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parsers: use Error type from xso

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This is a large change and as such, it needs good motivation. Let me
remind you of the ultimate goal: we want a derive macro which allows us
to FromXml/IntoXml, and that derive macro should be usable from
`xmpp_parsers` and other crates.

For that, any code generated by the derive macro mustn't depend on any
code in the `xmpp_parsers` crate, because you cannot name the crate you
are in portably (`xmpp_parsers::..` wouldn't resolve within
`xmpp_parsers`, and `crate::..` would point at other crates if the macro
was used in other crates).

We also want to interoperate with code already implementing
`TryFrom<Element>` and `Into<Element>` on structs. This ultimately
requires that we have an error type which is shared by the two
implementations and that error type must be declared in the `xso` crate
to be usable by the macros.

Thus, we port the error type over to use the type declared in `xso`.

This changes the structure of the error type greatly; I do not think
that `xso` should have to know about all the different types we are
parsing there and they don't deserve special treatment. Wrapping them in
a `Box<dyn ..>` seems more appropriate.
This commit is contained in:
Jonas Schäfer 2024-06-21 16:27:43 +02:00
commit 6ef8dbefa3
62 changed files with 916 additions and 892 deletions
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6
parsers/src/vcard.rs
View file

@ -55,14 +55,12 @@ pub struct VCard {
}
impl TryFrom<Element> for VCard {
type Error = crate::util::error::Error;
type Error = xso::error::Error;
fn try_from(value: Element) -> Result<Self, Self::Error> {
// Check that the root element is <vCard>
if !value.is("vCard", ns::VCARD) {
return Err(Error::ParseError(
"Root element is not <vCard xmlns='vcard-temp'>",
));
return Err(Error::Other("Root element is not <vCard xmlns='vcard-temp'>").into());
}
// Parse the <PHOTO> element, if any.