |
| [writer appendBytes:" " length:2]; |
| } |
| @end |
| |
| @implementation SBJsonStreamWriterStateObjectStart |
| |
| SINGLETON |
| |
| - (void)transitionState:(SBJsonStreamWriter *)writer { |
| writer.state = [SBJsonStreamWriterStateObjectValue sharedInstance]; |
| } |
| - (BOOL)expectingKey:(SBJsonStreamWriter *)writer { |
| writer.error = @"JSON object key must be string"; |
| return YES; |
| } |
| @end |
| |
| @implementation SBJsonStreamWriterStateObjectKey |
| |
| SINGLETON |
| |
| - (void)appendSeparator:(SBJsonStreamWriter *)writer { |
| [writer appendBytes:"," length:1]; |
| } |
| @end |
| |
| @implementation SBJsonStreamWriterStateObjectValue |
| |
| SINGLETON |
| |
| - (void)appendSeparator:(SBJsonStreamWriter *)writer { |
| [writer appendBytes:":" length:1]; |
| } |
| - (void)transitionState:(SBJsonStreamWriter *)writer { |
| writer.state = [SBJsonStreamWriterStateObjectKey sharedInstance]; |
| } |
| - (void)appendWhitespace:(SBJsonStreamWriter *)writer { |
| [writer appendBytes:" " length:1]; |
| } |
| @end |
| |
| @implementation SBJsonStreamWriterStateArrayStart |
| |
| SINGLETON |
| |
| - (void)transitionState:(SBJsonStreamWriter *)writer { |
| writer.state = [SBJsonStreamWriterStateArrayValue sharedInstance]; |
| } |
| @end |
| |
| @implementation SBJsonStreamWriterStateArrayValue |
| |
| SINGLETON |
| |
| - (void)appendSeparator:(SBJsonStreamWriter *)writer { |
| [writer appendBytes:"," length:1]; |
| } |
| @end |
| |
| @implementation SBJsonStreamWriterStateStart |
| |
| SINGLETON |
| |
| |
| - (void)transitionState:(SBJsonStreamWriter *)writer { |
| writer.state = [SBJsonStreamWriterStateComplete sharedInstance]; |
| } |
| - (void)appendSeparator:(SBJsonStreamWriter *)writer { |
| } |
| @end |
| |
| @implementation SBJsonStreamWriterStateComplete |
| |
| SINGLETON |
| |
| - (BOOL)isInvalidState:(SBJsonStreamWriter*)writer { |
| writer.error = @"Stream is closed"; |
| return YES; |
| } |
| @end |
| |
| @implementation SBJsonStreamWriterStateError |
| |
| SINGLETON |
| |
| @end |
| |