Mainly worked on the rule matcher

Also fixed the name collector, and lambda parameters are no longer
resolved at parsing to support planned macro-based pattern matching.
The rule matcher clones a lot, the number of clones could be zero.

src/utils/unwrap_or_continue.rs

@@ -0,0 +1,6 @@
+#[macro_export]
+macro_rules! unwrap_or_continue {
+    ($m:expr) => {
+        { if let Some(res) = ($m) {res} else {continue} }
+    }
+}