continued work pattern matching

Justfile

@@ -0,0 +1,17 @@
+alias b := build
+
+build:
+    bnfc -o src -d Grammar.cf
+
+# clean the generated directories
+clean:
+    rm -r src/Grammar
+    rm language
+
+# run all tests
+test:
+    cabal test
+
+# compile a specific file
+run FILE:
+    cabal run language {{FILE}}