src/vs/editor/common/model/pieceTreeTextBuffer/pieceTreeTextBufferBuilder.ts/PieceTreeTextBufferBuilder/constructor
class PieceTreeTextBufferBuilder:	constructor() {
		this.chunks = [];
		this.BOM = '';

		this._hasPreviousChar = false;
		this._previousChar = 0;
		this._tmpLineStarts = [];

		this.cr = 0;
		this.lf = 0;
		this.crlf = 0;
		this.containsRTL = false;
		this.containsUnusualLineTerminators = false;
		this.isBasicASCII = true;
	}