merging (meta-)models works (but it's dirty!)

examples/semantics/translational/regenerate_mm.py

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+from state.devstate import DevState
+from bootstrap.scd import bootstrap_scd
+from concrete_syntax.textual_od import renderer
+from concrete_syntax.plantuml.renderer import render_class_diagram
+from concrete_syntax.plantuml.make_url import make_url
+from api.od import ODAPI
+
+from transformation.topify.topify import Topifier
+from transformation.merger import merge_models
+
+from util import loader
+
+from examples.semantics.operational.port import models
+
+import os
+THIS_DIR = os.path.dirname(__file__)
+
+# get file contents as string
+def read_file(filename):
+    with open(THIS_DIR+'/'+filename) as file:
+        return file.read()
+
+if __name__ == "__main__":
+    state = DevState()
+    scd_mmm = bootstrap_scd(state)
+
+    # Load Petri Net meta-models
+    pn_mm_cs    =            read_file('../../petrinet/metamodels/mm_design.od')
+    pn_mm_rt_cs = pn_mm_cs + read_file('../../petrinet/metamodels/mm_runtime.od')
+    pn_mm    = loader.parse_and_check(state, pn_mm_cs,    scd_mmm, "Petri-Net Design meta-model")
+    pn_mm_rt = loader.parse_and_check(state, pn_mm_rt_cs, scd_mmm, "Petri-Net Runtime meta-model")
+
+    # Load Port meta-models
+    port_mm    = loader.parse_and_check(state, models.port_mm_cs,    scd_mmm,    "Port-MM")
+    port_mm_rt = loader.parse_and_check(state, models.port_rt_mm_cs, scd_mmm,    "Port-MM-RT")
+
+    # Merge Petri Net and Port meta-models
+    print("merging...")
+    merged_mm_rt = merge_models(state, mm=scd_mmm, models=[pn_mm_rt, port_mm_rt])
+    print("done merging")
+
+    print()
+    print("topifying... (may take a while)")
+    topifier = Topifier(state)
+    top_merged_mm_rt = topifier.topify_cd(merged_mm_rt)
+    print("done topifying")
+
+    plantuml_url = make_url(render_class_diagram(state, top_merged_mm_rt))
+
+    print()
+    print(plantuml_url)
+    print()
+
+    txt = renderer.render_od(state, top_merged_mm_rt, scd_mmm)
+
+    filename = THIS_DIR+"/merged_mm.od"
+
+    with open(filename, "w") as file:
+        file.write(f"# Auto-generated by {__file__}\n\n")
+        file.write(f"# PlantUML visualization: {plantuml_url}\n\n")
+        file.write(txt)
+
+    print("Wrote file", filename)