[bpt/emacs.git] / src / syntax.h

/* Declarations having to do with GNU Emacs syntax tables.

Copyright (C) 1985, 1993-1994, 1997-1998, 2001-2011
  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 <http://www.gnu.org/licenses/>.  */


extern void update_syntax_table (EMACS_INT, int, int, Lisp_Object);

/* The standard syntax table is stored where it will automatically
   be used in all new buffers.  */
#define Vstandard_syntax_table BVAR (&buffer_defaults, syntax_table)

/* A syntax table is a chartable whose elements are cons cells
   (CODE+FLAGS . MATCHING-CHAR).  MATCHING-CHAR can be nil if the char
   is not a kind of parenthesis.

   The low 8 bits of CODE+FLAGS is a code, as follows:  */

enum syntaxcode
  {
    Swhitespace, /* for a whitespace character */
    Spunct,	 /* for random punctuation characters */
    Sword,	 /* for a word constituent */
    Ssymbol,	 /* symbol constituent but not word constituent */
    Sopen,	 /* for a beginning delimiter */
    Sclose,      /* for an ending delimiter */
    Squote,	 /* for a prefix character like Lisp ' */
    Sstring,	 /* for a string-grouping character like Lisp " */
    Smath,	 /* for delimiters like $ in Tex.  */
    Sescape,	 /* for a character that begins a C-style escape */
    Scharquote,  /* for a character that quotes the following character */
    Scomment,    /* for a comment-starting character */
    Sendcomment, /* for a comment-ending character */
    Sinherit,    /* use the standard syntax table for this character */
    Scomment_fence, /* Starts/ends comment which is delimited on the
		       other side by any char with the same syntaxcode.  */
    Sstring_fence,  /* Starts/ends string which is delimited on the
		       other side by any char with the same syntaxcode.  */
    Smax	 /* Upper bound on codes that are meaningful */
  };

/* Set the syntax entry VAL for char C in table TABLE.  */

#define SET_RAW_SYNTAX_ENTRY(table, c, val)	\
  CHAR_TABLE_SET ((table), c, (val))

/* Set the syntax entry VAL for char-range RANGE in table TABLE.
   RANGE is a cons (FROM . TO) specifying the range of characters.  */

#define SET_RAW_SYNTAX_ENTRY_RANGE(table, range, val)	\
  Fset_char_table_range ((table), (range), (val))

/* SYNTAX_ENTRY fetches the information from the entry for character C
   in syntax table TABLE, or from globally kept data (gl_state).
   Does inheritance.  */
/* CURRENT_SYNTAX_TABLE gives the syntax table valid for current
   position, it is either the buffer's syntax table, or syntax table
   found in text properties.  */

#ifdef SYNTAX_ENTRY_VIA_PROPERTY
#  define SYNTAX_ENTRY(c)                                             \
    (gl_state.use_global ? gl_state.global_code : SYNTAX_ENTRY_INT (c))
#  define CURRENT_SYNTAX_TABLE gl_state.current_syntax_table
#else
#  define SYNTAX_ENTRY SYNTAX_ENTRY_INT
#  define CURRENT_SYNTAX_TABLE BVAR (current_buffer, syntax_table)
#endif

#define SYNTAX_ENTRY_INT(c) CHAR_TABLE_REF (CURRENT_SYNTAX_TABLE, (c))

/* Extract the information from the entry for character C
   in the current syntax table.  */

#ifdef __GNUC__
#define SYNTAX(c)							\
  ({ Lisp_Object _syntax_temp;						\
     _syntax_temp = SYNTAX_ENTRY (c);					\
     (CONSP (_syntax_temp)						\
      ? (enum syntaxcode) (XINT (XCAR (_syntax_temp)) & 0xff)		\
      : Swhitespace); })

#define SYNTAX_WITH_FLAGS(c)						\
  ({ Lisp_Object _syntax_temp;						\
     _syntax_temp = SYNTAX_ENTRY (c);					\
     (CONSP (_syntax_temp)						\
      ? XINT (XCAR (_syntax_temp))					\
      : (int) Swhitespace); })

