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Diffstat (limited to 'src/lib/collections/CollWrappers.pas')
| -rw-r--r-- | src/lib/collections/CollWrappers.pas | 876 |
1 files changed, 876 insertions, 0 deletions
diff --git a/src/lib/collections/CollWrappers.pas b/src/lib/collections/CollWrappers.pas new file mode 100644 index 00000000..513103a2 --- /dev/null +++ b/src/lib/collections/CollWrappers.pas @@ -0,0 +1,876 @@ +unit CollWrappers; + +(***************************************************************************** + * Copyright 2003 by Matthew Greet + * This library is free software; you can redistribute it and/or modify it + * under the terms of the GNU Lesser General Public License as published by the + * Free Software Foundation; either version 2.1 of the License, or (at your + * option) any later version. + * + * This library is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more + * details. (http://opensource.org/licenses/lgpl-license.php) + * + * See http://www.warmachine.u-net.com/delphi_collections for updates and downloads. + * + * $Version: v1.0.3 $ + * $Revision: 1.1.1.1 $ + * $Log: D:\QVCS Repositories\Delphi Collections\CollWrappers.qbt $ + * + * Various primitive type wrappers, adapters and abstract base classes for + * natural items. + * + * Revision 1.1.1.1 by: Matthew Greet Rev date: 24/10/03 16:48:16 + * v1.0 branch. + * + * Revision 1.1 by: Matthew Greet Rev date: 06/04/03 10:51:04 + * Primitive type wrapper interfaces added. + * Abstract, template classes added. + * All classes implement reference counting by descending from + * TInterfacedObject. + * + * + * Revision 1.0 by: Matthew Greet Rev date: 01/03/03 10:50:02 + * Initial revision. + * + * FPC compatibility fixes by: UltraStar Deluxe Team + * + * $Endlog$ + *****************************************************************************) + +{$IFDEF FPC} + {$MODE Delphi}{$H+} +{$ENDIF} + +interface + +uses + SysUtils, + Collections; + +type + IAssociationWrapper = interface + ['{54DF42E0-64F2-11D7-8120-0002E3165EF8}'] + function GetAutoDestroy: Boolean; + procedure SetAutoDestroy(Value: Boolean); + function GetKey: ICollectable; + function GetValue: TObject; + property AutoDestroy: Boolean read GetAutoDestroy write SetAutoDestroy; + property Key: ICollectable read GetKey; + property Value: TObject read GetValue; + end; + + IBoolean = interface + ['{62D1D160-64F2-11D7-8120-0002E3165EF8}'] + function GetValue: Boolean; + property Value: Boolean read GetValue; + end; + + ICardinal = interface + ['{6AF7B1C0-64F2-11D7-8120-0002E3165EF8}'] + function GetValue: Cardinal; + property Value: Cardinal read GetValue; + end; + + IChar = interface + ['{73AD00E0-64F2-11D7-8120-0002E3165EF8}'] + function GetValue: Char; + property Value: Char read GetValue; + end; + + IClass = interface + ['{7A84B660-64F2-11D7-8120-0002E3165EF8}'] + function GetValue: TClass; + property Value: TClass read GetValue; + end; + + IDouble = interface + ['{815C6BE0-64F2-11D7-8120-0002E3165EF8}'] + function GetValue: Double; + property Value: Double read GetValue; + end; + + IInteger = interface + ['{88ECC300-64F2-11D7-8120-0002E3165EF8}'] + function GetValue: Integer; + property Value: Integer read GetValue; + end; + + IIntegerAssociationWrapper = interface + ['{8F582220-64F2-11D7-8120-0002E3165EF8}'] + function GetAutoDestroy: Boolean; + procedure SetAutoDestroy(Value: Boolean); + function GetKey: Integer; + function GetValue: TObject; + property AutoDestroy: Boolean read GetAutoDestroy write SetAutoDestroy; + property Key: Integer read GetKey; + property Value: TObject read GetValue; + end; + + IInterfaceWrapper = interface + ['{962E5100-64F2-11D7-8120-0002E3165EF8}'] + function GetValue: IUnknown; + property