Implemented a first and basic version of a Rete rule engine

src/core/rule.py

@@ -5,6 +5,7 @@ import core.utils
 
 ACTION_TYPE_PRINT = "print"
 ACTION_TYPE_EXEC = "exec"
+ACTION_TYPE_TEST = "test"
 
 
 @dataclass
@@ -30,17 +31,23 @@ class Rule:
                  rule_id=None,
                  is_enabled=None):
         self.metadata = RuleMetadata(action_type, name, predicate, action, id=rule_id, is_enabled=is_enabled)
-        self.compiled_predicate = None
+        self.compiled_predicates = None
         self.compiled_action = None
         from core.sheerka.services.SheerkaComparisonManager import SheerkaComparisonManager
         self.priority = priority if priority is not None else SheerkaComparisonManager.DEFAULT_COMPARISON_VALUE
         self.error_sink = None
 
+        # from SheerkaRete, not quite sure one when it will be used
+        self.rete_net = None
+        self.rete_p_nodes = []  # list of production nodes for this rule
+        self.rete_disjunctions = None  # list of list as it may be several interpretation for a rule
+
     def __repr__(self):
         rule_id = f"#{self.metadata.id}"
         if self.name:
             rule_id += f" ({self.metadata.name})"
-        return f"Rule({rule_id}, when '{self.metadata.predicate}' {self.metadata.action_type} '{self.metadata.action}', priority={self.priority})"
+        action_type = "print" if self.metadata.action_type == "print" else "then"
+        return f"Rule({rule_id}, when '{self.metadata.predicate}' {action_type} '{self.metadata.action}', priority={self.priority})"
 
     def __eq__(self, other):
         if id(other) == id(self):
@@ -69,8 +76,12 @@ class Rule:
                     self.priority,
                     self.id,
                     self.metadata.is_enabled)
-        copy.compiled_predicate = self.compiled_predicate
+
+        copy.compiled_predicates = self.compiled_predicates
         copy.compiled_action = self.compiled_action
+        copy.metadata.is_compiled = self.metadata.is_compiled
+        copy.metadata.id_is_unresolved = self.metadata.id_is_unresolved
+        # copy.error_sink = self.error_sink # Uncomment this line if necessary
 
         return copy
 
@@ -102,3 +113,6 @@ class Rule:
 
     def short_str(self):
         return f"Rule(#{self.metadata.id}, '{self.metadata.predicate}', priority={self.priority})"
+
+    def get_rete_disjunctions(self):
+        return self.rete_disjunctions