#define SYNTAX_MATCH(c)							\
  ({ Lisp_Object _syntax_temp;						\
     _syntax_temp = SYNTAX_ENTRY (c);					\
     (CONSP (_syntax_temp)						\
      ? XCDR (_syntax_temp)						\
      : Qnil); })
#else
extern Lisp_Object syntax_temp;
#define SYNTAX(c)							\
  (syntax_temp = SYNTAX_ENTRY ((c)),					\
   (CONSP (syntax_temp)							\
    ? (enum syntaxcode) (XINT (XCAR (syntax_temp)) & 0xff)	\
    : Swhitespace))

#define SYNTAX_WITH_FLAGS(c)						\
  (syntax_temp = SYNTAX_ENTRY ((c)),					\
   (CONSP (syntax_temp)							\
    ? XINT (XCAR (syntax_temp))					\
    : (int) Swhitespace))

#define SYNTAX_MATCH(c)							\
  (syntax_temp = SYNTAX_ENTRY ((c)),					\
   (CONSP (syntax_temp)							\
    ? XCDR (syntax_temp)						\
    : Qnil))
#endif


/* Whether the syntax of the character C has the prefix flag set.  */
extern int syntax_prefix_flag_p (int c);

/* This array, indexed by a character, contains the syntax code which that
 character signifies (as a char).  For example,
 (enum syntaxcode) syntax_spec_code['w'] is Sword.  */

extern unsigned char syntax_spec_code[0400];

/* Indexed by syntax code, give the letter that describes it.  */

extern char syntax_code_spec[16];

/* Convert the byte offset BYTEPOS into a character position,
   for the object recorded in gl_state with SETUP_SYNTAX_TABLE_FOR_OBJECT.

   The value is meant for use in the UPDATE_SYNTAX_TABLE... macros.
   These macros do nothing when parse_sexp_lookup_properties is 0,
   so we return 0 in that case, for speed.  */

#define SYNTAX_TABLE_BYTE_TO_CHAR(bytepos)				\
  (! parse_sexp_lookup_properties					\
   ? 0									\
   : STRINGP (gl_state.object)						\
   ? string_byte_to_char (gl_state.object, (bytepos))			\
   : BUFFERP (gl_state.object)						\
   ? buf_bytepos_to_charpos (XBUFFER (gl_state.object),			\
			     (bytepos) + BUF_BEGV_BYTE (XBUFFER (gl_state.object)) - 1) - BUF_BEGV (XBUFFER (gl_state.object)) + 1	\
   : NILP (gl_state.object)						\
   ? BYTE_TO_CHAR ((bytepos) + BEGV_BYTE - 1) - BEGV + 1		\
   : (bytepos))

/* Make syntax table state (gl_state) good for CHARPOS, assuming it is
   currently good for a position before CHARPOS.  */

#define UPDATE_SYNTAX_TABLE_FORWARD(charpos)			\
  (parse_sexp_lookup_properties					\
   && (charpos) >= gl_state.e_property				\
   ? (update_syntax_table ((charpos) + gl_state.offset, 1, 0,	\
			   gl_state.object),			\
      1)							\
   : 0)

/* Make syntax table state (gl_state) good for CHARPOS, assuming it is
   currently good for a position after CHARPOS.  */

#define UPDATE_SYNTAX_TABLE_BACKWARD(charpos)			\
  (parse_sexp_lookup_properties					\
   && (charpos) < gl_state.b_property				\
   ? (update_syntax_table ((charpos) + gl_state.offset, -1, 0,	\
			   gl_state.object),			\
      1)							\
   : 0)

/* Make syntax table good for CHARPOS.  */

#define UPDATE_SYNTAX_TABLE(charpos)				\
  (parse_sexp_lookup_properties					\
   && (charpos) < gl_state.b_property				\
   ? (update_syntax_table ((charpos) + gl_state.offset, -1, 0,	\
			   gl_state.object),			\
      1)							\
   : (parse_sexp_lookup_properties				\
      && (charpos) >= gl_state.e_property			\
      ? (update_syntax_table ((charpos) + gl_state.offset, 1, 0,\
			      gl_state.object),			\
	 1)							\
      : 0))

/* This macro sets up the buffer-global syntax table.  */
#define SETUP_BUFFER_SYNTAX_TABLE()					\
do									\
  {									\
    gl_state.use_global = 0;						\
    gl_state.current_syntax_table = BVAR (current_buffer, syntax_table);	\
  } while (0)

