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class Time is subclass of CalendarDefinition
/*
Responsibility
時間を表す。
Abstract
私は時間あるいはアナリシス・パターンで言うところの時点であり、aDateの時間を表す。
例えば2003年7月28日14時15分59秒を表す。
*/
values
public hoursPerDay = 24; --１日の時間数
public minutesPerHour = 60; --１時間の分数
public secondsPerMinute = 60; --１分の秒数
public ミリ = 1000; --ミリを通常の単位にするための倍数
public milliSecondsPerDay = hoursPerDay * minutesPerHour * secondsPerMinute * ミリ; --１日=２４時間をmilliSecondで表した数
public milliSecondsPerHour = minutesPerHour * secondsPerMinute * ミリ; --１時間をmilliSecondで表した数
private io = new IO();
types
public TimeInMilliSeconds = nat; --１日の時刻を０時を0としたmilliSecond単位で持つ。
instance variables
/* 本来は、Javaのようにdate・時間を合わせてmilliSecond単位で持つべきだろうが、
Dateは倍精度浮動小数点数でModifiedJulianDateを持っているため、時間の精度は５分程度となる。
このため、dateと時刻を分けて持つことにした。
*/
sDate : Date;
sTime : TimeInMilliSeconds;
operations
--Constructor
public Time : Calendar * int * int * int * nat * nat * nat * nat ==> Time
Time(cal, year, month, 日, 時, aMinute, aSecond, milliSecond) ==
(
sDate := cal.getDateFrom_yyyy_mm_dd(year, month, 日);
sTime := self.IntProduct2TimeMillieSeconds(時, aMinute, aSecond, milliSecond);
return self
);
public Time : Calendar * int * int * int ==> Time
Time(cal, year, month, 日) ==
(
sDate := cal.getDateFrom_yyyy_mm_dd(year, month, 日);
sTime := self.IntProduct2TimeMillieSeconds(0, 0, 0, 0);
return self
);
public Time : Date ==> Time
Time(aDate) ==
(
sDate := aDate;
sTime := self.IntProduct2TimeMillieSeconds(0, 0, 0, 0);
return self
);
--currentDateTimeを求める単体テスト用関数。
public Time: Calendar ==> Time
Time(cal) ==
(
let currentDateTime = readCurrentDateTime(homedir ^ "/temp/Today.txt", homedir ^ "/temp/Now.txt", cal)
in
(
sDate := currentDateTime.getDate();
sTime := currentDateTime.getTime();
);
return self
);
--currentDateTimeを指定したreadFromFile単体テスト用関数。
public Time: seq of char * seq of char * Calendar ==> Time
Time(dateFileName, 時間fname, cal) ==
(
let currentDateTime = readCurrentDateTime(dateFileName, 時間fname, cal)
in
(
sDate := currentDateTime.getDate();
sTime := currentDateTime.getTime();
);
return self
);
--currentDateTimeをreadFromFile
public readCurrentDateTime : seq of char * seq of char * Calendar ==> [Time]
readCurrentDateTime(dateFileName, 時間fname, cal) ==
let mk_(結果, mk_(h, m, s, ms)) = io.freadval[int * int * int * int](時間fname)
in
if 結果 then
let d = cal.readFromFiletoday(dateFileName) in
return new Time(cal, d.Year(), d.Month(), d.day(), h, m, s, ms)
else
let - = io.echo("Can't read Current Date-Time data file.")
in
return nil;
--インスタンス変数操作
public getDate : () ==> Date
getDate() == return sDate;
public setDate : Date ==> ()
setDate(aDate) == sDate := aDate;
public getTime : () ==> TimeInMilliSeconds
getTime() == return sTime;
public setTime : TimeInMilliSeconds ==> ()
setTime(aTime) == sTime :=aTime;
public hour: () ==> nat
hour() ==
let mk_(hour, -, -, -) = self.Time2IntProduct(self.getTime())
in
return hour;
public setTimeFromNat : nat ==> ()
setTimeFromNat(aTime) ==
let mk_(-, aMinute, aSecond, milliSecond) = self.Time2IntProduct(self.getTime())
in
self.setTime(IntProduct2TimeMillieSeconds(aTime, aMinute, aSecond, milliSecond));
public minute: () ==> nat
minute() ==
let mk_(-, aMinute, -, -) = self.Time2IntProduct(self.getTime())
in
return aMinute;
public setMinuteFromNat : nat ==> ()
setMinuteFromNat(minute) ==
let mk_(hour, -, aSecond, milliSecond) = self.Time2IntProduct(self.getTime())
in
self.setTime(IntProduct2TimeMillieSeconds(hour, minute, aSecond, milliSecond));
public second: () ==> nat
second() ==
let mk_(-, -, aSecond, -) = self.Time2IntProduct(self.getTime())
in
return aSecond;
public setSecond : nat ==> ()
setSecond(aSecond) ==
let mk_(hour, aMinute, -, milliSecond) = self.Time2IntProduct(self.getTime())
in
self.setTime(IntProduct2TimeMillieSeconds(hour, aMinute, aSecond, milliSecond));
public milliSecond: () ==> nat
milliSecond() ==
let mk_(-, -, -, milliSecond) = self.Time2IntProduct(self.getTime())
in
return milliSecond;
public setMilliSecond : nat ==> ()
setMilliSecond(aMilliSecond) ==
let mk_(hour, aMinute, aSecond, -) = self.Time2IntProduct(self.getTime())
in
self.setTime(IntProduct2TimeMillieSeconds(hour, aMinute, aSecond, aMilliSecond));
functions
-- Get attribute.
