try_user_parser : lexcode list -> preterm * lexcode list
- SYNOPSIS
-
Try all user parsing functions.
- DESCRIPTION
-
HOL Light allows user parsing functions to be installed, and will try them on
all terms during parsing before the usual parsers. The call
try_user_parser l attempts to parse the list of tokens l using all the user
parsers, taking the results from whichever one succeeds first.
- FAILURE CONDITIONS
-
Fails if all user parsers fail.
- SEE ALSO
-
delete_parser, install_parser, installed_parsers.