add pretty-print to mers cli

mers/Cargo.toml

@@ -14,3 +14,4 @@ repository = "https://github.com/Dummi26/mers"
 mers_lib = "0.6.0"
 # mers_lib = { path = "../mers_lib" }
 clap = { version = "4.3.19", features = ["derive"] }
+colored = "2.1.0"

mers/src/main.rs

@@ -3,6 +3,7 @@ use mers_lib::prelude_compile::*;
 use std::{path::PathBuf, process::exit, sync::Arc};
 
 mod cfg_globals;
+mod pretty_print;
 
 #[derive(Parser)]
 struct Args {
@@ -34,6 +35,11 @@ enum Command {
         #[command(subcommand)]
         source: From,
     },
+    /// Add syntax highlighting to the code
+    PrettyPrint {
+        #[command(subcommand)]
+        source: From,
+    },
 }
 #[derive(Subcommand, Clone)]
 enum From {
@@ -145,5 +151,8 @@ fn main() {
                 }
             }
         }
+        Command::PrettyPrint { source } => {
+            pretty_print::pretty_print(get_source(source));
+        }
     }
 }

mers/t.mers

@@ -1,3 +1,7 @@
-print_sum := iter -> iter.sum.println
-
-(1, 2, 3, "a").print_sum
+// hello
+if some_condition {
+  { ref: &my_var }
+} else {
+  [Int] (by_value)
+}
+// end