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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: aststack.cxx,v $
*
* $Revision: 1.4 $
*
* last change: $Author: obo $ $Date: 2006-09-17 08:13:00 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* 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.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_idlc.hxx"
#ifndef _RTL_ALLOC_H_
#include <rtl/alloc.h>
#endif
#ifndef _IDLC_ASTSTACK_HXX_
#include <idlc/aststack.hxx>
#endif
#ifndef _IDLC_ASTSCOPE_HXX_
#include <idlc/astscope.hxx>
#endif
#define STACKSIZE_INCREMENT 64
AstStack::AstStack()
: m_stack((AstScope**)rtl_allocateZeroMemory(sizeof(AstScope*) * STACKSIZE_INCREMENT))
, m_size(STACKSIZE_INCREMENT)
, m_top(0)
{
}
AstStack::~AstStack()
{
for(sal_uInt32 i=0; i < m_top; i++)
{
if (m_stack[i])
delete(m_stack[i]);
}
rtl_freeMemory(m_stack);
}
sal_uInt32 AstStack::depth()
{
return m_top;
}
AstScope* AstStack::top()
{
if (m_top < 1)
return NULL;
return m_stack[m_top - 1];
}
AstScope* AstStack::bottom()
{
if (m_top == 0)
return NULL;
return m_stack[0];
}
AstScope* AstStack::nextToTop()
{
AstScope *tmp, *retval;
if (depth() < 2)
return NULL;
tmp = top(); // Save top
(void) pop(); // Pop it
retval = top(); // Get next one down
(void) push(tmp); // Push top back
return retval; // Return next one down
}
AstScope* AstStack::topNonNull()
{
for (sal_uInt32 i = m_top; i > 0; i--)
{
if ( m_stack[i - 1] )
return m_stack[i - 1];
}
return NULL;
}
AstStack* AstStack::push(AstScope* pScope)
{
AstScope **tmp;
// AstDeclaration *pDecl = ScopeAsDecl(pScope);
sal_uInt32 newSize;
sal_uInt32 i;
// Make sure there's space for one more
if (m_size == m_top)
{
newSize = m_size;
newSize += STACKSIZE_INCREMENT;
tmp = (AstScope**)rtl_allocateZeroMemory(sizeof(AstScope*) * newSize);
for(i=0; i < m_size; i++)
tmp[i] = m_stack[i];
rtl_freeMemory(m_stack);
m_stack = tmp;
}
// Insert new scope
m_stack[m_top++] = pScope;
return this;
}
void AstStack::pop()
{
AstScope *pScope;
if (m_top < 1)
return;
pScope = m_stack[--m_top];
}
void AstStack::clear()
{
m_top = 0;
}
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