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Make adding multiple children nicer

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This commit is contained in:
Joscha 2024-11-27 01:16:16 +01:00
parent 924679e5ac
commit c4b3a279cc
1 changed files with 48 additions and 0 deletions
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48
src/element.rs
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@ -100,8 +100,56 @@ impl Element {
self.children.push(child.into());
self
}
pub fn children(mut self, children: impl AddChildren) -> Self {
children.add_children(&mut self.children);
self
}
}
pub trait AddChildren {
fn add_children(self, children: &mut Vec<Content>);
}
impl<T: Into<Content>> AddChildren for T {
fn add_children(self, children: &mut Vec<Content>) {
children.push(self.into());
}
}
impl AddChildren for Vec<Content> {
fn add_children(self, children: &mut Vec<Content>) {
children.extend(self);
}
}
impl<const L: usize> AddChildren for [Content; L] {
fn add_children(self, children: &mut Vec<Content>) {
children.extend(self);
}
}
macro_rules! add_children_tuple {
( $( $t:ident ),* ) => {
impl <$( $t: AddChildren ),*> AddChildren for ($( $t ),*) {
fn add_children(self, children: &mut Vec<Content>) {
#[allow(non_snake_case)]
let ($( $t ),*) = self;
$( $t.add_children(children); )*
}
}
};
}
add_children_tuple!(C1, C2);
add_children_tuple!(C1, C2, C3);
add_children_tuple!(C1, C2, C3, C4);
add_children_tuple!(C1, C2, C3, C4, C5);
add_children_tuple!(C1, C2, C3, C4, C5, C6);
add_children_tuple!(C1, C2, C3, C4, C5, C6, C7);
add_children_tuple!(C1, C2, C3, C4, C5, C6, C7, C8);
add_children_tuple!(C1, C2, C3, C4, C5, C6, C7, C8, C9);
/// An HTML document.
///
/// A `Document(el)` is basically the same as `[Content::doctype(), el.into()]`