Split grammar (#15)

* Move grammar parsers to entity classes

* Fix includes

* Fix Entity5 test

* Small detail

* Fix unknown keys entities

* Persistent grammar objects

* Fix grammar

* Grammar from variable

js/entity/SimpleSerializationRotatorEntity.js

@@ -1,4 +1,27 @@
+import Parsimmon from "parsimmon"
 import RotatorEntity from "./RotatorEntity.js"
+import Grammar from "../serialization/Grammar.js"
 
 export default class SimpleSerializationRotatorEntity extends RotatorEntity {
+
+    static grammar = this.createGrammar()
+
+    static createGrammar() {
+        return Parsimmon.alt(
+            Parsimmon.seq(
+                Grammar.number,
+                Grammar.commaSeparation,
+                Grammar.number,
+                Grammar.commaSeparation,
+                Grammar.number,
+            ).map(([p, _1, y, _3, r]) =>
+                new this({
+                    R: r,
+                    P: p,
+                    Y: y,
+                })
+            ),
+            RotatorEntity.createGrammar()
+        )
+    }
 }