/* This macro should be called with FROM at the start of forward
   search, or after the last position of the backward search.  It
   makes sure that the first char is picked up with correct table, so
   one does not need to call UPDATE_SYNTAX_TABLE immediately after the
   call.
   Sign of COUNT gives the direction of the search.
 */

#define SETUP_SYNTAX_TABLE(FROM, COUNT)					\
do									\
  {									\
    SETUP_BUFFER_SYNTAX_TABLE ();					\
    gl_state.b_property = BEGV;						\
    gl_state.e_property = ZV + 1;					\
    gl_state.object = Qnil;						\
    gl_state.offset = 0;						\
    if (parse_sexp_lookup_properties)					\
      if ((COUNT) > 0 || (FROM) > BEGV)					\
        update_syntax_table ((COUNT) > 0 ? (FROM) : (FROM) - 1, (COUNT),\
			     1, Qnil);					\
  }									\
while (0)

/* Same as above, but in OBJECT.  If OBJECT is nil, use current buffer.
   If it is t, ignore properties altogether.

   This is meant for regex.c to use.  For buffers, regex.c passes arguments
   to the UPDATE_SYNTAX_TABLE macros which are relative to BEGV.
   So if it is a buffer, we set the offset field to BEGV.  */

#define SETUP_SYNTAX_TABLE_FOR_OBJECT(OBJECT, FROM, COUNT)		\
do									\
  {									\
    SETUP_BUFFER_SYNTAX_TABLE ();					\
    gl_state.object = (OBJECT);						\
    if (BUFFERP (gl_state.object))					\
      {									\
	struct buffer *buf = XBUFFER (gl_state.object);			\
	gl_state.b_property = 1;					\
	gl_state.e_property = BUF_ZV (buf) - BUF_BEGV (buf) + 1;	\
	gl_state.offset = BUF_BEGV (buf) - 1;				\
      }									\
    else if (NILP (gl_state.object))					\
      {									\
	gl_state.b_property = 1;					\
	gl_state.e_property = ZV - BEGV + 1;				\
	gl_state.offset = BEGV - 1;					\
      }									\
    else if (EQ (gl_state.object, Qt))					\
      {									\
	gl_state.b_property = 0;					\
	gl_state.e_property = 1500000000;				\
	gl_state.offset = 0;						\
      }									\
    else								\
      {									\
	gl_state.b_property = 0;					\
	gl_state.e_property = 1 + SCHARS (gl_state.object);		\
	gl_state.offset = 0;						\
      }									\
    if (parse_sexp_lookup_properties)					\
      update_syntax_table (((FROM) + gl_state.offset			\
			    + (COUNT > 0 ? 0 :  -1)),			\
			   COUNT, 1, gl_state.object);			\
  }									\
while (0)

struct gl_state_s
{
  Lisp_Object object;			/* The object we are scanning. */
  int start;				/* Where to stop. */
  int stop;				/* Where to stop. */
  int use_global;			/* Whether to use global_code
					   or c_s_t. */
  Lisp_Object global_code;		/* Syntax code of current char. */
  Lisp_Object current_syntax_table;	/* Syntax table for current pos. */
  Lisp_Object old_prop;			/* Syntax-table prop at prev pos. */
  int b_property;			/* First index where c_s_t is valid. */
  int e_property;			/* First index where c_s_t is
					   not valid. */
  INTERVAL forward_i;			/* Where to start lookup on forward */
  INTERVAL backward_i;			/* or backward movement.  The
					   data in c_s_t is valid
					   between these intervals,
					   and possibly at the
					   intervals too, depending
					   on: */
  /* Offset for positions specified to UPDATE_SYNTAX_TABLE.  */
  int offset;
};

