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 AstStack::~AstStack()
  27 {
  28     for (AstScope* p : m_stack)
  29         delete p;
  30 }
  31
  32 AstScope* AstStack::top()
  33 {
  34     if (m_stack.empty())
  35         return nullptr;
  36     return m_stack.back();
  37 }
  38
  39 AstScope* AstStack::bottom()
  40 {
  41     if (m_stack.empty())
  42         return nullptr;
  43     return m_stack.front();
  44 }
  45
  46 AstScope* AstStack::nextToTop()
  47 {
  48     if (m_stack.size() < 2)
  49         return nullptr;
  50
  51     return m_stack[m_stack.size() - 2];
  52 }
  53
  54 AstScope* AstStack::topNonNull()
  55 {
  56     for (sal_uInt32 i = m_stack.size(); i > 0; i--)
  57     {
  58         if (m_stack[i - 1])
  59             return m_stack[i - 1];
  60     }
  61     return nullptr;
  62 }
  63
  64 AstStack* AstStack::push(AstScope* pScope)
  65 {
  66     m_stack.push_back(pScope);
  67     return this;
  68 }
  69
  70 void AstStack::pop()
  71 {
  72     if (m_stack.empty())
  73         return;
  74     m_stack.pop_back();
  75 }
  76
  77 void AstStack::clear() { m_stack.clear(); }
  78
  79 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */