[PATCH v3 09/22] libtracefs: Add line number and index to expr structure

[Steven Rostedt]

From: "Steven Rostedt (VMware)" <rostedt@xxxxxxxxxxx>

In order to have better error messages, record the line number and index
when an expr structure is created. Then this can be used to show where in
the SQL sequence a problem was found if the building of the synth event
has issues.

Signed-off-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>
---
 src/tracefs-sqlhist.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/tracefs-sqlhist.c b/src/tracefs-sqlhist.c
index 70bcab14cb27..2e301e024d13 100644
--- a/src/tracefs-sqlhist.c
+++ b/src/tracefs-sqlhist.c
@@ -73,6 +73,8 @@ struct expr {
 	struct expr		*free_list;
 	struct expr		*next;
 	enum expr_type		type;
+	int			line;
+	int			idx;
 	union {
 		struct field	field;
 		struct filter	filter;
@@ -301,6 +303,8 @@ static void *create_expr(struct sqlhist_bison *sb,
 	sb->table->exprs = expr;
 
 	expr->type = type;
+	expr->line = sb->line_no;
+	expr->idx = sb->line_idx;
 
 	switch (type) {
 	case EXPR_FIELD:	return &expr->field;
-- 
2.30.2