extern struct gl_state_s gl_state;
extern EMACS_INT scan_words (EMACS_INT, EMACS_INT);
Commit	Line	Data
9889c728	1	/* Declarations having to do with GNU Emacs syntax tables.
95df8112 GM	2
	3	Copyright (C) 1985, 1993-1994, 1997-1998, 2001-2011
	4	Free Software Foundation, Inc.
9889c728 JB	5
	6	This file is part of GNU Emacs.
	7
b9b1cc14	8	GNU Emacs is free software: you can redistribute it and/or modify
9889c728	9	it under the terms of the GNU General Public License as published by
b9b1cc14 GM	10	the Free Software Foundation, either version 3 of the License, or
b9b1cc14 GM	11	(at your option) any later version.
9889c728 JB	12
	13	GNU Emacs is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
b9b1cc14	19	along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
9889c728 JB	20
9889c728 JB	21
4f3a2f8d	22	extern void update_syntax_table (EMACS_INT, int, int, Lisp_Object);
9889c728 JB	23
	24	/* The standard syntax table is stored where it will automatically
	25	be used in all new buffers. */
4b4deea2	26	#define Vstandard_syntax_table BVAR (&buffer_defaults, syntax_table)
9889c728	27
e46c910e RS	28	/* A syntax table is a chartable whose elements are cons cells
	29	(CODE+FLAGS . MATCHING-CHAR). MATCHING-CHAR can be nil if the char
	30	is not a kind of parenthesis.
9889c728	31
e46c910e	32	The low 8 bits of CODE+FLAGS is a code, as follows: */
9889c728 JB	33
	34	enum syntaxcode
	35	{
	36	Swhitespace, /* for a whitespace character */
	37	Spunct, /* for random punctuation characters */
	38	Sword, /* for a word constituent */
	39	Ssymbol, /* symbol constituent but not word constituent */
	40	Sopen, /* for a beginning delimiter */
	41	Sclose, /* for an ending delimiter */
	42	Squote, /* for a prefix character like Lisp ' */
	43	Sstring, /* for a string-grouping character like Lisp " */
5eea1c5a	44	Smath, /* for delimiters like $ in Tex. */
9889c728 JB	45	Sescape, /* for a character that begins a C-style escape */
	46	Scharquote, /* for a character that quotes the following character */
	47	Scomment, /* for a comment-starting character */
	48	Sendcomment, /* for a comment-ending character */
c8cdcb16	49	Sinherit, /* use the standard syntax table for this character */
5eea1c5a	50	Scomment_fence, /* Starts/ends comment which is delimited on the
47ab3db5	51	other side by any char with the same syntaxcode. */
5eea1c5a	52	Sstring_fence, /* Starts/ends string which is delimited on the
47ab3db5	53	other side by any char with the same syntaxcode. */
9889c728 JB	54	Smax /* Upper bound on codes that are meaningful */
	55	};
	56
e0b8ff93	57	/* Set the syntax entry VAL for char C in table TABLE. */
e46c910e	58
f4926ee8	59	#define SET_RAW_SYNTAX_ENTRY(table, c, val) \
dcb82a5e	60	CHAR_TABLE_SET ((table), c, (val))
e0b8ff93	61
f4926ee8 KH	62	/* Set the syntax entry VAL for char-range RANGE in table TABLE.
f4926ee8 KH	63	RANGE is a cons (FROM . TO) specifying the range of characters. */
e0b8ff93	64
f4926ee8 KH	65	#define SET_RAW_SYNTAX_ENTRY_RANGE(table, range, val) \
f4926ee8 KH	66	Fset_char_table_range ((table), (range), (val))
9889c728	67
5eea1c5a	68	/* SYNTAX_ENTRY fetches the information from the entry for character C
