/* Elisp native compiler definitions
Copyright (C) 2019-2020 Free Software Foundation, Inc.

This file is part of GNU Emacs.

GNU Emacs 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 of the License, or
(at your option) any later version.

GNU Emacs 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 GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.  */

#ifndef COMP_H
#define COMP_H

/* To keep ifdefs under control.  */
enum {
  NATIVE_COMP_FLAG =
#ifdef HAVE_NATIVE_COMP
  1
#else
  0
#endif
};

#include <dynlib.h>

struct Lisp_Native_Comp_Unit
{
  union vectorlike_header header;
  /* Original eln file loaded. */
  Lisp_Object file;
  Lisp_Object optimize_qualities;
  /* Analogous to the constant vector but per compilation unit.  */
  Lisp_Object data_vec;
  /* Same but for data that cannot be moved to pure space.
     Must be the last lisp object here.   */
  Lisp_Object data_impure_vec;
  dynlib_handle_ptr handle;
};

#ifdef HAVE_NATIVE_COMP

INLINE bool
NATIVE_COMP_UNITP (Lisp_Object a)
{
  return PSEUDOVECTORP (a, PVEC_NATIVE_COMP_UNIT);
}

INLINE struct Lisp_Native_Comp_Unit *
XNATIVE_COMP_UNIT (Lisp_Object a)
{
  eassert (NATIVE_COMP_UNITP (a));
  return XUNTAG (a, Lisp_Vectorlike, struct Lisp_Native_Comp_Unit);
}

/* Defined in comp.c.  */

extern void hash_native_abi (void);

void load_comp_unit (struct Lisp_Native_Comp_Unit *comp_u, bool loading_dump,
		     bool late_load);
extern void syms_of_comp (void);

extern void maybe_defer_native_compilation (Lisp_Object function_name,
					    Lisp_Object definition);
#else

static inline void
maybe_defer_native_compilation (Lisp_Object function_name,
				Lisp_Object definition)
{}

#endif

#endif