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111
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1 /* Determining the results of applying fix-it hints.
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145
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2 Copyright (C) 2016-2020 Free Software Foundation, Inc.
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111
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify it under
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7 the terms of the GNU General Public License as published by the Free
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8 Software Foundation; either version 3, or (at your option) any later
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9 version.
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10
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11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with GCC; see the file COPYING3. If not see
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18 <http://www.gnu.org/licenses/>. */
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19
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20 #ifndef GCC_EDIT_CONTEXT_H
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21 #define GCC_EDIT_CONTEXT_H
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22
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23 #include "typed-splay-tree.h"
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24
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25 class edit_context;
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26 class edited_file;
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27
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28 /* A set of changes to the source code.
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29
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30 The changes are "atomic" - if any changes can't be applied,
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31 none of them can be (tracked by the m_valid flag).
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32 Similarly, attempts to add the changes from a rich_location flagged
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33 as containing invalid changes mean that the whole of the edit_context
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34 is flagged as invalid.
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35
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36 A complication here is that fix-its are expressed relative to coordinates
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37 in the files when they were parsed, before any changes have been made, and
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38 so if there's more that one fix-it to be applied, we have to adjust
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39 later fix-its to allow for the changes made by earlier ones. This
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40 is done by the various "get_effective_column" methods. */
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41
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42 class edit_context
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43 {
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44 public:
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45 edit_context ();
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46
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47 bool valid_p () const { return m_valid; }
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48
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49 void add_fixits (rich_location *richloc);
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50
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51 char *get_content (const char *filename);
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52
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53 int get_effective_column (const char *filename, int line, int column);
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54
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55 char *generate_diff (bool show_filenames);
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56 void print_diff (pretty_printer *pp, bool show_filenames);
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57
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58 private:
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59 bool apply_fixit (const fixit_hint *hint);
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60 edited_file *get_file (const char *filename);
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61 edited_file &get_or_insert_file (const char *filename);
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62
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63 bool m_valid;
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64 typed_splay_tree<const char *, edited_file *> m_files;
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65 };
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66
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67 #endif /* GCC_EDIT_CONTEXT_H. */
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