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| ///////////////////////////////////////////////////////////////////////////
// //
// Copyright (c) 2015 by Charta Software B.V. //
// All rights reserved //
// //
// Version: 1.7.0.83525 //
// Web site: https://pascal.chartasoftware.com/ //
// //
// This code and information are provided "as is" without warranty of //
// any kind. Dissemination of this information or reproduction of //
// this material is strictly forbidden unless prior written permission //
// is obtained from Charta Software B.V.. //
// //
///////////////////////////////////////////////////////////////////////////
unit DateTime.Calendar.Gregorian.Date;
interface
uses
Boolean,
DateTime.Calendar.Gregorian.Month,
Integer._32,
Mathematics.Sign,
Object_.Base,
Text,
Value;
type
TYear = TInteger32;
TMonthOfYear = (
moyJanuary = 1,
moyFebruary = 2,
moyMarch = 3,
moyApril = 4,
moyMay = 5,
moyJune = 6,
moyJuly = 7,
moyAugust = 8,
moySeptember = 9,
moyOctober = 10,
moyNovember = 11,
moyDecember = 12
);
TDayOfMonth = 1..31;
TGregorianDate = class(TValue)
protected
FYear: TYear;
FMonth: TGregorianMonth;
FDay: TDayOfMonth;
function EqualsDate(Date: TGregorianDate): TBoolean;
public
constructor Create(Year: TYear; Month: TGregorianMonth; Day: TDayOfMonth); reintroduce; overload; virtual;
constructor Create(Year: TYear; Month: TGregorianMonthIndex; Day: TDayOfMonth); reintroduce; overload; virtual;
function Copy(): TGregorianDate;
function Equals(Object_: TBaseObject): TBoolean; override;
function CompareTo(Date: TGregorianDate): TSign;
function ToText(): TText; override;
property Year: TYear read FYear;
property Month: TGregorianMonth read FMonth;
property Day: TDayOfMonth read FDay;
end;
implementation
uses
DateTime.Calendar.Gregorian,
DateTime.Calendar.Gregorian.Date.Format.Text,
Integer,
Integer._32.Positive;
{ TGregorianDate }
constructor TGregorianDate.Create(Year: TYear; Month: TGregorianMonth; Day: TDayOfMonth);
begin
inherited Create();
FYear := Year;
FMonth := Month;
FDay := Day;
end;
function TGregorianDate.CompareTo(Date: TGregorianDate): TSign;
begin
Result := TInteger.Compare(Year, Date.Year);
if Result = sZero then
begin
Result := TInteger.Compare(TPositiveInteger32(Month.Index), TPositiveInteger32(Date.Month.Index));
if Result = sZero then
Result := TInteger.Compare(TPositiveInteger32(Day), TPositiveInteger32(Date.Day));
end;
end;
function TGregorianDate.Copy(): TGregorianDate;
begin
Result := TGregorianDate.Create(Year, Month, Day);
end;
constructor TGregorianDate.Create(Year: TYear; Month: TGregorianMonthIndex; Day: TDayOfMonth);
begin
Create(Year, TGregorianCalendar.Months[Month - 1], Day);
end;
function TGregorianDate.Equals(Object_: TBaseObject): TBoolean;
begin
Result := (Object_ is TGregorianDate) and EqualsDate(Object_ as TGregorianDate);
end;
function TGregorianDate.EqualsDate(Date: TGregorianDate): TBoolean;
begin
Result := (Date.Year = Year) and (Date.Month = Month) and (Date.Day = Day);
end;
function TGregorianDate.ToText(): TText;
begin
Result := TGregorianDateTextFormat.Default.Format(Self);
end;
end.
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