Sha256: 237d0c641e0ed109a4979554338c4ce79afb4af596abaeb7fb07ef3dc47cde5f
Contents?: true
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Versions: 46
Compression:
Stored size: 1.79 KB
Contents
'use strict';
var Type = require('../../type');
function resolveJavascriptRegExp(data) {
if (null === data) {
return false;
}
if (0 === data.length) {
return false;
}
var regexp = data,
tail = /\/([gim]*)$/.exec(data),
modifiers = '';
// if regexp starts with '/' it can have modifiers and must be properly closed
// `/foo/gim` - modifiers tail can be maximum 3 chars
if ('/' === regexp[0]) {
if (tail) {
modifiers = tail[1];
}
if (modifiers.length > 3) { return false; }
// if expression starts with /, is should be properly terminated
if (regexp[regexp.length - modifiers.length - 1] !== '/') { return false; }
regexp = regexp.slice(1, regexp.length - modifiers.length - 1);
}
try {
var dummy = new RegExp(regexp, modifiers);
return true;
} catch (error) {
return false;
}
}
function constructJavascriptRegExp(data) {
var regexp = data,
tail = /\/([gim]*)$/.exec(data),
modifiers = '';
// `/foo/gim` - tail can be maximum 4 chars
if ('/' === regexp[0]) {
if (tail) {
modifiers = tail[1];
}
regexp = regexp.slice(1, regexp.length - modifiers.length - 1);
}
return new RegExp(regexp, modifiers);
}
function representJavascriptRegExp(object /*, style*/) {
var result = '/' + object.source + '/';
if (object.global) {
result += 'g';
}
if (object.multiline) {
result += 'm';
}
if (object.ignoreCase) {
result += 'i';
}
return result;
}
function isRegExp(object) {
return '[object RegExp]' === Object.prototype.toString.call(object);
}
module.exports = new Type('tag:yaml.org,2002:js/regexp', {
kind: 'scalar',
resolve: resolveJavascriptRegExp,
construct: constructJavascriptRegExp,
predicate: isRegExp,
represent: representJavascriptRegExp
});
Version data entries
46 entries across 39 versions & 3 rubygems