Node Dropped After filter_map

[aphronyx]

code:

let arr = manga_page.select("p.data:contains(作者：) > a").array();

arr.clone()
	.filter_map(|value| value.as_node().ok())
	.for_each(|node| println!("fm:{}", node.outer_html().read()));

for value in arr {
	let Some(node) = value.as_node().ok() else {
		continue;
	};
	println!("for:{}", node.outer_html().read());
}

output:

fm:
fm:
for:<a href="/home/index/search/?keyword=탄몬">탄몬</a>
for:<a href="/home/index/search/?keyword=쨈닭맨">쨈닭맨</a>

[Skittyblock]

I'm guessing this might have been fixed with Aidoku/Aidoku@b1e18ed (something I intended to do a long time ago), but you can wait until that's in the public build to test and see.

[aphronyx]

I'm guessing this might have been fixed with Aidoku/Aidoku@b1e18ed (something I intended to do a long time ago), but you can wait until that's in the public build to test and see.

the source Skittyblock/aidoku-community-sources#434 was written and tested with Aidoku/Aidoku@99d2907, and the #4 had been fixed, but this issue (filter_map) still happens to me, so i don’t think it has to do with reference issue

[Skittyblock]

alright, I'll look into it further.

[Skittyblock]

Found the issue; it is indeed aidoku-rs's fault. The ValueRef is being dropped as it goes out of scope even though it's casted to a Node in as_node(). aidoku-rs should transfer ownership to the Node it returns and ignore the dropping of the ValueRef, since it also destroy's the Node's descriptor. The following code works:

arr.clone()
	.filter_map(|mut value| {
		value.1 = false;
		if value.kind() == aidoku::std::Kind::Node {
			Some(unsafe { aidoku::std::html::Node::from(value.0) })
		} else {
			None
		}
	})
	.for_each(|node| println!("fm:{}", node.outer_html().read()));