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xso-proc: add support for renaming attributes

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This is akin to `#[serde(rename = ..)]` and thus useful.
This commit is contained in:
Jonas Schäfer 2024-06-23 10:09:59 +02:00
commit 219d682295
4 changed files with 112 additions and 27 deletions
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42
xso-proc/src/field.rs
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@ -73,30 +73,30 @@ impl FieldKind {
/// it is not specified explicitly.
fn from_meta(meta: XmlFieldMeta, field_ident: Option<&Ident>) -> Result<Self> {
match meta {
XmlFieldMeta::Attribute { span } => {
let Some(field_ident) = field_ident else {
return Err(Error::new(
span,
"attribute extraction not supported on unnamed fields",
));
};
let xml_name = match NcName::try_from(field_ident.to_string()) {
Ok(v) => v,
Err(e) => {
return Err(Error::new(
field_ident.span(),
format!("invalid XML attribute name: {}", e),
))
XmlFieldMeta::Attribute { span, name } => {
let xml_name = match name {
Some(v) => v,
None => match field_ident {
None => return Err(Error::new(
span,
"attribute name must be explicitly specified using `#[xml(attribute = ..)] on unnamed fields",
)),
Some(field_ident) => match NcName::try_from(field_ident.to_string()) {
Ok(value) => NameRef::Literal {
span: field_ident.span(),
value,
},
Err(e) => {
return Err(Error::new(
field_ident.span(),
format!("invalid XML attribute name: {}", e),
))
}
},
}
};
Ok(Self::Attribute {
xml_name: NameRef::Literal {
span: field_ident.span(),
value: xml_name,
},
})
Ok(Self::Attribute { xml_name })
}
}
}