src/muscle-tab.h

/* Muscle table manager for Bison,

   Copyright (C) 2001-2003, 2006-2010 Free Software Foundation, Inc.

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

   This program 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.

   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 <http://www.gnu.org/licenses/>.  */

#ifndef MUSCLE_TAB_H_
# define MUSCLE_TAB_H_

# include "location.h"

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


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

#define MUSCLE_INSERT_BOOL(Key, Value)				\
do {								\
  int v__ = Value;						\
  MUSCLE_INSERT_INT (Key, v__);					\
} while(0)

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

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

/* Key -> Value, but don't apply escaping to Value. */
#define MUSCLE_INSERT_STRING_RAW(Key, Value)			\
do {								\
  obstack_sgrow (&muscle_obstack, Value);			\
  obstack_1grow (&muscle_obstack, 0);				\
  muscle_insert (Key, obstack_finish (&muscle_obstack));	\
} while(0)

/* Key -> Value, applying M4 escaping to Value. */
#define MUSCLE_INSERT_STRING(Key, Value)			\
do {								\
  MUSCLE_OBSTACK_SGROW (&muscle_obstack, Value);                \
  obstack_1grow (&muscle_obstack, 0);				\
  muscle_insert (Key, obstack_finish (&muscle_obstack));	\
} while(0)

#define MUSCLE_OBSTACK_SGROW(Obstack, Value)            \
do {                                                    \
  char const *p__;                                      \
  for (p__ = Value; *p__; p__++)                        \
    switch (*p__)                                       \
      {                                                 \
      case '$':	obstack_sgrow (Obstack, "$]["); break;  \
      case '@':	obstack_sgrow (Obstack, "@@" ); break;  \
      case '[':	obstack_sgrow (Obstack, "@{" ); break;  \
      case ']':	obstack_sgrow (Obstack, "@}" ); break;  \
      default: obstack_1grow (Obstack, *p__); break;    \
      }                                                 \
} while(0)

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

/* Append VALUE to the current value of KEY.  If KEY did not already
   exist, create it.  Use MUSCLE_OBSTACK.  De-allocate the previously
   associated value.  Copy VALUE and SEPARATOR.  */

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


/* Append VALUE to the current value of KEY, using muscle_grow.  But
   in addition, issue a synchronization line for the location LOC.  */

void muscle_code_grow (const char *key, const char *value, location loc);


/* MUSCLE is an M4 list of pairs.  Create or extend it with the pair
   (A1, A2) after escaping both values with digraphs.  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);

/* In the format `[[file_name:line.column]], [[file_name:line.column]]', append
   LOC to MUSCLE.  Use digraphs for special characters in each file name.  */
void muscle_location_grow (char const *key, location loc);

/* In the format `file_name:line.column', append BOUND to MUSCLE.  Use digraphs
   for special characters in the file name.  */
void muscle_boundary_grow (char const *key, boundary bound);

/* Grow KEY for the occurrence of the name USER_NAME at LOC appropriately for
   use with b4_check_user_names in ../data/bison.m4.  USER_NAME is not escaped
   with digraphs, so it must not contain `[' or `]'.  */
void muscle_user_name_list_grow (char const *key, char const *user_name,
                                 location loc);

/* Indicates whether a variable's value was specified with -D/--define, with
   -F/--force-define, or in the grammar file.  */
typedef enum {
  MUSCLE_PERCENT_DEFINE_D = 0, MUSCLE_PERCENT_DEFINE_F,
  MUSCLE_PERCENT_DEFINE_GRAMMAR_FILE
} muscle_percent_define_how;

/* Define the muscles for %define variable VARIABLE with VALUE specified
   at VARIABLE_LOC in the manner HOW unless it was specified in the
   grammar file while the previous definition for VARIABLE was specified
   with -F/--force-define.  Complain if a previous definition is being
   overridden and the new definition is specified in the grammar file.
   (These rules support the documented behavior as long as command-line
   definitions are processed before grammar file definitions.)  Record
   this as a user occurrence of VARIABLE by invoking
   muscle_user_name_list_grow.  */
void muscle_percent_define_insert (char const *variable, location variable_loc,
                                   char const *value,
                                   muscle_percent_define_how how);

/* Make sure that VARIABLE is set to the boolean VALUE.  Warn on mismatches
   only, but accept repeated declaration.  Used for backward compatibility
   between old directives such as %pure-parser, and the recommended use of
   variables (%define api.pure).   */
void muscle_percent_define_ensure (char const *variable, location variable_loc,
                                   bool value);

/* Mimic b4_percent_define_get in ../data/bison.m4 exactly.  That is, if the
   %define variable VARIABLE is defined, return its value.  Otherwise, return
   the empty string.  Also, record Bison's usage of VARIABLE by defining
   b4_percent_define_bison_variables(VARIABLE).  The caller is responsible for
   freeing the memory of the returned string.  */
char *muscle_percent_define_get (char const *variable);

