(*
 * DGL(The Delphi Generic Library)
 *
 * Copyright (c) 2004
 * HouSisong@gmail.com
 *
 * This material is provided "as is", with absolutely no warranty expressed
 * or implied. Any use is at your own risk.
 *
 * Permission to use or copy this software for any purpose is hereby granted
 * without fee, provided the above notices are retained on all copies.
 * Permission to modify the code and to distribute modified code is granted,
 * provided the above notices are retained, and a notice that the code was
 * modified is included with the above copyright notice.
 *
 *)

//------------------------------------------------------------------------------
// _TStack的声明
// Create by HouSisong, 2004.09.08
//------------------------------------------------------------------------------

{$ifndef  __Stack_inc_h_}
{$define  __Stack_inc_h_}


{$I DGLIntf.inc_h}
{$I Deque.inc_h}

  _TDefaultStackBaseContainer = _TDeque; //默认使用_TDeque

  //_TStack
  //----------------------------------------------------------------------------
  // 作用描述: 实现_IStack接口 ，内部使用_TDeque来实现
  // 主要方法：参见_IStack接口的说明
  //----------------------------------------------------------------------------
  _TStack = class(TInterfacedObject,_IStack)
  private
    FBaseContainer : _TDefaultStackBaseContainer;
  public
    //实现_IStack接口
    procedure Push(const Value: _ValueType);  {$ifdef _DGL_Inline} inline; {$endif}
    procedure Pop();                          {$ifdef _DGL_Inline} inline; {$endif}
    function  GetTopValue():_ValueType;                                    {$ifdef _DGL_Inline} inline; {$endif}
    procedure SetTopValue(const aValue:_ValueType);                        {$ifdef _DGL_Inline} inline; {$endif}
    property  Top: _ValueType read GetTopValue write SetTopValue;
    procedure Clear();                         {$ifdef _DGL_Inline} inline; {$endif}
    function  Size(): _TNativeInt;                 {$ifdef _DGL_Inline} inline; {$endif}
    function  IsEmpty(): Boolean;               {$ifdef _DGL_Inline} inline; {$endif}
    function  IsEquals(const AContainer: _IStack): Boolean;   {$ifdef _DGL_Inline} inline; {$endif}
    function  Clone():_IStack;                  {$ifdef _DGL_Inline} inline; {$endif}
    procedure Assign(const num:_TNativeInt;const Value: _ValueType);overload;     {$ifdef _DGL_Inline} inline; {$endif}
    procedure Assign(const ItBegin,ItEnd:_IIterator);overload;    //todo: Warning inline on if _ValueType if "object" then error!!!
    function  GetSelfObj():TObject;   {$ifdef _DGL_Inline} inline; {$endif}
  public
    constructor Create(); overload;
    constructor Create(const num:_TNativeInt);overload;
    constructor Create(const num:_TNativeInt;const Value:_ValueType);overload;
    constructor Create(const ItBegin,ItEnd:_IIterator);overload;
    constructor Create(const AStack:_TStack);overload;       
    destructor  Destroy(); override;
  end;

{$endif } //  __Stack_inc_h_