package main import math "core:math" import "core:fmt" import "core:os" import "core:strings" import "core:strconv" import "core:slice" import "core:sort" // // --- STRUCTURES --- // Weekday :: enum{ Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday, } Delta :: struct { minutes : int, hours : int, days : int, } Moment :: struct { minutes : int, hours : int, day : int, month : int, year : int, } Timeblock :: struct { start : Moment, end : Moment, value : f32, reason : string, } Fractionpair :: struct { start : f32, end : f32, } Workday :: struct { call : Moment, wrap : Moment, planned_wrap : Moment, // blocks is over 12, // because lunch breaks // cause more blocks blocks : [16]Timeblock, // Fractions store how long // since the workday's // preceding midnight // a timesplit occurs. // They're pairs so they // can exactly map to each // timeblock's start and end fractions : [16]Fractionpair, total_timeblocks : int, price: f32, } // // --- MAJOR PROCEDURES --- // new_workday :: proc(previous_wrap : Moment, calltime : Moment, wraptime : Moment, planned_wraptime : Moment) -> (workday: Workday) { workday.call = calltime workday.wrap = wraptime workday.planned_wrap = planned_wraptime using workday initial_block: Timeblock = {call, // Paragraph 6.7 says that up to 2 hours of unused warned overtime counts as worktime, // though so that at least one hour of the unused overtime is not counted. // (It's unclear if an 8-hour day that ends 3 hours in counts as having 5 hours of unused overtime) time_max(time_clamp(sub(planned_wrap, {0, 1, 0}), wrap, add(wrap, {0, 2, 0})), add(call, {0, 4, 0})), 1, ""} // ^ Minimum 4 hour day ^ // BUG: I think this is causing a bug where if the day ends at 6 and gets extended, // it doesn't split the day at 6 and set the work-time before that to be extra expensive sp_length :: 11 splitpoints:= [sp_length]Moment{ // --$-- Points where the price may change --$-- // // TODO: Replace this terribleness with a system for parsing simple, user-editable rulseset-files add(previous_wrap, {0, 10, 0}), // Sleepbreach, 10 hours after previous wrap, aka. turnover {0, 5, call.day, call.month, call.year}, // 2 hours before 7, aka 5 {0, 6, call.day, call.month, call.year}, // 6 in the morning add(call, {0, 8, 0}), // Normal 8 hours of work add(call, {0, 9, 0}), // 1st hour of overtime is over add(call, {0, 11, 0}), // 3rd hour of overtime is over planned_wraptime, // End of warned overtime add(call, {0, 14, 0}), // The 14-hour mark {0, 22, call.day, call.month, call.year}, // 22:00 in the evening add({0, 23, call.day, call.month, call.year}, {0, 1, 0}), // Midnight add({0, 23, call.day, call.month, call.year}, {0, 7, 0}), // 06:00 the next morning } // Eliminate planned wrap, if it occurs within normal 8-hour period. // This is to make sure the first period of time becomes a pure 8 hours, // which makes detecting the main section of the workday easier. if sortable(splitpoints[6]) < sortable(splitpoints[3]) { splitpoints[6] = splitpoints[3]; } splitpoints_sorted: [sp_length]Moment = splitpoints slice.sort_by(splitpoints_sorted[:], lessMoment) for each_point, i in splitpoints_sorted { fmt.printf("Splitpoint %2i: %s\n", i+1, toString(each_point)) } working_block: Timeblock = initial_block fmt.println("working_block: ", toString(working_block)) j: int = 0 for each_point in splitpoints_sorted { // If each splitpoint moment is within the workday, and is not equal to the start of the current block if sortable(each_point) > sortable(call) && // vvvvvvvvvvvvvvvvvvvvvvvv this complication is here to cover sortable(each_point) < sortable(time_max(wrap, add(call, {0, 4, 0}))) && // for the 4-hour minimum day. each_point != working_block.start { blocks[j], working_block = timesplit(working_block, each_point) j += 1 //fmt.println("Split and wrote:", j) } } blocks[j] = working_block j += 1 total_timeblocks = j // This line is commented out because it