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""" |
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FrameworkEnricher base class. |
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Post-processing step that runs after AST ingestion. Examines existing graph |
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nodes and promotes generic Function/Class nodes to semantic framework types |
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by adding labels/properties. |
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""" |
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from abc import ABC, abstractmethod |
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from navegador.graph.store import GraphStore |
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class EnrichmentResult: |
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"""Result of an enrichment pass.""" |
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def __init__(self): |
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self.promoted: int = 0 # nodes that got framework-specific labels |
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self.edges_added: int = 0 # new semantic edges added |
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self.patterns_found: dict[str, int] = {} # pattern_name -> count |
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class FrameworkEnricher(ABC): |
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"""Base class for framework-specific graph enrichment.""" |
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def __init__(self, store: GraphStore): |
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self.store = store |
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@property |
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@abstractmethod |
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def framework_name(self) -> str: |
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"""Name of the framework (e.g. 'django', 'fastapi').""" |
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@property |
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@abstractmethod |
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def detection_patterns(self) -> list[str]: |
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"""Import module names that indicate this framework is in use. |
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Detection queries Import nodes for exact module matches, so use |
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the actual package name (e.g. 'django', 'fastapi', 'express'). |
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""" |
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@property |
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def detection_files(self) -> list[str]: |
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"""Filenames whose presence confirms the framework. |
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Override this to add file-based detection (e.g. 'manage.py' for |
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Django, 'Gemfile' for Rails). File names are matched exactly |
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against File node names — not as substrings. |
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""" |
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return [] |
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@abstractmethod |
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def enrich(self) -> EnrichmentResult: |
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"""Run enrichment on the current graph.""" |
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def detect(self) -> bool: |
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"""Check if the framework is present by looking for real imports and marker files.""" |
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# Check Import nodes for actual framework imports |
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for pattern in self.detection_patterns: |
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result = self.store.query( |
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"MATCH (n:Import) WHERE n.name = $name OR n.module = $name RETURN count(n) AS c", |
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{"name": pattern}, |
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) |
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rows = result.result_set or [] |
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if rows and rows[0][0] > 0: |
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return True |
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# Check for marker files by exact filename match |
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for filename in self.detection_files: |
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result = self.store.query( |
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"MATCH (f:File) WHERE f.name = $name RETURN count(f) AS c", |
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{"name": filename}, |
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) |
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rows = result.result_set or [] |
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if rows and rows[0][0] > 0: |
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return True |
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return False |
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def _promote_node( |
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self, name: str, file_path: str, semantic_type: str, props: dict = None |
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) -> None: |
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"""Add a semantic_type property to an existing node.""" |
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extra = "" |
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if props: |
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extra = ", " + ", ".join(f"n.{k} = ${k}" for k in props) |
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self.store.query( |
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f"MATCH (n) WHERE n.name = $name AND n.file_path = $file_path " |
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f"SET n.semantic_type = $semantic_type{extra}", |
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{"name": name, "file_path": file_path, "semantic_type": semantic_type, **(props or {})}, |
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) |
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def _add_semantic_edge( |
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self, from_name: str, edge_type: str, to_name: str, props: dict = None |
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) -> None: |
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"""Create a semantic edge between two nodes by name.""" |
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extra = "" |
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if props: |
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extra = " SET " + ", ".join(f"r.{k} = ${k}" for k in props) |
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self.store.query( |
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f"MATCH (a), (b) WHERE a.name = $from_name AND b.name = $to_name " |
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f"MERGE (a)-[r:{edge_type}]->(b){extra}", |
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{"from_name": from_name, "to_name": to_name, **(props or {})}, |
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) |
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