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bee1255541
Add a callback registration function into the proc macro library so the compiler can register it's own lexing/parsing functions on load. gcc/rust/ChangeLog: * expand/rust-proc-macro.cc (tokenstream_from_string): Add a function that creates a tokenstream from a given string. (load_macros_array): Add call to registration function. libgrust/ChangeLog: * libproc_macro/proc_macro.cc (proc_macro_register_from_str): Add registration function. * libproc_macro/proc_macro.h (proc_macro_register_from_str): Add registration function prototype. * libproc_macro/tokenstream.cc (TokenStream::make_tokenstream): Add a new constructor from a string that uses the registered callback. (TokenStream__from_string): Add call to new constructor. * libproc_macro/tokenstream.h: Add registration declaration. * libproc_macro/registration.h: New file. Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
// Copyright (C) 2023 Free Software Foundation, Inc.
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//
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// This file is part of the GNU Proc Macro Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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#include "proc_macro.h"
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namespace ProcMacro {
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Procmacro
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Procmacro::make_derive (const char *trait_name, const char **attributes,
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std::uint64_t size, CustomDeriveMacro macro)
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{
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ProcmacroPayload payload;
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payload.custom_derive = {trait_name, attributes, size, macro};
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return {CUSTOM_DERIVE, payload};
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}
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Procmacro
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Procmacro::make_attribute (const char *name, AttributeMacro macro)
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{
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ProcmacroPayload payload;
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payload.attribute = {name, macro};
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return {ATTR, payload};
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}
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Procmacro
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Procmacro::make_bang (const char *name, BangMacro macro)
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{
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ProcmacroPayload payload;
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payload.bang = {name, macro};
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return {BANG, payload};
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}
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} // namespace ProcMacro
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ProcMacro::from_str_function_t __gccrs_pm_callback_from_str_fn = nullptr;
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