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xso: add support for ignoring unknown children

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This commit is contained in:
Jonas Schäfer 2024-10-03 12:51:57 +02:00 • committed by Link Mauve
commit 66233b0150
10 changed files with 242 additions and 6 deletions
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15
xso-proc/src/meta.rs
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@ -353,6 +353,10 @@ pub(crate) struct XmlCompoundMeta {
/// any.
pub(crate) on_unknown_attribute: Option<Ident>,
/// The value assigned to `on_unknown_child` inside `#[xml(..)]`, if
/// any.
pub(crate) on_unknown_child: Option<Ident>,
/// The exhaustive flag.
pub(crate) exhaustive: Flag,
@ -370,6 +374,7 @@ impl XmlCompoundMeta {
let mut builder = None;
let mut iterator = None;
let mut on_unknown_attribute = None;
let mut on_unknown_child = None;
let mut debug = Flag::Absent;
let mut exhaustive = Flag::Absent;
let mut transparent = Flag::Absent;
@ -402,6 +407,15 @@ impl XmlCompoundMeta {
}
on_unknown_attribute = Some(meta.value()?.parse()?);
Ok(())
} else if meta.path.is_ident("on_unknown_child") {
if on_unknown_child.is_some() {
return Err(Error::new_spanned(
meta.path,
"duplicate `on_unknown_child` key",
));
}
on_unknown_child = Some(meta.value()?.parse()?);
Ok(())
} else if meta.path.is_ident("exhaustive") {
if exhaustive.is_set() {
return Err(Error::new_spanned(meta.path, "duplicate `exhaustive` key"));
@ -429,6 +443,7 @@ impl XmlCompoundMeta {
builder,
iterator,
on_unknown_attribute,
on_unknown_child,
exhaustive,
transparent,
})