44 lines
1.7 KiB
Python
44 lines
1.7 KiB
Python
"""Typed IR for a cost-reduction *dimension* + the ``admits`` scoping gate (Fase 1, F1).
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Pure module — imports **only** ``pydantic`` + stdlib. No ``agent_framework`` and no
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``verdicts`` (so ``ProposalFeatures`` is never referenced here); ``admits`` takes
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primitives. This keeps the module D7-portable and MAF-free, enforced by
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``tests/test_okf.py::test_okf_is_maf_free`` which AST-scans this file alongside
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``okf.py``.
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A dimension is one cost axis a project is reduced along (energy, paving, ...).
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``admits`` decides whether a candidate measure belongs to a dimension: its
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``measure_type`` must be allowed, and — when the dimension constrains cost codes —
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at least one affected code must match an allowed prefix.
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"""
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from __future__ import annotations
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from pydantic import BaseModel, Field
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class Dimension(BaseModel):
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"""One cost-reduction axis a project's candidate measures are scoped to."""
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id: str
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label: str = Field(min_length=1)
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allowed_measure_types: frozenset[str]
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allowed_code_prefixes: frozenset[str] = frozenset()
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def admits(*, measure_type: str, codes: frozenset[str], dimension: Dimension) -> bool:
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"""True iff a candidate measure belongs to ``dimension``.
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Two conjoined conditions:
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- ``measure_type`` is in ``dimension.allowed_measure_types``; **and**
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- the dimension imposes no code constraint (``allowed_code_prefixes`` empty),
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**or** at least one of ``codes`` starts with one of the allowed prefixes.
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"""
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if measure_type not in dimension.allowed_measure_types:
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return False
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if not dimension.allowed_code_prefixes:
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return True
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return any(
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code.startswith(prefix) for code in codes for prefix in dimension.allowed_code_prefixes
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)
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