parsers: Fix some issues reported by clippy.

parsers/src/bookmarks2.rs

@@ -16,7 +16,7 @@ generate_attribute!(
 );
 
 /// A conference bookmark.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Default)]
 pub struct Conference {
     /// Whether a conference bookmark should be joined automatically.
     pub autojoin: Autojoin,
@@ -37,13 +37,7 @@ pub struct Conference {
 impl Conference {
     /// Create a new conference.
     pub fn new() -> Conference {
-        Conference {
-            autojoin: Autojoin::False,
-            name: None,
-            nick: None,
-            password: None,
-            extensions: None,
-        }
+        Conference::default()
     }
 }
 

parsers/src/date.rs

@@ -46,9 +46,9 @@ impl IntoAttributeValue for DateTime {
     }
 }
 
-impl Into<Node> for DateTime {
-    fn into(self) -> Node {
-        Node::Text(self.0.to_rfc3339())
+impl From<DateTime> for Node {
+    fn from(date: DateTime) -> Node {
+        Node::Text(date.0.to_rfc3339())
     }
 }
 

parsers/src/jingle_ice_udp.rs

@@ -9,6 +9,7 @@ use std::net::IpAddr;
 
 generate_element!(
     /// Wrapper element for an ICE-UDP transport.
+    #[derive(Default)]
     Transport, "transport", JINGLE_ICE_UDP,
     attributes: [
         /// A Password as defined in ICE-CORE.
@@ -29,12 +30,7 @@ generate_element!(
 impl Transport {
     /// Create a new ICE-UDP transport.
     pub fn new() -> Transport {
-        Transport {
-            pwd: None,
-            ufrag: None,
-            candidates: Vec::new(),
-            fingerprint: None,
-        }
+        Transport::default()
     }
 
     /// Add a candidate to this transport.

parsers/src/jingle_raw_udp.rs

@@ -9,6 +9,7 @@ use std::net::IpAddr;
 
 generate_element!(
     /// Wrapper element for an raw UDP transport.
+    #[derive(Default)]
     Transport, "transport", JINGLE_RAW_UDP,
     children: [
         /// List of candidates for this raw UDP session.
@@ -19,9 +20,7 @@ generate_element!(
 impl Transport {
     /// Create a new ICE-UDP transport.
     pub fn new() -> Transport {
-        Transport {
-            candidates: Vec::new(),
-        }
+        Transport::default()
     }
 
     /// Add a candidate to this transport.

parsers/src/mix.rs

@@ -95,11 +95,7 @@ impl IqResultPayload for Join {}
 impl Join {
     /// Create a new Join element.
     pub fn from_nick_and_nodes<N: Into<String>>(nick: N, nodes: &[&str]) -> Join {
-        let subscribes = nodes
-            .into_iter()
-            .cloned()
-            .map(|n| Subscribe::new(n))
-            .collect();
+        let subscribes = nodes.iter().cloned().map(Subscribe::new).collect();
         Join {
             id: None,
             nick: nick.into(),
@@ -136,11 +132,7 @@ impl IqResultPayload for UpdateSubscription {}
 impl UpdateSubscription {
     /// Create a new UpdateSubscription element.
     pub fn from_nodes(nodes: &[&str]) -> UpdateSubscription {
-        let subscribes = nodes
-            .into_iter()
-            .cloned()
-            .map(|n| Subscribe::new(n))
-            .collect();
+        let subscribes = nodes.iter().cloned().map(Subscribe::new).collect();
         UpdateSubscription {
             jid: None,
             subscribes,
@@ -212,6 +204,7 @@ impl Mix {
 
 generate_element!(
     /// Create a new MIX channel.
+    #[derive(Default)]
     Create, "create", MIX_CORE,
     attributes: [
         /// The requested channel identifier.
@@ -225,7 +218,7 @@ impl IqResultPayload for Create {}
 impl Create {
     /// Create a new ad-hoc Create element.
     pub fn new() -> Create {
-        Create { channel: None }
+        Create::default()
     }
 
     /// Create a new Create element with a channel identifier.

parsers/src/presence.rs

@@ -8,7 +8,7 @@
 use crate::ns;
 use crate::util::error::Error;
 use jid::Jid;
-use minidom::{Element, IntoAttributeValue, Node};
+use minidom::{Element, IntoAttributeValue};
 use std::collections::BTreeMap;
 use std::convert::TryFrom;
 use std::str::FromStr;
@@ -48,17 +48,16 @@ impl FromStr for Show {
     }
 }
 
-impl Into<Node> for Show {
-    fn into(self) -> Node {
+impl From<Show> for Element {
+    fn from(show: Show) -> Element {
         Element::builder("show", ns::DEFAULT_NS)
-            .append(match self {
+            .append(match show {
                 Show::Away => "away",
                 Show::Chat => "chat",
                 Show::Dnd => "dnd",
                 Show::Xa => "xa",
             })
             .build()
-            .into()
     }
 }
 

parsers/src/pubsub/event.rs

@@ -189,7 +189,7 @@ impl TryFrom<Element> for PubSubEvent {
                 return Err(Error::ParseError("Unknown child in event element."));
             }
         }
-        Ok(payload.ok_or(Error::ParseError("No payload in event element."))?)
+        payload.ok_or(Error::ParseError("No payload in event element."))
     }
 }
 

parsers/src/pubsub/owner.rs

@@ -164,7 +164,7 @@ impl TryFrom<Element> for PubSubOwner {
                 return Err(Error::ParseError("Unknown child in pubsub element."));
             }
         }
-        Ok(payload.ok_or(Error::ParseError("No payload in pubsub element."))?)
+        payload.ok_or(Error::ParseError("No payload in pubsub element."))
     }
 }
 

parsers/src/pubsub/pubsub.rs

@@ -495,7 +495,7 @@ impl TryFrom<Element> for PubSub {
                 return Err(Error::ParseError("Unknown child in pubsub element."));
             }
         }
-        Ok(payload.ok_or(Error::ParseError("No payload in pubsub element."))?)
+        payload.ok_or(Error::ParseError("No payload in pubsub element."))
     }
 }
 

parsers/src/xhtml.rs

@@ -71,11 +71,7 @@ impl TryFrom<Element> for XhtmlIm {
         for child in elem.children() {
             if child.is("body", ns::XHTML) {
                 let child = child.clone();
-                let lang = match child.attr("xml:lang") {
-                    Some(lang) => lang,
-                    None => "",
-                }
-                .to_string();
+                let lang = child.attr("xml:lang").unwrap_or("").to_string();
                 let body = Body::try_from(child)?;
                 match bodies.insert(lang, body) {
                     None => (),
@@ -488,9 +484,9 @@ fn parse_css(style: Option<&str>) -> Css {
     let mut properties = vec![];
     if let Some(style) = style {
         // TODO: make that parser a bit more resilient to things.
-        for part in style.split(";") {
+        for part in style.split(';') {
             let mut part = part
-                .splitn(2, ":")
+                .splitn(2, ':')
                 .map(|a| a.to_string())
                 .collect::<Vec<_>>();
             let key = part.pop().unwrap();