gcc/rust/ast/rust-ast-formatting.cc

   1 /* General AST-related method implementations for Rust frontend.
   2    Copyright (C) 2009-2025 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 "rust-ast-full.h"
  21
  22 namespace Rust {
  23 namespace AST {
  24
  25 std::string
  26 indent_spaces (enum indent_mode mode)
  27 {
  28   static int indent = 0;
  29   std::string str = "";
  30   if (out == mode)
  31     indent--;
  32   for (int i = 0; i < indent; i++)
  33     str += " ";
  34   if (enter == mode)
  35     indent++;
  36
  37   return str;
  38 }
  39
  40 std::string
  41 get_string_in_delims (std::string str_input, DelimType delim_type)
  42 {
  43   switch (delim_type)
  44     {
  45     case PARENS:
  46       return "(" + str_input + ")";
  47     case SQUARE:
  48       return "[" + str_input + "]";
  49     case CURLY:
  50       return "{" + str_input + "}";
  51     default:
  52       return "ERROR-MARK-STRING (delims)";
  53     }
  54   rust_unreachable ();
  55 }
  56
  57 std::string
  58 get_mode_dump_desc (AttrMode mode)
  59 {
  60   switch (mode)
  61     {
  62     case OUTER:
  63       return "outer attributes";
  64     case INNER:
  65       return "inner attributes";
  66     default:
  67       rust_unreachable ();
  68       return "";
  69     }
  70 }
  71
  72 std::string
  73 append_attributes (std::vector<Attribute> attrs, AttrMode mode)
  74 {
  75   indent_spaces (enter);
  76
  77   std::string str
  78     = "\n" + indent_spaces (stay) + get_mode_dump_desc (mode) + ": ";
  79   // str += "\n" + indent_spaces (stay) + "inner attributes: ";
  80   if (attrs.empty ())
  81     {
  82       str += "none";
  83     }
  84   else
  85     {
  86       /* note that this does not print them with outer or "inner attribute"
  87        * syntax - just prints the body */
  88       for (const auto &attr : attrs)
  89         str += "\n" + indent_spaces (stay) + attr.as_string ();
  90     }
  91
  92   indent_spaces (out);
  93
  94   return str;
  95 }
  96
  97 std::string
  98 unquote_string (std::string input)
  99 {
 100   rust_assert (input.front () == '"');
 101   rust_assert (input.back () == '"');
 102   return input.substr (1, input.length () - 2);
 103 }
 104
 105 } // namespace AST
 106 } // namespace Rust