Auto generate argument enums

The argparse module we use for parsing events expects an enum in order
to convey what subcommand has been supplied as an argument. Such an enum
also needs to implement str::FromStr and, preferably, fmt::Display.
Manually writing down those definitions is error-prone, tedious, and
adds no value -- only lines of code.
As it turns out the proper definitions can be generated with relative
easy with a declarative macro, making the code much more concise. Hence,
with this change we use a newly introduced macro for generating those
enums.

1 files changed, 2 insertions, 0 deletions

diff --git a/nitrocli/src/main.rs b/nitrocli/src/main.rs
index a9e31f8..9f56f75 100644
--- a/nitrocli/src/main.rs
+++ b/nitrocli/src/main.rs
@@ -70,6 +70,8 @@
 
 #[macro_use]
 mod redefine;
+#[macro_use]
+mod arg_util;
 
 mod args;
 mod commands;