- int first_line;
- int first_column;
- int last_line;
- int last_column;
-} location_t;
-#define YYLTYPE location_t
-
-/* Initialize LOC. */
-# define LOCATION_RESET(Loc) \
- (Loc).first_column = (Loc).first_line = 1; \
- (Loc).last_column = (Loc).last_line = 1;
-
-/* Advance of NUM columns. */
-# define LOCATION_COLUMNS(Loc, Num) \
- (Loc).last_column += Num;
-
-/* Advance of NUM lines. */
-# define LOCATION_LINES(Loc, Num) \
- (Loc).last_column = 1; \
- (Loc).last_line += Num;
-
-/* Restart: move the first cursor to the last position. */
-# define LOCATION_STEP(Loc) \
- (Loc).first_column = (Loc).last_column; \
- (Loc).first_line = (Loc).last_line;
-
-/* Output LOC on the stream OUT. */
-# define LOCATION_PRINT(Out, Loc) \
- fprintf (stderr, "%s:", infile); \
- if ((Loc).first_line != (Loc).last_line) \
- fprintf (Out, "%d.%d-%d.%d", \
- (Loc).first_line, (Loc).first_column, \
- (Loc).last_line, (Loc).last_column - 1); \
- else if ((Loc).first_column < (Loc).last_column - 1) \
- fprintf (Out, "%d.%d-%d", (Loc).first_line, \
- (Loc).first_column, (Loc).last_column - 1); \
- else \
- fprintf (Out, "%d.%d", (Loc).first_line, (Loc).first_column)
-
-#endif /* !LOCATION_H_ */
+ return (a.column == b.column
+ && a.line == b.line
+ && UNIQSTR_EQ (a.file, b.file));
+}
+
+/* A location, that is, a region of source code. */
+typedef struct
+{
+ /* Boundary just before the location starts. */
+ boundary start;
+
+ /* Boundary just after the location ends. */
+ boundary end;
+
+} location;
+
+#define GRAM_LTYPE location
+
+#define EMPTY_LOCATION_INIT {{NULL, 0, 0}, {NULL, 0, 0}}
+extern location const empty_location;
+
+/* Set *LOC and adjust scanner cursor to account for token TOKEN of
+ size SIZE. */
+void location_compute (location *loc,
+ boundary *cur, char const *token, size_t size);
+
+/* Print location to file. Return number of actually printed
+ characters. */
+unsigned location_print (FILE *out, location loc);
+
+/* Return -1, 0, 1, depending whether a is before, equal, or
+ after b. */
+static inline int
+location_cmp (location a, location b)
+{
+ int res = boundary_cmp (a.start, b.start);
+ if (!res)
+ res = boundary_cmp (a.end, b.end);
+ return res;
+}
+
+/* LOC_STR must be formatted as `file:line.column', it will be modified. */
+void boundary_set_from_string (boundary *bound, char *loc_str);
+
+#endif /* ! defined LOCATION_H_ */