add Jinja2-based tapaal exporter

examples/petrinet/translational_semantics/tapaal/exporter.py

@@ -0,0 +1,17 @@
+import jinja2
+import os
+THIS_DIR = os.path.dirname(__file__)
+
+from api.od import ODAPI
+from examples.petrinet import helpers
+from util.module_to_dict import module_to_dict
+
+def export_tapaal(state, m, mm):
+    loader = jinja2.FileSystemLoader(searchpath=THIS_DIR)
+    environment = jinja2.Environment(loader=loader)
+    template = environment.get_template("tapaal.jinja2")
+    return template.render({
+        'odapi': ODAPI(state, m, mm),
+        **globals()['__builtins__'],
+        **module_to_dict(helpers),
+    })