(nullable_compute): Do not subtract from the returned value of malloc.

[bison.git] / src / muscle_tab.h

/* Muscle table manager for Bison,
   Copyright (C) 2001, 2002 Free Software Foundation, Inc.

   This file is part of Bison, the GNU Compiler Compiler.

   Bison 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 2, or (at your option)
   any later version.

   Bison 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 Bison; see the file COPYING.  If not, write to
   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#ifndef MUSCLE_TAB_H_
# define MUSCLE_TAB_H_

void muscle_init (void);
void muscle_insert (const char *key, char *value);
char *muscle_find (const char *key);
void muscle_free (void);


/* An obstack dedicated to receive muscle keys and values.  */
extern struct obstack muscle_obstack;

#define MUSCLE_INSERT_INT(Key, Value)				\
{								\
  obstack_fgrow1 (&muscle_obstack, "%d", Value);	       	\
  obstack_1grow (&muscle_obstack, 0);				\
  muscle_insert (Key, obstack_finish (&muscle_obstack));	\
}

#define MUSCLE_INSERT_LONG_INT(Key, Value)			\
{								\
  obstack_fgrow1 (&muscle_obstack, "%ld", Value);	       	\
  obstack_1grow (&muscle_obstack, 0);				\
  muscle_insert (Key, obstack_finish (&muscle_obstack));	\
}

#define MUSCLE_INSERT_STRING(Key, Value)			\
{								\
  obstack_sgrow (&muscle_obstack, Value);			\
  obstack_1grow (&muscle_obstack, 0);				\
  muscle_insert (Key, obstack_finish (&muscle_obstack));	\
}

#define MUSCLE_OBSTACK_SGROW(Obstack, Value)			\
{								\
  char const *s;						\
  for (s = Value; *s; s++)					\
    switch (*s)							\
      {								\
      case '$':	obstack_sgrow (Obstack, "$]["); break;		\
      case '@':	obstack_sgrow (Obstack, "@@" ); break;		\
      case '[':	obstack_sgrow (Obstack, "@{" ); break;		\
      case ']':	obstack_sgrow (Obstack, "@}" ); break;		\
      default: obstack_1grow (Obstack, *s); break;		\
      }								\
}

#define MUSCLE_INSERT_C_STRING(Key, Value)			\
{								\
  MUSCLE_OBSTACK_SGROW (&muscle_obstack,			\
			quotearg_style (c_quoting_style,	\
					Value));		\
  obstack_1grow (&muscle_obstack, 0);				\
  muscle_insert (Key, obstack_finish (&muscle_obstack));	\
}

/* Insert (KEY, VALUE).  If KEY already existed, overwrite the
   previous value.  Uses MUSCLE_OBSTACK.  De-allocates the previously
   associated value.  VALUE and SEPARATOR are copied.  */

void muscle_grow (const char *key, const char *value, const char *separator);

/* MUSCLE is an M4 list of pairs.  Create or extend it with the pair
   (A1, A2).  Note that because the muscle values are output *double*
   quoted, one needs to strip the first level of quotes to reach the
   list itself.  */

void muscle_pair_list_grow (const char *muscle,
			    const char *a1, const char *a2);

void muscles_m4_output (FILE *out);

#endif /* not MUSCLE_TAB_H_ */