Rework strong and emph

- Star and underscore not parsed as strong/emph inside of words
- Stars/underscores must be balanced and they cannot go over paragraph break
- New `strong` and `emph` classes

2 files changed, 22 insertions, 0 deletions

diff --git a/src/library/mod.rs b/src/library/mod.rs
index 44f8f947..3115cc7a 100644
--- a/src/library/mod.rs
+++ b/src/library/mod.rs
@@ -93,6 +93,8 @@ pub fn new() -> Scope {
     std.def_class::<ParbreakNode>("parbreak");
     std.def_class::<LinebreakNode>("linebreak");
     std.def_class::<TextNode>("text");
+    std.def_class::<StrongNode>("strong");
+    std.def_class::<EmphNode>("emph");
     std.def_class::<DecoNode<Underline>>("underline");
     std.def_class::<DecoNode<Strikethrough>>("strike");
     std.def_class::<DecoNode<Overline>>("overline");
diff --git a/src/library/text.rs b/src/library/text.rs
index b8810ac6..6d7be323 100644
--- a/src/library/text.rs
+++ b/src/library/text.rs
@@ -150,6 +150,26 @@ impl Debug for TextNode {
     }
 }
 
+/// Strong text, rendered in boldface.
+pub struct StrongNode;
+
+#[class]
+impl StrongNode {
+    fn construct(_: &mut EvalContext, args: &mut Args) -> TypResult<Node> {
+        Ok(args.expect::<Node>("body")?.styled(TextNode::STRONG, true))
+    }
+}
+
+/// Emphasized text, rendered with an italic face.
+pub struct EmphNode;
+
+#[class]
+impl EmphNode {
+    fn construct(_: &mut EvalContext, args: &mut Args) -> TypResult<Node> {
+        Ok(args.expect::<Node>("body")?.styled(TextNode::EMPH, true))
+    }
+}
+
 /// A generic or named font family.
 #[derive(Clone, Eq, PartialEq, Hash)]
 pub enum FontFamily {