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// Copyright (C) 2020 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_TOPLEVEL_H
#define RUST_AST_RESOLVE_TOPLEVEL_H
#include "rust-ast-resolve-base.h"
#include "rust-ast-resolve-type.h"
#include "rust-ast-resolve-implitem.h"
#include "rust-ast-full.h"
namespace Rust {
namespace Resolver {
class ResolveTopLevel : public ResolverBase
{
using Rust::Resolver::ResolverBase::visit;
public:
static void go (AST::Item *item,
const CanonicalPath &prefix = CanonicalPath::create_empty ())
{
ResolveTopLevel resolver (prefix);
item->accept_vis (resolver);
};
void visit (AST::TypeAlias &alias) override
{
resolver->get_type_scope ().insert (
CanonicalPath (alias.get_new_type_name ()), alias.get_node_id (),
alias.get_locus (), false,
[&] (const CanonicalPath &, NodeId, Location locus) -> void {
RichLocation r (alias.get_locus ());
r.add_range (locus);
rust_error_at (r, "redefined multiple times");
});
}
void visit (AST::TupleStruct &struct_decl) override
{
resolver->get_type_scope ().insert (
CanonicalPath (struct_decl.get_identifier ()), struct_decl.get_node_id (),
struct_decl.get_locus (), false,
[&] (const CanonicalPath &, NodeId, Location locus) -> void {
RichLocation r (struct_decl.get_locus ());
r.add_range (locus);
rust_error_at (r, "redefined multiple times");
});
}
void visit (AST::StructStruct &struct_decl) override
{
resolver->get_type_scope ().insert (
CanonicalPath (struct_decl.get_identifier ()), struct_decl.get_node_id (),
struct_decl.get_locus (), false,
[&] (const CanonicalPath &, NodeId, Location locus) -> void {
RichLocation r (struct_decl.get_locus ());
r.add_range (locus);
rust_error_at (r, "redefined multiple times");
});
}
void visit (AST::StaticItem &var) override
{
resolver->get_name_scope ().insert (
CanonicalPath (var.get_identifier ()), var.get_node_id (),
var.get_locus (), false,
[&] (const CanonicalPath &, NodeId, Location locus) -> void {
RichLocation r (var.get_locus ());
r.add_range (locus);
rust_error_at (r, "redefined multiple times");
});
resolver->insert_new_definition (var.get_node_id (),
Definition{var.get_node_id (),
var.get_node_id ()});
resolver->mark_decl_mutability (var.get_node_id (), var.is_mutable ());
}
void visit (AST::ConstantItem &constant) override
{
auto path
= prefix.append (ResolveConstantItemToCanonicalPath::resolve (constant));
resolver->get_name_scope ().insert (
path, constant.get_node_id (), constant.get_locus (), false,
[&] (const CanonicalPath &, NodeId, Location locus) -> void {
RichLocation r (constant.get_locus ());
r.add_range (locus);
rust_error_at (r, "redefined multiple times");
});
resolver->insert_new_definition (constant.get_node_id (),
Definition{constant.get_node_id (),
constant.get_node_id ()});
}
void visit (AST::Function &function) override
{
auto path
= prefix.append (ResolveFunctionItemToCanonicalPath::resolve (function));
resolver->get_name_scope ().insert (
path, function.get_node_id (), function.get_locus (), false,
[&] (const CanonicalPath &, NodeId, Location locus) -> void {
RichLocation r (function.get_locus ());
r.add_range (locus);
rust_error_at (r, "redefined multiple times");
});
resolver->insert_new_definition (function.get_node_id (),
Definition{function.get_node_id (),
function.get_node_id ()});
// if this does not get a reference it will be determined to be unused
// lets give it a fake reference to itself
if (function.get_function_name ().compare ("main") == 0)
{
resolver->insert_resolved_name (function.get_node_id (),
function.get_node_id ());
}
}
void visit (AST::InherentImpl &impl_block) override
{
bool canonicalize_type_args = !impl_block.has_generics ();
bool type_resolve_generic_args = false;
CanonicalPath impl_type
= ResolveTypeToCanonicalPath::resolve (*impl_block.get_type ().get (),
canonicalize_type_args,
type_resolve_generic_args);
CanonicalPath impl_prefix = prefix.append (impl_type);
for (auto &impl_item : impl_block.get_impl_items ())
ResolveToplevelImplItem::go (impl_item.get (), impl_prefix);
}
void visit (AST::TraitImpl &impl_block) override
{
bool canonicalize_type_args = !impl_block.has_generics ();
bool type_resolve_generic_args = false;
CanonicalPath impl_type
= ResolveTypeToCanonicalPath::resolve (*impl_block.get_type ().get (),
canonicalize_type_args,
type_resolve_generic_args);
CanonicalPath impl_prefix = prefix.append (impl_type);
for (auto &impl_item : impl_block.get_impl_items ())
ResolveToplevelImplItem::go (impl_item.get (), impl_prefix);
}
void visit (AST::Trait &trait) override
{
CanonicalPath path
= prefix.append (CanonicalPath (trait.get_identifier ()));
resolver->get_type_scope ().insert (
path, trait.get_node_id (), trait.get_locus (), false,
[&] (const CanonicalPath &, NodeId, Location locus) -> void {
RichLocation r (trait.get_locus ());
r.add_range (locus);
rust_error_at (r, "redefined multiple times");
});
for (auto &item : trait.get_trait_items ())
ResolveTopLevelTraitItems::go (item.get ());
}
private:
ResolveTopLevel (const CanonicalPath &prefix)
: ResolverBase (UNKNOWN_NODEID), prefix (prefix)
{}
const CanonicalPath &prefix;
};
} // namespace Resolver
} // namespace Rust
#endif // RUST_AST_RESOLVE_TOPLEVEL_H
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