export class TextCursor{constructor(lineEndings){this._lineEndings=lineEndings;this._offset=0;this._lineNumber=0;this._columnNumber=0;}
advance(offset){this._offset=offset;while(this._lineNumber<this._lineEndings.length&&this._lineEndings[this._lineNumber]<this._offset){++this._lineNumber;}
this._columnNumber=this._lineNumber?this._offset-this._lineEndings[this._lineNumber-1]-1:this._offset;}
offset(){return this._offset;}
resetTo(offset){this._offset=offset;this._lineNumber=this._lineEndings.lowerBound(offset);this._columnNumber=this._lineNumber?this._offset-this._lineEndings[this._lineNumber-1]-1:this._offset;}
lineNumber(){return this._lineNumber;}
columnNumber(){return this._columnNumber;}}