libgrust/libproc_macro/bridge/span.rs

   1 // Copyright (C) 2023-2024 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU Proc Macro Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // Under Section 7 of GPL version 3, you are granted additional
  15 // permissions described in the GCC Runtime Library Exception, version
  16 // 3.1, as published by the Free Software Foundation.
  17
  18 // You should have received a copy of the GNU General Public License and
  19 // a copy of the GCC Runtime Library Exception along with this program;
  20 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  21 // <http://www.gnu.org/licenses/>.
  22
  23 //! Bridge internal span representation and functions
  24 //!
  25 //! # Note
  26 //!
  27 //! All methods accessing source location in rust are unstable, hence this
  28 //! implementation with an empty structure.
  29
  30 /// # Note: Gcc does not have a span interner, a span will not contain an index
  31 #[derive(Copy, Clone, Debug, Default)]
  32 #[repr(C)]
  33 pub struct Span {
  34     location: u32,
  35 }
  36
  37 impl Span {
  38     pub fn call_site() -> Self {
  39         // FIXME: implement this function properly
  40         Span::default()
  41     }
  42
  43     pub fn mixed_site() -> Self {
  44         // FIXME: implement this function properly
  45         Span::default()
  46     }
  47
  48     pub fn resolved_at(&self, _other: Span) -> Self {
  49         // FIXME: implement this function properly
  50         Span::default()
  51     }
  52
  53     pub fn located_at(&self, _other: Span) -> Self {
  54         // FIXME: implement this function properly
  55         Span::default()
  56     }
  57
  58     pub fn source_text(&self) -> Option<String> {
  59         // FIXME: implement this function properly
  60         None
  61     }
  62 }