repo: better error handling

fixup repo err handling

tools/Cargo.lock

@@ -230,6 +230,26 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "thiserror"
+version = "2.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d452f284b73e6d76dd36758a0c8684b1d5be31f92b89d07fd5822175732206fc"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "2.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26afc1baea8a989337eeb52b6e72a039780ce45c3edfcc9c5b9d112feeb173c2"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "toml"
 version = "0.8.19"
@@ -271,6 +291,7 @@ dependencies = [
  "anyhow",
  "clap",
  "serde",
+ "thiserror",
  "toml",
  "uuid",
 ]

tools/Cargo.toml

@@ -7,5 +7,6 @@ edition = "2021"
 anyhow = "1.0.95"
 clap = { version = "4.5.26", features = ["derive"] }
 serde = { version = "1.0.217", features = ["derive"] }
+thiserror = "2.0.11"
 toml = "0.8.19"
 uuid = { version = "1.12.1", features = ["std", "v4" ] }

tools/src/bin/parser/main.rs

@@ -15,7 +15,7 @@ struct Args {
 
 fn main() -> anyhow::Result<()> {
     let args = Args::parse();
-    let repo = Repo::new(&args.repo);
+    let repo = Repo::new(&args.repo).unwrap();
     repo.compile(&args.target)?;
     Ok(())
 }

tools/src/lib.rs

@@ -3,3 +3,4 @@ pub use recipe::Recipe;
 
 pub mod repo;
 pub use repo::Repo;
+pub use repo::RepoLoadError;

tools/src/repo.rs

@@ -9,14 +9,20 @@ pub struct Repo {
     recipes: std::collections::HashMap<String, Recipe>,
 }
 
+#[derive(Debug, thiserror::Error)]
+pub enum RepoLoadError {
+    #[error("io error: {0}")]
+    StdIoError(#[from] std::io::Error),
+}
+
 impl Repo {
-    pub fn new(path: &str) -> Self {
+    pub fn new(path: &str) -> Result<Self, RepoLoadError> {
         let mut repo = Self {
             path: std::string::String::from(path),
             recipes: std::collections::HashMap::<String, Recipe>::new(),
         };
-        repo.add_dir(path).unwrap();
+        repo.add_dir(path)?;
-        repo
+        Ok(repo)
     }
 
     pub fn get_recipe(self: &Self, recipe_name: &str) -> Option<&Recipe> {
@@ -51,9 +57,9 @@ impl Repo {
 }
 
 impl Repo {
-    fn add_dir(self: &mut Self, path: &str) -> anyhow::Result<()> {
+    fn add_dir(self: &mut Self, path: &str) -> Result<(), RepoLoadError> {
         // println!("reading Recipes from {path}");
-        let dir_entries = std::fs::read_dir(path).unwrap();
+        let dir_entries = std::fs::read_dir(path)?;
         for dir_entry in dir_entries {
             let dir_entry = dir_entry.unwrap();
             let file_type = dir_entry.file_type().unwrap();