shouldn't be needed. //slice.sort_by(blocks[:], lessTimeblock) fmt.println(total_timeblocks) for block, i in &blocks { if i >= total_timeblocks do break //using Weekday if lessEq(block.end, splitpoints[0]) do upvalue(&block, 3, "Sleep-breach") // +200% for sleep-breach if block.start.hours >= 22 do upvalue(&block, 2, "Night") // Work at night, aka. between 22:00 and 06:00 if (block.end.hours == 6 && block.end.minutes == 0) || block.end.hours <= 5 do upvalue(&block, 2, "Night") // is +100% if greatEq(block.start, splitpoints[3]) { upvalue(&block, 1.5, "Overtime") if getweekday(block.start) == .Saturday do upvalue(&block, 2, "Saturday Overtime") } if greatEq(block.start, splitpoints[5]) do upvalue(&block, 2, "Overtime") // End of 3-hour cheap planned overtime if greatEq(block.start, planned_wrap) && greatEq(block.start, splitpoints[4]) do upvalue(&block, 2, "Overtime") // Unwarned OT if greatEq(block.start, splitpoints[7]) do upvalue(&block, 3, "Far overtime") // +200% beyond 14th hours is +100% if getweekday(block.start) == .Saturday do upvalue(&block, 1.5, "Saturday") // Saturdays are +50% if getweekday(block.start) == .Sunday do upvalue(&block, 2, "Sunday") // Sundays are +100% if !(less(call, Moment{0, 7, call.day, call.month, call.year}) && less(time_min(add(call, Delta{0,8,0}), wrap), Moment{0, 17, call.day, call.month, call.year} )) { // This was added for rule 6.11c, but in a world without a defined normal workday, // that rule is already covered already by 6.11g, so this is empty. } // Holidays! if (block.start.day==1) && (block.start.month==1) { upvalue(&block, 2, "New year"); continue} if (block.start.day==1) && (block.start.month==5) { upvalue(&block, 2, "1st of May"); continue} if (block.start.day==17) && (block.start.month==5) { upvalue(&block, 2, "17th of May"); continue} if (block.start.day==25 || block.start.day==26) && block.start.month==12 { upvalue(&block, 2, "Christmas"); continue} easter: Moment = gaussEaster(block.start.year) if (block.start.day == sub(easter, {0,0,3}).day) && block.start.month == sub(easter, {0,0,3}).month { upvalue(&block, 2, "Maundy Thursday"); continue} if (block.start.day == sub(easter, {0,0,2}).day) && block.start.month == sub(easter, {0,0,2}).month { upvalue(&block, 2, "Good Friday"); continue} if (block.start.day == easter.day) && (block.start.month == easter.month) { upvalue(&block, 2, "Easter"); continue} if (block.start.day == add(easter, {0,0,1}).day) && (block.start.month == add(easter, {0,0,1}).month) { upvalue(&block, 2, "Easter"); continue} if (block.start.day == add(easter, {0,0,39}).day) && (block.start.month == add(easter, {0,0,39}).month) { upvalue(&block, 2, "Feast of the Ascension"); continue} if (block.start.day == add(easter, {0,0,49}).day) && (block.start.month == add(easter, {0,0,49}).month) { upvalue(&block, 2, "Pentecost"); continue} if (block.start.day == add(easter, {0,0,50}).day) && (block.start.month == add(easter, {0,0,50}).month) { upvalue(&block, 2, "Pentecost Monday"); continue} } for each_block, i in blocks { fmt.printf("Block %2i: %s $f: %i%% %s\n", i+1, toString(each_block), int((each_block.value-1)*100), each_block.reason) price += f32(f64(dayrate/7.5) * f64(hourcount(each_block)) * f64(each_block.value)) } return } lunch :: proc(workday: ^Workday, lunch_start: Moment, lunch_end: Moment) { // // This basically cuts out part of the workday // // |-------|---|-------|----|---------|--------------| // |--lunch--| // |-------|---|----| |-------|--------------| // This ^ works now! if lunch_start == lunch_end do return assert(less(lunch_start, lunch_end), "ERROR: Bad Lunch! Lunch ends before it starts") start_index: int end_index: int for block, i in workday.blocks { if (great(lunch_start, block.start) && less(lunch_start, block.end)) || (block.start == lunch_start) { start_index = i } if (great(lunch_end, block.start) && less(lunch_end, block.end)) || (block.end == lunch_end) { end_index = i } } assert(start_index <= end_index, "ERROR: Bad Lunch! start_index greater than end_index") span: int = end_index - start_index // TODO: This is bad and can definitely be simplified and done in a more principled way // But right now it works perfectly, and is much better than it used to be in the C++ version switch span { case 0: fmt.println("Start and end are in the same block") switch { case (lunch_start == workday.blocks[start_index].start) && (lunch_end == workday.blocks[end_index].end): popBlock(workday, start_index) case lunch_start == workday.blocks[start_index].start: workday.blocks[start_index].start = lunch_end case lunch_end == workday.blocks[end_index].end: workday.blocks[end_index].end = lunch_start case: growBlocks(workday, start_index) end_index += 1 workday.blocks[start_index].end = lunch_start workday.blocks[end_index].start = lunch_end } case 1: fmt.println("Start and end span one gap") switch { case (lunch_start == workday.blocks[start_index].start) && (lunch_end == workday.blocks[end_index].end): popBlock(workday, start_index, 2) case lunch_start == workday.blocks[start_index].start: workday.blocks[end_index].start = lunch_end popBlock(workday, start_index) case lunch_end == workday.blocks[end_index].end: workday.blocks[start_index].end = lunch_start popBlock(workday, end_index) case: workday.blocks[end_index].start = lunch_end workday.blocks[start_index].end = lunch_start } case 2..=len(workday.blocks): fmt.println("Start and end span more than one gap") switch { case (lunch_start == workday.blocks[start_index].start) && (lunch_end == workday.blocks[end_index].end): popBlock(workday, start_index, span+1) case lunch_start == workday.blocks[start_index].start: workday.blocks[end_index].start = lunch_end popBlock(workday, start_index, span) case lunch_end == workday.blocks[end_index].end: workday.blocks[start_index].end = lunch_start popBlock(workday, start_index+1, span) case: workday.blocks[end_index].start = lunch_end workday.blocks[start_index].end = lunch_start popBlock(workday, start_index+1, span-1) } } } windIndividual :: proc(input_moment: ^Moment, minutes: int, hours: int, days: int) { // Adding minutes input_moment.minutes += minutes for input_moment.minutes > 59 { input_moment.minutes -= 60 input_moment.hours += 1 } for input_moment.minutes < 0 { input_moment.minutes += 60 input_moment.hours -= 1 } // Adding hours input_moment.hours += hours for input_moment.hours > 23 { input_moment.hours -= 24 input_moment.day += 1 } for input_moment.hours < 0 { input_moment.hours += 24 input_moment.day -= 1 } // Adding days input_moment.day += days current_month_length: int = days_in(input_moment.month, input_moment.year) for input_moment.day > current_month_length { input_moment.day -= current_month_length input_moment.month += 1 if input_moment.month > 12 { input_moment.month -= 12 input_moment.year += 1 } current_month_length = days_in(input_moment.month, input_moment.year) } for input_moment.day < 1 { input_moment.month -= 1 if input_moment.month < 1 { input_moment.month += 12 input_moment.year -= 1 } current_month_length = days_in(input_moment.month, input_moment.year) input_moment.day += current_month_length } return } windByDelta :: proc(moment: ^Moment, delta: Delta) { using delta wind(moment, minutes, hours, days) return } wind :: proc{windIndividual, windByDelta} timesplit :: proc(block: Timeblock, splitpoint: Moment) -> (first_half: Timeblock, second_half: Timeblock) { // Splits a timeblock at splitpoint. if sortable(splitpoint) < sortable(block.start) || sortable(splitpoint) > sortable(block.end) || splitpoint == block.start || splitpoint == block.end { fmt.println("WHOOPS: Splitpoint is outside timeblock range!") fmt.println("Timeblock:", toString(block)) fmt.println("Splitpoint:", toString(splitpoint)) second_half = block return } first_half = {block.start, splitpoint, block.value, block.reason} second_half = {splitpoint, block.end, block.value, block.reason} return } upvalue :: proc(input_block: ^Timeblock, value: f32, reason: string) { block: ^Timeblock = input_block if value > block.value { block.value = value block.reason = reason } } importICS :: proc(path: string, verbose: bool = false) -> ([dynamic]Timeblock, bool) { output: [dynamic]Timeblock c : Timeblock raw, ok := os.read_entire_file_from_filename(path) content := string(raw) i := 1 line_nr := 1 if !ok { // TODO: Actually check the content to see if it is an ICS file. fmt.eprintf("ERROR: No file found at: \"%v\"", path) return output, false } for line in strings.split_lines_iterator(&content) { // BUG: This assumes that there will never be a line shorter than 10. // That means this will try reading out of bounds at some point. if line[0:10]=="DTSTART;TZ" { // grab the timestamp from the end of the line, and set start to it ll := len(line) if verbose do fmt.println("Found a DTSTART!") if verbose do fmt.println("length of line:", ll) if verbose do fmt.println(line) date_start : int if verbose do fmt.printf("Time: %s:%s\n", line[ll-6:ll-4], line[ll-4:ll-2]) if verbose do fmt.printf("Hours: %s\n", line[ll-6:ll-4]) c.start.hours = strconv.atoi(line[ll-6:ll-4]) if verbose do fmt.printf("Minutes: %s\n", line[ll-4:ll-2]) c.start.minutes = strconv.atoi(line[ll-4:ll-2]) if verbose do fmt.printf("Day: %s\n", line[ll-9:ll-7]) c.start.day = strconv.atoi(line[ll-9:ll-7]) if verbose do fmt.printf("Month: %s\n", line[ll-11:ll-9]) c.start.month = strconv.atoi(line[ll-11:ll-9]) if verbose do fmt.printf("Year: %s\n", line[ll-15:ll-11]) c.start.year = strconv.atoi(line[ll-15:ll-11]) } if line[0:5]=="DTEND" { // grab the timestamp from the end of the line, and set end to it ll := len(line) if verbose do fmt.println("Found a DTEND!") if verbose do fmt.println(line) if verbose do fmt.printf("Time: %s:%s\n", line[ll-6:ll-4], line[ll-4:ll-2]) if verbose do fmt.printf("Hours: %s\n", line[ll-6:ll-4]) c.end.hours = strconv.atoi(line[ll-6:ll-4]) if verbose do fmt.printf("Minutes: %s\n", line[ll-4:ll-2]) c.end.minutes = strconv.atoi(line[ll-4:ll-2]) if verbose do fmt.printf("Day: %s\n", line[ll-9:ll-7]) c.end.day = strconv.atoi(line[ll-9:ll-7]) if verbose do fmt.printf("Month: %s\n", line[ll-11:ll-9]) c.end.month = strconv.atoi(line[ll-11:ll-9]) if verbose do fmt.printf("Year: %s\n", line[ll-15:ll-11]) c.end.year = strconv.atoi(line[ll-15:ll-11]) } // TODO: This is checking if the years are 0 to make sure it hasn't read from // from a line containing "DTSTART;VALUE" instead of "DTSTART;TZID" // VALUE days are events that are set to last the entire day, // as opposed to having a defined start and end point. // // This should eventually not be needed, because these days // should also be imported based on the session's default-day settings if line=="END:VEVENT" && (c.end.year != 0) && (c.start.year != 0) { if verbose do fmt.println(line) c.value = 1 append(&output, c) blank_timeblock: Timeblock c = blank_timeblock if verbose do fmt.println("\n\n", i, line_nr, "\n\n") i += 1 } line_nr += 1 } return output, true } // // --- BASIC OPERATIONS --- // add :: proc(moment: Moment, delta: Delta) -> (output: Moment) { output = moment wind(&output, delta) return } sub :: proc(moment: Moment, delta: Delta) -> (output: Moment) { output = moment using delta wind(&output, minutes*-1, hours*-1, days*-1) return } maxMoment :: proc(moment_a: Moment, moment_b: Moment) -> Moment { if sortable(moment_a) > sortable(moment_b) do return moment_a return moment_b } maxDelta :: proc(delta_a: Delta, delta_b: Delta) -> Delta { if sortable(delta_a) > sortable(delta_b) do return delta_a return delta_b } time_max :: proc{maxDelta, maxMoment} minMoment :: proc(moment_a: Moment, moment_b: Moment) -> Moment { if sortable(moment_a) < sortable(moment_b) do return moment_a return moment_b } minDelta :: proc(delta_a: Delta, delta_b: Delta) -> Delta { if