Line data    Source code

       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_HIR_TYPE_CHECK_INTRINSIC_H
      20              : #define RUST_HIR_TYPE_CHECK_INTRINSIC_H
      21              : 
      22              : #include "rust-tyty.h"
      23              : 
      24              : namespace Rust {
      25              : namespace Resolver {
      26              : 
      27              : enum class IntrinsicRuleType
      28              : {
      29              :   Bool,
      30              :   F32,
      31              :   F64,
      32              :   I32,
      33              :   Isize,
      34              :   U8,
      35              :   U64,
      36              :   Usize,
      37              :   Unit,
      38              :   Never,
      39              : 
      40              :   FirstGeneric,  // <T>
      41              :   SecondGeneric, // <U>
      42              : 
      43              :   ConstPtrFirstGeneric, // *const T
      44              :   MutPtrFirstGeneric,   // *mut T
      45              :   RefFirstGeneric,      // &T
      46              : 
      47              :   RefAdt,   // for caller_location() -> &'static crate::panic::Location<'static>
      48              :   MutPtrU8, // *mut u8
      49              :   RefStaticStr, // &'static str
      50              :   AssocTypePlaceholder,
      51              :   // for discriminant_value<T>(v: &T) -> <T as DiscriminantKind>::Discriminant
      52              : 
      53              :   TupleFirstGenericAndBool, // (T, bool)
      54              : 
      55              :   Fn_MutPtrU8,         // fn(*mut u8)
      56              :   Fn_MutPtrU8MutPtrU8, // fn(*mut u8, *mut u8)
      57              : };
      58              : 
      59      1561380 : struct IntrinsicRules
      60              : {
      61              :   size_t generic_count;
      62              :   std::vector<IntrinsicRuleType> param_types;
      63              :   IntrinsicRuleType return_type;
      64              : };
      65              : 
      66              : enum class IntrinsicCheckResult
      67              : {
      68              :   Valid,
      69              :   Invalid,
      70              : };
      71              : 
      72              : class IntrinsicChecker
      73              : {
      74              : public:
      75              :   static IntrinsicCheckResult check (const TyTy::FnType *fntype);
      76              : 
      77              : private:
      78              :   static const std::unordered_map<std::string, IntrinsicRules> intrinsic_rules;
      79              :   static bool check_type (const TyTy::BaseType *actual,
      80              :                           IntrinsicRuleType expected,
      81              :                           const TyTy::FnType *fntype);
      82              :   static std::string expected_intrinsic_as_string (const TyTy::FnType *fntype);
      83              :   static std::string found_intrinsic_as_string (const TyTy::FnType *fntype);
      84              : };
      85              : 
      86              : } // namespace Resolver
      87              : } // namespace Rust
      88              : 
      89              : #endif