nyx/src/dynamic/framework/adapters/rust_rocket.rs

141 lines
4.6 KiB
Rust

//! Rocket [`super::super::FrameworkAdapter`] (Phase 17 — Track L.15).
//!
//! Recognises rocket's `#[get("/path")]` / `#[post("/path")]`
//! attribute macros plus the `routes![handler]` macro:
//!
//! ```rust
//! #[get("/users/<id>")]
//! fn show(id: String) -> String { id }
//!
//! #[launch]
//! fn rocket() -> _ { rocket::build().mount("/", routes![show]) }
//! ```
//!
//! Rocket's placeholder syntax `<id>` plus brace syntax `<id..>`
//! resolve via [`super::rust_routes::extract_rust_path_placeholders`].
//! The adapter shares the attribute-walk path with actix; the only
//! difference is the source-import discriminator.
use crate::dynamic::framework::{FrameworkAdapter, FrameworkBinding, RouteShape};
use crate::evidence::EntryKind;
use crate::summary::FuncSummary;
use crate::symbol::Lang;
use tree_sitter::Node;
use super::rust_routes::{
bind_rust_path_params, collect_rust_middleware, find_method_attribute, find_rust_function,
rust_formal_names, source_imports_rocket,
};
pub struct RustRocketAdapter;
const ADAPTER_NAME: &str = "rust-rocket";
impl FrameworkAdapter for RustRocketAdapter {
fn name(&self) -> &'static str {
ADAPTER_NAME
}
fn lang(&self) -> Lang {
Lang::Rust
}
fn detect(
&self,
summary: &FuncSummary,
ast: Node<'_>,
file_bytes: &[u8],
) -> Option<FrameworkBinding> {
if !source_imports_rocket(file_bytes) {
return None;
}
let func = find_rust_function(ast, file_bytes, &summary.name)?;
let (method, path) = find_method_attribute(func, file_bytes)?;
let formals = rust_formal_names(func, file_bytes);
let request_params = bind_rust_path_params(&formals, &path);
let middleware = collect_rust_middleware(ast, file_bytes);
Some(FrameworkBinding {
adapter: ADAPTER_NAME.to_owned(),
kind: EntryKind::HttpRoute,
route: Some(RouteShape::single(method, path)),
request_params,
response_writer: None,
middleware,
})
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::dynamic::framework::{HttpMethod, ParamSource};
fn parse(src: &[u8]) -> tree_sitter::Tree {
let mut parser = tree_sitter::Parser::new();
let lang = tree_sitter::Language::from(tree_sitter_rust::LANGUAGE);
parser.set_language(&lang).unwrap();
parser.parse(src, None).unwrap()
}
fn summary(name: &str) -> FuncSummary {
FuncSummary {
name: name.into(),
lang: "rust".into(),
..Default::default()
}
}
#[test]
fn fires_on_get_with_angle_placeholder() {
let src: &[u8] =
b"use rocket::get;\n#[get(\"/u/<id>\")]\nfn show(id: String) -> String { id }\n";
let tree = parse(src);
let binding = RustRocketAdapter
.detect(&summary("show"), tree.root_node(), src)
.expect("binding");
assert_eq!(binding.adapter, "rust-rocket");
let route = binding.route.expect("route");
assert_eq!(route.method, HttpMethod::GET);
assert_eq!(route.path, "/u/<id>");
let id = binding
.request_params
.iter()
.find(|p| p.name == "id")
.unwrap();
assert!(matches!(id.source, ParamSource::PathSegment(_)));
}
#[test]
fn fires_on_post_with_data_param() {
let src: &[u8] =
b"use rocket::post;\n#[post(\"/save\", data = \"<body>\")]\nfn save(body: String) {}\n";
let tree = parse(src);
let binding = RustRocketAdapter
.detect(&summary("save"), tree.root_node(), src)
.expect("binding");
assert_eq!(binding.route.unwrap().method, HttpMethod::POST);
}
#[test]
fn populates_middleware_from_attach_fairing() {
let src: &[u8] = b"use rocket::get;\n#[get(\"/u\")]\nfn show() -> &'static str { \"ok\" }\n\
#[launch]\nfn rocket() -> _ { rocket::build().attach(CsrfLayer).mount(\"/\", routes![show]) }\n";
let tree = parse(src);
let binding = RustRocketAdapter
.detect(&summary("show"), tree.root_node(), src)
.expect("binding");
assert_eq!(binding.middleware.len(), 1);
assert_eq!(binding.middleware[0].name, "CsrfLayer");
}
#[test]
fn skips_when_rocket_not_imported() {
let src: &[u8] = b"#[get(\"/u\")]\nfn show() {}\n";
let tree = parse(src);
assert!(
RustRocketAdapter
.detect(&summary("show"), tree.root_node(), src)
.is_none()
);
}
}