/* Declarations having to do with GNU Emacs syntax tables.
- Copyright (C) 1985, 1993, 1994, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1985, 93, 94, 97, 1998 Free Software Foundation, Inc.
This file is part of GNU Emacs.
extern Lisp_Object Qsyntax_table_p;
-extern Lisp_Object Fsyntax_table_p (), Fsyntax_table (), Fset_syntax_table ();
-extern void update_syntax_table ();
+extern void update_syntax_table P_ ((int, int, int, Lisp_Object));
/* The standard syntax table is stored where it will automatically
be used in all new buffers. */
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 a char with the same syntaxcode. */
+ other side by any char with the same syntaxcode. */
Sstring_fence, /* Starts/ends string which is delimited on the
- other side by a char with the same syntaxcode. */
+ other side by any char with the same syntaxcode. */
Smax /* Upper bound on codes that are meaningful */
};
temp; })
#else
extern Lisp_Object syntax_temp;
-extern Lisp_Object syntax_parent_lookup ();
+extern Lisp_Object syntax_parent_lookup P_ ((Lisp_Object, int));
#define SYNTAX_ENTRY_FOLLOW_PARENT(table, c) \
(syntax_temp = XCHAR_TABLE (table)->contents[(c)], \
# define CURRENT_SYNTAX_TABLE current_buffer->syntax_table
#endif
-#define SYNTAX_ENTRY_INT(c) \
- ((c) < CHAR_TABLE_SINGLE_BYTE_SLOTS \
+#define SYNTAX_ENTRY_INT(c) \
+ ((c) < CHAR_TABLE_SINGLE_BYTE_SLOTS \
? SYNTAX_ENTRY_FOLLOW_PARENT (CURRENT_SYNTAX_TABLE, \
- (unsigned char) (c)) \
- : Faref (CURRENT_SYNTAX_TABLE, make_number ((c))))
+ (unsigned char) (c)) \
+ : Faref (CURRENT_SYNTAX_TABLE, \
+ make_number (c)))
/* Extract the information from the entry for character C
in the current syntax table. */
({ Lisp_Object temp; \
temp = SYNTAX_ENTRY (c); \
(CONSP (temp) \
- ? (enum syntaxcode) (XINT (XCONS (temp)->car) & 0xff) \
+ ? (enum syntaxcode) (XINT (XCAR (temp)) & 0xff) \
: Swhitespace); })
#define SYNTAX_WITH_FLAGS(c) \
({ Lisp_Object temp; \
temp = SYNTAX_ENTRY (c); \
(CONSP (temp) \
- ? XINT (XCONS (temp)->car) \
+ ? XINT (XCAR (temp)) \
: (int) Swhitespace); })
#define SYNTAX_MATCH(c) \
({ Lisp_Object temp; \
temp = SYNTAX_ENTRY (c); \
(CONSP (temp) \
- ? XCONS (temp)->cdr \
+ ? XCDR (temp) \
: Qnil); })
#else
#define SYNTAX(c) \
(syntax_temp = SYNTAX_ENTRY ((c)), \
(CONSP (syntax_temp) \
- ? (enum syntaxcode) (XINT (XCONS (syntax_temp)->car) & 0xff) \
+ ? (enum syntaxcode) (XINT (XCAR (syntax_temp)) & 0xff) \
: Swhitespace))
#define SYNTAX_WITH_FLAGS(c) \
(syntax_temp = SYNTAX_ENTRY ((c)), \
(CONSP (syntax_temp) \
- ? XINT (XCONS (syntax_temp)->car) \
+ ? XINT (XCAR (syntax_temp)) \
: (int) Swhitespace))
#define SYNTAX_MATCH(c) \
(syntax_temp = SYNTAX_ENTRY ((c)), \
(CONSP (syntax_temp) \
- ? XCONS (syntax_temp)->cdr \
+ ? XCDR (syntax_temp) \
: Qnil))
#endif
-/* Then there are six single-bit flags that have the following meanings:
+/* Then there are seven single-bit flags that have the following meanings:
1. This character is the first of a two-character comment-start sequence.
2. This character is the second of a two-character comment-start sequence.
3. This character is the first of a two-character comment-end sequence.
4. This character is the second of a two-character comment-end sequence.
5. This character is a prefix, for backward-prefix-chars.
+ 6. see below
+ 7. This character is part of a nestable comment sequence.
Note that any two-character sequence whose first character has flag 1
and whose second character has flag 2 will be interpreted as a comment start.
Style a is always the default.
