• _max_print_height : HuffmanTree
• bitsMap : HuffmanTree
• currentBit : BinaryFileReader , BinaryFileWriter
• currentByte : BinaryFileReader , BinaryFileWriter
• file : BinaryFileReader , BinaryFileWriter
• freq : HuffmanTree::TreeNode
• left : HuffmanTree::TreeNode
• maxBytes : BinaryFileReader
• numRead : BinaryFileReader
• paddingBits : BinaryFileReader
• right : HuffmanTree::TreeNode
• root : HuffmanTree