idlc/source/aststack.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <rtl/alloc.h>
  21 #include <aststack.hxx>
  22 #include <astscope.hxx>
  23
  24 AstStack::AstStack()
  25 {
  26 }
  27
  28 AstStack::~AstStack()
  29 {
  30     for (AstScope* p : m_stack)
  31         delete p;
  32 }
  33
  34
  35 AstScope* AstStack::top()
  36 {
  37     if (m_stack.empty())
  38         return nullptr;
  39     return m_stack.back();
  40 }
  41
  42 AstScope* AstStack::bottom()
  43 {
  44     if (m_stack.empty())
  45         return nullptr;
  46     return m_stack.front();
  47 }
  48
  49 AstScope* AstStack::nextToTop()
  50 {
  51     if (m_stack.size() < 2)
  52         return nullptr;
  53
  54     return m_stack[m_stack.size() - 2];
  55 }
  56
  57 AstScope* AstStack::topNonNull()
  58 {
  59     for (sal_uInt32 i = m_stack.size(); i > 0; i--)
  60     {
  61         if ( m_stack[i - 1] )
  62             return m_stack[i - 1];
  63     }
  64     return nullptr;
  65 }
  66
  67 AstStack* AstStack::push(AstScope* pScope)
  68 {
  69     m_stack.push_back(pScope);
  70     return this;
  71 }
  72
  73 void AstStack::pop()
  74 {
  75     if (m_stack.empty())
  76         return;
  77     m_stack.pop_back();
  78 }
  79
  80 void AstStack::clear()
  81 {
  82    m_stack.clear();
  83 }
  84
  85 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */