+/* 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 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) \
+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.
+
+ 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 + XSTRING (gl_state.object)->size; \
+ 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
+ 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 int parse_sexp_lookup_properties;
+extern INTERVAL interval_of P_ ((int, Lisp_Object));
+
+extern int scan_words P_ ((int, int));