rewored rules to only invoke base rule, and added bash jobs

core/rule.py

@@ -0,0 +1,49 @@
+
+"""
+This file contains the MEOW rule defintion.
+
+Author(s): David Marchant
+"""
+
+from sys import modules
+from typing import Any
+
+if "BasePattern" not in modules:
+    from meow_base.core.base_pattern import BasePattern
+if "BaseRecipe" not in modules:
+    from meow_base.core.base_recipe import BaseRecipe
+from meow_base.core.correctness.vars import VALID_RULE_NAME_CHARS, \
+    get_drt_imp_msg
+from meow_base.core.correctness.validation import valid_string, check_type, \
+    check_implementation
+from meow_base.functionality.naming import generate_rule_id
+
+
+class Rule:
+    # A unique identifier for the rule
+    name:str
+    # A pattern to be used in rule triggering
+    pattern:BasePattern
+    # A recipe to be used in rule execution
+    recipe:BaseRecipe
+    def __init__(self, pattern:BasePattern, recipe:BaseRecipe, name:str=""):
+        """Rule Constructor. This will check that any class inheriting 
+        from it implements its validation functions. It will then call these on
+        the input parameters."""
+        if not name:
+            name = generate_rule_id()
+        self._is_valid_name(name)
+        self.name = name
+        check_type(pattern, BasePattern, hint="Rule.pattern")
+        self.pattern = pattern
+        check_type(recipe, BaseRecipe, hint="Rule.recipe")
+        self.recipe = recipe
+        if pattern.recipe != recipe.name:
+            raise ValueError(f"Cannot create Rule {name}. Pattern "
+                f"{pattern.name} does not identify Recipe {recipe.name}. It "
+                f"uses {pattern.recipe}")
+
+    def _is_valid_name(self, name:str)->None:
+        """Validation check for 'name' variable from main constructor. Is 
+        automatically called during initialisation."""
+        valid_string(name, VALID_RULE_NAME_CHARS)