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time.ex
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time.ex
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defmodule Time do
@moduledoc """
A Time struct and functions.
The Time struct contains the fields hour, minute, second and microseconds.
New times can be built with the `new/4` function or using the
`~T` (see `sigil_T/2`) sigil:
iex> ~T[23:00:07.001]
~T[23:00:07.001]
Both `new/4` and sigil return a struct where the time fields can
be accessed directly:
iex> time = ~T[23:00:07.001]
iex> time.hour
23
iex> time.microsecond
{1000, 3}
The functions on this module work with the `Time` struct as well
as any struct that contains the same fields as the `Time` struct,
such as `NaiveDateTime` and `DateTime`. Such functions expect
`t:Calendar.time/0` in their typespecs (instead of `t:t/0`).
Developers should avoid creating the Time structs directly
and instead rely on the functions provided by this module as well
as the ones in third-party calendar libraries.
## Comparing times
Comparisons in Elixir using `==/2`, `>/2`, `</2` and similar are structural
and based on the `Time` struct fields. For proper comparison between
times, use the `compare/2` function. The existence of the `compare/2`
function in this module also allows using `Enum.min/2` and `Enum.max/2`
functions to get the minimum and maximum time of an `Enum`. For example:
iex> Enum.min([~T[23:00:07.001], ~T[10:00:07.001]], Time)
~T[10:00:07.001]
"""
@enforce_keys [:hour, :minute, :second]
defstruct [:hour, :minute, :second, microsecond: {0, 0}, calendar: Calendar.ISO]
@type t :: %__MODULE__{
hour: Calendar.hour(),
minute: Calendar.minute(),
second: Calendar.second(),
microsecond: Calendar.microsecond(),
calendar: Calendar.calendar()
}
@parts_per_day 86_400_000_000
@seconds_per_day 24 * 60 * 60
@doc """
Returns the current time in UTC.
## Examples
iex> time = Time.utc_now()
iex> time.hour >= 0
true
"""
@doc since: "1.4.0"
@spec utc_now(Calendar.calendar()) :: t
def utc_now(calendar \\ Calendar.ISO) do
{:ok, _, time, microsecond} = Calendar.ISO.from_unix(:os.system_time(), :native)
{hour, minute, second} = time
iso_time = %Time{
hour: hour,
minute: minute,
second: second,
microsecond: microsecond,
calendar: Calendar.ISO
}
convert!(iso_time, calendar)
end
@doc """
Builds a new time.
Expects all values to be integers. Returns `{:ok, time}` if each
entry fits its appropriate range, returns `{:error, reason}` otherwise.
Microseconds can also be given with a precision, which must be an
integer between 0 and 6.
The built-in calendar does not support leap seconds.
## Examples
iex> Time.new(0, 0, 0, 0)
{:ok, ~T[00:00:00.000000]}
iex> Time.new(23, 59, 59, 999_999)
{:ok, ~T[23:59:59.999999]}
iex> Time.new(24, 59, 59, 999_999)
{:error, :invalid_time}
iex> Time.new(23, 60, 59, 999_999)
{:error, :invalid_time}
iex> Time.new(23, 59, 60, 999_999)
{:error, :invalid_time}
iex> Time.new(23, 59, 59, 1_000_000)
{:error, :invalid_time}
# Invalid precision
Time.new(23, 59, 59, {999_999, 10})
{:error, :invalid_time}
"""
@spec new(
Calendar.hour(),
Calendar.minute(),
Calendar.second(),
Calendar.microsecond() | non_neg_integer,
Calendar.calendar()
) :: {:ok, t} | {:error, atom}
def new(hour, minute, second, microsecond \\ {0, 0}, calendar \\ Calendar.ISO)
def new(hour, minute, second, microsecond, calendar) when is_integer(microsecond) do
new(hour, minute, second, {microsecond, 6}, calendar)
end
def new(hour, minute, second, {microsecond, precision}, calendar)
when is_integer(hour) and is_integer(minute) and is_integer(second) and
is_integer(microsecond) and is_integer(precision) do
case calendar.valid_time?(hour, minute, second, {microsecond, precision}) do
true ->
time = %Time{
hour: hour,
minute: minute,
second: second,
microsecond: {microsecond, precision},
calendar: calendar
}
{:ok, time}
false ->
{:error, :invalid_time}
end
end
@doc """
Builds a new time.
