strong-xml
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PoiScript
Syntax Error on Self-Closing Element of type `Option<String>`
I'm not sure if this is "intended" as it is definitely a weird case. But see the following example:
#[derive(strong_xml::XmlRead)]
#[xml(tag = "head")]
pub struct Head {
#[xml(flatten_text="title")]
pub title: Option<String>,
}
fn main() {
let _: Head = strong_xml::XmlRead::from_str(r#"
<head>
<title/>
</head>
"#).unwrap();
}
(Example inspired by https://github.com/Holllo/opml/blob/75eb03b23fa12cd241883d9ee86f16e93d274ff0/opml_api/source/lib.rs#L238)
Running this results in:
thread 'main' panicked at 'called
Result::unwrap()on anErrvalue: UnexpectedToken { token: "ElementEnd { end: Empty, span: StrSpan("/>" 19..21) }" }', src/main.rs:13:9
I would expect that this resulted in an empty string.
This seems to be backed by my reading of the xml spec.
[Definition: An element with no content is said to be empty.] The representation of an empty element is either a start-tag immediately followed by an end-tag, or an empty-element tag. [Definition: An empty-element tag takes a special form:]
It seems that <foo></foo> and <foo/> are intended to be equivalent. I'm not 100% sure if if "no content" is equivalent to "content of an empty string" but they appear to be as far as I have read. So I think that this should parse just like <title></title> does.
