Start with Pest Parser

src/grammars/mblf.pest

@@ -0,0 +1 @@
+alpha = { 'a'..'z' | 'A'..'Z' }

src/main.rs

@@ -4,6 +4,17 @@ use std::io::Write;
 use anyhow::{Context, Result};
 use structopt::StructOpt;
 
+extern crate pest;
+#[macro_use]
+extern crate pest_derive;
+
+use pest::Parser;
+
+#[derive(Parser)]
+#[grammar = "grammars/mblf.pest"]
+struct MblfParser;
+
+
 #[derive(StructOpt)]
 struct Cli {
     #[structopt(parse(from_os_str))]
@@ -19,6 +30,12 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         .with_context(|| format!("could not read source file {:?}", args.input_file))?;
 
     let mut out = File::create(args.output_file)?;
+
+    let _pairs = MblfParser::parse(Rule::alpha, "a").unwrap();
+
+
+
+
     out.write_all(&content.as_bytes())?;
 
     out.sync_all()?;