Rewrite everything in rust

hencelisp/.gitignore

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+/target

hencelisp/Cargo.toml

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+[package]
+name = "hencelisp"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+name = "hencelisp"
+path = "src/lib/lib.rs"
+
+[[bin]]
+name = "hencelisp"
+path = "src/bin/main.rs"
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+hence = { path = "../hence" }
+clap = { version = "3.2.12", features = ["derive"] }

hencelisp/src/bin/main.rs

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+use clap::{Parser, Subcommand};
+use hencelisp::*;
+use std::fs;
+
+#[derive(Debug, Parser)]
+#[clap(author, version, about, long_about = None)]
+struct Cli {
+    #[clap(subcommand)]
+    commands: Commands,
+}
+
+#[derive(Debug, Subcommand)]
+enum Commands {
+    #[clap(about = "Lexes source code and outputs tokens")]
+    Lex {
+        #[clap(value_parser)]
+        src: String,
+    },
+}
+
+fn main() {
+    let args = Cli::parse();
+    match args.commands {
+        Commands::Lex { src } => {
+            let source = fs::read_to_string(src).unwrap();
+            println!("{source}");
+        }
+    }
+}

hencelisp/src/lib/lexer.rs

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+pub fn lex(source: String) {}

hencelisp/src/lib/lib.rs

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+pub mod lexer;

hencelisp/src/main.rs

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+fn main() {
+    println!("Hello, world!");
+}