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253 lines
11 KiB
Go
253 lines
11 KiB
Go
package discord
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import (
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"strconv"
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"strings"
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"time"
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)
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// Epoch is the Discord epoch constant in time.Duration (nanoseconds)
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// since Unix epoch.
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const Epoch = 1420070400000 * time.Millisecond
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// DurationSinceEpoch returns the duration from the Discord epoch to current.
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func DurationSinceEpoch(t time.Time) time.Duration {
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return time.Duration(t.UnixNano()) - Epoch
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}
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type Snowflake uint64
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// NullSnowflake gets encoded into a null. This is used for
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// optional and nullable snowflake fields.
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const NullSnowflake = ^Snowflake(0)
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func NewSnowflake(t time.Time) Snowflake {
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return Snowflake((DurationSinceEpoch(t) / time.Millisecond) << 22)
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}
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func ParseSnowflake(sf string) (Snowflake, error) {
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if sf == "null" {
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return NullSnowflake, nil
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}
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u, err := strconv.ParseUint(sf, 10, 64)
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if err != nil {
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return 0, err
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}
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return Snowflake(u), nil
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}
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func (s *Snowflake) UnmarshalJSON(v []byte) error {
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p, err := ParseSnowflake(strings.Trim(string(v), `"`))
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if err != nil {
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return err
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}
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*s = p
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return nil
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}
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func (s Snowflake) MarshalJSON() ([]byte, error) {
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// This includes 0 and null, because MarshalJSON does not dictate when a
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// value gets omitted.
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if !s.IsValid() {
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return []byte("null"), nil
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} else {
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return []byte(`"` + strconv.FormatInt(int64(s), 10) + `"`), nil
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}
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}
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// String returns the ID, or nothing if the snowflake isn't valid.
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func (s Snowflake) String() string {
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// Check if negative.
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if !s.IsValid() {
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return ""
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}
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return strconv.FormatUint(uint64(s), 10)
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}
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// IsValid returns whether or not the snowflake is valid.
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func (s Snowflake) IsValid() bool {
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return !(int64(s) == 0 || s == NullSnowflake)
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}
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// IsNull returns whether or not the snowflake is null.
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func (s Snowflake) IsNull() bool {
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return s == NullSnowflake
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}
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func (s Snowflake) Time() time.Time {
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unixnano := time.Duration(s>>22)*time.Millisecond + Epoch
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return time.Unix(0, int64(unixnano))
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}
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func (s Snowflake) Worker() uint8 {
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return uint8(s & 0x3E0000 >> 17)
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}
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func (s Snowflake) PID() uint8 {
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return uint8(s & 0x1F000 >> 12)
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}
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func (s Snowflake) Increment() uint16 {
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return uint16(s & 0xFFF)
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}
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type AppID Snowflake
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const NullAppID = AppID(NullSnowflake)
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func (s AppID) MarshalJSON() ([]byte, error) { return Snowflake(s).MarshalJSON() }
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func (s *AppID) UnmarshalJSON(v []byte) error { return (*Snowflake)(s).UnmarshalJSON(v) }
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func (s AppID) String() string { return Snowflake(s).String() }
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func (s AppID) IsValid() bool { return Snowflake(s).IsValid() }
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func (s AppID) IsNull() bool { return Snowflake(s).IsNull() }
