feat: added version display

Author: Zffu

compiler/compiler_main/build.rs

@@ -0,0 +1,12 @@
+use std::process::Command;
+
+fn main() {
+    let out = Command::new("git")
+        .args(["rev-parse", "HEAD"])
+        .output()
+        .unwrap();
+
+    let git_hash = String::from_utf8(out.stdout).unwrap();
+
+    println!("cargo:rustc-env=GIT_HASH={}", git_hash.trim());
+}

compiler/compiler_main/src/main.rs

@@ -1,9 +1,21 @@
 use clap::Parser;
 
-use crate::cli::{CLICommand, Cli};
+use crate::{
+    cli::{CLICommand, Cli},
+    version::{GIT_HASH, VERSION},
+};
 
 pub mod cli;
+pub mod version;
 
 fn main() {
     let cli = Cli::parse();
+
+    match cli.command {
+        CLICommand::Version => {
+            println!("Quickfall v{} (commit {})", VERSION, GIT_HASH);
+        }
+
+        _ => todo!(),
+    }
 }

compiler/compiler_main/src/version.rs

@@ -0,0 +1,2 @@
+pub const GIT_HASH: &str = env!("GIT_HASH");
+pub const VERSION: &str = env!("CARGO_PKG_VERSION");