Value: IUnknown read GetValue; + end; + + IObject = interface + ['{9C675580-64F2-11D7-8120-0002E3165EF8}'] + function GetAutoDestroy: Boolean; + procedure SetAutoDestroy(Value: Boolean); + function GetValue: TObject; + property Value: TObject read GetValue; + end; + + IString = interface + ['{A420DF80-64F2-11D7-8120-0002E3165EF8}'] + function GetValue: String; + property Value: String read GetValue; + end; + + IStringAssociationWrapper = interface + ['{AB98CCA0-64F2-11D7-8120-0002E3165EF8}'] + function GetAutoDestroy: Boolean; + procedure SetAutoDestroy(Value: Boolean); + function GetKey: String; + function GetValue: TObject; + property AutoDestroy: Boolean read GetAutoDestroy write SetAutoDestroy; + property Key: String read GetKey; + property Value: TObject read GetValue; + end; + + TAbstractItem = class(TInterfacedObject, ICollectable) + public + function GetInstance: TObject; virtual; + end; + + TAbstractIntegerMappable = class(TAbstractItem, IEquatable, IIntegerMappable) + private + FKey: Integer; + protected + function MakeKey: Integer; virtual; abstract; + public + procedure AfterConstruction; override; + function Equals(const Item: ICollectable): Boolean; virtual; + function GetKey: Integer; virtual; + end; + + TAbstractMappable = class(TAbstractItem, IEquatable, IMappable) + private + FKey: ICollectable; + protected + function MakeKey: ICollectable; virtual; abstract; + public + destructor Destroy; override; + procedure AfterConstruction; override; + function Equals(const Item: ICollectable): Boolean; virtual; + function GetKey: ICollectable; virtual; + end; + + TAbstractStringMappable = class(TAbstractItem, IEquatable, IStringMappable) + private + FKey: String; + protected + function MakeKey: String; virtual; abstract; + public + procedure AfterConstruction; override; + function Equals(const Item: ICollectable): Boolean; virtual; + function GetKey: String; virtual; + end; + + TAssociationWrapper = class(TAbstractItem, IEquatable, IMappable, IAssociationWrapper) + private + FAutoDestroy: Boolean; + FKey: ICollectable; + FValue: TObject; + public + constructor Create(const Key: ICollectable; Value: TObject); overload; + constructor Create(Key: Integer; Value: TObject); overload; + constructor Create(Key: String; Value: TObject); overload; + constructor Create(Key, Value: TObject; AutoDestroyKey: Boolean = true); overload; + destructor Destroy; override; + function GetAutoDestroy: Boolean; + procedure SetAutoDestroy(Value: Boolean); + function GetKey: ICollectable; + function GetValue: TObject; + function Equals(const Item: ICollectable): Boolean; + property AutoDestroy: Boolean read GetAutoDestroy write SetAutoDestroy; + property Key: ICollectable read GetKey; + property Value: TObject read GetValue; + end; + + TBooleanWrapper = class(TAbstractItem, IEquatable, IHashable, IComparable, IBoolean) + private + FValue: Boolean; + public + constructor Create(Value: Boolean); + function GetValue: Boolean; + function CompareTo(const Item: ICollectable): Integer; + function Equals(const Item: ICollectable): Boolean; + function HashCode: Integer; + property Value: Boolean read GetValue; + end; + + TCardinalWrapper = class(TAbstractItem, IEquatable, IHashable, IComparable, ICardinal) + private + FValue: Cardinal; + public + constructor Create(Value: Cardinal); + function GetValue: Cardinal; + function Equals(const Item: ICollectable): Boolean; + function HashCode: Integer; + function CompareTo(const Item: ICollectable): Integer; + property Value: Cardinal read GetValue; + end; + + TCharWrapper = class(TAbstractItem, IEquatable, IHashable, IComparable, IChar) + private + FValue: Char; + public + constructor Create(Value: Char); + function GetValue: