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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_AST_LOWER_EXTERN_ITEM
#define RUST_AST_LOWER_EXTERN_ITEM
#include "rust-ast-lower-base.h"
#include "rust-ast-lower-type.h"
#include "rust-ast-lower.h"
#include "rust-hir-full-decls.h"
namespace Rust {
namespace HIR {
class ASTLoweringExternItem : public ASTLoweringBase
{
using Rust::HIR::ASTLoweringBase::visit;
public:
static HIR::ExternalItem *translate (AST::ExternalItem *item,
HirId parent_hirid)
{
ASTLoweringExternItem resolver;
item->accept_vis (resolver);
rust_assert (resolver.translated != nullptr);
resolver.mappings->insert_hir_extern_item (resolver.translated,
parent_hirid);
resolver.mappings->insert_location (
resolver.translated->get_mappings ().get_hirid (),
resolver.translated->get_locus ());
return resolver.translated;
}
void visit (AST::ExternalStaticItem &item) override
{
HIR::Visibility vis = translate_visibility (item.get_visibility ());
HIR::Type *static_type = ASTLoweringType::translate (item.get_type ());
auto crate_num = mappings->get_current_crate ();
Analysis::NodeMapping mapping (crate_num, item.get_node_id (),
mappings->get_next_hir_id (crate_num),
mappings->get_next_localdef_id (crate_num));
translated = new HIR::ExternalStaticItem (
mapping, item.get_identifier (), std::unique_ptr<HIR::Type> (static_type),
item.is_mut () ? Mutability::Mut : Mutability::Imm, std::move (vis),
item.get_outer_attrs (), item.get_locus ());
}
void visit (AST::Function &function) override
{
std::vector<std::unique_ptr<HIR::WhereClauseItem> > where_clause_items;
HIR::WhereClause where_clause (std::move (where_clause_items));
HIR::Visibility vis = translate_visibility (function.get_visibility ());
std::vector<std::unique_ptr<HIR::GenericParam> > generic_params;
if (function.has_generics ())
generic_params = lower_generic_params (function.get_generic_params ());
HIR::Type *return_type
= function.has_return_type ()
? ASTLoweringType::translate (function.get_return_type ())
: nullptr;
bool is_variadic = function.is_variadic ();
auto begin = function.get_function_params ().begin ();
auto end = is_variadic ? function.get_function_params ().end () - 1
: function.get_function_params ().end ();
std::vector<HIR::NamedFunctionParam> function_params;
for (auto it = begin; it != end; it++)
{
auto ¶m = static_cast<AST::FunctionParam &> (**it);
if (param.is_variadic () || param.is_self ())
continue;
auto param_kind = param.get_pattern ().get_pattern_kind ();
rust_assert (param_kind == AST::Pattern::Kind::Identifier
|| param_kind == AST::Pattern::Kind::Wildcard);
auto ¶m_ident
= static_cast<AST::IdentifierPattern &> (param.get_pattern ());
Identifier param_name = param_kind == AST::Pattern::Kind::Identifier
? param_ident.get_ident ()
: std::string ("_");
HIR::Type *param_type = ASTLoweringType::translate (param.get_type ());
auto crate_num = mappings->get_current_crate ();
Analysis::NodeMapping mapping (crate_num, param.get_node_id (),
mappings->get_next_hir_id (crate_num),
mappings->get_next_localdef_id (
crate_num));
function_params.push_back (
HIR::NamedFunctionParam (mapping, param_name,
std::unique_ptr<HIR::Type> (param_type)));
}
auto crate_num = mappings->get_current_crate ();
Analysis::NodeMapping mapping (crate_num, function.get_node_id (),
mappings->get_next_hir_id (crate_num),
mappings->get_next_localdef_id (crate_num));
translated = new HIR::ExternalFunctionItem (
mapping, function.get_function_name (), std::move (generic_params),
std::unique_ptr<HIR::Type> (return_type), std::move (where_clause),
std::move (function_params), is_variadic, std::move (vis),
function.get_outer_attrs (), function.get_locus ());
}
void visit (AST::ExternalTypeItem &type) override
{
auto crate_num = mappings->get_current_crate ();
Analysis::NodeMapping mapping (crate_num, type.get_node_id (),
mappings->get_next_hir_id (crate_num),
mappings->get_next_localdef_id (crate_num));
HIR::Visibility vis = translate_visibility (type.get_visibility ());
translated = new HIR::ExternalTypeItem (mapping, type.get_identifier (),
vis, type.get_locus ());
}
private:
ASTLoweringExternItem () : translated (nullptr) {}
HIR::ExternalItem *translated;
};
} // namespace HIR
} // namespace Rust
#endif // RUST_AST_LOWER_ITEM
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