es6.regexp.match.js
1.36 KB
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'use strict';
var anObject = require('./_an-object');
var toLength = require('./_to-length');
var advanceStringIndex = require('./_advance-string-index');
var regExpExec = require('./_regexp-exec-abstract');
// @@match logic
require('./_fix-re-wks')('match', 1, function (defined, MATCH, $match, maybeCallNative) {
return [
// `String.prototype.match` method
// https://tc39.github.io/ecma262/#sec-string.prototype.match
function match(regexp) {
var O = defined(this);
var fn = regexp == undefined ? undefined : regexp[MATCH];
return fn !== undefined ? fn.call(regexp, O) : new RegExp(regexp)[MATCH](String(O));
},
// `RegExp.prototype[@@match]` method
// https://tc39.github.io/ecma262/#sec-regexp.prototype-@@match
function (regexp) {
var res = maybeCallNative($match, regexp, this);
if (res.done) return res.value;
var rx = anObject(regexp);
var S = String(this);
if (!rx.global) return regExpExec(rx, S);
var fullUnicode = rx.unicode;
rx.lastIndex = 0;
var A = [];
var n = 0;
var result;
while ((result = regExpExec(rx, S)) !== null) {
var matchStr = String(result[0]);
A[n] = matchStr;
if (matchStr === '') rx.lastIndex = advanceStringIndex(S, toLength(rx.lastIndex), fullUnicode);
n++;
}
return n === 0 ? null : A;
}
];
});