--時間から、その時間の属する暦を求める。
public calendar : () -> Calendar
calendar() == getDate().calendar();
--時間から、その時間の属する年を求める。
public Year: () -> int
Year() == self.getDate().calendar().Year(self.getDate());
--時間から、その時間の属する月を求める。
public Month: () -> int
Month() == self.getDate().calendar().Month(self.getDate());
--時間から、日を求める。
public day: () -> int
day() == self.getDate().calendar().day(self.getDate());
public getTimeAsNat : () -> nat
getTimeAsNat() == self.getTime();
----Compare
public LT: Time -> bool
LT(aTime) ==
let date1 = floor self.getDate().getModifiedJulianDate(),
date2 = floor aTime.getDate().getModifiedJulianDate()
in
cases true :
(date1 < date2) -> true,
(date1 = date2) ->
if self.getTimeAsNat() < aTime.getTimeAsNat() then
true
else
false,
others -> false
end;
public GT: Time -> bool
GT(aTime) == not (self.LT(aTime) or self.EQ(aTime));
public LE: Time -> bool
LE(aTime) == not self.GT(aTime);
public GE: Time -> bool
GE(aTime) == not self.LT(aTime);
--自身と与えられた時間がEQか判定する。
public EQ: Time -> bool
EQ(aTime) ==
self.getDate().EQ(aTime.getDate()) and self.getTimeAsNat() = aTime.getTimeAsNat();
--自身と与えられた時間が等しくないか判定する。
public NE: Time -> bool
NE(aTime) == not self.EQ(aTime);
--変換
public IntProduct2TimeMillieSeconds : int * int * int * int -> int
IntProduct2TimeMillieSeconds(hour, aMinute, aSecond, milliSecond) ==((hour * minutesPerHour + aMinute) * secondsPerMinute + aSecond) * ミリ + milliSecond;
public Time2IntProduct : TimeInMilliSeconds -> nat * nat * nat * nat
Time2IntProduct(aTime) ==
let hms = aTime div ミリ,
milliSecond = aTime mod ミリ,
hm = hms div secondsPerMinute,
aSecond = hms mod secondsPerMinute,
hour = hm div minutesPerHour,
aMinute = hm mod minutesPerHour
in
mk_(hour, aMinute, aSecond, milliSecond);
operations
public asString : () ==> seq of char
asString() ==
let mk_(hour, aMinute, aSecond, milliSecond) = self.Time2IntProduct(self.getTime())
in
return
self.getDate().asString() ^
Integer`asString(hour) ^
Integer`asString(aMinute) ^
Integer`asString(aSecond) ^
Integer`asStringZ("009")(milliSecond);
public print : () ==> seq of char
print() ==
let mk_(hour, aMinute, aSecond, milliSecond) = self.Time2IntProduct(self.getTime())
in
return
self.getDate().print() ^
Integer`asString(hour) ^ "Hour, " ^
Integer`asString(aMinute) ^ "Minute, " ^
Integer`asString(aSecond) ^ "Second, " ^
Integer`asStringZ("009")(milliSecond) ^ "MilliSecond" ;
----calculation
--milliSecondを加算する
public plusmilliSecond : int ==> Time
plusmilliSecond(aMilliSecond) ==
let time = self.getTime() + aMilliSecond,
CarriedNumOfDays =
if time >= 0 then
time div milliSecondsPerDay
else
time div milliSecondsPerDay - 1,
newTime = time mod milliSecondsPerDay
in
(
dcl aTime : Time := new Time(self.calendar(), self.Year(), self.Month(), self.day()) ;
aTime.setTime(newTime);
aTime.setDate(aTime.getDate().plus(CarriedNumOfDays));
return aTime
);
public plussecond : int ==> Time
plussecond(aSecond) == self.plusmilliSecond(aSecond * ミリ);
public plusminute : int ==> Time
plusminute(minute) == self.plusmilliSecond(minute * secondsPerMinute * ミリ);
public plushour : int ==> Time
plushour(hour) == self.plusmilliSecond(hour * minutesPerHour * secondsPerMinute * ミリ);
public plus: int * int * int * int ==> Time
plus(hour, aMinute, aSecond, milliSecond) == self.plusmilliSecond(IntProduct2TimeMillieSeconds(hour, aMinute, aSecond, milliSecond));
--milliSecondを減算する
public minusmilliSecond : int ==> Time
minusmilliSecond(aMilliSecond) == return self.plusmilliSecond(-aMilliSecond);
public minus: int * int * int * int ==> Time
minus(hour, aMinute, aSecond, milliSecond) == self.minusmilliSecond(IntProduct2TimeMillieSeconds(hour, aMinute, aSecond, milliSecond));
end Time
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