nl_tokens: / *
pl_tokens: function computeLineAndCharacterOfPosition ( lineStarts , position ) { var lineNumber = ts . binarySearch ( lineStarts , position ) ; if ( lineNumber < 0 ) { // If the actual position was not found, // the binary search returns the 2's-complement of the next line start // e.g. if the line starts at [5, 10, 23, 80] and the position requested was 20 // then the search will return -2. // // We want the index of the previous line start, so we subtract 1. // Review 2's-complement if this is confusing. lineNumber = ~ lineNumber - 1 ; ts . Debug . assert ( lineNumber !== - 1 , "position cannot precede the beginning of the file" ) ; } return { <mask> : lineNumber , character : position - lineStarts [ lineNumber ] } ; }