artiq/artiq/coredevice/jsondesc.py

36 lines
1.0 KiB
Python

from os import path
import json
from jsonschema import Draft7Validator, validators
def extend_with_default(validator_class):
validate_properties = validator_class.VALIDATORS["properties"]
def set_defaults(validator, properties, instance, schema):
for property, subschema in properties.items():
if "default" in subschema:
instance.setdefault(property, subschema["default"])
for error in validate_properties(
validator, properties, instance, schema,
):
yield error
return validators.extend(
validator_class, {"properties" : set_defaults},
)
schema_path = path.join(path.dirname(__file__), "coredevice_generic.schema.json")
with open(schema_path, "r") as f:
schema = json.load(f)
validator = extend_with_default(Draft7Validator)(schema)
def load(description_path):
with open(description_path, "r") as f:
result = json.load(f)
global validator
validator.validate(result)
return result