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annotate libinterp/parse-tree/pt-delimiter-list.h @ 33308:9d7e418f0121

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new delimiter_list functions * pt-delilmiter-list.h (tree_delimiter_list::empty, tree_delimiter_list::beg_pos, tree_delimiter_list::end_pos): New functions.
author John W. Eaton <jwe@octave.org>
date Thu, 04 Apr 2024 00:52:49 -0400
parents 979a51024c94
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2024 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if ! defined (octave_tree_delimiter_list_h)
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27 #define octave_tree_delimiter_list_h 1
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28
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29 #include "octave-config.h"
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30
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31 #include <stack>
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32
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33 #include "filepos.h"
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34 #include "token.h"
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35
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36 OCTAVE_BEGIN_NAMESPACE(octave)
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37
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38 class tree_delimiter_list
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39 {
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40 public:
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41
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42 typedef std::pair<token, token> element_type;
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43
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44 OCTAVE_DEFAULT_CONSTRUCT_COPY_MOVE_DELETE (tree_delimiter_list)
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45
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46 size_t count () const { return m_delimiters.size (); }
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47
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48 bool empty () const { return m_delimiters.empty (); }
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49
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50 void push (const token& open_delim, const token& close_delim)
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51 {
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52 m_delimiters.push (element_type (open_delim, close_delim));
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53 }
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54
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55 filepos beg_pos () const
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56 {
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57 if (m_delimiters.empty ())
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58 return filepos ();
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59
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60 const element_type& elt = m_delimiters.top ();
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61 return elt.first.beg_pos ();
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62 }
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63
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64 filepos end_pos () const
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65 {
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66 if (m_delimiters.empty ())
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67 return filepos ();
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68
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69 const element_type& elt = m_delimiters.top ();
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70 return elt.second.end_pos ();
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71 }
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72
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73 private:
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74
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75 std::stack<element_type> m_delimiters;
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76 };
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77
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78 OCTAVE_END_NAMESPACE(octave)
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79
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80 #endif