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use std::cell::RefCell;
pub struct Entry<A,B> {
key: A,
value: B
}
pub struct alist<A,B> {
eq_fn: extern "Rust" fn(A,A) -> bool,
data: Box<RefCell<Vec<Entry<A,B>>>>,
}
pub fn alist_add<A:'static,B:'static>(lst: &alist<A,B>, k: A, v: B) {
let mut data = lst.data.borrow_mut();
(*data).push(Entry{key:k, value:v});
}
pub fn alist_get<A:Clone + 'static,
B:Clone + 'static>(
lst: &alist<A,B>,
k: A)
-> B {
let eq_fn = lst.eq_fn;
let data = lst.data.borrow();
for entry in &(*data) {
if eq_fn(entry.key.clone(), k.clone()) {
return entry.value.clone();
}
}
panic!();
}
#[inline]
pub fn new_int_alist<B:'static>() -> alist<isize, B> {
fn eq_int(a: isize, b: isize) -> bool { a == b }
return alist {
eq_fn: eq_int,
data: Box::new(RefCell::new(Vec::new())),
};
}
#[inline]
pub fn new_int_alist_2<B:'static>() -> alist<isize, B> {
#[inline]
fn eq_int(a: isize, b: isize) -> bool { a == b }
return alist {
eq_fn: eq_int,
data: Box::new(RefCell::new(Vec::new())),
};
}
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