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