liboce-foundation-dev 0.17.2-2 / usr / include / oce / TCollection_Array2.gxx

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// Copyright (c) 1993-1999 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.

#include <Standard_DimensionMismatch.hxx>
#include <Standard_RangeError.hxx>
#include <Standard_OutOfMemory.hxx>
#include <Standard.hxx>

//=======================================================================
//function : Allocate
//purpose  : Allocate memory for the array, set up indirection table
//=======================================================================

void TCollection_Array2::Allocate ()
{
  Standard_Integer RowSize    = myUpperColumn-myLowerColumn+1;
  Standard_Integer ColumnSize = myUpperRow-myLowerRow+1;

  if (myDeletable) {
    // allocation of the data in the array
     
    Standard_Integer Size = RowSize * ColumnSize;
    
//  Modified by Sergey KHROMOV - Mon Feb 10 11:46:14 2003 Begin
//     Standard_RangeError_Raise_if(( RowSize < 0  || ColumnSize < 0 ),
// 				 "TCollection_Array2::Create");
    Standard_RangeError_Raise_if(( RowSize <= 0  || ColumnSize <= 0 ),
				 "TCollection_Array2::Create");
//  Modified by Sergey KHROMOV - Mon Feb 10 11:46:15 2003 End
    myData = new Array2Item [Size];

    if (!myData) Standard_OutOfMemory::Raise("Array2 : Allocation failed");
  }
  
  // allocation of the indirection table (pointers on rows)
  Array2Item*  p = (Array2Item*) myData;
  Array2Item** q = (Array2Item**)Standard::Allocate(ColumnSize * sizeof(Array2Item*));

  for (Standard_Integer i = 0; i < ColumnSize; i++) {
    q[i] = p - myLowerColumn;
    p += RowSize;
  }
  
  myData = (void*) (q - myLowerRow);
}

//=======================================================================
//function : TCollection_Array2
//purpose  : 
//=======================================================================

TCollection_Array2::TCollection_Array2 (const Standard_Integer R1, 
                                        const Standard_Integer R2,
                                        const Standard_Integer C1, 
                                        const Standard_Integer C2) :
       myLowerRow(R1),
       myLowerColumn(C1),
       myUpperRow(R2),
       myUpperColumn(C2),
       myDeletable(Standard_True)
{
  Allocate ();
}

//=======================================================================
//function : TCollection_Array2
//purpose  : User allocated data
//=======================================================================

TCollection_Array2::TCollection_Array2 (const Array2Item& Item,
					const Standard_Integer R1, 
					const Standard_Integer R2,
					const Standard_Integer C1, 
					const Standard_Integer C2) :
       myLowerRow(R1),
       myLowerColumn(C1),
       myUpperRow(R2),
       myUpperColumn(C2),
       myDeletable(Standard_False),
       myData((void*)&Item)
{
  Allocate ();
}

//=======================================================================
//function : Init
//purpose  : 
//=======================================================================

void TCollection_Array2::Init (const Array2Item& V) 
{
  Standard_Integer Size = RowLength() * ColLength();
  Array2Item* p = &(ChangeValue(myLowerRow,myLowerColumn));
  for (Standard_Integer I = 0; I < Size ; I++) p[I] = V;
}

//=======================================================================
//function : Destroy
//purpose  : 
//=======================================================================

void TCollection_Array2::Destroy () 
{
  Array2Item** anItemPtr = ((Array2Item**)myData + myLowerRow);
  
  // delete the data
  //
  if (myDeletable) 
    delete [] &ChangeValue(myLowerRow,myLowerColumn);

  // delete the indirection table
  Standard::Free (anItemPtr);
}

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

const TCollection_Array2& TCollection_Array2::Assign 
  (const TCollection_Array2& Right)
{
  Standard_Integer MaxColumn = RowLength() ;
  Standard_Integer MaxRow    = ColLength() ;
  Standard_Integer MaxSize   = MaxColumn * MaxRow;

  Standard_DimensionMismatch_Raise_if(MaxRow != Right.ColLength() ||
                                      MaxColumn != Right.RowLength(),
				      "Array2::Operator=");

  Array2Item* p = &ChangeValue(myLowerRow,myLowerColumn);
  const Array2Item* q = &Right.Value(Right.LowerRow(),Right.LowerCol());
  for (Standard_Integer i=0; i<MaxSize; i++) {
    p[i] = q[i];
  }
  return *this;
}

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