/* Mimic muscle_percent_define_get_loc in ../data/bison.m4 exactly.  That is,
   if the %define variable VARIABLE is undefined, complain fatally since that's
   a Bison error.  Otherwise, return its definition location in a form
   approriate for the first argument of warn_at, complain_at, or fatal_at.
   Don't record this as a Bison usage of VARIABLE as there's no reason to
   suspect that the user-supplied value has yet influenced the output.  */
location muscle_percent_define_get_loc (char const *variable);

/* Mimic muscle_percent_define_get_syncline in ../data/bison.m4 exactly.  That
   is, if the %define variable VARIABLE is undefined, complain fatally since
   that's a Bison error.  Otherwise, return its definition location as a
   b4_syncline invocation.  Don't record this as a Bison usage of VARIABLE as
   there's no reason to suspect that the user-supplied value has yet influenced
   the output.  */
char const *muscle_percent_define_get_syncline (char const *variable);

/* Mimic b4_percent_define_ifdef in ../data/bison.m4 exactly.  That is, if the
   %define variable VARIABLE is defined, return true.  Otherwise, return false.
   Also, record Bison's usage of VARIABLE by defining
   b4_percent_define_bison_variables(VARIABLE).  */
bool muscle_percent_define_ifdef (char const *variable);

/* Mimic b4_percent_define_flag_if in ../data/bison.m4 exactly.  That is, if
   the %define variable VARIABLE is defined to "" or "true", return true.  If
   it is defined to "false", return false.  Complain if it is undefined (a
   Bison error since the default value should have been set already) or defined
   to any other value (possibly a user error).  Also, record Bison's usage of
   VARIABLE by defining b4_percent_define_bison_variables(VARIABLE).  */
bool muscle_percent_define_flag_if (char const *variable);

/* Mimic b4_percent_define_default in ../data/bison.m4 exactly.  That is, if
   the %define variable VARIABLE is undefined, set its value to VALUE.
   Don't record this as a Bison usage of VARIABLE as there's no reason to
   suspect that the value has yet influenced the output.  */
void muscle_percent_define_default (char const *variable, char const *value);

/* Mimic b4_percent_define_check_values in ../data/bison.m4 exactly except that
   the VALUES structure is more appropriate for C.  That is, VALUES points to a
   list of strings that is partitioned into sublists by NULL's, one terminating
   each sublist.  The last sublist is followed by a second NULL.  For each
   sublist, the first string is the name of a %define variable, and all
   remaining strings in that sublist are the valid values for that variable.
   Complain if such a variable is undefined (a Bison error since the default
   value should have been set already) or defined to any other value (possibly
   a user error).  Don't record this as a Bison usage of the variable as
   there's no reason to suspect that the value has yet influenced the
   output.  */
void muscle_percent_define_check_values (char const * const *values);

/* Grow the muscle for the %code qualifier QUALIFIER appearing at
   QUALIFIER_LOC with code CODE appearing at CODE_LOC.  Record this as a
   user occurrence of QUALIFIER by invoking
   muscle_user_name_list_grow.  */
void muscle_percent_code_grow (char const *qualifier, location qualifier_loc,
                               char const *code, location code_loc);

void muscles_m4_output (FILE *out);

