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// Copyright (C) 2020-2021 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, NodeId parent)
{
ResolvePattern resolver (parent);
pattern->accept_vis (resolver);
if (resolver.resolved_node == UNKNOWN_NODEID)
{
rust_error_at (resolver.locus, "failed to resolve pattern %s",
pattern->as_string ().c_str ());
}
};
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);
resolver->insert_new_definition (pattern.get_node_id (),
Definition{pattern.get_node_id (),
parent});
}
}
private:
ResolvePattern (NodeId parent) : ResolverBase (parent) {}
};
class PatternDeclaration : public ResolverBase
{
using Rust::Resolver::ResolverBase::visit;
public:
static void go (AST::Pattern *pattern, NodeId parent)
{
PatternDeclaration resolver (parent);
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 ());
resolver->insert_new_definition (pattern.get_node_id (),
Definition{pattern.get_node_id (),
parent});
resolver->mark_decl_mutability (pattern.get_node_id (),
pattern.get_is_mut ());
}
private:
PatternDeclaration (NodeId parent) : ResolverBase (parent) {}
};
} // namespace Resolver
} // namespace Rust
#endif // RUST_AST_RESOLVE_PATTERN_H
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