177c0ea7	69	in syntax table TABLE, or from globally kept data (gl_state).
5eea1c5a RS	70	Does inheritance. */
	71	/* CURRENT_SYNTAX_TABLE gives the syntax table valid for current
	72	position, it is either the buffer's syntax table, or syntax table
	73	found in text properties. */
	74
	75	#ifdef SYNTAX_ENTRY_VIA_PROPERTY
	76	# define SYNTAX_ENTRY(c) \
	77	(gl_state.use_global ? gl_state.global_code : SYNTAX_ENTRY_INT (c))
	78	# define CURRENT_SYNTAX_TABLE gl_state.current_syntax_table
	79	#else
	80	# define SYNTAX_ENTRY SYNTAX_ENTRY_INT
4b4deea2	81	# define CURRENT_SYNTAX_TABLE BVAR (current_buffer, syntax_table)
5eea1c5a	82	#endif
e0b8ff93	83
501d7ac6	84	#define SYNTAX_ENTRY_INT(c) CHAR_TABLE_REF (CURRENT_SYNTAX_TABLE, (c))
e0b8ff93	85
e46c910e	86	/* Extract the information from the entry for character C
e0b8ff93	87	in the current syntax table. */
c8cdcb16 RS	88
c8cdcb16 RS	89	#ifdef __GNUC__
e46c910e	90	#define SYNTAX(c) \
874757e8 AS	91	({ Lisp_Object _syntax_temp; \
	92	_syntax_temp = SYNTAX_ENTRY (c); \
	93	(CONSP (_syntax_temp) \
	94	? (enum syntaxcode) (XINT (XCAR (_syntax_temp)) & 0xff) \
e0b8ff93	95	: Swhitespace); })
e46c910e RS	96
e46c910e RS	97	#define SYNTAX_WITH_FLAGS(c) \
874757e8 AS	98	({ Lisp_Object _syntax_temp; \
	99	_syntax_temp = SYNTAX_ENTRY (c); \
	100	(CONSP (_syntax_temp) \
	101	? XINT (XCAR (_syntax_temp)) \
e0b8ff93	102	: (int) Swhitespace); })
e46c910e RS	103
e46c910e RS	104	#define SYNTAX_MATCH(c) \
874757e8 AS	105	({ Lisp_Object _syntax_temp; \
	106	_syntax_temp = SYNTAX_ENTRY (c); \
	107	(CONSP (_syntax_temp) \
	108	? XCDR (_syntax_temp) \
e0b8ff93	109	: Qnil); })
c8cdcb16	110	#else
3d7db6f1	111	extern Lisp_Object syntax_temp;
e46c910e	112	#define SYNTAX(c) \
9d40ebd2	113	(syntax_temp = SYNTAX_ENTRY ((c)), \
e46c910e	114	(CONSP (syntax_temp) \
3331fb06	115	? (enum syntaxcode) (XINT (XCAR (syntax_temp)) & 0xff) \
e0b8ff93	116	: Swhitespace))
e46c910e RS	117
e46c910e RS	118	#define SYNTAX_WITH_FLAGS(c) \
9d40ebd2	119	(syntax_temp = SYNTAX_ENTRY ((c)), \
e46c910e	120	(CONSP (syntax_temp) \
3331fb06	121	? XINT (XCAR (syntax_temp)) \
e0b8ff93	122	: (int) Swhitespace))
e46c910e RS	123
e46c910e RS	124	#define SYNTAX_MATCH(c) \
9d40ebd2	125	(syntax_temp = SYNTAX_ENTRY ((c)), \
e46c910e	126	(CONSP (syntax_temp) \
3331fb06	127	? XCDR (syntax_temp) \
e0b8ff93	128	: Qnil))
c8cdcb16	129	#endif
9889c728	130
a306d6f1	131
c5683ceb SM	132	/* Whether the syntax of the character C has the prefix flag set. */
c5683ceb SM	133	extern int syntax_prefix_flag_p (int c);
c0364919	134
9889c728 JB	135	/* This array, indexed by a character, contains the syntax code which that
9889c728 JB	136	character signifies (as a char). For example,
5eea1c5a	137	(enum syntaxcode) syntax_spec_code['w'] is Sword. */
9889c728 JB	138
	139	extern unsigned char syntax_spec_code[0400];
	140
5eea1c5a RS	141	/* Indexed by syntax code, give the letter that describes it. */
	142
	143	extern char syntax_code_spec[16];
	144
c292db29	145	/* Convert the byte offset BYTEPOS into a character position,
2f16e7fd RS	146	for the object recorded in gl_state with SETUP_SYNTAX_TABLE_FOR_OBJECT.
	147
	148	The value is meant for use in the UPDATE_SYNTAX_TABLE... macros.