*/
+/* These macros extract a particular flag for a given character. */
+
#define SYNTAX_COMSTART_FIRST(c) ((SYNTAX_WITH_FLAGS (c) >> 16) & 1)
#define SYNTAX_COMSTART_SECOND(c) ((SYNTAX_WITH_FLAGS (c) >> 17) & 1)
#define SYNTAX_PREFIX(c) ((SYNTAX_WITH_FLAGS (c) >> 20) & 1)
-/* extract the comment style bit from the syntax table entry */
#define SYNTAX_COMMENT_STYLE(c) ((SYNTAX_WITH_FLAGS (c) >> 21) & 1)
+#define SYNTAX_COMMENT_NESTED(c) ((SYNTAX_WITH_FLAGS (c) >> 22) & 1)
+
+/* These macros extract specific flags from an integer
+ that holds the syntax code and the flags. */
+
+#define SYNTAX_FLAGS_COMSTART_FIRST(flags) (((flags) >> 16) & 1)
+
+#define SYNTAX_FLAGS_COMSTART_SECOND(flags) (((flags) >> 17) & 1)
+
+#define SYNTAX_FLAGS_COMEND_FIRST(flags) (((flags) >> 18) & 1)
+
+#define SYNTAX_FLAGS_COMEND_SECOND(flags) (((flags) >> 19) & 1)
+
+#define SYNTAX_FLAGS_PREFIX(flags) (((flags) >> 20) & 1)
+
+#define SYNTAX_FLAGS_COMMENT_STYLE(flags) (((flags) >> 21) & 1)
+
+#define SYNTAX_FLAGS_COMMENT_NESTED(flags) (((flags) >> 22) & 1)
+
/* 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 char syntax_code_spec[16];
-/* Make syntax table state (gl_state) good for POS, assuming it is
- currently good for a position before POS. */
-#define UPDATE_SYNTAX_TABLE_FORWARD(pos) \
- ((pos) >= gl_state.e_property ? \
- ( update_syntax_table ((pos), 1, 0), 1 ) : 0)
-
-
-/* Make syntax table state (gl_state) good for POS, assuming it is
- currently good for a position after POS. */
-#define UPDATE_SYNTAX_TABLE_BACKWARD(pos) \
- ((pos) <= gl_state.b_property ? \
- ( update_syntax_table ((pos), -1, 0), 1 ) : 0)
-
-/* Make syntax table good for POS. */
-#define UPDATE_SYNTAX_TABLE(pos) \
- ((pos) <= gl_state.b_property ? \
- ( update_syntax_table ((pos), -1, 0), 1 ) : \
- ( (pos) >= gl_state.e_property ? \
- ( update_syntax_table ((pos), 1, 0), 1 ) : 0))
+/* 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 should be called with FROM at the start of forward
search, or after the last position of the backward search. It
Sign of COUNT gives the direction of the search.
*/
-#define SETUP_SYNTAX_TABLE(from,count) \
- gl_state.b_property = BEGV - 1; \
- gl_state.e_property = ZV + 1; \
- gl_state.use_global = 0; \
- gl_state.current_syntax_table = current_buffer->syntax_table; \
- if (parse_sexp_lookup_properties) \
- update_syntax_table ((count) > 0 ? (from) : (from) - 1, (count), 1, Qnil);
+#define SETUP_SYNTAX_TABLE(FROM, COUNT) \
+if (1) \
+ { \
+ gl_state.b_property = BEGV; \
+ gl_state.e_property = ZV + 1; \
+ gl_state.object = Qnil; \
+ gl_state.use_global = 0; \
+ gl_state.offset = 0; \
+ gl_state.current_syntax_table = current_buffer->syntax_table; \
+ if (parse_sexp_lookup_properties) \
+ if ((COUNT) > 0 || (FROM) > BEGV) \
+ update_syntax_table ((COUNT) > 0 ? (FROM) : (FROM) - 1, (COUNT),\
+ 1, Qnil); \
+ } \
+else
/* Same as above, but in OBJECT. If OBJECT is nil, use current buffer.
- If it is t, ignore properties altogether. */
-
-#define SETUP_SYNTAX_TABLE_FOR_OBJECT(object, from, count) \
- if (BUFFERP (object)) \
- { \
- gl_state.b_property = BEGV - 1; \
- gl_state.e_property = ZV; \
- } \
- else if (EQ (object, Qt)) \
- { \
- gl_state.b_property = - 1; \
- gl_state.e_property = 1500000000; \
- } \
- else \
- { \
- gl_state.b_property = -1; \
- gl_state.e_property = 1 + XSTRING (object)->size; \
- } \
- gl_state.use_global = 0; \
- gl_state.current_syntax_table = current_buffer->syntax_table; \
- if (parse_sexp_lookup_properties) \
- update_syntax_table (count > 0 ? (from) : (from) - 1, count, 1, object);
+ 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) \
+if (1) \
+ { \
+ 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; \
+ } \
+ gl_state.use_global = 0; \
+ gl_state.current_syntax_table = current_buffer->syntax_table; \
+ if (parse_sexp_lookup_properties) \
+ update_syntax_table (((FROM) + gl_state.offset \
+ + (COUNT > 0 ? 0 : -1)), \
+ COUNT, 1, gl_state.object); \
+ } \
+else
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
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; /* Last index where c_s_t is
- not valid. */
+ 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 */
and possibly at the
intervals too, depending
on: */
- char left_ok;
- char right_ok;
+ /* Offset for positions specified to UPDATE_SYNTAX_TABLE. */
+ int offset;
};
extern struct gl_state_s gl_state;
extern int parse_sexp_lookup_properties;
-extern INTERVAL interval_of();
+extern INTERVAL interval_of P_ ((int, Lisp_Object));
+
+extern int scan_words P_ ((int, int));