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|
use syn::Item;
use crate::pattern_analyzer::{AnalyzeItem, AnalyzePattern};
/// Match structs annotated with `#[dispatcher_clap]`, extracting the entry type name (i.e., the struct name).
///
/// Covers the following forms:
/// - `#[dispatcher_clap] struct EntryGreet { ... }`
/// - `#[dispatcher_clap] #[command(...)] struct EntryGreet { ... }`
pub struct DispatcherClapPattern;
impl AnalyzePattern for DispatcherClapPattern {
fn contains(&self, content: &str) -> bool {
content.contains("dispatcher_clap(")
}
fn analyze(&self, content: &str) -> Vec<AnalyzeItem> {
let Ok(syntax) = syn::parse_file(content) else {
return Vec::new();
};
let mut items = Vec::new();
for item in &syntax.items {
match item {
Item::Struct(s) if has_attr(&s.attrs, "dispatcher_clap") => {
items.push(AnalyzeItem {
module: String::new(),
item_name: s.ident.to_string(),
});
}
Item::Mod(item_mod) => {
if let Some((_, nested)) = &item_mod.content {
for n in nested {
if let Item::Struct(s) = n
&& has_attr(&s.attrs, "dispatcher_clap") {
items.push(AnalyzeItem {
module: item_mod.ident.to_string(),
item_name: s.ident.to_string(),
});
}
}
}
}
_ => {}
}
}
items
}
}
fn has_attr(attrs: &[syn::Attribute], name: &str) -> bool {
attrs.iter().any(|a| {
a.path()
.segments
.last()
.is_some_and(|s| s.ident == name)
})
}
|
