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       1              : // Copyright (C) 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              : #ifndef RUST_FEATURE_STORE_H
      20              : #define RUST_FEATURE_STORE_H
      21              : 
      22              : #include "rust-system.h"
      23              : #include "rust-diagnostics.h"
      24              : #include "rust-feature.h"
      25              : 
      26              : namespace Rust {
      27              : 
      28              : namespace Features {
      29              : 
      30              : /**
      31              :  * We don't know the whole set of valid features until a crate has been parsed.
      32              :  * We're collecting in this store all the potential feature errors and check
      33              :  * them later.
      34              :  */
      35         4521 : class EarlyFeatureGateStore
      36              : {
      37              :   std::queue<std::pair<Feature::Name, Error>> potential_errors;
      38              : 
      39              : public:
      40              :   static EarlyFeatureGateStore &get ();
      41              :   void add (Feature::Name name, Error error);
      42              : 
      43         4525 :   bool has_error () { return !potential_errors.empty (); }
      44              : 
      45              :   std::pair<Feature::Name, Error> get_error ();
      46              : };
      47              : } // namespace Features
      48              : 
      49              : } // namespace Rust
      50              : 
      51              : #endif // ! RUST_FEATURE_STORE_H