First commitHEADmaster

1 files changed, 139 insertions, 0 deletions

diff --git a/SBJsonStreamWriterState.m b/SBJsonStreamWriterState.m
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--- /dev/null
+++ b/SBJsonStreamWriterState.m
@@ -0,0 +1,139 @@
+/*
+ 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
+