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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.Instant;
interface
uses
Boolean,
DateTime.Calendar.Gregorian.Date,
DateTime.Calendar.Gregorian.Time,
Mathematics.Sign,
Object_.Base,
Text,
Value;
type
TGregorianInstant = class(TValue)
protected
FDate: TGregorianDate;
FTime: TGregorianTime;
function EqualsInstant(Instant: TGregorianInstant): TBoolean;
public
constructor Create(Date: TGregorianDate; Time: TGregorianTime); reintroduce; virtual;
destructor Destroy(); override;
function Equals(Object_: TBaseObject): TBoolean; override;
function ToText(): TText; override;
function CompareTo(Instant: TGregorianInstant): TSign;
function TruncateToSeconds(): TGregorianInstant;
property Date: TGregorianDate read FDate;
property Time: TGregorianTime read FTime;
public
class function Minimum(const Left: TGregorianInstant; const Right: TGregorianInstant): TGregorianInstant; static;
class function Maximum(const Left: TGregorianInstant; const Right: TGregorianInstant): TGregorianInstant; static;
end;
implementation
uses
DateTime.Calendar.Gregorian.Instant.Format.Text;
{ TGregorianInstant }
function TGregorianInstant.CompareTo(Instant: TGregorianInstant): TSign;
begin
Result := Date.CompareTo(Instant.Date);
if Result = sZero then
Result := Time.CompareTo(Instant.Time);
end;
constructor TGregorianInstant.Create(Date: TGregorianDate; Time: TGregorianTime);
begin
inherited Create();
FDate := Date;
FTime := Time;
Date.AddReference();
Time.AddReference();
end;
destructor TGregorianInstant.Destroy();
begin
Date.ReleaseReference();
Time.ReleaseReference();
inherited Destroy();
end;
function TGregorianInstant.Equals(Object_: TBaseObject): TBoolean;
begin
Result := (Object_ is TGregorianInstant) and EqualsInstant(Object_ as TGregorianInstant);
end;
function TGregorianInstant.EqualsInstant(Instant: TGregorianInstant): TBoolean;
begin
Result := Date.Equals(Instant.Date) and Time.Equals(Instant.Time);
end;
class function TGregorianInstant.Maximum(const Left: TGregorianInstant; const Right: TGregorianInstant): TGregorianInstant;
begin
if Left.CompareTo(Right) = sPositive then
Result := Left
else
Result := Right;
end;
class function TGregorianInstant.Minimum(const Left: TGregorianInstant; const Right: TGregorianInstant): TGregorianInstant;
begin
if Left.CompareTo(Right) = sNegative then
Result := Left
else
Result := Right;
end;
function TGregorianInstant.ToText(): TText;
begin
Result := TGregorianInstantTextFormat.Default.ToText(Self);
end;
function TGregorianInstant.TruncateToSeconds(): TGregorianInstant;
begin
Result := TGregorianInstant.Create(Date, Time.TruncateToSeconds());
Discard();
end;
end.
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