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// Copyright (C) 2020-2025 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_TOPLEVEL_NAME_RESOLVER_2_0_H
#define RUST_TOPLEVEL_NAME_RESOLVER_2_0_H
#include "rust-ast-visitor.h"
#include "rust-name-resolution-context.h"
#include "rust-default-resolver.h"
namespace Rust {
namespace Resolver2_0 {
class GlobbingVisitor : public AST::DefaultASTVisitor
{
using AST::DefaultASTVisitor::visit;
public:
GlobbingVisitor (NameResolutionContext &ctx) : ctx (ctx) {}
void go (AST::Module *module);
void visit (AST::Module &module) override;
void visit (AST::MacroRulesDefinition ¯o) override;
void visit (AST::Function &function) override;
void visit (AST::StaticItem &static_item) override;
void visit (AST::StructStruct &struct_item) override;
void visit (AST::TupleStruct &tuple_struct) override;
void visit (AST::Enum &enum_item) override;
void visit (AST::Union &union_item) override;
void visit (AST::ConstantItem &const_item) override;
void visit (AST::ExternCrate &crate) override;
void visit (AST::UseDeclaration &use) override;
private:
NameResolutionContext &ctx;
};
/**
* The `TopLevel` visitor takes care of collecting all the definitions in a
* crate, and inserting them into the proper namespaces. These definitions can
* then be accessed by subsequent resolvers, such as `Early` or `Late`.
*/
class TopLevel : public DefaultResolver
{
using DefaultResolver::visit;
public:
TopLevel (NameResolutionContext &resolver);
void go (AST::Crate &crate);
private:
/**
* Insert a new definition or error out if a definition with the same name was
* already present in the same namespace in the same scope.
*
* @param identifier The identifier of the definition to add.
* @param node A reference to the node, so we can get its `NodeId` and
* location.
* @param ns The namespace in which to add the definition.
*/
template <typename T>
void insert_or_error_out (const Identifier &identifier, const T &node,
Namespace ns);
void insert_or_error_out (const Identifier &identifier,
const location_t &locus, const NodeId &id,
Namespace ns);
// FIXME: Do we move these to our mappings?
std::unordered_map<NodeId, location_t> node_locations;
// Store node forwarding for use declaration, the link between a
// "new" local name and its definition.
std::unordered_map<NodeId, NodeId> node_forwarding;
void visit (AST::Module &module) override;
void visit (AST::Trait &trait) override;
void visit (AST::MacroRulesDefinition ¯o) override;
void visit (AST::Function &function) override;
void visit (AST::BlockExpr &expr) override;
void visit (AST::StaticItem &static_item) override;
void visit (AST::StructStruct &struct_item) override;
void visit (AST::TupleStruct &tuple_struct) override;
void visit (AST::EnumItem &variant) override;
void visit (AST::EnumItemTuple &variant) override;
void visit (AST::EnumItemStruct &variant) override;
void visit (AST::EnumItemDiscriminant &variant) override;
void visit (AST::Enum &enum_item) override;
void visit (AST::Union &union_item) override;
void visit (AST::ConstantItem &const_item) override;
void visit (AST::ExternCrate &crate) override;
// FIXME: Documentation
// Call this on all the paths of a UseDec - so each flattened path in a
// UseTreeList for example
// FIXME: Should that return `found`?
bool handle_use_dec (AST::SimplePath &path);
bool handle_use_glob (AST::SimplePath &glob);
bool handle_rebind (std::pair<AST::SimplePath, AST::UseTreeRebind> &pair);
void visit (AST::UseDeclaration &use) override;
};
} // namespace Resolver2_0
} // namespace Rust
#endif // !RUST_TOPLEVEL_NAME_RESOLVER_2_0_H
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