liboce-foundation-dev 0.17.2-2 / usr / include / oce / TCollection_Sequence.gxx

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// Created on: 1992-09-24
// Created by: Mireille MERCIEN
// Copyright (c) 1992-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

// ----------------------------------------------------------------------
// Updated:     Remi Lequette,J.P. TIRAULT February,23 1995
//              we added a basic class BaseSequence where all
//              instantiations of Sequence inherit.
// ----------------------------------------------------------------------

static void delnode(TCollection_SeqNode* p)
{
  TCollection_SequenceNode* q = (TCollection_SequenceNode*) p;
  delete q;
}

// ----------------------------------
// Clear : Clear the Current Sequence
// ----------------------------------
void TCollection_Sequence::Clear()
{
  TCollection_BaseSequence::Clear((void*)&delnode);
}

//=======================================================================
//function : Assign
//purpose  : 
//=======================================================================

const TCollection_Sequence& TCollection_Sequence::Assign
  (const TCollection_Sequence& Other)
{
  if (this == &Other) return *this;
  Clear();
  TCollection_SequenceNode* current  = (TCollection_SequenceNode*) Other.FirstItem;
  TCollection_SequenceNode* previous = NULL;
  TCollection_SequenceNode* newnode = NULL;
  FirstItem = NULL;
  while (current) {
    newnode = new TCollection_SequenceNode(current->Value(),previous,(TCollection_SeqNode*)0L);
    if (previous) previous->Next() = newnode;
    else          FirstItem      = newnode;
    current = (TCollection_SequenceNode *) current->Next();
    previous = newnode;
  }
  LastItem = newnode;
  Size = Other.Size;
  CurrentItem = FirstItem;
  CurrentIndex = 1;
  return *this;
}


// -------------------------------------------------
// Append : Push an item  at the end of the sequence
// -------------------------------------------------
void TCollection_Sequence::Append(const SeqItem& T)
{
  TCollection_SequenceNode* newnode = new TCollection_SequenceNode(T,(TCollection_SeqNode*)LastItem,(TCollection_SeqNode*)0L);
  PAppend ((void*)newnode);
}


// ---------------------------------------------------------
// Prepend : Push an element at the begining of the sequence
// ---------------------------------------------------------
void TCollection_Sequence::Prepend(const SeqItem& T)
{
  TCollection_SequenceNode* newnode = new TCollection_SequenceNode(T,(TCollection_SeqNode*)0L,(TCollection_SequenceNode*)FirstItem);
  PPrepend ((void*)newnode);
}

// -----------------------------------------------------------------
// InsertAfter : Insert an element after a given index in a sequence
// -----------------------------------------------------------------
void TCollection_Sequence::InsertAfter(const Standard_Integer Index, 
				       const SeqItem& T)
{
   Standard_OutOfRange_Raise_if ( Index < 0 || Index > Size, "");
   TCollection_SequenceNode* newnode = new TCollection_SequenceNode(T,(TCollection_SeqNode*)0L,(TCollection_SeqNode*)0L);
   PInsertAfter (Index,(void*)newnode);
}

// ---------------------------------------------------
// First : Returns the first element of the sequence
//         Raises an exeption if the sequence is empty
// ----------------------------------------------------
const SeqItem& TCollection_Sequence::First() const 
{
   Standard_NoSuchObject_Raise_if(Size == 0,"");
   return ((TCollection_SequenceNode*) FirstItem)->Value();
}

// ----------------------------------------------------
// Last : Returns the last element of the sequence
//         Raises an exeption if the sequence is empty
// ----------------------------------------------------
const SeqItem& TCollection_Sequence::Last() const 
{
   Standard_NoSuchObject_Raise_if(Size == 0,"");
   return ((TCollection_SequenceNode*) LastItem)->Value();
}

// -----------------------------------------
// Value : Return the value of a given index
// -----------------------------------------
const SeqItem& TCollection_Sequence::Value(const Standard_Integer Index) const
{
   Standard_OutOfRange_Raise_if(Index <= 0 || Index > Size,"");
   TCollection_Sequence* const aLocalTHIS = (TCollection_Sequence* const) this;
   aLocalTHIS->CurrentItem  =  (TCollection_SequenceNode*) Find(Index);
   aLocalTHIS->CurrentIndex = Index;
   return ((TCollection_SequenceNode*)CurrentItem)->Value();
}

// -------------------------------------------------------
// ChangeValue : Return the modifiable value of a given index
// -------------------------------------------------------
SeqItem & TCollection_Sequence::ChangeValue(const Standard_Integer Index)  
{
   Standard_OutOfRange_Raise_if(Index <= 0 || Index > Size,"");

   CurrentItem =  (TCollection_SequenceNode*) Find(Index);
   CurrentIndex = Index;
   return ((TCollection_SequenceNode*)CurrentItem)->Value();
}

void TCollection_Sequence::Remove(const Standard_Integer Index)
{
  TCollection_BaseSequence::Remove(Index,(void*)&delnode);
}

// ---------------------
// Remove a set of items
// --------------------- 
void TCollection_Sequence::Remove(const Standard_Integer FromIndex, const Standard_Integer ToIndex)
{
  TCollection_BaseSequence::Remove(FromIndex,ToIndex,(void*)&delnode);
}


//=======================================================================
//function : SetValue
//purpose  : Sets a value to an index
//=======================================================================
void TCollection_Sequence::SetValue (const Standard_Integer Index,
					    const SeqItem& I)
{
  ChangeValue(Index) = I ;
}

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