Expects all values to be integers. Returns `time` if each
entry fits its appropriate range, raises if the time is invalid.
Microseconds can also be given with a precision, which must be an
integer between 0 and 6.
The built-in calendar does not support leap seconds.
## Examples
iex> Time.new!(0, 0, 0, 0)
~T[00:00:00.000000]
iex> Time.new!(23, 59, 59, 999_999)
~T[23:59:59.999999]
iex> Time.new!(24, 59, 59, 999_999)
** (ArgumentError) cannot build time, reason: :invalid_time
"""
@doc since: "1.11.0"
@spec new!(
Calendar.hour(),
Calendar.minute(),
Calendar.second(),
Calendar.microsecond() | non_neg_integer,
Calendar.calendar()
) :: t
def new!(hour, minute, second, microsecond \\ {0, 0}, calendar \\ Calendar.ISO) do
case new(hour, minute, second, microsecond, calendar) do
{:ok, time} ->
time
{:error, reason} ->
raise ArgumentError, "cannot build time, reason: #{inspect(reason)}"
end
end
@doc """
Converts the given `time` to a string.
### Examples
iex> Time.to_string(~T[23:00:00])
"23:00:00"
iex> Time.to_string(~T[23:00:00.001])
"23:00:00.001"
iex> Time.to_string(~T[23:00:00.123456])
"23:00:00.123456"
iex> Time.to_string(~N[2015-01-01 23:00:00.001])
"23:00:00.001"
iex> Time.to_string(~N[2015-01-01 23:00:00.123456])
"23:00:00.123456"
"""
@spec to_string(Calendar.time()) :: String.t()
def to_string(time)
def to_string(%{
hour: hour,
minute: minute,
second: second,
microsecond: microsecond,
calendar: calendar
}) do
calendar.time_to_string(hour, minute, second, microsecond)
end
@doc """
Parses the extended "Local time" format described by
[ISO 8601:2019](https://en.wikipedia.org/wiki/ISO_8601).
Time zone offset may be included in the string but they will be
simply discarded as such information is not included in times.
As specified in the standard, the separator "T" may be omitted if
desired as there is no ambiguity within this function.
## Examples
iex> Time.from_iso8601("23:50:07")
{:ok, ~T[23:50:07]}
iex> Time.from_iso8601("23:50:07Z")
{:ok, ~T[23:50:07]}
iex> Time.from_iso8601("T23:50:07Z")
{:ok, ~T[23:50:07]}
iex> Time.from_iso8601("23:50:07,0123456")
{:ok, ~T[23:50:07.012345]}
iex> Time.from_iso8601("23:50:07.0123456")
{:ok, ~T[23:50:07.012345]}
iex> Time.from_iso8601("23:50:07.123Z")
{:ok, ~T[23:50:07.123]}
iex> Time.from_iso8601("2015:01:23 23-50-07")
{:error, :invalid_format}
iex> Time.from_iso8601("23:50:07A")
{:error, :invalid_format}
iex> Time.from_iso8601("23:50:07.")
{:error, :invalid_format}
iex> Time.from_iso8601("23:50:61")
{:error, :invalid_time}
"""
@spec from_iso8601(String.t(), Calendar.calendar()) :: {:ok, t} | {:error, atom}
def from_iso8601(string, calendar \\ Calendar.ISO) do
with {:ok, {hour, minute, second, microsecond}} <- Calendar.ISO.parse_time(string) do
convert(
%Time{hour: hour, minute: minute, second: second, microsecond: microsecond},
calendar
)
end
end
@doc """
Parses the extended "Local time" format described by
[ISO 8601:2019](https://en.wikipedia.org/wiki/ISO_8601).
Raises if the format is invalid.
## Examples
iex> Time.from_iso8601!("23:50:07,123Z")
~T[23:50:07.123]
iex> Time.from_iso8601!("23:50:07.123Z")
~T[23:50:07.123]
iex> Time.from_iso8601!("2015:01:23 23-50-07")
** (ArgumentError) cannot parse "2015:01:23 23-50-07" as time, reason: :invalid_format
"""
@spec from_iso8601!(String.t(), Calendar.calendar()) :: t
def from_iso8601!(string, calendar \\ Calendar.ISO) do
case from_iso8601(string, calendar) do
{:ok, value} ->
value
{:error, reason} ->
raise ArgumentError, "cannot parse #{inspect(string)} as time, reason: #{inspect(reason)}"
end
end
@doc """
Converts the given time to
[ISO 8601:2019](https://en.wikipedia.org/wiki/ISO_8601).
