Imports name this capability’s declared dependencies, which fune builds next to it in your project; each one links to its page.
use std::collections::HashSet;
use super::funejson::Value; ← the fune runtime: the JSON value the test vectors use; fune build keeps it only where a signature takes one
use super::todo_item::Todo; ← from todo.item ^1.0.0 · built alongside by fune
use super::todo_item_validate_todo::{todos_from_value, todos_to_value};
/// Manual order: order ascending, ties by position (sort_by_key is stable).
fn in_manual_order(todos: &[Todo], which: &str) -> Vec<Todo> {
let mut seen: HashSet<&str> = HashSet::new();
for todo in todos {
if !seen.insert(todo.id.as_str()) {
panic!("duplicate id \"{}\" in the {} list", todo.id, which);
}
}
let mut sorted = todos.to_vec();
sorted.sort_by_key(|todo| todo.order);
sorted
}
/// Merge by id: a todo in both lists is taken from `incoming`, in the place
/// the current one had; todos only in `incoming` follow in their own manual
/// order. The result is in manual order, renumbered 0 to n-1.
///
/// # Panics
/// On an id that appears twice in either list.
pub fn merge_todos(current: &[Todo], incoming: &[Todo]) -> Vec<Todo> {
let mine = in_manual_order(current, "current");
let theirs = in_manual_order(incoming, "incoming");
let kept: HashSet<&str> = mine.iter().map(|todo| todo.id.as_str()).collect();
let mut merged: Vec<Todo> = mine
.iter()
.map(|todo| theirs.iter().find(|t| t.id == todo.id).unwrap_or(todo).clone())
.collect();
merged.extend(theirs.iter().filter(|todo| !kept.contains(todo.id.as_str())).cloned());
for (order, todo) in merged.iter_mut().enumerate() {
todo.order = order as i64;
}
merged
}
pub fn fune_vector(args: &[Value]) -> Value {
todos_to_value(&merge_todos(&todos_from_value(&args[0]), &todos_from_value(&args[1])))
}