148 lines
3.3 KiB
C++
148 lines
3.3 KiB
C++
/*************************************************************************
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: aststack.cxx,v $
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*
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* $Revision: 1.2 $
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*
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* last change: $Author: rt $ $Date: 2005-09-07 18:08:47 $
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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*
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2005 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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************************************************************************/
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#ifndef _RTL_ALLOC_H_
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#include <rtl/alloc.h>
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#endif
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#ifndef _IDLC_ASTSTACK_HXX_
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#include <idlc/aststack.hxx>
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#endif
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#ifndef _IDLC_ASTSCOPE_HXX_
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#include <idlc/astscope.hxx>
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#endif
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#define STACKSIZE_INCREMENT 64
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AstStack::AstStack()
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: m_size(STACKSIZE_INCREMENT)
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, m_top(0)
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, m_stack((AstScope**)rtl_allocateZeroMemory(sizeof(AstScope*) * STACKSIZE_INCREMENT))
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{
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}
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AstStack::~AstStack()
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{
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for(sal_uInt32 i=0; i < m_top; i++)
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{
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if (m_stack[i])
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delete(m_stack[i]);
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}
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rtl_freeMemory(m_stack);
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}
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sal_uInt32 AstStack::depth()
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{
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return m_top;
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}
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AstScope* AstStack::top()
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{
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if (m_top < 1)
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return NULL;
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return m_stack[m_top - 1];
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}
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AstScope* AstStack::bottom()
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{
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if (m_top == 0)
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return NULL;
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return m_stack[0];
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}
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AstScope* AstStack::nextToTop()
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{
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AstScope *tmp, *retval;
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if (depth() < 2)
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return NULL;
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tmp = top(); // Save top
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(void) pop(); // Pop it
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retval = top(); // Get next one down
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(void) push(tmp); // Push top back
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return retval; // Return next one down
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}
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AstScope* AstStack::topNonNull()
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{
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for (sal_uInt32 i = m_top - 1; i >= 0; i--)
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{
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if ( m_stack[i] )
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return m_stack[i];
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}
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return NULL;
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}
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AstStack* AstStack::push(AstScope* pScope)
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{
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AstScope **tmp;
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// AstDeclaration *pDecl = ScopeAsDecl(pScope);
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sal_uInt32 newSize;
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sal_uInt32 i;
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// Make sure there's space for one more
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if (m_size == m_top)
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{
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newSize = m_size;
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newSize += STACKSIZE_INCREMENT;
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tmp = (AstScope**)rtl_allocateZeroMemory(sizeof(AstScope*) * newSize);
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for(i=0; i < m_size; i++)
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tmp[i] = m_stack[i];
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rtl_freeMemory(m_stack);
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m_stack = tmp;
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}
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// Insert new scope
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m_stack[m_top++] = pScope;
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return this;
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}
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void AstStack::pop()
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{
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AstScope *pScope;
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if (m_top < 1)
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return;
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pScope = m_stack[--m_top];
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}
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void AstStack::clear()
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{
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m_top = 0;
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}
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