#endif /* not MUSCLE_TAB_H_ */
Commit	Line	Data
	1	/* Muscle table manager for Bison,
	2
	3	Copyright (C) 2001-2003, 2006-2010 Free Software Foundation, Inc.
	4
	5	This file is part of Bison, the GNU Compiler Compiler.
	6
	7	This program is free software: you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation, either version 3 of the License, or
	10	(at your option) any later version.
	11
	12	This program is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with this program. If not, see <http://www.gnu.org/licenses/>. */
	19
	20	#ifndef MUSCLE_TAB_H_
	21	# define MUSCLE_TAB_H_
	22
	23	# include "location.h"
	24
	25	void muscle_init (void);
	26	void muscle_insert (char const key, char const value);
	27	char const muscle_find_const (char const key);
	28	char muscle_find (char const key);
	29	void muscle_free (void);
	30
	31
	32	/* An obstack dedicated to receive muscle keys and values. */
	33	extern struct obstack muscle_obstack;
	34
	35	#define MUSCLE_INSERT_BOOL(Key, Value) \
	36	do { \
	37	int v__ = Value; \
	38	MUSCLE_INSERT_INT (Key, v__); \
	39	} while(0)
	40
	41	#define MUSCLE_INSERT_INT(Key, Value) \
	42	do { \
	43	obstack_fgrow1 (&muscle_obstack, "%d", Value); \
	44	obstack_1grow (&muscle_obstack, 0); \
	45	muscle_insert (Key, obstack_finish (&muscle_obstack)); \
	46	} while(0)
	47
	48	#define MUSCLE_INSERT_LONG_INT(Key, Value) \
	49	do { \
	50	obstack_fgrow1 (&muscle_obstack, "%ld", Value); \
	51	obstack_1grow (&muscle_obstack, 0); \
	52	muscle_insert (Key, obstack_finish (&muscle_obstack)); \
	53	} while(0)
	54
	55	/* Key -> Value, but don't apply escaping to Value. */
	56	#define MUSCLE_INSERT_STRING_RAW(Key, Value) \
	57	do { \
	58	obstack_sgrow (&muscle_obstack, Value); \
	59	obstack_1grow (&muscle_obstack, 0); \
	60	muscle_insert (Key, obstack_finish (&muscle_obstack)); \
	61	} while(0)
	62
	63	/* Key -> Value, applying M4 escaping to Value. */
	64	#define MUSCLE_INSERT_STRING(Key, Value) \
	65	do { \
	66	MUSCLE_OBSTACK_SGROW (&muscle_obstack, Value); \
	67	obstack_1grow (&muscle_obstack, 0); \
	68	muscle_insert (Key, obstack_finish (&muscle_obstack)); \
	69	} while(0)
	70
	71	#define MUSCLE_OBSTACK_SGROW(Obstack, Value) \
	72	do { \
	73	char const *p__; \
	74	for (p__ = Value; *p__; p__++) \
	75	switch (*p__) \
	76	{ \
	77	case '$': obstack_sgrow (Obstack, "$]["); break; \
	78	case '@': obstack_sgrow (Obstack, "@@" ); break; \
	79	case '[': obstack_sgrow (Obstack, "@{" ); break; \
	80	case ']': obstack_sgrow (Obstack, "@}" ); break; \
	81	default: obstack_1grow (Obstack, *p__); break; \
	82	} \
	83	} while(0)
	84
	85	#define MUSCLE_INSERT_C_STRING(Key, Value) \
	86	do { \
	87	MUSCLE_OBSTACK_SGROW (&muscle_obstack, \
	88	quotearg_style (c_quoting_style, \
	89	Value)); \
	90	obstack_1grow (&muscle_obstack, 0); \
	91	muscle_insert (Key, obstack_finish (&muscle_obstack)); \
	92	} while(0)
	93
	94	/* Append VALUE to the current value of KEY. If KEY did not already
	95	exist, create it. Use MUSCLE_OBSTACK. De-allocate the previously
	96	associated value. Copy VALUE and SEPARATOR. */
	97
	98	void muscle_grow (const char key, const char value, const char *separator);
	99
	100
	101	/* Append VALUE to the current value of KEY, using muscle_grow. But
	102	in addition, issue a synchronization line for the location LOC. */
	103
	104	void muscle_code_grow (const char key, const char value, location loc);
	105
	106
	107	/* MUSCLE is an M4 list of pairs. Create or extend it with the pair
	108	(A1, A2) after escaping both values with digraphs. Note that because the
	109	muscle values are output double quoted, one needs to strip the first level
	110	of quotes to reach the list itself. */
	111	void muscle_pair_list_grow (const char *muscle,
	112	const char a1, const char a2);
	113
	114	/* In the format `[[file_name:line.column]], [[file_name:line.column]]', append
	115	LOC to MUSCLE. Use digraphs for special characters in each file name. */
	116	void muscle_location_grow (char const *key, location loc);
	117
	118	/* In the format `file_name:line.column', append BOUND to MUSCLE. Use digraphs
	119	for special characters in the file name. */
	120	void muscle_boundary_grow (char const *key, boundary bound);
	121
	122	/* Grow KEY for the occurrence of the name USER_NAME at LOC appropriately for
	123	use with b4_check_user_names in ../data/bison.m4. USER_NAME is not escaped
	124	with digraphs, so it must not contain `[' or `]'. */
	125	void muscle_user_name_list_grow (char const key, char const user_name,
	126	location loc);
	127
	128	/* Indicates whether a variable's value was specified with -D/--define, with
	129	-F/--force-define, or in the grammar file. */
	130	typedef enum {
	131	MUSCLE_PERCENT_DEFINE_D = 0, MUSCLE_PERCENT_DEFINE_F,
	132	MUSCLE_PERCENT_DEFINE_GRAMMAR_FILE
	133	} muscle_percent_define_how;
	134
	135	/* Define the muscles for %define variable VARIABLE with VALUE specified
	136	at VARIABLE_LOC in the manner HOW unless it was specified in the
