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(WIP) implementing CBD language... Meta-meta-model: Association inherits from Class. Matcher accepts pivot. Add generic graphviz renderer.

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This commit is contained in:
Joeri Exelmans 2024-11-07 09:46:29 +01:00
parent a26ceef10f
commit 1eb8a84553
25 changed files with 542 additions and 170 deletions
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24
transformation/rewriter.py
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@ -65,6 +65,7 @@ def rewrite(state, lhs_m: UUID, rhs_m: UUID, pattern_mm: UUID, name_mapping: dic
model_el_name_to_create = pattern_name_to_create + str(i) # use the label of the element in the RHS as a basis
if len(bottom.read_outgoing_elements(host_m, model_el_name_to_create)) == 0:
break # found an available name
i += 1
# Determine the type of the thing to create
rhs_el_to_create, = bottom.read_outgoing_elements(rhs_m, pattern_name_to_create)
@ -130,30 +131,37 @@ def rewrite(state, lhs_m: UUID, rhs_m: UUID, pattern_mm: UUID, name_mapping: dic
# Perform updates (only on values)
for pattern_el_name in common:
model_el_name = name_mapping[pattern_el_name]
# print('updating', model_el_name)
model_el, = bottom.read_outgoing_elements(host_m, model_el_name)
host_type = od.get_type(bottom, model_el)
host_el_name = name_mapping[pattern_el_name]
host_el, = bottom.read_outgoing_elements(host_m, host_el_name)
# print('updating', host_el_name, host_el)
host_type = od.get_type(bottom, host_el)
# print('we have', pattern_el_name, '->', host_el_name, 'of type', type_name)
if od.is_typed_by(bottom, host_type, class_type):
# print(' -> is classs')
# nothing to do
pass
elif od.is_typed_by(bottom, host_type, assoc_type):
print(' -> is association')
# nothing to do
pass
elif od.is_typed_by(bottom, host_type, attr_link_type):
# print(' -> is attr link')
# nothing to do
pass
elif od.is_typed_by(bottom, host_type, modelref_type):
# print(' -> is modelref')
old_value, _ = od.read_primitive_value(bottom, model_el, mm)
print(' -> is modelref')
old_value, _ = od.read_primitive_value(bottom, host_el, mm)
rhs_el, = bottom.read_outgoing_elements(rhs_m, pattern_el_name)
expr, _ = od.read_primitive_value(bottom, rhs_el, pattern_mm)
result = eval(expr, {}, {'v': old_value})
# print('eval result=', result)
if isinstance(result, int):
# overwrite the old value, in-place
referred_model_id = UUID(bottom.read_value(model_el))
referred_model_id = UUID(bottom.read_value(host_el))
Integer(referred_model_id, state).create(result)
else:
raise Exception("Unimplemented type. Value:", result)
else:
raise Exception("Don't know what to do with element of type", host_type)
msg = f"Don't know what to do with element '{pattern_el_name}'->'{host_el_name}' of type ({host_type})"
# print(msg)
raise Exception(msg)