1 files changed, 25 insertions, 0 deletions
diff --git a/chain/src/lib.rs b/chain/src/lib.rs
new file mode 100644
index 0000000..0ec4d4c
--- /dev/null
+++ b/chain/src/lib.rs
@@ -0,0 +1,25 @@
+//! This package implements the core algorithm of the entire
+//! workspace: parsing with derivatives by means of chain rule and
+//! regular nulling languages.
+//!
+//! Since I shall not name my crate "core" to avoid collisions with
+//! the Rust's own core, I decided to name this crate after what I
+//! think is the essence of this algorithm, the chain-rule for
+//! derivatives of languages.
+
+pub mod grammar;
+
+pub fn add(left: usize, right: usize) -> usize {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}