/* Decomposed printf argument list.
   Copyright (C) 1999, 2002-2003, 2006-2007, 2011-2018 Free Software
   Foundation, Inc.

   This program is free software: you can redistribute it and/or
   modify it under the terms of either:

     * the GNU Lesser General Public License as published by the Free
       Software Foundation; either version 3 of the License, or (at your
       option) any later version.

   or

     * the GNU General Public License as published by the Free
       Software Foundation; either version 2 of the License, or (at your
       option) any later version.

   or both in parallel, as here.
   This program 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 this program; if not, see <https://www.gnu.org/licenses/>.  */

#ifndef _PRINTF_ARGS_H
#define _PRINTF_ARGS_H

/* This file can be parametrized with the following macros:
     ENABLE_UNISTDIO    Set to 1 to enable the unistdio extensions.
     PRINTF_FETCHARGS   Name of the function to be declared.
     STATIC             Set to 'static' to declare the function static.  */

/* Default parameters.  */
#ifndef PRINTF_FETCHARGS
# define PRINTF_FETCHARGS printf_fetchargs
#endif

/* Get size_t.  */
#include <stddef.h>

/* Get wchar_t.  */
#if HAVE_WCHAR_T
# include <stddef.h>
#endif

/* Get wint_t.  */
#if HAVE_WINT_T
# include <wchar.h>
#endif

/* Get va_list.  */
#include <stdarg.h>


/* Argument types */
typedef enum
{
  TYPE_NONE,
  TYPE_SCHAR,
  TYPE_UCHAR,
  TYPE_SHORT,
  TYPE_USHORT,
  TYPE_INT,
  TYPE_UINT,
  TYPE_LONGINT,
  TYPE_ULONGINT,
#if HAVE_LONG_LONG_INT
  TYPE_LONGLONGINT,
  TYPE_ULONGLONGINT,
#endif
  TYPE_DOUBLE,
  TYPE_LONGDOUBLE,
  TYPE_CHAR,
#if HAVE_WINT_T
  TYPE_WIDE_CHAR,
#endif
  TYPE_STRING,
#if HAVE_WCHAR_T
  TYPE_WIDE_STRING,
#endif
  TYPE_POINTER,
  TYPE_COUNT_SCHAR_POINTER,
  TYPE_COUNT_SHORT_POINTER,
  TYPE_COUNT_INT_POINTER,
  TYPE_COUNT_LONGINT_POINTER
#if HAVE_LONG_LONG_INT
, TYPE_COUNT_LONGLONGINT_POINTER
#endif
#if ENABLE_UNISTDIO
  /* The unistdio extensions.  */
, TYPE_U8_STRING
, TYPE_U16_STRING
, TYPE_U32_STRING
#endif
} arg_type;

/* Polymorphic argument */
typedef struct
{
  arg_type type;
  union
  {
    signed char                 a_schar;
    unsigned char               a_uchar;
    short                       a_short;
    unsigned short              a_ushort;
    int                         a_int;
    unsigned int                a_uint;
    long int                    a_longint;
    unsigned long int           a_ulongint;
#if HAVE_LONG_LONG_INT
    long long int               a_longlongint;
    unsigned long long int      a_ulonglongint;
#endif
    float                       a_float;
    double                      a_double;
    long double                 a_longdouble;
    int                         a_char;
#if HAVE_WINT_T
    wint_t                      a_wide_char;
#endif
    const char*                 a_string;
#if HAVE_WCHAR_T
    const wchar_t*              a_wide_string;
#endif
    void*                       a_pointer;
    signed char *               a_count_schar_pointer;
    short *                     a_count_short_pointer;
    int *                       a_count_int_pointer;
    long int *                  a_count_longint_pointer;
#if HAVE_LONG_LONG_INT
    long long int *             a_count_longlongint_pointer;
#endif
#if ENABLE_UNISTDIO
    /* The unistdio extensions.  */
    const uint8_t *             a_u8_string;
    const uint16_t *            a_u16_string;
    const uint32_t *            a_u32_string;
#endif
  }
  a;
}
argument;

/* Number of directly allocated arguments (no malloc() needed).  */
#define N_DIRECT_ALLOC_ARGUMENTS 7

typedef struct
{
  size_t count;
  argument *arg;
  argument direct_alloc_arg[N_DIRECT_ALLOC_ARGUMENTS];
}
arguments;


/* Fetch the arguments, putting them into a. */
#ifdef STATIC
STATIC
#else
extern
#endif
int PRINTF_FETCHARGS (va_list args, arguments *a);

#endif /* _PRINTF_ARGS_H */
