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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <rtl/alloc.h>
#include <idlc/aststack.hxx>
#include <idlc/astscope.hxx>
#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);
}
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()
{
if (m_top < 1)
return;
--m_top;
}
void AstStack::clear()
{
m_top = 0;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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