By default, `Time.to_iso8601/2` returns times formatted in the "extended"
format, for human readability. It also supports the "basic" format through
passing the `:basic` option.
### Examples
iex> Time.to_iso8601(~T[23:00:13])
"23:00:13"
iex> Time.to_iso8601(~T[23:00:13.001])
"23:00:13.001"
iex> Time.to_iso8601(~T[23:00:13.001], :basic)
"230013.001"
iex> Time.to_iso8601(~N[2010-04-17 23:00:13])
"23:00:13"
"""
@spec to_iso8601(Calendar.time(), :extended | :basic) :: String.t()
def to_iso8601(time, format \\ :extended)
def to_iso8601(%{calendar: Calendar.ISO} = time, format) when format in [:extended, :basic] do
%{
hour: hour,
minute: minute,
second: second,
microsecond: microsecond
} = time
Calendar.ISO.time_to_string(hour, minute, second, microsecond, format)
end
def to_iso8601(%{calendar: _} = time, format) when format in [:extended, :basic] do
time
|> convert!(Calendar.ISO)
|> to_iso8601(format)
end
@doc """
Converts given `time` to an Erlang time tuple.
WARNING: Loss of precision may occur, as Erlang time tuples
only contain hours/minutes/seconds.
## Examples
iex> Time.to_erl(~T[23:30:15.999])
{23, 30, 15}
iex> Time.to_erl(~N[2010-04-17 23:30:15.999])
{23, 30, 15}
"""
@spec to_erl(Calendar.time()) :: :calendar.time()
def to_erl(time) do
%{hour: hour, minute: minute, second: second} = convert!(time, Calendar.ISO)
{hour, minute, second}
end
@doc """
Converts an Erlang time tuple to a `Time` struct.
## Examples
iex> Time.from_erl({23, 30, 15}, {5000, 3})
{:ok, ~T[23:30:15.005]}
iex> Time.from_erl({24, 30, 15})
{:error, :invalid_time}
"""
@spec from_erl(:calendar.time(), Calendar.microsecond(), Calendar.calendar()) ::
{:ok, t} | {:error, atom}
def from_erl(tuple, microsecond \\ {0, 0}, calendar \\ Calendar.ISO)
def from_erl({hour, minute, second}, microsecond, calendar) do
with {:ok, time} <- new(hour, minute, second, microsecond, Calendar.ISO),
do: convert(time, calendar)
end
@doc """
Converts an Erlang time tuple to a `Time` struct.
## Examples
iex> Time.from_erl!({23, 30, 15})
~T[23:30:15]
iex> Time.from_erl!({23, 30, 15}, {5000, 3})
~T[23:30:15.005]
iex> Time.from_erl!({24, 30, 15})
** (ArgumentError) cannot convert {24, 30, 15} to time, reason: :invalid_time
"""
@spec from_erl!(:calendar.time(), Calendar.microsecond(), Calendar.calendar()) :: t
def from_erl!(tuple, microsecond \\ {0, 0}, calendar \\ Calendar.ISO) do
case from_erl(tuple, microsecond, calendar) do
{:ok, value} ->
value
{:error, reason} ->
raise ArgumentError,
"cannot convert #{inspect(tuple)} to time, reason: #{inspect(reason)}"
end
end
@doc """
Converts a number of seconds after midnight to a `Time` struct.
## Examples
iex> Time.from_seconds_after_midnight(10_000)
~T[02:46:40]
iex> Time.from_seconds_after_midnight(30_000, {5000, 3})
~T[08:20:00.005]
iex> Time.from_seconds_after_midnight(-1)
~T[23:59:59]
iex> Time.from_seconds_after_midnight(100_000)
~T[03:46:40]
"""
@doc since: "1.11.0"
@spec from_seconds_after_midnight(
integer(),
Calendar.microsecond(),
Calendar.calendar()
) :: t
def from_seconds_after_midnight(seconds, microsecond \\ {0, 0}, calendar \\ Calendar.ISO)
when is_integer(seconds) do
seconds_in_day = Integer.mod(seconds, @seconds_per_day)
{hour, minute, second, {_, _}} =
calendar.time_from_day_fraction({seconds_in_day, @seconds_per_day})
%Time{
calendar: calendar,
hour: hour,
minute: minute,
second: second,
microsecond: microsecond
}
end
@doc """
Converts a `Time` struct to a number of seconds after midnight.
