Refactor: Migrate to clap for CLI argument parsing

The project now uses the `clap` crate for handling command-line
arguments, replacing the previous manual parsing approach. This includes
adding `clap` as a dependency and creating a `Cli` struct to define the
command-line interface. The `main` function has been updated to parse
these arguments and handle file input or direct script evaluation.

Cargo.lock

@@ -2,14 +2,6 @@
 # It is not intended for manual editing.
 version = 4
 
-[[package]]
-name = "Ast"
-version = "0.1.0"
-dependencies = [
- "eframe",
- "lazy_static",
-]
-
 [[package]]
 name = "ab_glyph"
 version = "0.2.32"
@@ -171,6 +163,56 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "anstream"
+version = "0.6.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43d5b281e737544384e969a5ccad3f1cdd24b48086a0fc1b2a5262a26b8f4f4a"
+dependencies = [
+ "anstyle",
+ "anstyle-parse",
+ "anstyle-query",
+ "anstyle-wincon",
+ "colorchoice",
+ "is_terminal_polyfill",
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle"
+version = "1.0.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5192cca8006f1fd4f7237516f40fa183bb07f8fbdfedaa0036de5ea9b0b45e78"
+
+[[package]]
+name = "anstyle-parse"
+version = "0.2.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e7644824f0aa2c7b9384579234ef10eb7efb6a0deb83f9630a49594dd9c15c2"
+dependencies = [
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle-query"
+version = "1.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
+dependencies = [
+ "windows-sys 0.61.2",
+]
+
+[[package]]
+name = "anstyle-wincon"
+version = "3.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
+dependencies = [
+ "anstyle",
+ "once_cell_polyfill",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "anyhow"
 version = "1.0.101"
@@ -600,6 +642,46 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "clap"
+version = "4.5.59"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c5caf74d17c3aec5495110c34cc3f78644bfa89af6c8993ed4de2790e49b6499"
+dependencies = [
+ "clap_builder",
+ "clap_derive",
+]
+
+[[package]]
+name = "clap_builder"
+version = "4.5.59"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "370daa45065b80218950227371916a1633217ae42b2715b2287b606dcd618e24"
+dependencies = [
+ "anstream",
+ "anstyle",
+ "clap_lex",
+ "strsim",
+]
+
+[[package]]
+name = "clap_derive"
+version = "4.5.55"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a92793da1a46a5f2a02a6f4c46c6496b28c43638adea8306fcb0caa1634f24e5"
+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "clap_lex"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a822ea5bc7590f9d40f1ba12c0dc3c2760f3482c6984db1573ad11031420831"
+
 [[package]]
 name = "clipboard-win"
 version = "5.4.1"
@@ -620,6 +702,12 @@ dependencies = [
  "unicode-width",
 ]
 
+[[package]]
+name = "colorchoice"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b05b61dc5112cbb17e4b6cd61790d9845d13888356391624cbe7e41efeac1e75"
+
 [[package]]
 name = "combine"
 version = "4.6.7"
@@ -1526,6 +1614,12 @@ dependencies = [
  "serde_core",
 ]
 
+[[package]]
+name = "is_terminal_polyfill"
+version = "1.70.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a6cb138bb79a146c1bd460005623e142ef0181e3d0219cb493e02f7d08a35695"
+
 [[package]]
 name = "itoa"
 version = "1.0.17"
@@ -1743,6 +1837,15 @@ dependencies = [
  "pxfm",
 ]
 
+[[package]]
+name = "myc"
+version = "0.1.0"
+dependencies = [
+ "clap",
+ "eframe",
+ "lazy_static",
+]
+
 [[package]]
 name = "naga"
 version = "27.0.3"
@@ -2123,6 +2226,12 @@ version = "1.21.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
 
+[[package]]
+name = "once_cell_polyfill"
+version = "1.70.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "384b8ab6d37215f3c5301a95a4accb5d64aa607f1fcb26a11b5303878451b4fe"
+
 [[package]]
 name = "orbclient"
 version = "0.3.50"
@@ -2701,6 +2810,12 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6637bab7722d379c8b41ba849228d680cc12d0a45ba1fa2b48f2a30577a06731"
 
+[[package]]
+name = "strsim"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
+
 [[package]]
 name = "syn"
 version = "2.0.116"
@@ -2964,6 +3079,12 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6c140620e7ffbb22c2dee59cafe6084a59b5ffc27a8859a5f0d494b5d52b6be"
 
+[[package]]
+name = "utf8parse"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
+
 [[package]]
 name = "uuid"
 version = "1.21.0"

Cargo.toml

@@ -1,8 +1,9 @@
 [package]
-name = "Ast"
+name = "myc"
 version = "0.1.0"
 edition = "2024"
 
 [dependencies]
 eframe = "0.33.3"
 lazy_static = "1.4.0"
+clap = { version = "4.5", features = ["derive"] }

src/bin/ast.rs

@@ -0,0 +1,45 @@
+use myc::ast::environment::Environment;
+use clap::Parser;
+use std::fs;
+use std::path::PathBuf;
+
+#[derive(Parser)]
+#[command(author, version, about = "MYC AST Compiler CLI", long_about = None)]
+struct Cli {
+    /// The script file to run
+    #[arg(value_name = "FILE")]
+    file: Option<PathBuf>,
+
+    /// Run a script string directly
+    #[arg(short, long)]
+    eval: Option<String>,
+}
+
+fn main() {
+    let cli = Cli::parse();
+    let env = Environment::new();
+
+    if let Some(script_str) = cli.eval {
+        execute(&env, &script_str);
+    } else if let Some(file_path) = cli.file {
+        match fs::read_to_string(&file_path) {
+            Ok(content) => execute(&env, &content),
+            Err(e) => {
+                eprintln!("Error reading file {:?}: {}", file_path, e);
+                std::process::exit(1);
+            }
+        }
+    } else {
+        println!("MYC AST Compiler CLI. Use --help for usage.");
+    }
+}
+
+fn execute(env: &Environment, source: &str) {
+    match env.run_script(source) {
+        Ok(result) => println!("{}", result),
+        Err(e) => {
+            eprintln!("Error: {}", e);
+            std::process::exit(1);
+        }
+    }
+}

src/lib.rs

@@ -0,0 +1,4 @@
+pub mod ast;
+
+#[cfg(test)]
+mod integration_test;

src/main.rs

@@ -1,9 +1,5 @@
 use eframe::egui;
-use crate::ast::environment::Environment;
+use myc::ast::environment::Environment;
-
-pub mod ast;
-#[cfg(test)]
-mod integration_test;
 
 fn main() -> eframe::Result {
     let options = eframe::NativeOptions {