alazyreader/AdventOfCode2021
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remove unnecessary int64 casting

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This commit is contained in:
David 2021-12-20 18:45:10 -05:00
parent 6ffa3b6dd4
commit 41c58fa100
1 changed files with 12 additions and 12 deletions
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24
16/main.go
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@ -46,30 +46,30 @@ func makeScanner(test bool) *bufio.Scanner {
return bufio.NewScanner(reader) return bufio.NewScanner(reader)
} }
func parseNumber(stream []uint8, length int) int64 { func parseNumber(stream []uint8, length int) int {
result := int64(0) result := int(0)
for i := 0; i < length; i++ { for i := 0; i < length; i++ {
result += int64(stream[i]) << (length - 1 - i) result += int(stream[i]) << (length - 1 - i)
} }
return result return result
} }
type packet struct { type packet struct {
version int64 version int
typeID int64 typeID int
subPackets []packet subPackets []packet
encodedNumber int64 encodedNumber int
} }
func getPacketVersion(stream []uint8) int64 { func getPacketVersion(stream []uint8) int {
return parseNumber(stream, 3) return parseNumber(stream, 3)
} }
func getPacketType(stream []uint8) int64 { func getPacketType(stream []uint8) int {
return parseNumber(stream, 3) return parseNumber(stream, 3)
} }
func getSubpacketLength(t uint8, stream []uint8) (int, int64) { func getSubpacketLength(t uint8, stream []uint8) (int, int) {
if t == 0 { if t == 0 {
return 15, parseNumber(stream, 15) return 15, parseNumber(stream, 15)
} }
@ -79,7 +79,7 @@ func getSubpacketLength(t uint8, stream []uint8) (int, int64) {
return 0, 0 return 0, 0
} }
func parsePayload(stream []uint8) (int64, int) { func parsePayload(stream []uint8) (int, int) {
num := []uint8{} num := []uint8{}
pos := 0 pos := 0
chars := 0 chars := 0
@ -113,10 +113,10 @@ func parsePackets(stream []uint8) (int, packet) {
consumed, subs := parsePackets(stream[7+size+parsed:]) consumed, subs := parsePackets(stream[7+size+parsed:])
parsedPacket.subPackets = append(parsedPacket.subPackets, subs) parsedPacket.subPackets = append(parsedPacket.subPackets, subs)
parsed += consumed parsed += consumed
if size == 11 && int64(len(parsedPacket.subPackets)) == subpacketlength { if size == 11 && len(parsedPacket.subPackets) == subpacketlength {
return parsed + 7 + size, parsedPacket return parsed + 7 + size, parsedPacket
} else if size == 15 && int64(parsed) > subpacketlength || consumed == 0 { } else if size == 15 && parsed > subpacketlength || consumed == 0 {
return parsed + 7 + size, parsedPacket return parsed + 7 + size, parsedPacket
} }
} }