Parse basic math syntax

1 files changed, 31 insertions, 0 deletions

diff --git a/src/library/math/script.rs b/src/library/math/script.rs
new file mode 100644
index 00000000..09f52164
--- /dev/null
+++ b/src/library/math/script.rs
@@ -0,0 +1,31 @@
+use std::fmt::Write;
+
+use super::*;
+use crate::library::prelude::*;
+
+/// A sub- and/or superscript in a mathematical formula.
+#[derive(Debug, Hash)]
+pub struct ScriptNode {
+    /// The base.
+    pub base: MathNode,
+    /// The subscript.
+    pub sub: Option<MathNode>,
+    /// The superscript.
+    pub sup: Option<MathNode>,
+}
+
+impl Texify for ScriptNode {
+    fn texify(&self) -> EcoString {
+        let mut tex = self.base.texify();
+
+        if let Some(sub) = &self.sub {
+            write!(tex, "_{{{}}}", sub.texify()).unwrap();
+        }
+
+        if let Some(sup) = &self.sup {
+            write!(tex, "^{{{}}}", sup.texify()).unwrap();
+        }
+
+        tex
+    }
+}