Derive Debug, PartialEq, Eq, & Clone when possible

EntryData and FeedData need an explicitly implementation of Debug
because the atom types don't support it, and we probably don't want to
show the contained feeds anyway.

src/category.rs

@@ -1,6 +1,7 @@
 use atom_syndication as atom;
 use rss;
 
+#[derive(Debug, PartialEq, Eq, Clone)]
 pub struct Category {
     pub term: String,
     pub scheme: Option<String>,

src/entry.rs

@@ -2,18 +2,30 @@ use atom_syndication as atom;
 use rss;
 
 use std::str::FromStr;
+use std::fmt::{Formatter, Debug, Error};
 use chrono::{DateTime, UTC};
 
 use category::Category;
 use link::Link;
 use person::Person;
 use guid::Guid;
 
+#[derive(Clone)]
 enum EntryData {
     Atom(atom::Entry),
     Rss(rss::Item),
 }
 
+impl Debug for EntryData {
+    fn fmt(&self, f: &mut Formatter) -> Result<(), Error> {
+        match *self {
+            EntryData::Atom(_) => write!(f, "Atom(_)"),
+            EntryData::Rss(_) => write!(f, "Rss(_)"),
+        }
+    }
+}
+
+#[derive(Debug, Clone)]
 pub struct Entry {
     // If created from an Atom or RSS entry, this is the original contents
     source_data: Option<EntryData>,

src/feed.rs

@@ -2,6 +2,7 @@ use atom_syndication as atom;
 use rss;
 
 use std::str::FromStr;
+use std::fmt::{Debug, Formatter, Error};
 use chrono::{DateTime, UTC};
 
 use link::Link;
@@ -12,13 +13,24 @@ use entry::Entry;
 use image::Image;
 use text_input::TextInput;
 
+#[derive(Clone)]
 enum FeedData {
     Atom(atom::Feed),
     Rss(rss::Channel),
 }
 
+impl Debug for FeedData {
+    fn fmt(&self, f: &mut Formatter) -> Result<(), Error> {
+        match *self {
+            FeedData::Atom(_) => write!(f, "Atom(_)"),
+            FeedData::Rss(_) => write!(f, "Rss(_)"),
+        }
+    }
+}
+
 // A helpful table of approximately equivalent elements can be found here:
 // http://www.intertwingly.net/wiki/pie/Rss20AndAtom10Compared#table
+#[derive(Debug, Clone)]
 pub struct Feed {
     // If created from an RSS or Atom feed, this is the original contents
     source_data: Option<FeedData>,

src/generator.rs

@@ -1,5 +1,6 @@
 use atom_syndication as atom;
 
+#[derive(Debug, PartialEq, Eq, Clone)]
 pub struct Generator {
     pub name: String,
     pub uri: Option<String>,

src/guid.rs

@@ -1,5 +1,6 @@
 use rss;
 
+#[derive(Debug, PartialEq, Eq, Clone)]
 pub struct Guid {
     pub is_permalink: bool,
     pub id: String,

src/image.rs

@@ -1,5 +1,6 @@
 use rss;
 
+#[derive(Debug, PartialEq, Eq, Clone)]
 pub struct Image {
     pub url: String,
     pub title: String,

src/link.rs

@@ -1,5 +1,6 @@
 use atom_syndication as atom;
 
+#[derive(Debug, PartialEq, Eq, Clone)]
 pub struct Link {
     pub href: String,
     pub rel: Option<String>,

src/person.rs

@@ -1,5 +1,6 @@
 use atom_syndication as atom;
 
+#[derive(Debug, PartialEq, Clone)]
 pub struct Person {
     pub name: String,
     pub uri: Option<String>,

src/text_input.rs

@@ -1,5 +1,6 @@
 use rss;
 
+#[derive(Debug, PartialEq, Eq, Clone)]
 pub struct TextInput {
     pub title: String,
     pub description: String,