json.h: Add t_byte and t_ubyte to json_type.

This is to allow the existing practice of using unsigned char
fields in satellite_t and meas_t.  Those existing uses are
overflowing their fields.

1 files changed, 9 insertions, 2 deletions

diff --git a/json.h b/json.h
index c2bfc62b..19682e47 100644
--- a/json.h
+++ b/json.h
@@ -1,18 +1,25 @@
 /* Structures for JSON parsing using only fixed-extent memory
  *
- * This file is Copyright (c) 2010 by the GPSD project
+ * This file is Copyright (c) 2010-2019 by the GPSD project
  * SPDX-License-Identifier: BSD-2-clause
  */
 
 #include <stdbool.h>
 #include <ctype.h>
 
+/* the json_type is the type of the C variable the JSON
+ * value gets placed in.  It is NOT the JSON type as used
+ * in the JSON standard.  But it does partly specify how
+ * the JSON value is decoded.
+ *
+ * For example a t_character must be in quotes, but a t_byte
+ * is a bare number. */
 typedef enum {t_integer, t_uinteger, t_real,
 	      t_string, t_boolean, t_character,
 	      t_time,
 	      t_object, t_structobject, t_array,
 	      t_check, t_ignore,
-	      t_short, t_ushort}
+	      t_short, t_ushort, t_byte, t_ubyte}
     json_type;
 
 struct json_enum_t {