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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 Value;
interface
uses
Comparator,
Mathematics.Sign,
Object_.ReferenceCounted;
type
TValue = class(TReferenceCountedObject)
public
type
TCompare = class(TComparator<TValue>)
public
function Compare(const Left: TValue; const Right: TValue): TSign; override;
public
class var
Instance: TCompare;
end;
class constructor Create();
class destructor Destroy();
end;
implementation
uses
Text.Collation.ParseNumeric;
{ TValue }
class constructor TValue.Create();
begin
TCompare.Instance := TCompare.Create();
TCompare.Instance.AddReference();
end;
class destructor TValue.Destroy();
begin
TCompare.Instance.ReleaseReference();
end;
{ TValue.TCompare }
function TValue.TCompare.Compare(const Left: TValue; const Right: TValue): TSign;
begin
// TODO: We should provide a better implementation which is not based on text conversions
Result := TTextCollationParseNumeric.Instance.Compare(Left.ToText(), Right.ToText());
end;
end.
|