Char; + function Equals(const Item: ICollectable): Boolean; + function HashCode: Integer; + function CompareTo(const Item: ICollectable): Integer; + property Value: Char read GetValue; + end; + + TClassWrapper = class(TAbstractItem, IEquatable, IHashable, IClass) + private + FValue: TClass; + public + constructor Create(Value: TClass); + function GetValue: TClass; + function Equals(const Item: ICollectable): Boolean; + function HashCode: Integer; + property Value: TClass read GetValue; + end; + + TDoubleWrapper = class(TAbstractItem, IEquatable, IHashable, IComparable, IDouble) + private + FValue: Double; + public + constructor Create(Value: Double); + function GetValue: Double; + function Equals(const Item: ICollectable): Boolean; + function HashCode: Integer; + function CompareTo(const Item: ICollectable): Integer; + property Value: Double read GetValue; + end; + + TIntegerWrapper = class(TAbstractItem, IEquatable, IHashable, IComparable, IInteger) + private + FValue: Integer; + public + constructor Create(Value: Integer); + function GetValue: Integer; + function Equals(const Item: ICollectable): Boolean; + function HashCode: Integer; + function CompareTo(const Item: ICollectable): Integer; + property Value: Integer read GetValue; + end; + + TIntegerAssociationWrapper = class(TAbstractItem, IEquatable, IIntegerMappable, IIntegerAssociationWrapper) + private + FAutoDestroy: Boolean; + FKey: Integer; + FValue: TObject; + public + constructor Create(const Key: Integer; Value: TObject); overload; + destructor Destroy; override; + function Equals(const Item: ICollectable): Boolean; + function GetAutoDestroy: Boolean; + procedure SetAutoDestroy(Value: Boolean); + function GetKey: Integer; + function GetValue: TObject; + property AutoDestroy: Boolean read GetAutoDestroy write SetAutoDestroy; + property Key: Integer read GetKey; + property Value: TObject read GetValue; + end; + + TInterfaceWrapper = class(TAbstractItem, IHashable, IEquatable, IInterfaceWrapper) + private + FValue: IUnknown; + public + constructor Create(const Value: IUnknown); + destructor Destroy; override; + function GetValue: IUnknown; + function Equals(const Item: ICollectable): Boolean; + function HashCode: Integer; + property Value: IUnknown read GetValue; + end; + + TObjectWrapper = class(TAbstractItem, IEquatable, IComparable, IHashable, IObject) + private + FAutoDestroy: Boolean; + FValue: TObject; + public + constructor Create(Value: TObject); overload; + destructor Destroy; override; + function GetAutoDestroy: Boolean; + procedure SetAutoDestroy(Value: Boolean); + function GetValue: TObject; + function CompareTo(const Item: ICollectable): Integer; + function Equals(const Item: ICollectable): Boolean; + function HashCode: Integer; + property AutoDestroy: Boolean read FAutoDestroy write FAutoDestroy; + property Value: TObject read GetValue; + end; + + TStringWrapper = class(TAbstractItem, IEquatable, IHashable, IComparable, IString) + private + FValue: String; + public + constructor Create(Value: String); + function GetValue: String; + function Equals(const Item: ICollectable): Boolean; + function HashCode: Integer; + function CompareTo(const Item: ICollectable): Integer; + property Value: String read FValue; + end; + + TStringAssociationWrapper = class(TAbstractItem, IEquatable, IStringMappable, IStringAssociationWrapper) + private + FAutoDestroy: Boolean; + FKey: String; + FValue: TObject; + public + constructor Create(const Key: String; Value: TObject); overload; + destructor Destroy; override; + function GetAutoDestroy: Boolean; + procedure SetAutoDestroy(Value: Boolean); + function GetKey: String; + function GetValue: TObject; + function Equals(const Item: ICollectable): Boolean; + property