Initial commit; a basic Logos lexer and some tests.

src/syntax/ast.rs

@@ -0,0 +1,14 @@
+pub enum Stmt {
+    Binding(String, Expr),
+    Expr(Expr),
+}
+
+pub enum Expr {
+    Value(Value),
+    Reference(String),
+    Primitive(String, Vec<Expr>),
+}
+
+pub enum Value {
+    Number(Option<u8>, i128)
+}