/** * ...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 if (inclusive) { // I consider this a temporary solution until I find an alternaive way to fix the "off by one issue" --startCol } while (start < end) { let mid = (start + end) >> 1 if (startCol >= lines[mid].endCol) { start = mid + 1 } else if (endCol < lines[mid].startCol) { end = mid - 1 } else { end = mid while (mid >= 0 && startCol < lines[mid].endCol && endCol >= lines[mid].startCol) { --mid } start = mid + 1 break } } while (end < lines.length && startCol < lines[end].endCol && endCol >= lines[end].startCol) { ++end } return lines.slice(start, end) }