debian-mirror-gitlab/core-js/modules/es.string.match-all.js
2019-09-25 13:30:05 +05:30

94 lines
3.6 KiB
JavaScript

'use strict';
var $ = require('../internals/export');
var createIteratorConstructor = require('../internals/create-iterator-constructor');
var requireObjectCoercible = require('../internals/require-object-coercible');
var toLength = require('../internals/to-length');
var aFunction = require('../internals/a-function');
var anObject = require('../internals/an-object');
var classof = require('../internals/classof');
var getFlags = require('../internals/regexp-flags');
var hide = require('../internals/hide');
var wellKnownSymbol = require('../internals/well-known-symbol');
var speciesConstructor = require('../internals/species-constructor');
var advanceStringIndex = require('../internals/advance-string-index');
var InternalStateModule = require('../internals/internal-state');
var IS_PURE = require('../internals/is-pure');
var MATCH_ALL = wellKnownSymbol('matchAll');
var REGEXP_STRING = 'RegExp String';
var REGEXP_STRING_ITERATOR = REGEXP_STRING + ' Iterator';
var setInternalState = InternalStateModule.set;
var getInternalState = InternalStateModule.getterFor(REGEXP_STRING_ITERATOR);
var RegExpPrototype = RegExp.prototype;
var regExpBuiltinExec = RegExpPrototype.exec;
var regExpExec = function (R, S) {
var exec = R.exec;
var result;
if (typeof exec == 'function') {
result = exec.call(R, S);
if (typeof result != 'object') throw TypeError('Incorrect exec result');
return result;
} return regExpBuiltinExec.call(R, S);
};
// eslint-disable-next-line max-len
var $RegExpStringIterator = createIteratorConstructor(function RegExpStringIterator(regexp, string, global, fullUnicode) {
setInternalState(this, {
type: REGEXP_STRING_ITERATOR,
regexp: regexp,
string: string,
global: global,
unicode: fullUnicode,
done: false
});
}, REGEXP_STRING, function next() {
var state = getInternalState(this);
if (state.done) return { value: undefined, done: true };
var R = state.regexp;
var S = state.string;
var match = regExpExec(R, S);
if (match === null) return { value: undefined, done: state.done = true };
if (state.global) {
if (String(match[0]) == '') R.lastIndex = advanceStringIndex(S, toLength(R.lastIndex), state.unicode);
return { value: match, done: false };
}
state.done = true;
return { value: match, done: false };
});
var $matchAll = function (string) {
var R = anObject(this);
var S = String(string);
var C, flagsValue, flags, matcher, global, fullUnicode;
C = speciesConstructor(R, RegExp);
flagsValue = R.flags;
if (flagsValue === undefined && R instanceof RegExp && !('flags' in RegExpPrototype)) {
flagsValue = getFlags.call(R);
}
flags = flagsValue === undefined ? '' : String(flagsValue);
matcher = new C(C === RegExp ? R.source : R, flags);
global = !!~flags.indexOf('g');
fullUnicode = !!~flags.indexOf('u');
matcher.lastIndex = toLength(R.lastIndex);
return new $RegExpStringIterator(matcher, S, global, fullUnicode);
};
// `String.prototype.matchAll` method
// https://github.com/tc39/proposal-string-matchall
$({ target: 'String', proto: true }, {
matchAll: function matchAll(regexp) {
var O = requireObjectCoercible(this);
var S, matcher, rx;
if (regexp != null) {
matcher = regexp[MATCH_ALL];
if (matcher === undefined && IS_PURE && classof(regexp) == 'RegExp') matcher = $matchAll;
if (matcher != null) return aFunction(matcher).call(regexp, O);
}
S = String(O);
rx = new RegExp(regexp, 'g');
return IS_PURE ? $matchAll.call(rx, S) : rx[MATCH_ALL](S);
}
});
IS_PURE || MATCH_ALL in RegExpPrototype || hide(RegExpPrototype, MATCH_ALL, $matchAll);