/*
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* Copyright 2014 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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@class ZXAztecToken, ZXBitArray, ZXByteArray;
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/**
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* State represents all information about a sequence necessary to generate the current output.
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* Note that a state is immutable.
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*/
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@interface ZXAztecState : NSObject
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// The current mode of the encoding (or the mode to which we'll return if
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// we're in Binary Shift mode.
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@property (nonatomic, assign, readonly) int mode;
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// The list of tokens that we output. If we are in Binary Shift mode, this
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// token list does *not* yet included the token for those bytes
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@property (nonatomic, strong, readonly) ZXAztecToken *token;
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// If non-zero, the number of most recent bytes that should be output
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// in Binary Shift mode.
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@property (nonatomic, assign, readonly) int binaryShiftByteCount;
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// The total number of bits generated (including Binary Shift).
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@property (nonatomic, assign, readonly) int bitCount;
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- (id)initWithToken:(ZXAztecToken *)token mode:(int)mode binaryBytes:(int)binaryBytes bitCount:(int)bitCount;
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+ (ZXAztecState *)initialState;
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- (ZXAztecState *)latchAndAppend:(int)mode value:(int)value;
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- (ZXAztecState *)shiftAndAppend:(int)mode value:(int)value;
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- (ZXAztecState *)addBinaryShiftChar:(int)index;
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- (ZXAztecState *)endBinaryShift:(int)index;
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- (BOOL)isBetterThanOrEqualTo:(ZXAztecState *)other;
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- (ZXBitArray *)toBitArray:(ZXByteArray *)text;
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@end
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