The returned value is a two-element tuple with the number of seconds and microseconds.
## Examples
iex> Time.to_seconds_after_midnight(~T[23:30:15])
{84615, 0}
iex> Time.to_seconds_after_midnight(~N[2010-04-17 23:30:15.999])
{84615, 999000}
"""
@doc since: "1.11.0"
@spec to_seconds_after_midnight(Calendar.time()) :: {integer(), non_neg_integer()}
def to_seconds_after_midnight(%{microsecond: {microsecond, _precision}} = time) do
iso_days = {0, to_day_fraction(time)}
{Calendar.ISO.iso_days_to_unit(iso_days, :second), microsecond}
end
@doc """
Adds the `amount_to_add` of `unit`s to the given `time`.
Accepts an `amount_to_add` in any `unit`. `unit` can be
`:hour`, `:minute`, `:second` or any subsecond precision from
`t:System.time_unit/0`. It defaults to `:second`. Negative values
will move backwards in time.
This function always consider the unit to be computed according
to the `Calendar.ISO`.
Note the result value represents the time of day, meaning that it is cyclic,
for instance, it will never go over 24 hours for the ISO calendar.
## Examples
iex> Time.add(~T[10:00:00], 27000)
~T[17:30:00]
iex> Time.add(~T[11:00:00.005], 2400)
~T[11:40:00.005]
iex> Time.add(~T[00:00:00.000], 86_399_999, :millisecond)
~T[23:59:59.999]
Negative values are allowed:
iex> Time.add(~T[23:00:00], -60)
~T[22:59:00]
Note that the time is cyclic:
iex> Time.add(~T[17:10:05], 86400)
~T[17:10:05]
Hours and minutes are also supported:
iex> Time.add(~T[17:10:05], 2, :hour)
~T[19:10:05]
iex> Time.add(~T[17:10:05], 30, :minute)
~T[17:40:05]
This operation merges the precision of the time with the given unit:
iex> result = Time.add(~T[00:29:10], 21, :millisecond)
~T[00:29:10.021]
iex> result.microsecond
{21000, 3}
"""
@doc since: "1.6.0"
@spec add(Calendar.time(), integer, :hour | :minute | System.time_unit()) :: t
def add(time, amount_to_add, unit \\ :second)
def add(time, amount_to_add, :hour) when is_integer(amount_to_add) do
add(time, amount_to_add * 3600, :second)
end
def add(time, amount_to_add, :minute) when is_integer(amount_to_add) do
add(time, amount_to_add * 60, :second)
end
def add(%{calendar: calendar, microsecond: {_, precision}} = time, amount_to_add, unit)
when is_integer(amount_to_add) do
amount_to_add = System.convert_time_unit(amount_to_add, unit, :microsecond)
total = time_to_microseconds(time) + amount_to_add
parts = Integer.mod(total, @parts_per_day)
precision = max(Calendar.ISO.time_unit_to_precision(unit), precision)
{hour, minute, second, {microsecond, _}} =
calendar.time_from_day_fraction({parts, @parts_per_day})
%Time{
hour: hour,
minute: minute,
second: second,
microsecond: {microsecond, precision},
calendar: calendar
}
end
defp time_to_microseconds(%{
calendar: Calendar.ISO,
hour: 0,
minute: 0,
second: 0,
microsecond: {0, _}
}) do
0
end
defp time_to_microseconds(time) do
iso_days = {0, to_day_fraction(time)}
Calendar.ISO.iso_days_to_unit(iso_days, :microsecond)
end
@doc """
Compares two time structs.
Returns `:gt` if first time is later than the second
and `:lt` for vice versa. If the two times are equal
`:eq` is returned.