	149	These macros do nothing when parse_sexp_lookup_properties is 0,
	150	so we return 0 in that case, for speed. */
c292db29 RS	151
c292db29 RS	152	#define SYNTAX_TABLE_BYTE_TO_CHAR(bytepos) \
2f16e7fd RS	153	(! parse_sexp_lookup_properties \
	154	? 0 \
	155	: STRINGP (gl_state.object) \
c292db29 RS	156	? string_byte_to_char (gl_state.object, (bytepos)) \
c292db29 RS	157	: BUFFERP (gl_state.object) \
f79b4b7e KH	158	? buf_bytepos_to_charpos (XBUFFER (gl_state.object), \
f79b4b7e KH	159	(bytepos) + BUF_BEGV_BYTE (XBUFFER (gl_state.object)) - 1) - BUF_BEGV (XBUFFER (gl_state.object)) + 1 \
c292db29	160	: NILP (gl_state.object) \
f79b4b7e	161	? BYTE_TO_CHAR ((bytepos) + BEGV_BYTE - 1) - BEGV + 1 \
c292db29 RS	162	: (bytepos))
c292db29 RS	163
f79b4b7e KH	164	/* Make syntax table state (gl_state) good for CHARPOS, assuming it is
f79b4b7e KH	165	currently good for a position before CHARPOS. */
5eea1c5a	166
f79b4b7e	167	#define UPDATE_SYNTAX_TABLE_FORWARD(charpos) \
2f16e7fd	168	(parse_sexp_lookup_properties \
f79b4b7e KH	169	&& (charpos) >= gl_state.e_property \
f79b4b7e KH	170	? (update_syntax_table ((charpos) + gl_state.offset, 1, 0, \
c292db29 RS	171	gl_state.object), \
	172	1) \
	173	: 0)
5eea1c5a	174
f79b4b7e KH	175	/* Make syntax table state (gl_state) good for CHARPOS, assuming it is
f79b4b7e KH	176	currently good for a position after CHARPOS. */
5eea1c5a	177
f79b4b7e	178	#define UPDATE_SYNTAX_TABLE_BACKWARD(charpos) \
2f16e7fd	179	(parse_sexp_lookup_properties \
4948e1f2	180	&& (charpos) < gl_state.b_property \
f79b4b7e	181	? (update_syntax_table ((charpos) + gl_state.offset, -1, 0, \
c292db29 RS	182	gl_state.object), \
	183	1) \
	184	: 0)
e2d8d746	185
f79b4b7e	186	/* Make syntax table good for CHARPOS. */
e2d8d746	187
f79b4b7e	188	#define UPDATE_SYNTAX_TABLE(charpos) \
2f16e7fd	189	(parse_sexp_lookup_properties \
4948e1f2	190	&& (charpos) < gl_state.b_property \
f79b4b7e	191	? (update_syntax_table ((charpos) + gl_state.offset, -1, 0, \
c292db29 RS	192	gl_state.object), \
c292db29 RS	193	1) \
2f16e7fd	194	: (parse_sexp_lookup_properties \
f79b4b7e KH	195	&& (charpos) >= gl_state.e_property \
f79b4b7e KH	196	? (update_syntax_table ((charpos) + gl_state.offset, 1, 0,\
c292db29 RS	197	gl_state.object), \
	198	1) \
	199	: 0))
5eea1c5a	200
d48cd3f4 SM	201	/* This macro sets up the buffer-global syntax table. */
	202	#define SETUP_BUFFER_SYNTAX_TABLE() \
	203	do \
	204	{ \
	205	gl_state.use_global = 0; \
4b4deea2	206	gl_state.current_syntax_table = BVAR (current_buffer, syntax_table); \
d48cd3f4 SM	207	} while (0)
d48cd3f4 SM	208
5eea1c5a RS	209	/* This macro should be called with FROM at the start of forward
	210	search, or after the last position of the backward search. It
	211	makes sure that the first char is picked up with correct table, so
	212	one does not need to call UPDATE_SYNTAX_TABLE immediately after the
177c0ea7	213	call.
5eea1c5a RS	214	Sign of COUNT gives the direction of the search.
	215	*/
	216
c292db29	217	#define SETUP_SYNTAX_TABLE(FROM, COUNT) \
92413ef3	218	do \
2f16e7fd	219	{ \
d48cd3f4	220	SETUP_BUFFER_SYNTAX_TABLE (); \
4948e1f2	221	gl_state.b_property = BEGV; \
