35 lines
1.4 KiB
Python
35 lines
1.4 KiB
Python
from .base import BaseEngine
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from ast_checker.labels import label
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class CountNodeEngine(BaseEngine):
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def _message(self, rule, count):
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target = rule["target"]
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min_count = rule.get("min")
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max_count = rule.get("max")
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if min_count is not None and count < min_count:
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return rule.get("message") or f"{rule.get('label') or label(target)} 至少出现 {min_count} 次，当前 {count} 次"
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if max_count is not None and count > max_count:
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return rule.get("message") or f"{rule.get('label') or label(target)} 至多出现 {max_count} 次，当前 {count} 次"
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return None
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def check(self, tree, rule, language, mapping):
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target = rule["target"]
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node_type = mapping.get(target, target)
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count = len(self.collect_nodes(tree.root_node, node_type))
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msg = self._message(rule, count)
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return [msg] if msg else []
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def describe(self, rule, language, mapping):
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target = rule["target"]
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min_count = rule.get("min")
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max_count = rule.get("max")
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if rule.get("message"):
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return rule["message"]
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parts = []
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if min_count is not None:
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parts.append(f"至少 {min_count} 次")
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if max_count is not None:
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parts.append(f"至多 {max_count} 次")
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return f"{rule.get('label') or label(target)} " + "、".join(parts)
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