gcc/rust/typecheck/rust-hir-type-check-pattern.h

   1 // Copyright (C) 2020-2025 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_PATTERN
  20 #define RUST_HIR_TYPE_CHECK_PATTERN
  21
  22 #include "rust-hir-type-check-base.h"
  23 #include "rust-hir-visitor.h"
  24
  25 namespace Rust {
  26 namespace Resolver {
  27
  28 class TypeCheckPattern : public TypeCheckBase, public HIR::HIRPatternVisitor
  29 {
  30 public:
  31   static TyTy::BaseType *Resolve (HIR::Pattern *pattern,
  32                                   TyTy::BaseType *parent);
  33
  34   void visit (HIR::PathInExpression &pattern) override;
  35   void visit (HIR::StructPattern &pattern) override;
  36   void visit (HIR::TupleStructPattern &pattern) override;
  37   void visit (HIR::WildcardPattern &pattern) override;
  38   void visit (HIR::TuplePattern &pattern) override;
  39   void visit (HIR::LiteralPattern &pattern) override;
  40   void visit (HIR::RangePattern &pattern) override;
  41   void visit (HIR::IdentifierPattern &pattern) override;
  42   void visit (HIR::QualifiedPathInExpression &pattern) override;
  43   void visit (HIR::ReferencePattern &pattern) override;
  44   void visit (HIR::SlicePattern &pattern) override;
  45   void visit (HIR::AltPattern &pattern) override;
  46
  47 private:
  48   TypeCheckPattern (TyTy::BaseType *parent);
  49
  50   TyTy::BaseType *typecheck_range_pattern_bound (
  51     std::unique_ptr<Rust::HIR::RangePatternBound> &bound,
  52     Analysis::NodeMapping mappings, location_t locus);
  53
  54   void emit_pattern_size_error (const HIR::Pattern &pattern,
  55                                 size_t expected_field_count,
  56                                 size_t got_field_count);
  57
  58   TyTy::BaseType *parent;
  59   TyTy::BaseType *infered;
  60 };
  61
  62 class ClosureParamInfer : private TypeCheckBase, private HIR::HIRPatternVisitor
  63 {
  64 public:
  65   static TyTy::BaseType *Resolve (HIR::Pattern *pattern);
  66
  67   void visit (HIR::PathInExpression &pattern) override;
  68   void visit (HIR::StructPattern &pattern) override;
  69   void visit (HIR::TupleStructPattern &pattern) override;
  70   void visit (HIR::WildcardPattern &pattern) override;
  71   void visit (HIR::TuplePattern &pattern) override;
  72   void visit (HIR::LiteralPattern &pattern) override;
  73   void visit (HIR::RangePattern &pattern) override;
  74   void visit (HIR::IdentifierPattern &pattern) override;
  75   void visit (HIR::QualifiedPathInExpression &pattern) override;
  76   void visit (HIR::ReferencePattern &pattern) override;
  77   void visit (HIR::SlicePattern &pattern) override;
  78   void visit (HIR::AltPattern &pattern) override;
  79
  80 private:
  81   ClosureParamInfer ();
  82
  83   TyTy::BaseType *infered;
  84 };
  85
  86 } // namespace Resolver
  87 } // namespace Rust
  88
  89 #endif // RUST_HIR_TYPE_CHECK_PATTERN