2f16e7fd RS	222	gl_state.e_property = ZV + 1; \
2f16e7fd RS	223	gl_state.object = Qnil; \
2f16e7fd	224	gl_state.offset = 0; \
2f16e7fd	225	if (parse_sexp_lookup_properties) \
9b9794f0 RS	226	if ((COUNT) > 0 \|\| (FROM) > BEGV) \
	227	update_syntax_table ((COUNT) > 0 ? (FROM) : (FROM) - 1, (COUNT),\
	228	1, Qnil); \
2f16e7fd	229	} \
92413ef3	230	while (0)
5eea1c5a RS	231
5eea1c5a RS	232	/* Same as above, but in OBJECT. If OBJECT is nil, use current buffer.
e2d8d746 RS	233	If it is t, ignore properties altogether.
	234
	235	This is meant for regex.c to use. For buffers, regex.c passes arguments
	236	to the UPDATE_SYNTAX_TABLE macros which are relative to BEGV.
4bbd5bc3	237	So if it is a buffer, we set the offset field to BEGV. */
5eea1c5a	238
c292db29	239	#define SETUP_SYNTAX_TABLE_FOR_OBJECT(OBJECT, FROM, COUNT) \
92413ef3	240	do \
4bbd5bc3	241	{ \
d48cd3f4	242	SETUP_BUFFER_SYNTAX_TABLE (); \
c292db29 RS	243	gl_state.object = (OBJECT); \
	244	if (BUFFERP (gl_state.object)) \
	245	{ \
	246	struct buffer *buf = XBUFFER (gl_state.object); \
4948e1f2	247	gl_state.b_property = 1; \
1d1293dd	248	gl_state.e_property = BUF_ZV (buf) - BUF_BEGV (buf) + 1; \
c292db29 RS	249	gl_state.offset = BUF_BEGV (buf) - 1; \
	250	} \
	251	else if (NILP (gl_state.object)) \
4bbd5bc3	252	{ \
4948e1f2	253	gl_state.b_property = 1; \
1d1293dd	254	gl_state.e_property = ZV - BEGV + 1; \
4bbd5bc3 RS	255	gl_state.offset = BEGV - 1; \
4bbd5bc3 RS	256	} \
c292db29	257	else if (EQ (gl_state.object, Qt)) \
4bbd5bc3	258	{ \
4948e1f2	259	gl_state.b_property = 0; \
4bbd5bc3 RS	260	gl_state.e_property = 1500000000; \
	261	gl_state.offset = 0; \
	262	} \
	263	else \
	264	{ \
4948e1f2	265	gl_state.b_property = 0; \
d5db4077	266	gl_state.e_property = 1 + SCHARS (gl_state.object); \
4bbd5bc3 RS	267	gl_state.offset = 0; \
4bbd5bc3 RS	268	} \
4bbd5bc3	269	if (parse_sexp_lookup_properties) \
f79b4b7e	270	update_syntax_table (((FROM) + gl_state.offset \
c292db29 RS	271	+ (COUNT > 0 ? 0 : -1)), \
c292db29 RS	272	COUNT, 1, gl_state.object); \
4bbd5bc3	273	} \
92413ef3	274	while (0)
5eea1c5a RS	275
	276	struct gl_state_s
	277	{
c292db29	278	Lisp_Object object; /* The object we are scanning. */
5eea1c5a RS	279	int start; /* Where to stop. */
	280	int stop; /* Where to stop. */
	281	int use_global; /* Whether to use global_code
	282	or c_s_t. */
	283	Lisp_Object global_code; /* Syntax code of current char. */
	284	Lisp_Object current_syntax_table; /* Syntax table for current pos. */
	285	Lisp_Object old_prop; /* Syntax-table prop at prev pos. */
4948e1f2	286	int b_property; /* First index where c_s_t is valid. */
5eea1c5a RS	287	int e_property; /* First index where c_s_t is
	288	not valid. */
	289	INTERVAL forward_i; /* Where to start lookup on forward */
	290	INTERVAL backward_i; /* or backward movement. The
	291	data in c_s_t is valid
	292	between these intervals,
	293	and possibly at the
	294	intervals too, depending
	295	on: */
e2d8d746 RS	296	/* Offset for positions specified to UPDATE_SYNTAX_TABLE. */
e2d8d746 RS	297	int offset;
5eea1c5a RS	298	};
	299
	300	extern struct gl_state_s gl_state;
4f3a2f8d	301	extern EMACS_INT scan_words (EMACS_INT, EMACS_INT);