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// Copyright (C) 2020-2023 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_AST_RESOLVE_PATTERN_H
#define RUST_AST_RESOLVE_PATTERN_H
#include "rust-ast-resolve-base.h"
#include "rust-ast-full.h"
namespace Rust {
namespace Resolver {
class ResolvePattern : public ResolverBase
{
using Rust::Resolver::ResolverBase::visit;
public:
static void go (AST::Pattern *pattern)
{
ResolvePattern resolver;
pattern->accept_vis (resolver);
}
void visit (AST::IdentifierPattern &pattern) override
{
if (resolver->get_name_scope ().lookup (
CanonicalPath::new_seg (pattern.get_node_id (), pattern.get_ident ()),
&resolved_node))
{
resolver->insert_resolved_name (pattern.get_node_id (), resolved_node);
}
}
private:
ResolvePattern () : ResolverBase () {}
};
class PatternDeclaration : public ResolverBase
{
using Rust::Resolver::ResolverBase::visit;
public:
static void go (AST::Pattern *pattern, Rib::ItemType type)
{
PatternDeclaration resolver (type);
pattern->accept_vis (resolver);
};
void visit (AST::IdentifierPattern &pattern) override
{
// if we have a duplicate id this then allows for shadowing correctly
// as new refs to this decl will match back here so it is ok to overwrite
resolver->get_name_scope ().insert (
CanonicalPath::new_seg (pattern.get_node_id (), pattern.get_ident ()),
pattern.get_node_id (), pattern.get_locus (), type);
}
void visit (AST::GroupedPattern &pattern) override
{
pattern.get_pattern_in_parens ()->accept_vis (*this);
}
// cases in a match expression
void visit (AST::PathInExpression &pattern) override;
void visit (AST::StructPattern &pattern) override;
void visit (AST::TupleStructPattern &pattern) override;
void visit (AST::TuplePattern &pattern) override;
void visit (AST::RangePattern &pattern) override;
private:
PatternDeclaration (Rib::ItemType type) : ResolverBase (), type (type) {}
Rib::ItemType type;
};
} // namespace Resolver
} // namespace Rust
#endif // RUST_AST_RESOLVE_PATTERN_H
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