(*
 * DGL(The Delphi Generic Library)
 *
 * Copyright (c) 2004
 * HouSisong@263.net
 *
 * 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的實現
// Create by HouSisong, 2004.09.08
//------------------------------------------------------------------------------


{$ifndef  __Stack_inc_pas_}
{$define  __Stack_inc_pas_}


{$I DGLIntf.inc_pas}
{$I Deque.inc_pas}

{ _TStack }

procedure _TStack.Assign(const ItBegin, ItEnd: _IIterator);
begin
  self.FBaseContainer.Assign(ItBegin, ItEnd);
end;

procedure _TStack.Assign(const num: integer; const Value: _ValueType);
begin
  self.FBaseContainer.Assign(num,Value);
end;

procedure _TStack.Clear;
begin
  FBaseContainer.Clear();
end;

function _TStack.Clone: _IStack;
begin
  result:=_TStack.Create(self);
end;

constructor _TStack.Create;
begin
  inherited Create();
  FBaseContainer :=_TDefaultStackBaseContainer.Create();
end;

constructor _TStack.Create(const num: integer; const Value: _ValueType);
begin
  inherited Create();
  FBaseContainer :=_TDefaultStackBaseContainer.Create(num,Value);
end;

constructor _TStack.Create(const num: integer);
begin
  inherited Create();
  FBaseContainer :=_TDefaultStackBaseContainer.Create(num);
end;

constructor _TStack.Create(const AStack: _TStack);
begin
  inherited Create();
  FBaseContainer :=_TDefaultStackBaseContainer.Create(AStack.FBaseContainer as _TDefaultStackBaseContainer);
end;

constructor _TStack.Create(const ItBegin, ItEnd: _IIterator);
begin
  inherited Create();
  FBaseContainer :=_TDefaultStackBaseContainer.Create(ItBegin, ItEnd);
end;

destructor _TStack.Destroy;
begin
  FBaseContainer.Free();
  inherited;
end;

function _TStack.GetSelfObj: TObject;
begin
  result:=self;
end;

function _TStack.IsEmpty: Boolean;
begin
  result:=FBaseContainer.IsEmpty;
end;

function _TStack.IsEquals(const AContainer: _IStack): Boolean;
begin
  result:=FBaseContainer.IsEquals((AContainer.GetSelfObj as _TStack).FBaseContainer as _TDefaultStackBaseContainer);
end;

procedure _TStack.Pop;
begin
  FBaseContainer.PopBack();
end;

procedure _TStack.Push(const Value: _ValueType);
begin
  FBaseContainer.PushBack(Value);
end;

function _TStack.Size: Integer;
begin
  result:=FBaseContainer.Size;
end;

function _TStack.GetTopValue: _ValueType;
begin
  result:=FBaseContainer.GetBackValue();
end;

procedure _TStack.SetTopValue(const aValue:_ValueType);
begin
  FBaseContainer.SetBackValue(aValue);
end;


{$endif } //  __Stack_inc_pas_