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CompiledPat

Struct CompiledPat 

Source
struct CompiledPat(Option<Regex>);
Expand description

编译产物:把「坏正则降级为不匹配」的语义封装在一处。

调用方不再到处写 re_ref(re!(...))? 或手写 None 回退——直接调 CompiledPat::captures_head / CompiledPat::is_match,编译失败时返回 不匹配(None / false)。对应原始 Regex 方法的子集。

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§0: Option<Regex>

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impl CompiledPat

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fn captures_head<'s>(&'s self, input: &'s str) -> Option<Captures<'s>>

锚定头部匹配(坏正则 → None)。匹配失败/编译失败统一为不匹配。

fancy-regex 的 Captures 同时借用 regex 与 input,故签名把两者绑到同一 生命周期 's。调用处 self 来自 &*RE'static),所以实际约束是 input 须在 captures 使用期间存活——与原始 re.captures(input) 一致。

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fn is_match(&self, input: &str) -> bool

是否匹配(坏正则 → false)。

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