TDBlobState.m

//  Copyright 2010 Todd Ditchendorf
//
//  Licensed under the Apache License, Version 2.0 (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//
//  http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.

#import "TDBlobState.h"
#import <ParseKit/PKToken.h>
#import <ParseKit/PKReader.h>
#import "PKToken+Blob.h"

@interface PKToken ()
@property (nonatomic, readwrite) NSUInteger offset;
@end

@interface PKTokenizerState ()
- (void)resetWithReader:(PKReader *)r;
- (void)append:(PKUniChar)c;
- (NSString *)bufferedString;
@end

@implementation TDBlobState

- (PKToken *)nextTokenFromReader:(PKReader *)r startingWith:(PKUniChar)cin tokenizer:(PKTokenizer *)t {
    NSParameterAssert(r);
    [self resetWithReader:r];
    
    PKUniChar c = cin;
    do {
        [self append:c];
        c = [r read];
    } while (PKEOF != c && !isspace(c));
    
    if (PKEOF != c) {
        [r unread];
    }
    
    PKToken *tok = [PKToken tokenWithTokenType:PKTokenTypeBlob stringValue:[self bufferedString] floatValue:0.0];
    tok.offset = offset;
    return tok;
}

@end