feat: add inline equation support

2 files changed, 54 insertions, 0 deletions

diff --git a/src/description.rs b/src/description.rs
index 31eff1e..e436e40 100644
--- a/src/description.rs
+++ b/src/description.rs
@@ -201,6 +201,9 @@ pub enum ParagraphPart
     /// Code part.
     Code(String),
 
+    /// Inline equation part.
+    InlineEquation(String),
+
     /// Reference entry citation part.
     Entry(String),
 
@@ -241,6 +244,7 @@ impl ParagraphPart
             "parameter" => Self::Parameter,
             "emphasis" => Self::Emphasis,
             "code" => Self::Code,
+            "inlineequation" => Self::InlineEquation,
             "citerefentry" => Self::Entry,
             "variablelist" | "itemizedlist" => |_| {
                 unreachable!();
@@ -280,6 +284,16 @@ impl ParagraphPart
             return Ok(Self::ItemizedList(itemized_list));
         }
 
+        if tagged_element.name() == "inlineequation" {
+            return Ok(Self::InlineEquation(
+                tagged_element
+                    .child_elements()
+                    .into_iter()
+                    .map(ToString::to_string)
+                    .collect::<String>(),
+            ));
+        }
+
         let text_element = tagged_element
             .child_elements()
             .get_first_text_element()
diff --git a/src/xml/element.rs b/src/xml/element.rs
index 91e4130..0f44182 100644
--- a/src/xml/element.rs
+++ b/src/xml/element.rs
@@ -1,3 +1,5 @@
+use std::fmt::Display;
+
 #[derive(Debug, PartialEq, Eq, Clone)]
 pub struct Elements
 {
@@ -144,6 +146,20 @@ pub enum Element
     Comment(String),
 }
 
+impl Display for Element
+{
+    fn fmt(&self, formatter: &mut std::fmt::Formatter<'_>) -> std::fmt::Result
+    {
+        match self {
+            Self::Tagged(tagged) => tagged.fmt(formatter),
+            Self::Text(text) => text.fmt(formatter),
+            Self::Comment(comment) => {
+                formatter.write_fmt(format_args!("<!--{comment}-->"))
+            }
+        }
+    }
+}
+
 #[derive(Debug, PartialEq, Eq, Clone)]
 pub struct Tagged
 {
@@ -152,6 +168,30 @@ pub struct Tagged
     attributes: Vec<Attribute>,
 }
 
+impl Display for Tagged
+{
+    fn fmt(&self, formatter: &mut std::fmt::Formatter<'_>) -> std::fmt::Result
+    {
+        let name = &self.name;
+
+        let attrs = self
+            .attributes
+            .iter()
+            .map(|attr| {
+                format!("{}=\"{}\" ", attr.key, String::from_utf8_lossy(&attr.value))
+            })
+            .collect::<String>();
+
+        let child_elements = self
+            .child_elements
+            .into_iter()
+            .map(ToString::to_string)
+            .collect::<String>();
+
+        formatter.write_fmt(format_args!("<{name} {attrs}>{child_elements}</{name}>",))
+    }
+}
+
 impl Tagged
 {
     pub fn new<Name, ChildElements, Attrs>(