add examples

examples/woods/opsem_rulebased.py

@@ -0,0 +1,25 @@
+### Operational Semantics - defined by rule-based model transformation ###
+
+from transformation.rule import Rule, RuleMatcherRewriter, PriorityActionGenerator
+from transformation.ramify import ramify
+from util import loader
+
+import os
+THIS_DIR = os.path.dirname(__file__)
+
+get_filename = lambda rule_name, kind: f"{THIS_DIR}/rules/r_{rule_name}_{kind}.od"
+
+def get_action_generator(state, rt_mm):
+    rt_mm_ramified = ramify(state, rt_mm)
+
+    matcher_rewriter = RuleMatcherRewriter(state, rt_mm, rt_mm_ramified)
+
+    rules0_dict = loader.load_rules(state, get_filename, rt_mm_ramified, ["hungry_bear_dies"])
+    rules1_dict = loader.load_rules(state, get_filename, rt_mm_ramified, ["advance_time", "attack"]) 
+
+    generator = PriorityActionGenerator(matcher_rewriter, [
+        rules0_dict, # highest priority
+        rules1_dict, # lowest priority
+    ])
+
+    return generator