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// Copyright (C) 2020-2024 Free Software Foundation, Inc.
// This file is part of GCC.
// GCC is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3, or (at your option) any later
// version.
// GCC is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
// You should have received a copy of the GNU General Public License
// along with GCC; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
#ifndef RUST_SUBSTITUTION_MAPPER_H
#define RUST_SUBSTITUTION_MAPPER_H
#include "rust-tyty.h"
#include "rust-tyty-visitor.h"
namespace Rust {
namespace Resolver {
class SubstMapper : public TyTy::TyVisitor
{
public:
static TyTy::BaseType *Resolve (TyTy::BaseType *base, location_t locus,
HIR::GenericArgs *generics = nullptr,
const std::vector<TyTy::Region> ®ions
= {});
static TyTy::BaseType *InferSubst (TyTy::BaseType *base, location_t locus);
bool have_generic_args () const;
void visit (TyTy::FnType &type) override;
void visit (TyTy::ADTType &type) override;
void visit (TyTy::PlaceholderType &type) override;
void visit (TyTy::ProjectionType &type) override;
// nothing to do for these
void visit (TyTy::InferType &) override { rust_unreachable (); }
void visit (TyTy::TupleType &) override { rust_unreachable (); }
void visit (TyTy::FnPtr &) override { rust_unreachable (); }
void visit (TyTy::ArrayType &) override { rust_unreachable (); }
void visit (TyTy::SliceType &) override { rust_unreachable (); }
void visit (TyTy::BoolType &) override { rust_unreachable (); }
void visit (TyTy::IntType &) override { rust_unreachable (); }
void visit (TyTy::UintType &) override { rust_unreachable (); }
void visit (TyTy::FloatType &) override { rust_unreachable (); }
void visit (TyTy::USizeType &) override { rust_unreachable (); }
void visit (TyTy::ISizeType &) override { rust_unreachable (); }
void visit (TyTy::ErrorType &) override { rust_unreachable (); }
void visit (TyTy::CharType &) override { rust_unreachable (); }
void visit (TyTy::ReferenceType &) override { rust_unreachable (); }
void visit (TyTy::PointerType &) override { rust_unreachable (); }
void visit (TyTy::ParamType &) override { rust_unreachable (); }
void visit (TyTy::StrType &) override { rust_unreachable (); }
void visit (TyTy::NeverType &) override { rust_unreachable (); }
void visit (TyTy::DynamicObjectType &) override { rust_unreachable (); }
void visit (TyTy::ClosureType &) override { rust_unreachable (); }
private:
SubstMapper (HirId ref, HIR::GenericArgs *generics,
const std::vector<TyTy::Region> ®ions, location_t locus);
TyTy::BaseType *resolved;
HIR::GenericArgs *generics;
const std::vector<TyTy::Region> ®ions;
location_t locus;
};
class SubstMapperInternal : public TyTy::TyVisitor
{
public:
static TyTy::BaseType *Resolve (TyTy::BaseType *base,
TyTy::SubstitutionArgumentMappings &mappings);
static bool mappings_are_bound (TyTy::BaseType *ty,
TyTy::SubstitutionArgumentMappings &mappings);
void visit (TyTy::FnType &type) override;
void visit (TyTy::ADTType &type) override;
void visit (TyTy::TupleType &type) override;
void visit (TyTy::ReferenceType &type) override;
void visit (TyTy::PointerType &type) override;
void visit (TyTy::ParamType &type) override;
void visit (TyTy::PlaceholderType &type) override;
void visit (TyTy::ProjectionType &type) override;
void visit (TyTy::ClosureType &type) override;
void visit (TyTy::ArrayType &type) override;
void visit (TyTy::SliceType &type) override;
void visit (TyTy::InferType &type) override;
void visit (TyTy::FnPtr &type) override;
void visit (TyTy::BoolType &type) override;
void visit (TyTy::IntType &type) override;
void visit (TyTy::UintType &type) override;
void visit (TyTy::FloatType &type) override;
void visit (TyTy::USizeType &type) override;
void visit (TyTy::ISizeType &type) override;
