Simplify by creating struct roff_node syntax tree nodes for tbl(7)

right from roff_parseln() rather than delegating to read.c,
similar to what i just did for eqn(7).

The interface function roff_span() becomes obsolete and is deleted,
the former interface function roff_addtbl() becomes static,
the interface functions tbl_read() and tbl_cdata() become void,
and minus twelve linus of code.

No functional change.

1 files changed, 3 insertions, 5 deletions

diff --git a/tbl_data.c b/tbl_data.c
index 32a169d7..01bc62d2 100644
--- a/tbl_data.c
+++ b/tbl_data.c
@@ -128,7 +128,7 @@ getdata(struct tbl_node *tbl, struct tbl_span *dp,
 		    tbl->parse, ln, sv, dat->string);
 }
 
-int
+void
 tbl_cdata(struct tbl_node *tbl, int ln, const char *p, int pos)
 {
 	struct tbl_dat	*dat;
@@ -143,10 +143,10 @@ tbl_cdata(struct tbl_node *tbl, int ln, const char *p, int pos)
 			pos++;
 			while (p[pos] != '\0')
 				getdata(tbl, tbl->last_span, ln, p, &pos);
-			return 1;
+			return;
 		} else if (p[pos] == '\0') {
 			tbl->part = TBL_PART_DATA;
-			return 1;
+			return;
 		}
 
 		/* Fallthrough: T} is part of a word. */
@@ -166,8 +166,6 @@ tbl_cdata(struct tbl_node *tbl, int ln, const char *p, int pos)
 	if (dat->layout->pos == TBL_CELL_DOWN)
 		mandoc_msg(MANDOCERR_TBLDATA_SPAN, tbl->parse,
 		    ln, pos, dat->string);
-
-	return 0;
 }
 
 static struct tbl_span *