AutoDestroy: Boolean read GetAutoDestroy write SetAutoDestroy; + property Key: String read GetKey; + property Value: TObject read GetValue; + end; + +implementation + +{ TAbstractItem } +function TAbstractItem.GetInstance: TObject; +begin + Result := Self; +end; + + +{ TAbstractIntegerMappable } +procedure TAbstractIntegerMappable.AfterConstruction; +begin + inherited AfterConstruction; + FKey := MakeKey; +end; + +function TAbstractIntegerMappable.Equals(const Item: ICollectable): Boolean; +begin + Result := (Self = Item.GetInstance); +end; + +function TAbstractIntegerMappable.GetKey: Integer; +begin + Result := FKey; +end; + +{ TAbstractMappable } +destructor TAbstractMappable.Destroy; +begin + FKey := nil; + inherited Destroy; +end; + +procedure TAbstractMappable.AfterConstruction; +begin + inherited AfterConstruction; + FKey := MakeKey; +end; + +function TAbstractMappable.Equals(const Item: ICollectable): Boolean; +begin + Result := (Self = Item.GetInstance); +end; + +function TAbstractMappable.GetKey: ICollectable; +begin + Result := FKey; +end; + +{ TAbstractStringMappable } +procedure TAbstractStringMappable.AfterConstruction; +begin + inherited AfterConstruction; + FKey := MakeKey; +end; + +function TAbstractStringMappable.Equals(const Item: ICollectable): Boolean; +begin + Result := (Self = Item.GetInstance); +end; + +function TAbstractStringMappable.GetKey: String; +begin + Result := FKey; +end; + +{ TAssociationWrapper } +constructor TAssociationWrapper.Create(const Key: ICollectable; Value: TObject); +begin + inherited Create; + FAutoDestroy := true; + FKey := Key; + FValue := Value; +end; + +constructor TAssociationWrapper.Create(Key: Integer; Value: TObject); +begin + Create(TIntegerWrapper.Create(Key) as ICollectable, Value); +end; + +constructor TAssociationWrapper.Create(Key: String; Value: TObject); +begin + Create(TStringWrapper.Create(Key) as ICollectable, Value); +end; + +constructor TAssociationWrapper.Create(Key, Value: TObject; AutoDestroyKey: Boolean); +var + KeyWrapper: TObjectWrapper; +begin + KeyWrapper := TObjectWrapper.Create(Key); + KeyWrapper.AutoDestroy := AutoDestroyKey; + Create(KeyWrapper as ICollectable, Value); +end; + +destructor TAssociationWrapper.Destroy; +begin + if FAutoDestroy then + FValue.Free; + FKey := nil; + inherited Destroy; +end; + +function TAssociationWrapper.GetAutoDestroy: Boolean; +begin + Result := FAutoDestroy; +end; + +procedure TAssociationWrapper.SetAutoDestroy(Value: Boolean); +begin + FAutoDestroy := Value; +end; + +function TAssociationWrapper.GetKey: ICollectable; +begin + Result := FKey; +end; + +function TAssociationWrapper.GetValue: TObject; +begin + Result := FValue; +end; + +function TAssociationWrapper.Equals(const Item: ICollectable): Boolean; +begin + Result := (Self.Value = (Item.GetInstance as TAssociationWrapper).Value) +end; + +{ TCardinalWrapper } +constructor TCardinalWrapper.Create(Value: Cardinal); +begin + inherited Create; + FValue := Value; +end; + +function TCardinalWrapper.GetValue: Cardinal; +begin + Result := FValue; +end; + +function TCardinalWrapper.Equals(const Item: ICollectable): Boolean; +begin + Result := (Self.Value = (Item.GetInstance as TCardinalWrapper).Value) +end; + +function TCardinalWrapper.HashCode: Integer; +begin + Result := FValue; +end; + +function TCardinalWrapper.CompareTo(const Item: ICollectable): Integer; +var + Value2: Cardinal; +begin + Value2 := (Item.GetInstance as TCardinalWrapper).Value; + if Value < Value2 then + Result := -1 + else if Value > Value2 then + Result := 1 + else + Result := 0; +end; + +{ TBooleanWrapper } +constructor TBooleanWrapper.Create(Value: Boolean); +begin + inherited Create; + FValue := Value; +end; + +function