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