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perf(plugin-shikiji): improve highlight whitespace

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pengzhanbo 2024-08-14 03:54:52 +08:00
parent 199bbd9a9a
commit 48a6596297
1 changed files with 18 additions and 0 deletions
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18
plugins/plugin-shikiji/src/node/utils/whitespace.ts Normal file
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export const WHITESPACE_REGEXP = /:whitespace(?:=(all|boundary|trailing)?)?\b/
export const NO_WHITESPACE_REGEXP = /:no-whitespace\b/
export type WhitespacePosition = 'all' | 'boundary' | 'trailing'
export function resolveWhitespacePosition(info: string, defaultPosition?: boolean | WhitespacePosition): WhitespacePosition | false {
if (NO_WHITESPACE_REGEXP.test(info)) {
return false
}
defaultPosition = defaultPosition === true ? undefined : defaultPosition
const match = info.match(WHITESPACE_REGEXP)
if (match) {
return (match[1] || defaultPosition || 'all') as WhitespacePosition
}
return defaultPosition ?? false
}