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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/>.
#include "rust-system.h"
#include "rust-operators.h"
#include "optional.h"
#include "bi-map.h"
namespace Rust {
class LangItem
{
public:
// FIXME: We should clean up that enum to make it more inline with the list of
// lang-items in Rust 1.49
// https://github.com/rust-lang/rust/blob/1.49.0/compiler/rustc_hir/src/lang_items.rs
enum class Kind
{
// https://github.com/rust-lang/rust/blob/master/library/core/src/ops/arith.rs
ADD,
SUBTRACT,
MULTIPLY,
DIVIDE,
REMAINDER,
BITAND,
BITOR,
BITXOR,
SHL,
SHR,
NEGATION,
NOT,
EQ,
PARTIAL_ORD,
ADD_ASSIGN,
SUB_ASSIGN,
MUL_ASSIGN,
DIV_ASSIGN,
REM_ASSIGN,
BITAND_ASSIGN,
BITOR_ASSIGN,
BITXOR_ASSIGN,
SHL_ASSIGN,
SHR_ASSIGN,
DEREF,
DEREF_MUT,
// https://github.com/rust-lang/rust/blob/master/library/core/src/ops/index.rs
INDEX,
INDEX_MUT,
// https://github.com/rust-lang/rust/blob/master/library/core/src/ops/range.rs
RANGE_FULL,
RANGE,
RANGE_FROM,
RANGE_TO,
RANGE_INCLUSIVE,
RANGE_TO_INCLUSIVE,
// https://github.com/rust-lang/rust/blob/master/library/core/src/marker.rs
PHANTOM_DATA,
// functions
FN,
FN_MUT,
FN_ONCE,
FN_ONCE_OUTPUT,
// markers
COPY,
CLONE,
SIZED,
SYNC,
// https://github.com/Rust-GCC/gccrs/issues/1896
// https://github.com/rust-lang/rust/commit/afbecc0f68c4dcfc4878ba5bcb1ac942544a1bdc
// https://github.com/Rust-GCC/gccrs/issues/1494
// https://github.com/rust-lang/rust/blob/master/library/core/src/ptr/const_ptr.rs
SLICE_ALLOC,
SLICE_U8_ALLOC,
STR_ALLOC,
ARRAY,
BOOL,
CHAR,
F32,
F64,
I8,
I16,
I32,
I64,
I128,
ISIZE,
U8,
U16,
U32,
U64,
U128,
USIZE,
CONST_PTR,
CONST_SLICE_PTR,
MUT_PTR,
MUT_SLICE_PTR,
SLICE_U8,
SLICE,
STR,
F32_RUNTIME,
F64_RUNTIME,
OPTION_SOME,
OPTION_NONE,
INTOITER_INTOITER,
ITERATOR_NEXT,
};
static const BiMap<std::string, Kind> lang_items;
static tl::optional<Kind> Parse (const std::string &item);
static std::string ToString (Kind type);
static std::string PrettyString (Kind type);
static Kind OperatorToLangItem (ArithmeticOrLogicalOperator op);
static Kind
CompoundAssignmentOperatorToLangItem (ArithmeticOrLogicalOperator op);
static Kind NegationOperatorToLangItem (NegationOperator op);
static Kind ComparisonToLangItem (ComparisonOperator op);
static std::string ComparisonToSegment (ComparisonOperator op);
};
} // namespace Rust
// GCC 4.8 needs us to manually implement hashing for enum classes
namespace std {
template <> struct hash<Rust::LangItem::Kind>
{
size_t operator() (const Rust::LangItem::Kind &lang_item) const noexcept
{
return hash<std::underlying_type<Rust::LangItem::Kind>::type> () (
static_cast<std::underlying_type<Rust::LangItem::Kind>::type> (
lang_item));
}
};
} // namespace std
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