gcc/gcc-rich-location.c

   1 /* Implementation of gcc_rich_location class
   2    Copyright (C) 2014-2016 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 #include "config.h"
  21 #include "system.h"
  22 #include "coretypes.h"
  23 #include "tm.h"
  24 #include "rtl.h"
  25 #include "hash-set.h"
  26 #include "machmode.h"
  27 #include "vec.h"
  28 #include "double-int.h"
  29 #include "input.h"
  30 #include "alias.h"
  31 #include "symtab.h"
  32 #include "wide-int.h"
  33 #include "inchash.h"
  34 #include "tree-core.h"
  35 #include "tree.h"
  36 #include "diagnostic-core.h"
  37 #include "gcc-rich-location.h"
  38 #include "print-tree.h"
  39 #include "pretty-print.h"
  40 #include "intl.h"
  41 #include "cpplib.h"
  42 #include "diagnostic.h"
  43
  44 /* Extract any source range information from EXPR and write it
  45    to *R.  */
  46
  47 static bool
  48 get_range_for_expr (tree expr, location_range *r)
  49 {
  50   if (EXPR_HAS_RANGE (expr))
  51     {
  52       source_range sr = EXPR_LOCATION_RANGE (expr);
  53
  54       /* Do we have meaningful data?  */
  55       if (sr.m_start && sr.m_finish)
  56         {
  57           r->m_start = expand_location (sr.m_start);
  58           r->m_finish = expand_location (sr.m_finish);
  59           return true;
  60         }
  61     }
  62
  63   return false;
  64 }
  65
  66 /* Add a range to the rich_location, covering expression EXPR. */
  67
  68 void
  69 gcc_rich_location::add_expr (tree expr)
  70 {
  71   gcc_assert (expr);
  72
  73   location_range r;
  74   r.m_show_caret_p = false;
  75   if (get_range_for_expr (expr, &r))
  76     add_range (&r);
  77 }
  78
  79 /* If T is an expression, add a range for it to the rich_location.  */
  80
  81 void
  82 gcc_rich_location::maybe_add_expr (tree t)
  83 {
  84   if (EXPR_P (t))
  85     add_expr (t);
  86 }