| """The purpose of this module is implement PEP 621 validations that are |
| difficult to express as a JSON Schema (or that are not supported by the current |
| JSON Schema library). |
| """ |
| |
| from typing import Mapping, TypeVar |
| |
| from .fastjsonschema_exceptions import JsonSchemaValueException |
| |
| T = TypeVar("T", bound=Mapping) |
| |
| |
| class RedefiningStaticFieldAsDynamic(JsonSchemaValueException): |
| """According to PEP 621: |
| |
| Build back-ends MUST raise an error if the metadata specifies a field |
| statically as well as being listed in dynamic. |
| """ |
| |
| |
| def validate_project_dynamic(pyproject: T) -> T: |
| project_table = pyproject.get("project", {}) |
| dynamic = project_table.get("dynamic", []) |
| |
| for field in dynamic: |
| if field in project_table: |
| msg = f"You cannot provide a value for `project.{field}` and " |
| msg += "list it under `project.dynamic` at the same time" |
| name = f"data.project.{field}" |
| value = {field: project_table[field], "...": " # ...", "dynamic": dynamic} |
| raise RedefiningStaticFieldAsDynamic(msg, value, name, rule="PEP 621") |
| |
| return pyproject |
| |
| |
| EXTRA_VALIDATIONS = (validate_project_dynamic,) |