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func (s AppID) Time() time.Time { return Snowflake(s).Time() }
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func (s AppID) Worker() uint8 { return Snowflake(s).Worker() }
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func (s AppID) PID() uint8 { return Snowflake(s).PID() }
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func (s AppID) Increment() uint16 { return Snowflake(s).Increment() }
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type AttachmentID Snowflake
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const NullAttachmentID = AttachmentID(NullSnowflake)
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func (s AttachmentID) MarshalJSON() ([]byte, error) { return Snowflake(s).MarshalJSON() }
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func (s *AttachmentID) UnmarshalJSON(v []byte) error { return (*Snowflake)(s).UnmarshalJSON(v) }
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func (s AttachmentID) String() string { return Snowflake(s).String() }
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func (s AttachmentID) IsValid() bool { return Snowflake(s).IsValid() }
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func (s AttachmentID) IsNull() bool { return Snowflake(s).IsNull() }
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func (s AttachmentID) Time() time.Time { return Snowflake(s).Time() }
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func (s AttachmentID) Worker() uint8 { return Snowflake(s).Worker() }
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func (s AttachmentID) PID() uint8 { return Snowflake(s).PID() }
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func (s AttachmentID) Increment() uint16 { return Snowflake(s).Increment() }
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type AuditLogEntryID Snowflake
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const NullAuditLogEntryID = AuditLogEntryID(NullSnowflake)
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func (s AuditLogEntryID) MarshalJSON() ([]byte, error) { return Snowflake(s).MarshalJSON() }
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func (s *AuditLogEntryID) UnmarshalJSON(v []byte) error { return (*Snowflake)(s).UnmarshalJSON(v) }
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func (s AuditLogEntryID) String() string { return Snowflake(s).String() }
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func (s AuditLogEntryID) IsValid() bool { return Snowflake(s).IsValid() }
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func (s AuditLogEntryID) IsNull() bool { return Snowflake(s).IsNull() }
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func (s AuditLogEntryID) Time() time.Time { return Snowflake(s).Time() }
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func (s AuditLogEntryID) Worker() uint8 { return Snowflake(s).Worker() }
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func (s AuditLogEntryID) PID() uint8 { return Snowflake(s).PID() }
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func (s AuditLogEntryID) Increment() uint16 { return Snowflake(s).Increment() }
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type ChannelID Snowflake
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const NullChannelID = ChannelID(NullSnowflake)
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func (s ChannelID) MarshalJSON() ([]byte, error) { return Snowflake(s).MarshalJSON() }
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func (s *ChannelID) UnmarshalJSON(v []byte) error { return (*Snowflake)(s).UnmarshalJSON(v) }
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func (s ChannelID) String() string { return Snowflake(s).String() }
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func (s ChannelID) IsValid() bool { return Snowflake(s).IsValid() }
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func (s ChannelID) IsNull() bool { return Snowflake(s).IsNull() }
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func (s ChannelID) Time() time.Time { return Snowflake(s).Time() }
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func (s ChannelID) Worker() uint8 { return Snowflake(s).Worker() }
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func (s ChannelID) PID() uint8 { return Snowflake(s).PID() }
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func (s ChannelID) Increment() uint16 { return Snowflake(s).Increment() }
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func (s ChannelID) Mention() string { return "<#" + s.String() + ">" }
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type EmojiID Snowflake
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const NullEmojiID = EmojiID(NullSnowflake)
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func (s EmojiID) MarshalJSON() ([]byte, error) { return Snowflake(s).MarshalJSON() }
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func (s *EmojiID) UnmarshalJSON(v []byte) error { return (*Snowflake)(s).UnmarshalJSON(v) }
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func (s EmojiID) String() string { return Snowflake(s).String() }
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func (s EmojiID) IsValid() bool { return Snowflake(s).IsValid() }
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func (s EmojiID) IsNull() bool { return Snowflake(s).IsNull() }
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func (s EmojiID) Time() time.Time { return Snowflake(s).Time() }
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func (s EmojiID) Worker() uint8 { return Snowflake(s).Worker() }
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func (s EmojiID) PID() uint8 { return Snowflake(s).PID() }
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func (s EmojiID) Increment() uint16 { return Snowflake(s).Increment() }
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type IntegrationID Snowflake
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const NullIntegrationID = IntegrationID(NullSnowflake)
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func (s IntegrationID) MarshalJSON() ([]byte, error) { return Snowflake(s).MarshalJSON() }
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func (s *IntegrationID) UnmarshalJSON(v []byte) error { return (*Snowflake)(s).UnmarshalJSON(v) }
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func (s IntegrationID) String() string { return Snowflake(s).String() }
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func (s IntegrationID) IsValid() bool { return Snowflake(s).IsValid() }
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func (s IntegrationID) IsNull() bool { return Snowflake(s).IsNull() }
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func (s IntegrationID) Time() time.Time { return Snowflake(s).Time() }
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func (s IntegrationID) Worker() uint8 { return Snowflake(s).Worker() }
