Codegen: define and propagate synth property flag

Author: redsun82

misc/codegen/generators/qlgen.py

@@ -111,7 +111,7 @@ def get_ql_property(cls: schema.Class, prop: schema.Property, prev_child: str =
         is_predicate=prop.is_predicate,
         is_unordered=prop.is_unordered,
         description=prop.description,
-        synth=bool(cls.ipa),
+        synth=bool(cls.ipa) or prop.synth,
     )
     if prop.is_single:
         args.update(

misc/codegen/lib/schema.py

@@ -34,6 +34,7 @@ class Kind(Enum):
     pragmas: List[str] = field(default_factory=list)
     doc: Optional[str] = None
     description: List[str] = field(default_factory=list)
+    synth: bool = False
 
     @property
     def is_single(self) -> bool:

misc/codegen/test/test_qlgen.py

@@ -891,5 +891,19 @@ def test_stub_on_class_with_ipa_on_arguments(generate_classes):
     }
 
 
+def test_synth_property(generate_classes):
+    assert generate_classes([
+        schema.Class("MyObject", properties=[
+            schema.SingleProperty("foo", "bar", synth=True)]),
+    ]) == {
+        "MyObject.qll": (a_ql_stub(name="MyObject", base_import=gen_import_prefix + "MyObject"),
+                         a_ql_class(name="MyObject", final=True,
+                                    properties=[
+                                        ql.Property(singular="Foo", type="bar", tablename="my_objects", synth=True,
+                                                    tableparams=["this", "result"], doc="foo of this my object"),
+                                    ])),
+    }
+
+
 if __name__ == '__main__':
     sys.exit(pytest.main([__file__] + sys.argv[1:]))