1 files changed, 98 insertions, 0 deletions
diff --git a/src/description/mod.rs b/src/description/mod.rs
new file mode 100644
index 0000000..a87c1cf
--- /dev/null
+++ b/src/description/mod.rs
@@ -0,0 +1,98 @@
+//! Reference entry description.
+use crate::xml::element::{Elements, FromElements};
+
+mod part;
+
+pub use part::{Error as PartError, Part};
+
+/// Reference entry description.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct Description
+{
+    for_function: Option<String>,
+    parts: Vec<Part>,
+}
+
+impl Description
+{
+    /// Returns a new empty `Description`.
+    #[must_use]
+    pub fn new() -> Self
+    {
+        Self {
+            for_function: None,
+            parts: Vec::new(),
+        }
+    }
+
+    /// Returns what function this description is specific for.
+    #[must_use]
+    pub fn for_function(&self) -> &Option<String>
+    {
+        &self.for_function
+    }
+
+    /// Returns the description's parts.
+    #[must_use]
+    pub fn parts(&self) -> &[Part]
+    {
+        &self.parts
+    }
+}
+
+impl Default for Description
+{
+    fn default() -> Self
+    {
+        Self::new()
+    }
+}
+
+impl FromElements for Description
+{
+    type Error = Error;
+
+    fn from_elements(elements: &Elements) -> Result<Self, Self::Error>
+    {
+        let for_function =
+            elements
+                .get_first_tagged_with_name("title")
+                .and_then(|title_element| {
+                    let title_text =
+                        title_element.child_elements().get_first_text_element()?;
+
+                    if title_text != "Description for " {
+                        return None;
+                    }
+
+                    let function_element = title_element
+                        .child_elements()
+                        .get_first_tagged_with_name("function")?;
+
+                    function_element
+                        .child_elements()
+                        .get_first_text_element()
+                        .cloned()
+                });
+
+        let parts = elements
+            .get_all_tagged_elements()
+            .into_iter()
+            .map(Part::from_tagged_element)
+            .collect::<Result<Vec<_>, _>>()?;
+
+        Ok(Description {
+            for_function,
+            parts,
+        })
+    }
+}
+
+/// [`Description`] error.
+#[derive(Debug, thiserror::Error)]
+pub enum Error
+{
+    /// Invalid description part.
+    #[error("Invalid description part")]
+    InvalidPart(#[from] PartError),
+}