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       1                 :             : // Copyright (C) 2020-2024 Free Software Foundation, Inc.
       2                 :             : 
       3                 :             : // This file is part of GCC.
       4                 :             : 
       5                 :             : // GCC is free software; you can redistribute it and/or modify it under
       6                 :             : // the terms of the GNU General Public License as published by the Free
       7                 :             : // Software Foundation; either version 3, or (at your option) any later
       8                 :             : // version.
       9                 :             : 
      10                 :             : // GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      11                 :             : // WARRANTY; without even the implied warranty of MERCHANTABILITY or
      12                 :             : // FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      13                 :             : // for more details.
      14                 :             : 
      15                 :             : // You should have received a copy of the GNU General Public License
      16                 :             : // along with GCC; see the file COPYING3.  If not see
      17                 :             : // <http://www.gnu.org/licenses/>.
      18                 :             : 
      19                 :             : // rust-linemap.cc -- GCC implementation of Linemap.
      20                 :             : 
      21                 :             : #include "rust-linemap.h"
      22                 :             : 
      23                 :             : Linemap *Linemap::instance_ = NULL;
      24                 :             : 
      25                 :             : // Start getting locations from a new file.
      26                 :             : 
      27                 :             : void
      28                 :        3746 : Linemap::start_file (const char *file_name, unsigned line_begin)
      29                 :             : {
      30                 :        3746 :   if (this->in_file_)
      31                 :          50 :     linemap_add (line_table, LC_LEAVE, 0, NULL, 0);
      32                 :        3746 :   linemap_add (line_table, LC_ENTER, 0, file_name, line_begin);
      33                 :        3746 :   this->in_file_ = true;
      34                 :        3746 : }
      35                 :             : 
      36                 :             : // Stringify a location
      37                 :             : 
      38                 :             : std::string
      39                 :           0 : Linemap::location_to_string (location_t location)
      40                 :             : {
      41                 :           0 :   const line_map_ordinary *lmo;
      42                 :           0 :   location_t resolved_location;
      43                 :             : 
      44                 :             :   // Screen out unknown and predeclared locations; produce output
      45                 :             :   // only for simple file:line locations.
      46                 :           0 :   resolved_location = linemap_resolve_location (line_table, location,
      47                 :             :                                                 LRK_SPELLING_LOCATION, &lmo);
      48                 :           0 :   if (lmo == NULL || resolved_location < RESERVED_LOCATION_COUNT)
      49                 :           0 :     return "";
      50                 :           0 :   const char *path = LINEMAP_FILE (lmo);
      51                 :           0 :   if (!path)
      52                 :           0 :     return "";
      53                 :             : 
      54                 :             :   // Strip the source file down to the base file, to reduce clutter.
      55                 :           0 :   std::stringstream ss;
      56                 :           0 :   ss << lbasename (path) << ":" << SOURCE_LINE (lmo, location) << ":"
      57                 :           0 :      << SOURCE_COLUMN (lmo, location);
      58                 :           0 :   return ss.str ();
      59                 :           0 : }
      60                 :             : 
      61                 :             : // Stop getting locations.
      62                 :             : 
      63                 :             : void
      64                 :           0 : Linemap::stop ()
      65                 :             : {
      66                 :           0 :   linemap_add (line_table, LC_LEAVE, 0, NULL, 0);
      67                 :           0 :   this->in_file_ = false;
      68                 :           0 : }
      69                 :             : 
      70                 :             : // Return the Linemap to use for the gcc backend.
      71                 :             : 
      72                 :             : Linemap *
      73                 :        3696 : rust_get_linemap ()
      74                 :             : {
      75                 :        3696 :   return new Linemap;
      76                 :             : }