Impl description, async issue

.changepacks/changepack_log_z-BQF0lAvHD8CkNVDl4dG.json

@@ -0,0 +1 @@
+{"changes":{"crates/vespera/Cargo.toml":"Patch","crates/vespera_macro/Cargo.toml":"Patch","crates/vespera_core/Cargo.toml":"Patch"},"note":"Implement description, async error","date":"2025-12-31T07:14:07.530788400Z"}

.claude/settings.local.json

@@ -0,0 +1,7 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(cargo test:*)"
+    ]
+  }
+}

README.md

@@ -299,6 +299,73 @@ pub async fn get_user(id: u32) -> Json<User> {
 }
 ```
 
+### Tags and Description
+
+You can add tags and descriptions to your routes for better OpenAPI documentation organization.
+
+#### Tags
+
+Use the `tags` parameter to group your routes in the OpenAPI documentation:
+
+```rust
+#[vespera::route(get, tags = ["users"])]
+pub async fn list_users() -> Json<Vec<User>> {
+    // ...
+}
+
+#[vespera::route(post, tags = ["users", "admin"])]
+pub async fn create_user(Json(user): Json<User>) -> Json<User> {
+    // ...
+}
+```
+
+#### Description
+
+There are two ways to add descriptions to your routes:
+
+**1. Using doc comments (recommended):**
+
+Doc comments (`///`) are automatically extracted and used as the route description in OpenAPI:
+
+```rust
+/// Get all users from the database
+///
+/// Returns a list of all registered users.
+#[vespera::route(get)]
+pub async fn list_users() -> Json<Vec<User>> {
+    // ...
+}
+```
+
+**2. Using the `description` parameter:**
+
+You can also explicitly set the description using the `description` parameter. This takes priority over doc comments:
+
+```rust
+/// This doc comment will be ignored
+#[vespera::route(get, description = "Custom description for OpenAPI")]
+pub async fn list_users() -> Json<Vec<User>> {
+    // ...
+}
+```
+
+#### Combined Example
+
+```rust
+/// Get user by ID
+///
+/// Retrieves a specific user by their unique identifier.
+#[vespera::route(get, path = "/{id}", tags = ["users"])]
+pub async fn get_user(Path(id): Path<u32>) -> Json<User> {
+    // ...
+}
+
+#[vespera::route(post, tags = ["users", "admin"], description = "Create a new user account")]
+pub async fn create_user(Json(user): Json<User>) -> Json<User> {
+    // ...
+}
+```
+
 ### Supported HTTP Methods
 
 - `GET`

SKILL.md

@@ -67,6 +67,42 @@ pub async fn create_user(Json(user): Json<User>) -> Json<User> {
 }
 ```
 
+### 4. Tags and Description
+
+Add tags to group routes and descriptions for OpenAPI documentation.
+
+**Tags:** Use the `tags` parameter to group routes.
+
+```rust
+#[vespera::route(get, tags = ["users"])]
+pub async fn list_users() -> Json<Vec<User>> { ... }
+
+#[vespera::route(post, tags = ["users", "admin"])]
+pub async fn create_user(Json(user): Json<User>) -> Json<User> { ... }
+```
+
+**Description:** Two ways to add descriptions:
+
+1. **Doc comments (recommended):** Automatically extracted from `///` comments.
+```rust
+/// Get all users from the database
+#[vespera::route(get)]
+pub async fn list_users() -> Json<Vec<User>> { ... }
+```
+
+2. **Explicit `description` parameter:** Takes priority over doc comments.
+```rust
+#[vespera::route(get, description = "Custom description")]
+pub async fn list_users() -> Json<Vec<User>> { ... }
+```
+
+**Combined example:**
+```rust
+/// Get user by ID
+#[vespera::route(get, path = "/{id}", tags = ["users"])]
+pub async fn get_user(Path(id): Path<u32>) -> Json<User> { ... }
+```
+
 ### 5. Error Handling
 Vespera supports `Result<T, E>` return types. It automatically documents both the success capability (200 OK) and the error responses in the OpenAPI spec.
 

crates/vespera_macro/src/args.rs

@@ -3,6 +3,7 @@ pub struct RouteArgs {
     pub path: Option<syn::LitStr>,
     pub error_status: Option<syn::ExprArray>,
     pub tags: Option<syn::ExprArray>,
+    pub description: Option<syn::LitStr>,
 }
 
 impl syn::parse::Parse for RouteArgs {
@@ -11,6 +12,7 @@ impl syn::parse::Parse for RouteArgs {
         let mut path: Option<syn::LitStr> = None;
         let mut error_status: Option<syn::ExprArray> = None;
         let mut tags: Option<syn::ExprArray> = None;
+        let mut description: Option<syn::LitStr> = None;
 
         // Parse comma-separated list of arguments
         while !input.is_empty() {
@@ -39,6 +41,11 @@ impl syn::parse::Parse for RouteArgs {
                         let array: syn::ExprArray = input.parse()?;
                         tags = Some(array);
                     }
+                    "description" => {
+                        input.parse::<syn::Token![=]>()?;
+                        let lit: syn::LitStr = input.parse()?;
+                        description = Some(lit);
+                    }
                     _ => {
                         return Err(lookahead.error());
                     }
@@ -60,6 +67,7 @@ impl syn::parse::Parse for RouteArgs {
             path,
             error_status,
             tags,
+            description,
         })
     }
 }

crates/vespera_macro/src/collector.rs

@@ -2,7 +2,7 @@
 
 use crate::file_utils::{collect_files, file_to_segments};
 use crate::metadata::{CollectedMetadata, RouteMetadata};
-use crate::route::extract_route_info;
+use crate::route::{extract_doc_comment, extract_route_info};
 use anyhow::{Context, Result};
 use std::path::Path;
 use syn::Item;
@@ -61,6 +61,12 @@ pub fn collect_metadata(folder_path: &Path, folder_name: &str) -> Result<Collect
                 };
                 let route_path = route_path.replace('_', "-");
 
+                // Description priority: route attribute > doc comment
+                let description = route_info
+                    .description
+                    .clone()
+                    .or_else(|| extract_doc_comment(&fn_item.attrs));
+
                 metadata.routes.push(RouteMetadata {
                     method: route_info.method,
                     path: route_path,
@@ -70,6 +76,7 @@ pub fn collect_metadata(folder_path: &Path, folder_name: &str) -> Result<Collect
                     signature: quote::quote!(#fn_item).to_string(),
                     error_status: route_info.error_status.clone(),
                     tags: route_info.tags.clone(),
+                    description,
                 });
             }
         }