(WIP) add CBD language

examples/cbd/models.py

@@ -0,0 +1,55 @@
+import os
+from framework.conformance import Conformance, render_conformance_check_result
+from concrete_syntax.textual_od import parser
+
+
+# get file contents as string
+def read_file(filename):
+    dir = os.path.dirname(__file__)
+    with open(dir+'/'+filename) as file:
+        return file.read()
+
+# def parse_and_check(state, cs_file, mm):
+#     m_cs = read_file(cs_file)
+#     try:
+#         _parse_and_check(state, m_cs, mm)
+#     except Exception as e:
+#         e.add_note(f"While parsing '{cs_file}'")
+#         raise
+#     return m
+
+def parse_and_check(state, m_cs, mm, descr: str):
+    try:
+        m = parser.parse_od(
+            state,
+            m_text=m_cs,
+            mm=mm,
+        )
+        conf = Conformance(state, m, mm)
+        errors = conf.check_nominal()
+        if len(errors) > 0:
+            raise Exception(render_conformance_check_result(errors))
+    except Exception as e:
+        e.add_note("While parsing model " + descr)
+        raise
+    return m
+
+def get_metamodels(state, scd_mmm):
+    mm_cs    =         read_file('models/mm_design.od')
+    mm_rt_cs = mm_cs + read_file('models/mm_runtime.od')
+
+    mm    = parse_and_check(state, mm_cs,    scd_mmm, "Design meta-model")
+    mm_rt = parse_and_check(state, mm_rt_cs, scd_mmm, "Runtime meta-model")
+
+    return (mm, mm_rt)
+
+def get_fibonacci(state, scd_mmm):
+    mm, mm_rt = get_metamodels(state, scd_mmm)
+
+    m_cs            =        read_file('models/m_fibonacci.od')
+    m_rt_initial_cs = m_cs + read_file('models/m_fibonacci_initial.od')
+
+    m            = parse_and_check(state, m_cs,            mm,    "Fibonacci model")
+    m_rt_initial = parse_and_check(state, m_rt_initial_cs, mm_rt, "Fibonacci initial state")
+
+    return (mm, mm_rt, m, m_rt_initial)