sortable(delta_a) < sortable(delta_b) do return delta_a return delta_b } time_min :: proc{minDelta, minMoment} clampMoment :: proc(moment: Moment, moment_min: Moment, moment_max: Moment) -> Moment { return time_min(time_max(moment, moment_min), moment_max) } clampDelta :: proc(delta: Delta, delta_min: Delta, delta_max: Delta) -> Delta { return time_min(time_max(delta, delta_min), delta_max) } time_clamp :: proc{clampMoment, clampDelta} greatMoment :: proc(moment_a: Moment, moment_b: Moment) -> bool { return bool(sortable(moment_a) > sortable(moment_b)) } greatDelta :: proc(delta_a: Delta, delta_b: Delta) -> bool { return bool(sortable(delta_a) > sortable(delta_b)) } great :: proc{greatMoment, greatDelta} lessMoment :: proc(moment_a: Moment, moment_b: Moment) -> bool { return bool(sortable(moment_a) < sortable(moment_b)) } lessDelta :: proc(delta_a: Delta, delta_b: Delta) -> bool { return bool(sortable(delta_a) < sortable(delta_b)) } lessTimeblock :: proc(block_a: Timeblock, block_b: Timeblock) -> bool { if block_b.start == {0, 0, 0, 0, 0} do return true if block_a.start == {0, 0, 0, 0, 0} do return false return bool(sortable(block_a.start) < sortable(block_b.start)) } lessWorkday :: proc(day_a: Workday, day_b: Workday) -> bool { return bool(sortable(day_a.call) < sortable(day_b.call)) } lessWorkdayPtr :: proc(day_a: ^Workday, day_b: ^Workday) -> bool { return bool(sortable(day_a.call) < sortable(day_b.call)) } less :: proc{lessMoment, lessDelta, lessTimeblock, lessWorkday} lessEqMoment :: proc(moment_a: Moment, moment_b: Moment) -> bool { return moment_a==moment_b || less(moment_a, moment_b) } lessEq :: proc{lessEqMoment} greatEqMoment :: proc(moment_a: Moment, moment_b: Moment) -> bool { return moment_a == moment_b || great(moment_a, moment_b) } greatEq :: proc{greatEqMoment} diff :: proc(moment_a: Moment, moment_b: Moment) -> (acc: Delta) { // FIXME: This seems to cause either infinite loops or crashes sometimes // Uses what I call an accumulator-decumulator design // Count how long it takes to approach a benchmark, // and that count is the difference acc = {0, 0, 0} if moment_a == moment_b do return // smallest operand becomes benchmark to approach reverse: bool = sortable(moment_a) < sortable(moment_b) bench : Moment dec : Moment if reverse { bench = moment_a dec = moment_b } else { bench = moment_b dec = moment_a } // It is possible to write something that does this in months at a time, instead of days, // which would be faster, but I am not expecting to have to do this with such // long periods of time, so screw that. for ((dec.year - bench.year) > 1 || (dec.month - bench.month) > 1 || (dec.day - bench.day) > 1) { wind(&dec, 0, 0, -1) acc.days += 1 } for (dec.hours - bench.hours > 1) { wind(&dec, 0, -1, 0) acc.hours += 1 } for acc.hours > 23 { acc.hours -= 24 acc.days += 1 } for dec != bench { wind(&dec, -1, 0, 0) acc.minutes += 1 } for acc.minutes > 59 { acc.minutes -= 60 acc.hours += 1 } // Repeating this is a little bit ugly, but it works for acc.hours > 23 { acc.hours -= 24 acc.days += 1 } return } sortableTimeDelta :: proc(delta: Delta) -> (output: u64) { using delta output, _ = strconv.parse_u64(fmt.tprintf("1%3i%2i%2i", days, hours, minutes)) return } sortableTimeMoment :: proc(moment: Moment) -> (output: u64) { using moment output, _ = strconv.parse_u64(fmt.tprintf("%4i%2i%2i%2i%2i", year, month, day, hours, minutes)) return } sortable :: proc{sortableTimeMoment, sortableTimeDelta} deltaToString :: proc(delta: Delta) -> (output: string) { using delta if hours == 0 && days == 0 && minutes == 0 { return "None" } cat_array : [dynamic]string printed_prev : bool = false if days>0 { buf: [5]byte append(&cat_array, fmt.tprint(days)) if days < 2 { append(&cat_array, " day") } else { append(&cat_array, " days") } printed_prev = true } if hours>0 { if printed_prev do append(&cat_array, ", ") buf: [5]byte append(&cat_array, fmt.tprint(hours)) if hours < 