2024-10-10

core/sim/sim_3_01/runs.h

@@ -0,0 +1,38 @@
+/*	This file is part of the software similarity tester SIM.
+	Written by Dick Grune, Vrije Universiteit, Amsterdam.
+	$Id: runs.h,v 1.13 2016-07-31 18:55:44 dick Exp $
+*/
+
+/*	Although all other segments of data in this program are described by
+	giving the position of the first in the segment and that of the
+	first not in the segment (so the size is the difference of the two),
+	a `chunk' is given by first and last. This is done because later on we
+	are interested in the actual position of the last token of it, and
+	the position of the first token not in the segment gives no
+	indication about that.
+*/
+
+struct chunk {
+	/* a chunk of text */
+	const struct text *ch_text;	/* pointer to the file */
+	struct position ch_first;	/* first in chunk */
+	struct position ch_last;	/* last in chunk */
+};
+
+struct run {				/* a 'run' of coincident tokens */
+	struct run *rn_next;
+	struct chunk rn_chunk0;		/* chunk in left file */
+	struct chunk rn_chunk1;		/* chunk in right file */
+	size_t rn_size;
+};
+
+extern void add_to_runs(
+    struct text *txt0, size_t i0, struct text *txt1, size_t i1,
+    size_t size);
+extern struct run *sorted_runs(void);
+extern struct run *unsorted_runs(void);
+extern void discard_runs(void);
+
+#ifdef	DB_RUN
+extern void db_run_info(const char *msg, const struct run *run, int lines_too);
+#endif	/* DB_RUN */