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25 lines
602 B
Text
25 lines
602 B
Text
/**
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* @typedef {import('../types.js').Unsafe} Unsafe
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*/
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/**
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* @param {Unsafe} pattern
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* @returns {RegExp}
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*/
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export function patternCompile(pattern) {
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if (!pattern._compiled) {
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const before =
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(pattern.atBreak ? '[\\r\\n][\\t ]*' : '') +
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(pattern.before ? '(?:' + pattern.before + ')' : '')
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pattern._compiled = new RegExp(
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(before ? '(' + before + ')' : '') +
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(/[|\\{}()[\]^$+*?.-]/.test(pattern.character) ? '\\' : '') +
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pattern.character +
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(pattern.after ? '(?:' + pattern.after + ')' : ''),
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'g'
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)
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}
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return pattern._compiled
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}
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