2 { append(&cat_array, " hour") } else { append(&cat_array, " hours") } printed_prev = true } if minutes>0 { if printed_prev do append(&cat_array, ", ") buf: [5]byte append(&cat_array, fmt.tprint(minutes)) if minutes < 2 { append(&cat_array, " minute") } else { append(&cat_array, " minutes") } } output = strings.concatenate(cat_array[:]) return } momentToString :: proc(moment: Moment) -> (output: string) { using moment cat_array: [dynamic]string output = fmt.tprintf("%4i-%2i-%2i %2i:%2i", year, month, day, hours, minutes) return } timeblockToString :: proc(block: Timeblock) -> (output: string) { using block s: [3]string = {toString(start), " -> ", toString(end)} output = strings.concatenate(s[:]) return } toString :: proc{deltaToString, momentToString, timeblockToString} clockprintMoment :: proc(moment: Moment) -> string { using moment return fmt.tprintf("%2i:%2i", hours, minutes) } clockprintTimeblock :: proc(block: Timeblock) -> string { using block return fmt.tprintf("%s -> %s", clockprint(start), clockprint(end)) } clockprint :: proc{clockprintTimeblock, clockprintMoment} dayprintMoment :: proc(moment: Moment) -> string { using moment return fmt.tprintf("%4i-%2i-%2i", year, month, day) } dayprintTimeblock :: proc(block: Timeblock) -> string { using block return fmt.tprintf("%s -> %s", dayprint(start), dayprint(end)) } dayprint :: proc{dayprintTimeblock, dayprintMoment} popBlock :: proc(workday: ^Workday, index: int, count: int = 1) { using workday when ODIN_DEBUG do fmt.printf("popBlock() running to remove %i block(s) from index %i\n", count, index) for i in index..=index; i-=1 { fmt.printf("Putting the contents of %i/%i into %i\n", i+count, len(blocks)-1, i) blocks[i+count] = blocks[i] } //for i in index.. Weekday { y: int = moment.year t: []int = { 0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4 } y -= int(moment.month < 3) return Weekday((y + y / 4 - y / 100 + y / 400 + t[moment.month - 1] + moment.day - 1) % 7) } hourcount :: proc(block: Timeblock) -> f32 { using block delta: Delta = diff(end, start) using delta return f32(f32(minutes)/60 + f32(hours) + f32(days) * 24) } daycount :: proc(delta: Delta) -> f32 { using delta assert(delta != {0,0,0}) return f32(f32(minutes)/60/24 + f32(hours)/24 + f32(days) ) } days_in :: proc(month: int, year: int) -> int { switch month { case 1: return 31; case 2: if (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0)){ return 29; } return 28; case 3: return 31; case 4: return 30; case 5: return 31; case 6: return 30; case 7: return 31; case 8: return 31; case 9: return 30; case 10: return 31; case 11: return 30; case 12: return 31; } fmt.printf("You just found month nr: %i. Something is very wrong.\n", month) fmt.assertf(month < 13 && month > 0, "You tried to get the days in month %i!\n", month) return 30 } gaussEaster :: proc(year: int) -> Moment { // Thanks to Carl Friedrich Gauss for the algorythm // Thanks rahulhegde97, bansal_rtk_, code_hunt, sanjoy_62, simranarora5sos // and aashutoshparoha on GeeksForGeeks for the implementation I based this on. A, B, C, P, Q, M, N, D, E: f64 easter_month: int = 0 easter_day: int = 0 A = f64(year % 19) B = f64(year % 4) C = f64(year % 7) P = f64(math.floor(f64(year / 100.0))) Q = math.floor((13 + 8 * P) / 25.0) M = f64(int(15 - Q + P - math.floor(f64(P / 4))) % 30) N = f64(int(4 + P - math.floor(P / 4)) % 7) D = f64(int(19 * A + M) % 30) E = f64(int(2 * B + 4 * C + 6 * D + N) % 7) days: int = int(22 + D + E) easter_day = days if (D == 29) && (E == 6) { // A corner case when D is 29 easter_month = 4 easter_day = 19 } else if (D == 28) && (E == 6) { // Another corner case, when D is 28 easter_month = 4 easter_day = 18 } else { // If days > 31, move to April // April = 4th Month if (days > 31) { easter_month = 04 easter_day = days-31 } else { // Otherwise, stay on March // March = 3rd Month easter_month = 03 } } return {0, 0, easter_day, easter_month, year} }