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// Copyright (C) 2023-2024 Free Software Foundation, Inc.
//
// This file is part of the GNU Proc Macro Library. This library 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.
// This library 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.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
#ifndef PROC_MACRO_H
#define PROC_MACRO_H
#include <cstdint>
#include "literal.h"
#include "tokenstream.h"
#include "tokentree.h"
#include "group.h"
#include "punct.h"
#include "ident.h"
#include "registration.h"
namespace ProcMacro {
extern "C" {
using CustomDeriveMacro = TokenStream (*) (TokenStream);
using AttributeMacro = TokenStream (*) (TokenStream, TokenStream);
using BangMacro = TokenStream (*) (TokenStream);
struct CustomDerive
{
// TODO: UTF-8 function name
const char *trait_name;
// TODO: UTF-8 attributes
const char **attributes;
std::uint64_t attr_size;
CustomDeriveMacro macro;
};
struct Attribute
{
// TODO: UTF-8 function name
const char *name;
AttributeMacro macro;
};
struct Bang
{
const char *name;
BangMacro macro;
};
}
enum ProcmacroTag
{
CUSTOM_DERIVE = 0,
ATTR,
BANG,
};
union ProcmacroPayload
{
CustomDerive custom_derive;
Attribute attribute;
Bang bang;
};
struct Procmacro
{
ProcmacroTag tag;
ProcmacroPayload payload;
public:
Procmacro make_derive (const char *trait_name, const char **attribute,
std::uint64_t size, CustomDeriveMacro macro);
Procmacro make_attribute (const char *name, AttributeMacro macro);
Procmacro make_bang (const char *name, BangMacro macro);
};
struct ProcmacroArray
{
std::uint64_t length;
Procmacro *macros;
};
extern "C" bool
bridge_is_available ();
} // namespace ProcMacro
#endif /* ! PROC_MACRO_H */
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