Closed jphaupt closed 3 months ago
There are various ways to check if a variable is in the file. The json_file
type has a .in
operator, so you can do stuff like this:
if (.not. ('x0' .in. f)) error stop 'x0 not found'
Some of the other routines have a found
optional argument, so you could check if a variable was found, etc.
To check if a variable is there but not recognized, I think you'd just have to iterate over all the keys and compare them to the list and flag the ones not recognized.
We are using json-fortran as an input file reader for one of our libraries. Perhaps this is outside the scope of your project, but is it possible to check if a keyword is invalid/unrecognised, or would this have to be done separately? E.g. check if data present in the json was not read by the program.
I guess this would involve reading each keyword present in the json and comparing it to all possible keywords (which would be done outside json-fortran, or given as input), and failing if not.
I just want some error checking, e.g. say
x0
has a default value of0
if it is not found, but the user erroneously inputs"z0": 5
. At the moment, the code would simply ignorez0
(and setx0=0
which is not what the user actually wanted), but I would like it tostop
.