## Examples
iex> Time.compare(~T[16:04:16], ~T[16:04:28])
:lt
iex> Time.compare(~T[16:04:16], ~T[16:04:16])
:eq
iex> Time.compare(~T[16:04:16.01], ~T[16:04:16.001])
:gt
This function can also be used to compare across more
complex calendar types by considering only the time fields:
iex> Time.compare(~N[1900-01-01 16:04:16], ~N[2015-01-01 16:04:16])
:eq
iex> Time.compare(~N[2015-01-01 16:04:16], ~N[2015-01-01 16:04:28])
:lt
iex> Time.compare(~N[2015-01-01 16:04:16.01], ~N[2000-01-01 16:04:16.001])
:gt
"""
@doc since: "1.4.0"
@spec compare(Calendar.time(), Calendar.time()) :: :lt | :eq | :gt
def compare(%{calendar: calendar} = time1, %{calendar: calendar} = time2) do
%{hour: hour1, minute: minute1, second: second1, microsecond: {microsecond1, _}} = time1
%{hour: hour2, minute: minute2, second: second2, microsecond: {microsecond2, _}} = time2
case {{hour1, minute1, second1, microsecond1}, {hour2, minute2, second2, microsecond2}} do
{first, second} when first > second -> :gt
{first, second} when first < second -> :lt
_ -> :eq
end
end
def compare(time1, time2) do
{parts1, ppd1} = to_day_fraction(time1)
{parts2, ppd2} = to_day_fraction(time2)
case {parts1 * ppd2, parts2 * ppd1} do
{first, second} when first > second -> :gt
{first, second} when first < second -> :lt
_ -> :eq
end
end
@doc """
Returns true if the first time is strictly earlier than the second.
## Examples
iex> Time.before?(~T[16:04:16], ~T[16:04:28])
true
iex> Time.before?(~T[16:04:16], ~T[16:04:16])
false
iex> Time.before?(~T[16:04:16.01], ~T[16:04:16.001])
false
"""
@doc since: "1.15.0"
@spec before?(Calendar.time(), Calendar.time()) :: boolean()
def before?(time1, time2) do
compare(time1, time2) == :lt
end
@doc """
Returns true if the first time is strictly later than the second.
## Examples
iex> Time.after?(~T[16:04:28], ~T[16:04:16])
true
iex> Time.after?(~T[16:04:16], ~T[16:04:16])
false
iex> Time.after?(~T[16:04:16.001], ~T[16:04:16.01])
false
"""
@doc since: "1.15.0"
@spec after?(Calendar.time(), Calendar.time()) :: boolean()
def after?(time1, time2) do
compare(time1, time2) == :gt
end
@doc """
Converts given `time` to a different calendar.
Returns `{:ok, time}` if the conversion was successful,
or `{:error, reason}` if it was not, for some reason.
## Examples
Imagine someone implements `Calendar.Holocene`, a calendar based on the
Gregorian calendar that adds exactly 10,000 years to the current Gregorian
year:
iex> Time.convert(~T[13:30:15], Calendar.Holocene)
{:ok, %Time{calendar: Calendar.Holocene, hour: 13, minute: 30, second: 15, microsecond: {0, 0}}}
"""
@doc since: "1.5.0"
@spec convert(Calendar.time(), Calendar.calendar()) :: {:ok, t} | {:error, atom}
# Keep it multiline for proper function clause errors.
def convert(
%{
calendar: calendar,
hour: hour,
minute: minute,
second: second,
microsecond: microsecond
},
calendar
) do
time = %Time{
calendar: calendar,
hour: hour,
minute: minute,
second: second,
microsecond: microsecond
}
{:ok, time}
end
def convert(%{microsecond: {_, precision}} = time, calendar) do
{hour, minute, second, {microsecond, _}} =
time
|> to_day_fraction()
|> calendar.time_from_day_fraction()
time = %Time{
calendar: calendar,
hour: hour,
minute: minute,
second: second,
microsecond: {microsecond, precision}
}
{:ok, time}
end
@doc """
Similar to `Time.convert/2`, but raises an `ArgumentError`
if the conversion between the two calendars is not possible.
## Examples
Imagine someone implements `Calendar.Holocene`, a calendar based on the
Gregorian calendar that adds exactly 10,000 years to the current Gregorian
year:
iex> Time.convert!(~T[13:30:15], Calendar.Holocene)
%Time{calendar: Calendar.Holocene, hour: 13, minute: 30, second: 15, microsecond: {0, 0}}
"""
@doc since: "1.5.0"
@spec convert!(Calendar.time(), Calendar.calendar()) :: t
def convert!(time, calendar) do
case convert(time, calendar) do
{:ok, value} ->
value
{:error, reason} ->
raise ArgumentError,
"cannot convert #{inspect(time)} to target calendar #{inspect(calendar)}, " <>
"reason: #{inspect(reason)}"
end
end
@doc """
Returns the difference between two times, considering only the hour, minute,
second and microsecond.
