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Fix casing of dynamic tags #2578

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merged 3 commits into from Apr 5, 2022
Merged

Fix casing of dynamic tags #2578

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49fb6c0
fix casing of dynamic tags
WorldSEnder Apr 5, 2022
d4be78e
add test case for unknown tag names
WorldSEnder Apr 5, 2022
1e418e2
add lint for non-normalized tags
WorldSEnder Apr 5, 2022
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38 changes: 16 additions & 22 deletions packages/yew-macro/src/html_tree/html_element.rs
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Expand Up @@ -375,18 +375,15 @@ impl ToTokens for HtmlElement {
let mut #vtag_name = ::std::convert::Into::<
::std::borrow::Cow::<'static, ::std::primitive::str>
>::into(#expr);
if !#vtag_name.is_ascii() {
::std::panic!(
"a dynamic tag returned a tag name containing non ASCII characters: `{}`",
#vtag_name,
);
}
// convert to lowercase because the runtime checks rely on it.
#vtag_name.to_mut().make_ascii_lowercase();
::std::debug_assert!(
#vtag_name.is_ascii(),
"a dynamic tag returned a tag name containing non ASCII characters: `{}`",
#vtag_name,
);

#[allow(clippy::redundant_clone, unused_braces, clippy::let_and_return)]
let mut #vtag = match ::std::convert::AsRef::<::std::primitive::str>::as_ref(&#vtag_name) {
"input" => {
let mut #vtag = match () {
_ if "input".eq_ignore_ascii_case(::std::convert::AsRef::<::std::primitive::str>::as_ref(&#vtag_name)) => {
::yew::virtual_dom::VTag::__new_textarea(
#value,
#node_ref,
Expand All @@ -395,7 +392,7 @@ impl ToTokens for HtmlElement {
#listeners,
)
}
"textarea" => {
_ if "textarea".eq_ignore_ascii_case(::std::convert::AsRef::<::std::primitive::str>::as_ref(&#vtag_name)) => {
::yew::virtual_dom::VTag::__new_textarea(
#value,
#node_ref,
Expand Down Expand Up @@ -429,17 +426,14 @@ impl ToTokens for HtmlElement {
//
// check void element
if !#vtag.children().is_empty() {
match #vtag.tag() {
"area" | "base" | "br" | "col" | "embed" | "hr" | "img" | "input"
| "link" | "meta" | "param" | "source" | "track" | "wbr"
=> {
::std::panic!(
"a dynamic tag tried to create a `<{0}>` tag with children. `<{0}>` is a void element which can't have any children.",
#vtag.tag(),
);
}
_ => {}
}
::std::debug_assert!(
!::std::matches!(#vtag.tag().to_ascii_lowercase().as_str(),
"area" | "base" | "br" | "col" | "embed" | "hr" | "img" | "input"
| "link" | "meta" | "param" | "source" | "track" | "wbr"
),
"a dynamic tag tried to create a `<{0}>` tag with children. `<{0}>` is a void element which can't have any children.",
#vtag.tag(),
);
}

::std::convert::Into::<::yew::virtual_dom::VNode>::into(#vtag)
Expand Down
11 changes: 11 additions & 0 deletions packages/yew/src/dom_bundle/btag/mod.rs
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Expand Up @@ -845,9 +845,20 @@ mod tests {
<@{"tExTAREa"}/>
};
let vtag = assert_vtag_ref(&el);
// textarea is a special element, so it gets normalized
assert_eq!(vtag.tag(), "textarea");
}

#[test]
fn dynamic_tags_allow_custom_capitalization() {
let el = html! {
<@{"clipPath"}/>
};
let vtag = assert_vtag_ref(&el);
// no special treatment for elements not recognized e.g. clipPath
assert_eq!(vtag.tag(), "clipPath");
}

#[test]
fn reset_node_ref() {
let (root, scope, parent) = setup_parent();
Expand Down