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mam: Use a macro to generate Result_.

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This commit is contained in:
Emmanuel Gil Peyrot 2018-05-15 02:06:38 +02:00
parent 965f6a1f83
commit d9f2af6c97
2 changed files with 13 additions and 42 deletions
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3
src/macros.rs
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@ -543,6 +543,9 @@ macro_rules! generate_element_with_children {
($(#[$meta:meta])* $elem:ident, $name:tt, $ns:ident, child: ($(#[$child_meta:meta])* $child_ident:ident: $child_type:ty = ($child_name:tt, $child_ns:ident) => $child_constructor:ident)) => ( ($(#[$meta:meta])* $elem:ident, $name:tt, $ns:ident, child: ($(#[$child_meta:meta])* $child_ident:ident: $child_type:ty = ($child_name:tt, $child_ns:ident) => $child_constructor:ident)) => (
generate_element_with_children!($(#[$meta])* $elem, $name, $ns, attributes: [], child: ($(#[$child_meta])* $child_ident: $child_type = ($child_name, $child_ns) => $child_constructor)); generate_element_with_children!($(#[$meta])* $elem, $name, $ns, attributes: [], child: ($(#[$child_meta])* $child_ident: $child_type = ($child_name, $child_ns) => $child_constructor));
); );
($(#[$meta:meta])* $elem:ident, $name:tt, $ns:ident, attributes: [$($(#[$attr_meta:meta])* $attr:ident: $attr_type:ty = $attr_name:tt => $attr_action:tt),*,], child: ($(#[$child_meta:meta])* $child_ident:ident: $child_type:ty = ($child_name:tt, $child_ns:ident) => $child_constructor:ident)) => (
generate_element_with_children!($(#[$meta])* $elem, $name, $ns, attributes: [$($(#[$attr_meta])* $attr: $attr_type = $attr_name => $attr_action),*], child: ($(#[$child_meta])* $child_ident: $child_type = ($child_name, $child_ns) => $child_constructor));
);
($(#[$meta:meta])* $elem:ident, $name:tt, $ns:ident, attributes: [$($(#[$attr_meta:meta])* $attr:ident: $attr_type:ty = $attr_name:tt => $attr_action:tt),*], child: ($(#[$child_meta:meta])* $child_ident:ident: $child_type:ty = ($child_name:tt, $child_ns:ident) => $child_constructor:ident)) => ( ($(#[$meta:meta])* $elem:ident, $name:tt, $ns:ident, attributes: [$($(#[$attr_meta:meta])* $attr:ident: $attr_type:ty = $attr_name:tt => $attr_action:tt),*], child: ($(#[$child_meta:meta])* $child_ident:ident: $child_type:ty = ($child_name:tt, $child_ns:ident) => $child_constructor:ident)) => (
$(#[$meta])* $(#[$meta])*
#[derive(Debug, Clone)] #[derive(Debug, Clone)]

52
src/mam.rs
View file

@ -25,12 +25,16 @@ pub struct Query {
pub set: Option<Set>, pub set: Option<Set>,
} }
#[derive(Debug, Clone)] generate_element_with_children!(
pub struct Result_ { Result_, "result", MAM,
pub queryid: String, attributes: [
pub id: String, id: String = "id" => required,
pub forwarded: Forwarded, queryid: String = "queryid" => required,
} ],
child: (
forwarded: Forwarded = ("forwarded", FORWARD) => Forwarded
)
);
#[derive(Debug, Clone)] #[derive(Debug, Clone)]
pub struct Fin { pub struct Fin {
@ -74,31 +78,6 @@ impl TryFrom<Element> for Query {
} }
} }
impl TryFrom<Element> for Result_ {
type Err = Error;
fn try_from(elem: Element) -> Result<Result_, Error> {
check_self!(elem, "result", MAM);
check_no_unknown_attributes!(elem, "result", ["queryid", "id"]);
let mut forwarded = None;
for child in elem.children() {
if child.is("forwarded", ns::FORWARD) {
forwarded = Some(Forwarded::try_from(child.clone())?);
} else {
return Err(Error::ParseError("Unknown child in result element."));
}
}
let forwarded = forwarded.ok_or(Error::ParseError("Mandatory forwarded element missing in result."))?;
let queryid = get_attr!(elem, "queryid", required);
let id = get_attr!(elem, "id", required);
Ok(Result_ {
queryid,
id,
forwarded,
})
}
}
impl TryFrom<Element> for Fin { impl TryFrom<Element> for Fin {
type Err = Error; type Err = Error;
@ -168,17 +147,6 @@ impl From<Query> for Element {
} }
} }
impl From<Result_> for Element {
fn from(result: Result_) -> Element {
Element::builder("result")
.ns(ns::MAM)
.attr("queryid", result.queryid)
.attr("id", result.id)
.append(result.forwarded)
.build()
}
}
impl From<Fin> for Element { impl From<Fin> for Element {
fn from(fin: Fin) -> Element { fn from(fin: Fin) -> Element {
Element::builder("fin") Element::builder("fin")