TBooleanWrapper.GetValue: Boolean; +begin + Result := FValue; +end; + +function TBooleanWrapper.Equals(const Item: ICollectable): Boolean; +begin + Result := (Self.Value = (Item.GetInstance as TBooleanWrapper).Value) +end; + +function TBooleanWrapper.HashCode: Integer; +begin + Result := Ord(FValue); +end; + +function TBooleanWrapper.CompareTo(const Item: ICollectable): Integer; +var + Value2: Boolean; +begin + Value2 := (Item.GetInstance as TBooleanWrapper).Value; + if not Value and Value2 then + Result := -1 + else if Value and not Value2 then + Result := 1 + else + Result := 0; +end; + +{ TCharWrapper } +constructor TCharWrapper.Create(Value: Char); +begin + inherited Create; + FValue := Value; +end; + +function TCharWrapper.GetValue: Char; +begin + Result := FValue; +end; + +function TCharWrapper.Equals(const Item: ICollectable): Boolean; +begin + Result := (Self.Value = (Item.GetInstance as TCharWrapper).Value) +end; + +function TCharWrapper.HashCode: Integer; +begin + Result := Integer(FValue); +end; + +function TCharWrapper.CompareTo(const Item: ICollectable): Integer; +var + Value2: Char; +begin + Value2 := (Item.GetInstance as TCharWrapper).Value; + if Value < Value2 then + Result := -1 + else if Value > Value2 then + Result := 1 + else + Result := 0; +end; + +{ TClassWrapper } +constructor TClassWrapper.Create(Value: TClass); +begin + inherited Create; + FValue := Value; +end; + +function TClassWrapper.GetValue: TClass; +begin + Result := FValue; +end; + +function TClassWrapper.Equals(const Item: ICollectable): Boolean; +begin + Result := (Self.Value = (Item.GetInstance as TClassWrapper).Value) +end; + +function TClassWrapper.HashCode: Integer; +begin + Result := Integer(FValue.ClassInfo); +end; + +{ TDoubleWrapper } +constructor TDoubleWrapper.Create(Value: Double); +begin + inherited Create; + FValue := Value; +end; + +function TDoubleWrapper.GetValue: Double; +begin + Result := FValue; +end; + +function TDoubleWrapper.Equals(const Item: ICollectable): Boolean; +begin + Result := (Self.Value = (Item.GetInstance as TDoubleWrapper).Value) +end; + +function TDoubleWrapper.HashCode: Integer; +var + DblAsInt: array[0..1] of Integer; +begin + Double(DblAsInt) := Value; + Result := DblAsInt[0] xor DblAsInt[1]; +end; + +function TDoubleWrapper.CompareTo(const Item: ICollectable): Integer; +var + Value2: Double; +begin + Value2 := (Item.GetInstance as TDoubleWrapper).Value; + if Value < Value2 then + Result := -1 + else if Value > Value2 then + Result := 1 + else + Result := 0; +end; + +{ TIntegerWrapper } +constructor TIntegerWrapper.Create(Value: Integer); +begin + inherited Create; + FValue := Value; +end; + +function TIntegerWrapper.GetValue: Integer; +begin + Result := FValue; +end; + +function TIntegerWrapper.Equals(const Item: ICollectable): Boolean; +begin + Result := (Self.Value = (Item.GetInstance as TIntegerWrapper).Value) +end; + +function TIntegerWrapper.HashCode: Integer; +begin + Result := FValue; +end; + +function TIntegerWrapper.CompareTo(const Item: ICollectable): Integer; +var + Value2: Integer; +begin + Value2 := (Item.GetInstance as TIntegerWrapper).Value; + if Value < Value2 then + Result := -1 + else if Value > Value2 then + Result := 1 + else + Result := 0; +end; + +{ TIntegerAssociationWrapper } +constructor TIntegerAssociationWrapper.Create(const Key: Integer; Value: TObject); +begin + inherited Create; + FAutoDestroy := true; + FKey := Key; + FValue := Value; +end; + +destructor TIntegerAssociationWrapper.Destroy; +begin + if FAutoDestroy then + FValue.Free; + inherited Destroy; +end; + +function TIntegerAssociationWrapper.GetAutoDestroy: Boolean; +begin + Result := FAutoDestroy; +end; + +procedure TIntegerAssociationWrapper.SetAutoDestroy(Value: