Line data    Source code

       1              : // Copyright (C) 2025-2026 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              : #include "rust-system.h"
      20              : #include "optional.h"
      21              : #include "rust-lang-item.h"
      22              : #include "rust-mapping-common.h"
      23              : #include <ast/rust-ast-full-decls.h>
      24              : 
      25              : namespace Rust {
      26              : 
      27              : /*
      28              :  * Used to convert different path segment object references
      29              :  * into SimplePathSegment/PathIdentSegment references
      30              :  *
      31              :  * unwrap_type_segment:
      32              :  *   expands to a call to unwrap_type_segment_inner::unwrap,
      33              :  *   used for type inference
      34              :  */
      35              : #define unwrap_type_segment(x)                                                 \
      36              :   (unwrap_type_segment_inner<typename std::remove_const<                       \
      37              :      typename std::remove_reference<decltype (x)>::type>::type>::unwrap (x))
      38              : 
      39              : template <class T> class unwrap_type_segment_inner;
      40              : 
      41              : /* base case */
      42              : template <> class unwrap_type_segment_inner<AST::SimplePathSegment>
      43              : {
      44              : public:
      45              :   /* The return type of unwrap */
      46              :   using ret = AST::SimplePathSegment;
      47              : 
      48              :   /* non-const qualified unwrap */
      49              :   static AST::SimplePathSegment &unwrap (AST::SimplePathSegment &x)
      50              :   {
      51              :     return x;
      52              :   }
      53              : 
      54              :   /* const qualified unwrap */
      55              :   static const AST::SimplePathSegment &unwrap (const AST::SimplePathSegment &x)
      56              :   {
      57              :     return x;
      58              :   }
      59              : };
      60              : 
      61              : /* case which dereferences unique_ptr */
      62              : template <class T> class unwrap_type_segment_inner<std::unique_ptr<T>>
      63              : {
      64              : public:
      65              :   using ret = typename unwrap_type_segment_inner<T>::ret;
      66              : 
      67        52459 :   static ret &unwrap (std::unique_ptr<T> &x)
      68              :   {
      69        52459 :     return unwrap_type_segment (*x);
      70              :   }
      71        56160 :   static const ret &unwrap (const std::unique_ptr<T> &x)
      72              :   {
      73        56160 :     return unwrap_type_segment (*x);
      74              :   }
      75              : };
      76              : 
      77              : /* case which handles objects with a get_ident_segment member function */
      78              : template <class T> class unwrap_type_segment_inner
      79              : {
      80              : public:
      81              :   using ret = AST::PathIdentSegment;
      82              : 
      83       108690 :   static ret &unwrap (T &x) { return x.get_ident_segment (); }
      84        54407 :   static const ret &unwrap (const T &x) { return x.get_ident_segment (); }
      85              : };
      86              : 
      87              : /*
      88              :  * Used to get the node id of a path segment object
      89              :  */
      90              : NodeId unwrap_segment_node_id (const AST::TypePathSegment &seg);
      91              : 
      92              : NodeId unwrap_segment_node_id (const AST::SimplePathSegment &seg);
      93              : 
      94              : NodeId unwrap_segment_node_id (const AST::PathExprSegment &seg);
      95              : 
      96              : template <class T>
      97              : NodeId
      98        56130 : unwrap_segment_node_id (const std::unique_ptr<T> &ptr)
      99              : {
     100        56130 :   return unwrap_segment_node_id (*ptr);
     101              : }
     102              : 
     103              : /**
     104              :  * Used to check if a path segment is associated with a lang item
     105              :  */
     106              : tl::optional<LangItem::Kind>
     107              : unwrap_segment_get_lang_item (const AST::TypePathSegment &seg);
     108              : 
     109              : tl::optional<LangItem::Kind>
     110              : unwrap_segment_get_lang_item (const AST::SimplePathSegment &seg);
     111              : 
     112              : tl::optional<LangItem::Kind>
     113              : unwrap_segment_get_lang_item (const AST::PathExprSegment &seg);
     114              : 
     115              : template <class T>
     116              : tl::optional<LangItem::Kind>
     117       108971 : unwrap_segment_get_lang_item (const std::unique_ptr<T> &ptr)
     118              : {
     119       108971 :   return unwrap_segment_get_lang_item (*ptr);
     120              : }
     121              : 
     122              : /**
     123              :  * Used to output a path in error messages
     124              :  */
     125              : 
     126              : inline static std::string
     127           25 : unwrap_segment_error_string (const AST::TypePath &path)
     128              : {
     129           25 :   return path.make_debug_string ();
     130              : }
     131              : 
     132              : inline static std::string
     133            0 : unwrap_segment_error_string (const AST::PathInExpression &path)
     134              : {
     135            0 :   return path.as_simple_path ().as_string ();
     136              : }
     137              : 
     138              : } // namespace Rust