From e089b6ea40015e012302dc55ac5d6cb42ca4876e Mon Sep 17 00:00:00 2001
From: Laurenz <laurmaedje@gmail.com>
Date: Tue, 8 Feb 2022 16:39:37 +0100
Subject: Set rules for everything

---
 src/library/math.rs | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 src/library/math.rs

(limited to 'src/library/math.rs')

diff --git a/src/library/math.rs b/src/library/math.rs
new file mode 100644
index 00000000..c75cdea8
--- /dev/null
+++ b/src/library/math.rs
@@ -0,0 +1,32 @@
+//! Mathematical formulas.
+
+use super::prelude::*;
+
+/// A mathematical formula.
+#[derive(Debug, Hash)]
+pub struct MathNode {
+    /// The formula.
+    pub formula: EcoString,
+    /// Whether the formula is display-level.
+    pub display: bool,
+}
+
+#[class]
+impl MathNode {
+    fn construct(_: &mut EvalContext, args: &mut Args) -> TypResult<Template> {
+        Ok(Template::show(Self {
+            formula: args.expect("formula")?,
+            display: args.named("display")?.unwrap_or(false),
+        }))
+    }
+}
+
+impl Show for MathNode {
+    fn show(&self, _: StyleChain) -> Template {
+        let mut template = Template::Text(self.formula.trim().into());
+        if self.display {
+            template = Template::Block(template.pack());
+        }
+        template.monospaced()
+    }
+}
-- 
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