Added runner stubs for running variations

src/grade.rs

@@ -0,0 +1,5 @@
+use std::path::{Path, PathBuf};
+
+pub fn grade(verbosity: u8, config_file: PathBuf, grade_config: Option<&Path>) {
+    println!("Grading!");
+}

src/main.rs

@@ -2,14 +2,22 @@ use std::path::PathBuf;
 
 use clap::{Parser, Subcommand};
 
+mod validate;
+mod run;
+mod grade;
+
 fn main() {
+    // get cli args
     let cli = Cli::parse();
 
-    let verbosity = get_verbosity(cli);
+    // parse the verbosity and eliminate the Option<>
+    let verbosity = get_verbosity(cli.verbosity);
 
-    println!("verbosity = {}", verbosity);
-
-    println!("Hello, world!");
+    match &cli.command {
+        Command::Validate => validate::validate(verbosity, cli.config_file),
+        Command::Run      => run::run(verbosity, cli.config_file),
+        Command::Grade    => grade::grade(verbosity, cli.config_file, cli.grading_conf.as_deref()),
+    }
 }
 
 // Initialize CLI arguments using clap
@@ -44,10 +52,10 @@ enum Command {
     Grade,
 }
 
-fn get_verbosity(cli: Cli) -> u8 {
+fn get_verbosity(verb: Option<u8>) -> u8 {
     // Check the user defined verbosity, if none, set to normal
     let verbosity: u8;
-    match cli.verbosity {
+    match verb {
         Some(x) => verbosity = x,
         None    => verbosity = 1,
     }

src/run.rs

@@ -0,0 +1,5 @@
+use std::path::PathBuf;
+
+pub fn run(verbosity: u8, config_file: PathBuf) {
+    println!("Running!");
+}

src/validate.rs

@@ -0,0 +1,5 @@
+use std::path::PathBuf;
+
+pub fn validate(verbosity: u8, config_file: PathBuf) {
+    println!("Validating");
+}