initial commit

src/literals.lalrpop

@@ -0,0 +1,13 @@
+use std::str::FromStr;
+
+grammar;
+
+pub Atom: f64 = {
+    <n:Int> => n as f64,
+    Float,
+    "(" <Atom> ")",
+};
+
+pub Int: i64 = <s:r"[0-9]|[1-9][0-9]*"> => i64::from_str(s).unwrap();
+pub Float: f64 = <s:r"[+-]?([0-9]*[.][0-9]+|[0-9]*([.][0-9]+)?[Ee][+-]?[1-9][0-9]*)"> => f64::from_str(s).unwrap();
+pub StringLiteral: &'input str = <s:"\"[^\"]\""> => s;