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|
use syn::Item;
use crate::pattern_analyzer::{AnalyzeItem, AnalyzePattern};
/// Matches `#[derive(Groupped)]` and `#[derive(GrouppedSerialize)]`.
///
/// Covers the forms:
/// - `#[derive(Groupped)] struct T { ... }`
/// - `#[derive(Groupped, Serialize, ...)] struct T { ... }`
/// - `#[derive(GrouppedSerialize)] struct T { ... }`
pub struct GrouppedDerivePattern;
impl AnalyzePattern for GrouppedDerivePattern {
fn contains(&self, content: &str) -> bool {
content.contains("Groupped")
}
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_groupped_derive(&s.attrs) {
items.push(AnalyzeItem {
module: String::new(),
item_name: s.ident.to_string(),
});
}
}
Item::Enum(e) => {
if has_groupped_derive(&e.attrs) {
items.push(AnalyzeItem {
module: String::new(),
item_name: e.ident.to_string(),
});
}
}
Item::Union(u) => {
if has_groupped_derive(&u.attrs) {
items.push(AnalyzeItem {
module: String::new(),
item_name: u.ident.to_string(),
});
}
}
Item::Mod(item_mod) => {
if let Some((_, nested)) = &item_mod.content {
for n in nested {
match n {
Item::Struct(s) if has_groupped_derive(&s.attrs) => {
items.push(AnalyzeItem {
module: item_mod.ident.to_string(),
item_name: s.ident.to_string(),
});
}
Item::Enum(e) if has_groupped_derive(&e.attrs) => {
items.push(AnalyzeItem {
module: item_mod.ident.to_string(),
item_name: e.ident.to_string(),
});
}
_ => {}
}
}
}
}
_ => {}
}
}
items
}
}
fn has_groupped_derive(attrs: &[syn::Attribute]) -> bool {
attrs.iter().any(|attr| {
if attr.path().is_ident("derive") {
attr.parse_args::<syn::MetaList>().ok().is_some_and(|meta| {
meta.path.segments.iter().any(|seg| {
let name = seg.ident.to_string();
name == "Groupped" || name == "GrouppedSerialize"
})
})
} else {
false
}
})
}
|
