40 lines
1.6 KiB
Python
40 lines
1.6 KiB
Python
from ast_checker.labels import label
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from .base import BaseEngine
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class CountNodeEngine(BaseEngine):
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def _message(self, rule, count):
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name = rule.get("label") or label(rule["target"])
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exact = rule.get("exact")
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if exact is not None and count != exact:
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return rule.get("message") or f"{name} 需要出现 {exact} 次，当前 {count} 次"
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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"{name} 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"{name} 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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name = rule.get("label") or label(rule["target"])
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if rule.get("message"):
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return rule["message"]
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exact = rule.get("exact")
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if exact is not None:
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return f"{name} 出现 {exact} 次"
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parts = []
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if rule.get("min") is not None:
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parts.append(f"至少 {rule['min']} 次")
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if rule.get("max") is not None:
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parts.append(f"至多 {rule['max']} 次")
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return f"{name} " + "、".join(parts)
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