As with the `compare/2` function both `Time` structs and other structures
containing time can be used. If for instance a `NaiveDateTime` or `DateTime`
is passed, only the hour, minute, second, and microsecond is considered. Any
additional information about a date or time zone is ignored when calculating
the difference.
The answer can be returned in any `:hour`, `:minute`, `:second` or any
subsecond `unit` available from `t:System.time_unit/0`. If the first time
value is earlier than the second, a negative number is returned.
The unit is measured according to `Calendar.ISO` and defaults to `:second`.
Fractional results are not supported and are truncated.
## Examples
iex> Time.diff(~T[00:29:12], ~T[00:29:10])
2
# When passing a `NaiveDateTime` the date part is ignored.
iex> Time.diff(~N[2017-01-01 00:29:12], ~T[00:29:10])
2
# Two `NaiveDateTime` structs could have big differences in the date
# but only the time part is considered.
iex> Time.diff(~N[2017-01-01 00:29:12], ~N[1900-02-03 00:29:10])
2
iex> Time.diff(~T[00:29:12], ~T[00:29:10], :microsecond)
2_000_000
iex> Time.diff(~T[00:29:10], ~T[00:29:12], :microsecond)
-2_000_000
iex> Time.diff(~T[02:29:10], ~T[00:29:10], :hour)
2
iex> Time.diff(~T[02:29:10], ~T[00:29:11], :hour)
1
"""
@doc since: "1.5.0"
@spec diff(Calendar.time(), Calendar.time(), :hour | :minute | System.time_unit()) :: integer
def diff(time1, time2, unit \\ :second)
def diff(time1, time2, :hour) do
diff(time1, time2, :second) |> div(3600)
end
def diff(time1, time2, :minute) do
diff(time1, time2, :second) |> div(60)
end
def diff(
%{
calendar: Calendar.ISO,
hour: hour1,
minute: minute1,
second: second1,
microsecond: {microsecond1, _}
},
%{
calendar: Calendar.ISO,
hour: hour2,
minute: minute2,
second: second2,
microsecond: {microsecond2, _}
},
unit
) do
total =
(hour1 - hour2) * 3_600_000_000 + (minute1 - minute2) * 60_000_000 +
(second1 - second2) * 1_000_000 + (microsecond1 - microsecond2)
System.convert_time_unit(total, :microsecond, unit)
end
def diff(time1, time2, unit) do
fraction1 = to_day_fraction(time1)
fraction2 = to_day_fraction(time2)
Calendar.ISO.iso_days_to_unit({0, fraction1}, unit) -
Calendar.ISO.iso_days_to_unit({0, fraction2}, unit)
end
@doc """
Returns the given time with the microsecond field truncated to the given
precision (`:microsecond`, `millisecond` or `:second`).
The given time is returned unchanged if it already has lower precision than
the given precision.
## Examples
iex> Time.truncate(~T[01:01:01.123456], :microsecond)
~T[01:01:01.123456]
iex> Time.truncate(~T[01:01:01.123456], :millisecond)
~T[01:01:01.123]
iex> Time.truncate(~T[01:01:01.123456], :second)
~T[01:01:01]
"""
@doc since: "1.6.0"
@spec truncate(t(), :microsecond | :millisecond | :second) :: t()
def truncate(%Time{microsecond: microsecond} = time, precision) do
%{time | microsecond: Calendar.truncate(microsecond, precision)}
end
## Helpers
defp to_day_fraction(%{
hour: hour,
minute: minute,
second: second,
microsecond: {_, _} = microsecond,
calendar: calendar
}) do
calendar.time_to_day_fraction(hour, minute, second, microsecond)
end
defimpl String.Chars do
def to_string(time) do
%{
hour: hour,
minute: minute,
second: second,
microsecond: microsecond,
calendar: calendar
} = time
calendar.time_to_string(hour, minute, second, microsecond)
end
end
defimpl Inspect do
def inspect(time, _) do
%{
hour: hour,
minute: minute,
second: second,
microsecond: microsecond,
calendar: calendar
} = time
"~T[" <>
calendar.time_to_string(hour, minute, second, microsecond) <> suffix(calendar) <> "]"
end
defp suffix(Calendar.ISO), do: ""
defp suffix(calendar), do: " " <> inspect(calendar)
end
end