void visit (TyTy::ErrorType &type) override;
void visit (TyTy::CharType &type) override;
void visit (TyTy::StrType &type) override;
void visit (TyTy::NeverType &type) override;
void visit (TyTy::DynamicObjectType &type) override;
private:
SubstMapperInternal (HirId ref, TyTy::SubstitutionArgumentMappings &mappings);
TyTy::BaseType *resolved;
TyTy::SubstitutionArgumentMappings &mappings;
};
class SubstMapperFromExisting : public TyTy::TyVisitor
{
public:
static TyTy::BaseType *Resolve (TyTy::BaseType *concrete,
TyTy::BaseType *receiver);
void visit (TyTy::FnType &type) override;
void visit (TyTy::ADTType &type) override;
void visit (TyTy::ClosureType &type) override;
void visit (TyTy::InferType &) override { rust_unreachable (); }
void visit (TyTy::TupleType &) override { rust_unreachable (); }
void visit (TyTy::FnPtr &) override { rust_unreachable (); }
void visit (TyTy::ArrayType &) override { rust_unreachable (); }
void visit (TyTy::SliceType &) override { rust_unreachable (); }
void visit (TyTy::BoolType &) override { rust_unreachable (); }
void visit (TyTy::IntType &) override { rust_unreachable (); }
void visit (TyTy::UintType &) override { rust_unreachable (); }
void visit (TyTy::FloatType &) override { rust_unreachable (); }
void visit (TyTy::USizeType &) override { rust_unreachable (); }
void visit (TyTy::ISizeType &) override { rust_unreachable (); }
void visit (TyTy::ErrorType &) override { rust_unreachable (); }
void visit (TyTy::CharType &) override { rust_unreachable (); }
void visit (TyTy::ReferenceType &) override { rust_unreachable (); }
void visit (TyTy::PointerType &) override { rust_unreachable (); }
void visit (TyTy::ParamType &) override { rust_unreachable (); }
void visit (TyTy::StrType &) override { rust_unreachable (); }
void visit (TyTy::NeverType &) override { rust_unreachable (); }
void visit (TyTy::PlaceholderType &) override { rust_unreachable (); }
void visit (TyTy::ProjectionType &) override { rust_unreachable (); }
void visit (TyTy::DynamicObjectType &) override { rust_unreachable (); }
private:
SubstMapperFromExisting (TyTy::BaseType *concrete, TyTy::BaseType *receiver);
TyTy::BaseType *concrete;
TyTy::BaseType *receiver;
TyTy::BaseType *resolved;
};
class GetUsedSubstArgs : public TyTy::TyConstVisitor
{
public:
static TyTy::SubstitutionArgumentMappings From (const TyTy::BaseType *from);
void visit (const TyTy::FnType &type) override;
void visit (const TyTy::ADTType &type) override;
void visit (const TyTy::ClosureType &type) override;
void visit (const TyTy::InferType &) override {}
void visit (const TyTy::TupleType &) override {}
void visit (const TyTy::FnPtr &) override {}
void visit (const TyTy::ArrayType &) override {}
void visit (const TyTy::SliceType &) override {}
void visit (const TyTy::BoolType &) override {}
void visit (const TyTy::IntType &) override {}
void visit (const TyTy::UintType &) override {}
void visit (const TyTy::FloatType &) override {}
void visit (const TyTy::USizeType &) override {}
void visit (const TyTy::ISizeType &) override {}
void visit (const TyTy::ErrorType &) override {}
void visit (const TyTy::CharType &) override {}
void visit (const TyTy::ReferenceType &) override {}
void visit (const TyTy::PointerType &) override {}
void visit (const TyTy::ParamType &) override {}
void visit (const TyTy::StrType &) override {}
void visit (const TyTy::NeverType &) override {}
void visit (const TyTy::PlaceholderType &) override {}
void visit (const TyTy::ProjectionType &) override {}
void visit (const TyTy::DynamicObjectType &) override {}
private:
GetUsedSubstArgs ();
TyTy::SubstitutionArgumentMappings args;
};
} // namespace Resolver
} // namespace Rust
#endif // RUST_SUBSTITUTION_MAPPER_H
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