Boolean); +begin + FAutoDestroy := Value; +end; + +function TIntegerAssociationWrapper.GetValue: TObject; +begin + Result := FValue; +end; + +function TIntegerAssociationWrapper.Equals(const Item: ICollectable): Boolean; +begin + Result := (Self.Value = (Item.GetInstance as TIntegerAssociationWrapper).Value) +end; + +function TIntegerAssociationWrapper.GetKey: Integer; +begin + Result := FKey; +end; + +{ TStringAssociationWrapper } +constructor TStringAssociationWrapper.Create(const Key: String; Value: TObject); +begin + inherited Create; + FAutoDestroy := true; + FKey := Key; + FValue := Value; +end; + +destructor TStringAssociationWrapper.Destroy; +begin + if FAutoDestroy then + FValue.Free; + inherited Destroy; +end; + +function TStringAssociationWrapper.GetAutoDestroy: Boolean; +begin + Result := FAutoDestroy; +end; + +procedure TStringAssociationWrapper.SetAutoDestroy(Value: Boolean); +begin + FAutoDestroy := Value; +end; + +function TStringAssociationWrapper.GetValue: TObject; +begin + Result := FValue; +end; + +function TStringAssociationWrapper.Equals(const Item: ICollectable): Boolean; +begin + Result := (Self.Value = (Item.GetInstance as TStringAssociationWrapper).Value) +end; + +function TStringAssociationWrapper.GetKey: String; +begin + Result := FKey; +end; + +{ TInterfaceWrapper } +constructor TInterfaceWrapper.Create(const Value: IUnknown); +begin + inherited Create; + FValue := Value; +end; + +destructor TInterfaceWrapper.Destroy; +begin + FValue := nil; + inherited Destroy; +end; + +function TInterfaceWrapper.GetValue: IUnknown; +begin + Result := FValue; +end; + +function TInterfaceWrapper.Equals(const Item: ICollectable): Boolean; +begin + Result := (Self.Value = (Item.GetInstance as TInterfaceWrapper).Value) +end; + +function TInterfaceWrapper.HashCode: Integer; +begin + Result := Integer(Pointer(FValue)); +end; + +{ TObjectWrapper } +constructor TObjectWrapper.Create(Value: TObject); +begin + inherited Create; + FAutoDestroy := true; + FValue := Value; +end; + +destructor TObjectWrapper.Destroy; +begin + if FAutoDestroy then + FValue.Free; + inherited Destroy; +end; + +function TObjectWrapper.GetAutoDestroy: Boolean; +begin + Result := FAutoDestroy; +end; + +procedure TObjectWrapper.SetAutoDestroy(Value: Boolean); +begin + FAutoDestroy := Value; +end; + +function TObjectWrapper.GetValue: TObject; +begin + Result := FValue; +end; + +function TObjectWrapper.CompareTo(const Item: ICollectable): Integer; +var + Value1, Value2: Integer; +begin + Value1 := Integer(Pointer(Self)); + if Item <> nil then + Value2 := Integer(Pointer(Item)) + else + Value2 := Low(Integer); + if (Value1 < Value2) then + Result := -1 + else if (Value1 > Value2) then + Result := 1 + else + Result := 0; +end; + +function TObjectWrapper.Equals(const Item: ICollectable): Boolean; +begin + Result := (Self.Value = (Item.GetInstance as TObjectWrapper).Value) +end; + +function TObjectWrapper.HashCode: Integer; +begin + Result := Integer(Pointer(FValue)); +end; + +{ TStringWrapper } +constructor TStringWrapper.Create(Value: String); +begin + inherited Create; + FValue := Value; +end; + +function TStringWrapper.GetValue: String; +begin + Result := FValue; +end; + +function TStringWrapper.Equals(const Item: ICollectable): Boolean; +begin + Result := (Self.Value = (Item.GetInstance as TStringWrapper).Value) +end; + +function TStringWrapper.HashCode: Integer; +var + I: Integer; +begin + Result := 0; + for I := 1 to Length(FValue) do + Result := (Result shl 1) xor Ord(FValue[I]); +end; + +function TStringWrapper.CompareTo(const Item: ICollectable): Integer; +begin + Result := CompareStr(Self.Value, (Item.GetInstance as TStringWrapper).Value) +end; + + +end. |