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|
use just_fmt::kebab_case;
/// Represents a command node, used to match user-input command paths.
///
/// The node consists of multiple parts, each separated by a dot (`.`), and automatically converted to kebab-case.
/// For example, the input string `"node.subnode"` will be converted to a node representation of `["node", "subnode"]`.
#[derive(Debug, Default)]
pub struct Node {
node: Vec<String>,
}
impl Node {
/// Append a new part to the node path.
#[must_use]
pub fn join(self, node: impl Into<String>) -> Node {
let mut new_node = self.node;
new_node.push(node.into());
Node { node: new_node }
}
}
impl From<&str> for Node {
fn from(s: &str) -> Self {
let node = s.split('.').map(|part| kebab_case!(part)).collect();
Node { node }
}
}
impl From<String> for Node {
fn from(s: String) -> Self {
let node = s.split('.').map(|part| kebab_case!(part)).collect();
Node { node }
}
}
impl PartialEq for Node {
fn eq(&self, other: &Self) -> bool {
self.node == other.node
}
}
impl Eq for Node {}
impl PartialOrd for Node {
fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
Some(self.cmp(other))
}
}
impl Ord for Node {
fn cmp(&self, other: &Self) -> std::cmp::Ordering {
self.node.cmp(&other.node)
}
}
impl std::fmt::Display for Node {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "{}", self.node.join("."))
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_node_from_single_str() {
let node = Node::from("hello");
assert_eq!(node.node, vec!["hello"]);
assert_eq!(node.to_string(), "hello");
}
#[test]
fn test_node_from_dotted_str() {
let node = Node::from("a.b.c");
assert_eq!(node.node, vec!["a", "b", "c"]);
assert_eq!(node.to_string(), "a.b.c");
}
#[test]
fn test_node_kebab_case_conversion() {
let node = Node::from("HelloWorld.FooBar");
assert_eq!(node.node, vec!["hello-world", "foo-bar"]);
}
#[test]
fn test_node_from_string() {
let s = String::from("x.y");
let node = Node::from(s);
assert_eq!(node.node, vec!["x", "y"]);
}
#[test]
fn test_node_join() {
let node = Node::from("base").join("sub");
assert_eq!(node.node, vec!["base", "sub"]);
}
#[test]
fn test_node_join_multiple() {
let node = Node::from("a").join("b").join("c");
assert_eq!(node.to_string(), "a.b.c");
}
#[test]
fn test_node_default_empty() {
let node = Node::default();
assert!(node.node.is_empty());
assert_eq!(node.to_string(), "");
}
#[test]
fn test_node_partial_eq() {
let a = Node::from("a.b");
let b = Node::from("a.b");
let c = Node::from("a.c");
assert_eq!(a, b);
assert_ne!(a, c);
}
#[test]
fn test_node_ord() {
let a = Node::from("a");
let b = Node::from("b");
assert!(a < b);
}
#[test]
fn test_node_join_appends_part() {
let node = Node::from("existing");
let joined = node.join("new-part");
assert_eq!(joined.to_string(), "existing.new-part");
}
}
|
