occt/src/IntTools/IntTools_CArray1.gxx

// Created on: 2000-05-26
// Created by: Peter KURNEV
// Copyright (c) 2000-2014 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.

//=======================================================================
//function : IntTools_CArray1
//purpose  : 
//=======================================================================
IntTools_CArray1::IntTools_CArray1 (const Standard_Integer Length): 
  myStart(NULL), 
  myLength(0), 
  myIsAllocated(Standard_False)
{
  Resize(Length);
}

//=======================================================================
//function : IntTools_CArray1
//purpose  : 
//=======================================================================
  IntTools_CArray1::IntTools_CArray1 (const Array1Item& Item,
				      const Standard_Integer Length):
  myLength(Length), 
  myIsAllocated(Standard_False)
{
  Standard_ConstructionError_Raise_if(Length < 0,"IntTools_CArray1:: Length < 0");
  myStart = (void*)(&Item); 
}

//=======================================================================
//function : Init
//purpose  : 
//=======================================================================
  void IntTools_CArray1::Init (const Array1Item& V) 
{
  Array1Item* p = (Array1Item*) myStart;
  for(Standard_Integer i = 0; i < Length() ; i++) {
    *p++ = V;
  }
}

//=======================================================================
//function : Destroy
//purpose  : 
//=======================================================================
  void IntTools_CArray1::Destroy() 
{
  if (myIsAllocated) {
    delete [] (Array1Item *)myStart;
    myIsAllocated = Standard_False;
  }
  myStart = NULL;
}

//=======================================================================
//function : IsEqual
//purpose  : 
//=======================================================================
  Standard_Boolean IntTools_CArray1::IsEqual(const IntTools_CArray1& Other) const
{
  if (&Other == this)
    return Standard_True;
  else if (Length() != Other.Length()) 
    return Standard_False;
  else if (Length() == 0) 
    return Standard_True;
  //
  return Standard_False;
}


//=======================================================================
//function : Resize
//purpose  : 
//=======================================================================
  void IntTools_CArray1::Resize(const Standard_Integer theNewLength)
{
  Standard_ConstructionError_Raise_if(theNewLength < 0,"IntTools_CArray1: length < 0");
  
  Array1Item* p = NULL;
  
  Destroy(); 

  myLength = theNewLength;
  
  if (theNewLength > 0) {
    // default creator called for each item of the array
    p =  new Array1Item[theNewLength];
    if (!p) throw Standard_OutOfMemory("IntTools_CArray1 : Allocation failed.");
    myIsAllocated = Standard_True;
  }
  
  myStart = (void*) p;
}

//=======================================================================
//function : Append
//purpose  : 
//=======================================================================
  void IntTools_CArray1::Append (const Array1Item& Value)
{
  const Standard_Integer theNewLength=myLength+1;

  Array1Item* p = NULL;
  
  if (theNewLength > 0) {
    // default creator called for each item of the array
    p =  new Array1Item[theNewLength];
    if (!p) throw Standard_OutOfMemory("IntTools_CArray1 : Allocation failed.");
    
    if (myLength!=0) {
      Standard_Integer aBytesPerItem=sizeof(Array1Item);
      memcpy (p, myStart, myLength*aBytesPerItem);
    }

    *(p+myLength)=Value;
    Destroy();
    myLength = theNewLength;
    myIsAllocated = Standard_True;
  }
  
  myStart = (void*) p;
}
//=======================================================================
//function : Value
//purpose  : 
//=======================================================================
  const Array1Item& IntTools_CArray1::Value(const Standard_Integer Index) const
{
  if (myLength <1 || Index < 0 || Index >= myLength)
    throw Standard_OutOfRange("IntTools_CArray1::Value");
  
  return ((Array1Item *)myStart)[Index];
}

//=======================================================================
//function : SetValue
//purpose  : 
//=======================================================================
  void IntTools_CArray1::SetValue (const Standard_Integer Index,
				   const Array1Item& Value)
{
  ChangeValue(Index) = Value;
}


//=======================================================================
//function : ChangeValue
//purpose  : 
//=======================================================================
  Array1Item& IntTools_CArray1::ChangeValue(const Standard_Integer Index)
{
  if (myLength < 1 || Index < 0 || Index >= myLength)
    throw Standard_OutOfRange("IntTools_CArray1::ChangeValue");

  return ((Array1Item *)myStart)[Index];
}