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func (s IntegrationID) PID() uint8 { return Snowflake(s).PID() }
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func (s IntegrationID) Increment() uint16 { return Snowflake(s).Increment() }
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type GuildID Snowflake
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const NullGuildID = GuildID(NullSnowflake)
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func (s GuildID) MarshalJSON() ([]byte, error) { return Snowflake(s).MarshalJSON() }
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func (s *GuildID) UnmarshalJSON(v []byte) error { return (*Snowflake)(s).UnmarshalJSON(v) }
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func (s GuildID) String() string { return Snowflake(s).String() }
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func (s GuildID) IsValid() bool { return Snowflake(s).IsValid() }
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func (s GuildID) IsNull() bool { return Snowflake(s).IsNull() }
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func (s GuildID) Time() time.Time { return Snowflake(s).Time() }
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func (s GuildID) Worker() uint8 { return Snowflake(s).Worker() }
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func (s GuildID) PID() uint8 { return Snowflake(s).PID() }
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func (s GuildID) Increment() uint16 { return Snowflake(s).Increment() }
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type MessageID Snowflake
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const NullMessageID = MessageID(NullSnowflake)
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func (s MessageID) MarshalJSON() ([]byte, error) { return Snowflake(s).MarshalJSON() }
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func (s *MessageID) UnmarshalJSON(v []byte) error { return (*Snowflake)(s).UnmarshalJSON(v) }
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func (s MessageID) String() string { return Snowflake(s).String() }
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func (s MessageID) IsValid() bool { return Snowflake(s).IsValid() }
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func (s MessageID) IsNull() bool { return Snowflake(s).IsNull() }
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func (s MessageID) Time() time.Time { return Snowflake(s).Time() }
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func (s MessageID) Worker() uint8 { return Snowflake(s).Worker() }
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func (s MessageID) PID() uint8 { return Snowflake(s).PID() }
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func (s MessageID) Increment() uint16 { return Snowflake(s).Increment() }
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type RoleID Snowflake
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const NullRoleID = RoleID(NullSnowflake)
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func (s RoleID) MarshalJSON() ([]byte, error) { return Snowflake(s).MarshalJSON() }
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func (s *RoleID) UnmarshalJSON(v []byte) error { return (*Snowflake)(s).UnmarshalJSON(v) }
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func (s RoleID) String() string { return Snowflake(s).String() }
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func (s RoleID) IsValid() bool { return Snowflake(s).IsValid() }
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func (s RoleID) IsNull() bool { return Snowflake(s).IsNull() }
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func (s RoleID) Time() time.Time { return Snowflake(s).Time() }
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func (s RoleID) Worker() uint8 { return Snowflake(s).Worker() }
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func (s RoleID) PID() uint8 { return Snowflake(s).PID() }
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func (s RoleID) Increment() uint16 { return Snowflake(s).Increment() }
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func (s RoleID) Mention() string { return "<@&" + s.String() + ">" }
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type UserID Snowflake
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const NullUserID = UserID(NullSnowflake)
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func (s UserID) MarshalJSON() ([]byte, error) { return Snowflake(s).MarshalJSON() }
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func (s *UserID) UnmarshalJSON(v []byte) error { return (*Snowflake)(s).UnmarshalJSON(v) }
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func (s UserID) String() string { return Snowflake(s).String() }
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func (s UserID) IsValid() bool { return Snowflake(s).IsValid() }
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func (s UserID) IsNull() bool { return Snowflake(s).IsNull() }
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func (s UserID) Time() time.Time { return Snowflake(s).Time() }
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func (s UserID) Worker() uint8 { return Snowflake(s).Worker() }
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func (s UserID) PID() uint8 { return Snowflake(s).PID() }
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func (s UserID) Increment() uint16 { return Snowflake(s).Increment() }
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func (s UserID) Mention() string { return "<@" + s.String() + ">" }
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type WebhookID Snowflake
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const NullWebhookID = WebhookID(NullSnowflake)
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func (s WebhookID) MarshalJSON() ([]byte, error) { return Snowflake(s).MarshalJSON() }
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func (s *WebhookID) UnmarshalJSON(v []byte) error { return (*Snowflake)(s).UnmarshalJSON(v) }
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func (s WebhookID) String() string { return Snowflake(s).String() }
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func (s WebhookID) IsValid() bool { return Snowflake(s).IsValid() }
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func (s WebhookID) IsNull() bool { return Snowflake(s).IsNull() }
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func (s WebhookID) Time() time.Time { return Snowflake(s).Time() }
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func (s WebhookID) Worker() uint8 { return Snowflake(s).Worker() }
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func (s WebhookID) PID() uint8 { return Snowflake(s).PID() }
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func (s WebhookID) Increment() uint16 { return Snowflake(s).Increment() }
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