58 lines
1.7 KiB
Python
58 lines
1.7 KiB
Python
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"""
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Impact analyzer for assessing change significance.
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Implements FR-8: Impact Analysis
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Stateless analyzer that computes change magnitude and decides
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whether recomputation is warranted based on configurable thresholds.
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"""
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from typing import Optional
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from markitect.prompts.incremental.metrics import calculate_change_magnitude
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from markitect.prompts.incremental.models import RecomputeConfig
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class ImpactAnalyzer:
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"""
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Stateless impact analyzer for artifact changes.
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Computes change magnitude using diff metrics and compares against
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configurable thresholds to determine whether recomputation is needed.
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"""
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def calculate_magnitude(
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self,
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old_content: Optional[str],
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new_content: Optional[str],
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method: str = "structural",
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) -> float:
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"""
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Calculate the magnitude of a change.
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Args:
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old_content: Previous content (None for creation)
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new_content: Current content (None for deletion)
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method: Diff method ("structural" or "line")
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Returns:
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Change magnitude from 0.0 to 1.0
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"""
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return calculate_change_magnitude(old_content, new_content, method)
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def should_recompute(
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self,
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magnitude: float,
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config: RecomputeConfig,
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) -> bool:
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"""
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Determine whether a dependent should be recomputed based on magnitude.
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Args:
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magnitude: Change magnitude (0.0-1.0)
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config: Recompute configuration with threshold
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Returns:
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True if magnitude meets or exceeds threshold
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"""
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return magnitude >= config.impact_threshold
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