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//! A set of utils methods to reuse on other abstraction levels
use itertools::Itertools;
use crate::{ast, match_ast, AstNode, SyntaxKind};
pub fn path_to_string_stripping_turbo_fish(path: &ast::Path) -> String {
path.syntax()
.children()
.filter_map(|node| {
match_ast! {
match node {
ast::PathSegment(it) => {
Some(it.name_ref()?.to_string())
},
ast::Path(it) => {
Some(path_to_string_stripping_turbo_fish(&it))
},
_ => None,
}
}
})
.join("::")
}
pub fn is_raw_identifier(name: &str) -> bool {
let is_keyword = SyntaxKind::from_keyword(name).is_some();
is_keyword && !matches!(name, "self" | "crate" | "super" | "Self")
}
#[cfg(test)]
mod tests {
use super::path_to_string_stripping_turbo_fish;
use crate::ast::make;
#[test]
fn turbofishes_are_stripped() {
assert_eq!("Vec", path_to_string_stripping_turbo_fish(&make::path_from_text("Vec::<i32>")),);
assert_eq!(
"Vec::new",
path_to_string_stripping_turbo_fish(&make::path_from_text("Vec::<i32>::new")),
);
assert_eq!(
"Vec::new",
path_to_string_stripping_turbo_fish(&make::path_from_text("Vec::new()")),
);
}
}
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