/** * ...something resembling a binary search, to find the lowest line within the range. * And then you could break as soon as the line is longer than the range... */ module.exports.sliceRange = (lines, startCol, endCol, inclusive = false) => { let start = 0 let end = lines.length - 1 /** * I consider this a temporary solution until I find an alternaive way to fix the "off by one issue" */ const extStartCol = inclusive ? startCol - 1 : startCol while (start < end) { const mid = (start + end) >> 1 if (lines[mid].startCol <= startCol && lines[mid].endCol > extStartCol) { start = mid end = start } else if (lines[mid].startCol > startCol) { end = mid - 1 } else { start = mid + 1 } } if (start === end) { while (end < lines.length && extStartCol < lines[end].endCol && endCol >= lines[end].startCol) { ++end } return lines.slice(start, end) } else { return [] } }