	137	grammar file while the previous definition for VARIABLE was specified
	138	with -F/--force-define. Complain if a previous definition is being
	139	overridden and the new definition is specified in the grammar file.
	140	(These rules support the documented behavior as long as command-line
	141	definitions are processed before grammar file definitions.) Record
	142	this as a user occurrence of VARIABLE by invoking
	143	muscle_user_name_list_grow. */
	144	void muscle_percent_define_insert (char const *variable, location variable_loc,
	145	char const *value,
	146	muscle_percent_define_how how);
	147
	148	/* Make sure that VARIABLE is set to the boolean VALUE. Warn on mismatches
	149	only, but accept repeated declaration. Used for backward compatibility
	150	between old directives such as %pure-parser, and the recommended use of
	151	variables (%define api.pure). */
	152	void muscle_percent_define_ensure (char const *variable, location variable_loc,
	153	bool value);
	154
	155	/* Mimic b4_percent_define_get in ../data/bison.m4 exactly. That is, if the
	156	%define variable VARIABLE is defined, return its value. Otherwise, return
	157	the empty string. Also, record Bison's usage of VARIABLE by defining
	158	b4_percent_define_bison_variables(VARIABLE). The caller is responsible for
	159	freeing the memory of the returned string. */
	160	char muscle_percent_define_get (char const variable);
	161
	162	/* Mimic muscle_percent_define_get_loc in ../data/bison.m4 exactly. That is,
	163	if the %define variable VARIABLE is undefined, complain fatally since that's
	164	a Bison error. Otherwise, return its definition location in a form
	165	approriate for the first argument of warn_at, complain_at, or fatal_at.
	166	Don't record this as a Bison usage of VARIABLE as there's no reason to
	167	suspect that the user-supplied value has yet influenced the output. */
	168	location muscle_percent_define_get_loc (char const *variable);
	169
	170	/* Mimic muscle_percent_define_get_syncline in ../data/bison.m4 exactly. That
	171	is, if the %define variable VARIABLE is undefined, complain fatally since
	172	that's a Bison error. Otherwise, return its definition location as a
	173	b4_syncline invocation. Don't record this as a Bison usage of VARIABLE as
	174	there's no reason to suspect that the user-supplied value has yet influenced
	175	the output. */
	176	char const muscle_percent_define_get_syncline (char const variable);
	177
	178	/* Mimic b4_percent_define_ifdef in ../data/bison.m4 exactly. That is, if the
	179	%define variable VARIABLE is defined, return true. Otherwise, return false.
	180	Also, record Bison's usage of VARIABLE by defining
	181	b4_percent_define_bison_variables(VARIABLE). */
	182	bool muscle_percent_define_ifdef (char const *variable);
	183
	184	/* Mimic b4_percent_define_flag_if in ../data/bison.m4 exactly. That is, if
	185	the %define variable VARIABLE is defined to "" or "true", return true. If
	186	it is defined to "false", return false. Complain if it is undefined (a
	187	Bison error since the default value should have been set already) or defined
	188	to any other value (possibly a user error). Also, record Bison's usage of
	189	VARIABLE by defining b4_percent_define_bison_variables(VARIABLE). */
	190	bool muscle_percent_define_flag_if (char const *variable);
	191
	192	/* Mimic b4_percent_define_default in ../data/bison.m4 exactly. That is, if
	193	the %define variable VARIABLE is undefined, set its value to VALUE.
	194	Don't record this as a Bison usage of VARIABLE as there's no reason to
	195	suspect that the value has yet influenced the output. */
	196	void muscle_percent_define_default (char const variable, char const value);
	197
	198	/* Mimic b4_percent_define_check_values in ../data/bison.m4 exactly except that
	199	the VALUES structure is more appropriate for C. That is, VALUES points to a
	200	list of strings that is partitioned into sublists by NULL's, one terminating
	201	each sublist. The last sublist is followed by a second NULL. For each
	202	sublist, the first string is the name of a %define variable, and all
	203	remaining strings in that sublist are the valid values for that variable.
	204	Complain if such a variable is undefined (a Bison error since the default
	205	value should have been set already) or defined to any other value (possibly
	206	a user error). Don't record this as a Bison usage of the variable as
	207	there's no reason to suspect that the value has yet influenced the
	208	output. */
	209	void muscle_percent_define_check_values (char const * const *values);
	210
	211	/* Grow the muscle for the %code qualifier QUALIFIER appearing at
	212	QUALIFIER_LOC with code CODE appearing at CODE_LOC. Record this as a
	213	user occurrence of QUALIFIER by invoking
	214	muscle_user_name_list_grow. */
	215	void muscle_percent_code_grow (char const *qualifier, location qualifier_loc,
	216	char const *code, location code_loc);
	217
	218	void muscles_m4_output (FILE *out);
	219
	220	#endif /* not MUSCLE_TAB_H_ */