mirror of https://github.com/astral-sh/ruff
24 lines
658 B
Rust
24 lines
658 B
Rust
use std::borrow::Cow;
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pub(crate) trait ShowNonprinting {
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fn show_nonprinting(&self) -> Cow<'_, str>;
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}
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macro_rules! impl_show_nonprinting {
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($(($from:expr, $to:expr)),+) => {
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impl ShowNonprinting for str {
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fn show_nonprinting(&self) -> Cow<'_, str> {
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if self.find(&[$($from),*][..]).is_some() {
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Cow::Owned(
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self.$(replace($from, $to)).*
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)
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} else {
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Cow::Borrowed(self)
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}
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}
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}
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};
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}
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impl_show_nonprinting!(('\x07', "␇"), ('\x08', "␈"), ('\x1b', "␛"), ('\x7f', "␡"));
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